Cher3 2(Ver 1.7)En

LEVEL 3-2

(version 1.7)

Inventory Chapter 1. NB scheme Chapter 2. POWER Chapter 3. CHARGE Chapter 4. CLOCK Chapter 5. HDMI Chapter 6. Touch Pad Chapter 7. Keyboard Chapter 8. AUDIO P5~P77 P78~P185 P186~P223 P224~P247 P248~P261 P262~P279 P280~P292 P293~P328

Inventory Chapter 9. MODEM Chapter 10. USB Chapter 11. PCMCIA Chapter 12. IEEE 1394 Chapter 13. Card Reader Chapter 14. SATA Chapter 15. ODD Chapter 16. LAN P329~P338 P339~P358 P359~P363 P364~P380 P381~P393 P394~P400 P401~P409 P410~P430

Inventory Chapter 17. VGA Chapter 18. LCD Chapter 19. BIOS Chapter 20. MEMORY Chapter 21. POST CODE Chapter 22. NEW CARD Chapter 23. EC P431~P446 P447~P485 P485~P511 P512~P538 P539~P584 P585~P590 P591~P621

Chapter 1 NB scheme

Overview Introduction Diagram Q & A (Repair Experience)

Introduce Intel Product AMD Product EeePC Product

Intel Chip Family & Comparison

Intel Centrino EvolutionCentrino1-4==(Centrino1) Centrino 5=(Centrino2)(Core2 Duo )Platform code CPU Code Carmel Banias (130nm) DDR-333 1 (1M) Odem+ MontaraGM (400MHz) ICH4-M Calexico (b) Sonoma Dothan (90nm) DDR2-533 1 (2M) Alviso (533MHz) ICH6-M Calexico2 (a/b/g) Napa Yonah (65nm, Dual Core)L2=2MB DDR2-667 2 (2M/4M) Calistoga (667MHz) ICH7-M Golan (a/b/g) Santa Rosa Merom (65nm, Dual Core)L2=4MB DDR2-667 2 (4M/6M) Crestine (800MHz) ICH8-M Golan 2 (n) Montevina Penryn (45nm,Dual/Four Core)L2=6MB DDR3-1066 2/4 (6M) Cantiga GM/PM (1066MHz) ICH9-MEcho peak/Shirley Peak WiMAX & n / (n)

Support DDRCPU Catch (L2) GMCH (FSB) ICH Wi-Fi(802.11)

Intel Centrino EvolutionCorePlatform Code CPU Code Support RAM CPU Catch (L3) ICH Wi-Fi Calpella Clarksfield(Nehalem) Auburndale(Nehalem) (45nm)(Internal DDR3 (45nm)(Internal DDR3 memory memory controller with controller) graphic chip) DDR3-1066/1333 4/2 (8 M) IbexPeak-M(DMI) Puma Peak / WiMAX Kilmer Peak DDR3-1066/1333 2 (4M) IbexPeak-M(DMI) Shirley Peak/ Echo Peak Arrandale(Westmere) CULV(32nm) DDR3-1066 2 (4M) IbexPeak-M(DMI) Shirley Peak/ Echo Peak

Intel Centrino EvolutionCore2Platform Code

Huron RiverSandy Bridge (32nm)DDR3-1066/1333

CPU CodeSupport DDR CPU Catch (L3) ICH Wi-Fi

4/8 (8 M) QS67, QM67, HM67, HM65, UM67 Centrino Advanced-N + WiMAX 6150



Montevina vs Calpella

Calpella vs Huron River

Diagram

Sonoma Platform Napa Platform Santa Rosa Platform Montevina Platform Calpella Platform Sandy Bridge Platform

Sonoma Platform Diagram-1

Sonoma Platform Diagram-2

Napa Platform Diagram-1

Napa Platform Diagram-2

Santa Rosa Platform Diagram

Santa Rosa Platform Diagram Crestline / ICH8M

Montevina Platform Diagram

Calpella Platform Diagram (Clarksfileld)

Calpella Platform Diagram (Auburndale)

Sonoma Diagram M51A Sample GMCH Core Frequency 333MHz 12.1 active matrix TFT, XGA 1024x768 resolution, LVDS D-Sub 15 pin

CPUDothan

Intel Pentium M Processor Speed at 1.6G~2.13GHz (Dothan) 2MB On-Die L2 Cache

CRT

LCD Con.& Inverter

400/533 MHz FSB DDR2 SDRAM 400/533 MHz DDR1 SDRAM 333 MHz Dual Channel support DDR2 Single Channel support DDR1

On board 256M DDR2 SDRAM 400 MHz design

Alviso(GMCH) 915GM

Memory DIMM

1 x SODIMM socket for expansion up to 768GB DDR2-400/533 DRAM support PCI BUS ,33MHz

USB 2.0 X3 port

USB 2.0

DMI Link ,100MHz

IDE BUS Ultra ATA 100/66ICH6-M 2.5 30/40/60/80 GB 4200/5400RPM Azalia Link

Combo drive Dual drive Super multi drive

MINI PCI Slot

LAN ler RTL 8101L

Cardbus R5C841

RJ-45

LPC BUS ,33MHz

IEEE 1394

PCMCIA type II

4 IN 1 Card Reader MMC SD MS MS-Pro

Audio CODEC ALC861

FWH SST 49LF004A

Int. & Ext. MIC

Headphone -out Jack / Int. SPK

Modem Module

KBC M38857

Int. KB & T/P

Napa Diagram- W5F Sample GMCH Core Frequency 400MHz 12.1 Wide active matrix TFT, 1280x768resolution, Support EDIDCRT

CPUYonah

Intel Yonah dual core T2300/2400/2500/2600 1.66/ 1.83/ 2.0/ 2.16G Processor 2MB On-Die L2 Cache

667 MHz FSB DDR2 SDRAM 533/667 MHz Single or Dual Channel support

LCD Con.& InverterTV

LVDS D-Sub 15 pin S-Video

On board 512M DDR2 SDRAM 533/667 MHz design

Calistoga(GMCH) 945GM

Memory DIMM

Bluetooth V2.0

CMOS Module 1.3 mega pixels

USB 2.0 X3 USB 2.0 ICH7-M

1 x SODIMM socket for expansion up to 1GB DDR2-533/667 DRAM support

DMI Link ,100MHz (Direct Media Interface) PCI BUS 3.3V ,33MHz Azalia Link

IDE BUS ,Ultra ATA 100/66

2.5 60/80/100/120 GB 4200/5400RPMCombo drive Super multi drive NEW CARD MINI CARD 802.11 a/b/g Intel 3945 ABG TPM 1.2 PCIE-E LPC BUS ,33MHz SPDIF or Line outFWH SST 49LF004A

Audio CODEC ALC660 Int. SPK

Cardbus R5C832

LAN ler RTL 8101

IEEE 1394 MMC SD MS MS-Pro XD

RJ-45

KBC M38857

Int. & Ext. MIC

Int. KB & T/P

Modem Module

5 IN 1 Card Reader

Santa Rosa Diagram A8Se Sample

Montevina Diagram N80V Sample

Calpella Diagram G60J Sample

Huron River G60J Sample Calpella Diagram N53SV Sample

AMD Platform

AMD Notebook Platform

AMD Notebook Chipsets

AMD Business Class

AMD Business Class

Among Danube platform system, chip group adopt three chip structural design, monobasic M880G (RS880M) at north bridge chip continue to use still ,But the chip of south bridge is upgraded from SB710 to SB820 M, the north bridge combines Mobility Radeon HD 4200 figure core, obility Radeon HD 5000 series to do for the independent display card and its matching. Besides supporting DDR3 SO-DIMM memory, AMD Danube platform also supports SATA 6Gbps high-speed interface, DVI/HDMI/DisplayPort video to expand interfaces, and the generator of the integrated clock and a new generation's wireless technology.

AMD Client Processor Roadmap

AMD Puma DiagramN50Tr Sample

AMD Tigris DiagramK40AF Sample

AMD Danube Diagram K42DR Sample

AMD CPU S1g4

AMD CPU S1g4

S1g4 processor support all S1g3 processor features.

Eeepc Platform

Diamondville

PineTrail

Diamondville

PineTrail Atom N270 Atom N280 Atom N450 Atom D410 Atom D450 FSB 1.66GHZ 1/2 533MHZ 1.66GHZ 1/2 667MHZ 1.66GHZ 1/2 667MHZ 1.66GHZ 1/2 800MHZ 1.66GHZ 2/4 800MHZ

L2 TDP

512KB45nm 2.5W

512KB45nm 2.5W

512KB45nm 5.5W

512KB45nm 10W

2*512KB45nm 13W

2 3

1

1 2

Socket A Athlon XP

Chapter 2 POWER Repair Guide

Overview Introduction Diagram Repair Flow Chart Q & A (Repair Experience)

Introduction Classification of the power circuit Linear & Switching Regulator Switching Buck Converter Voltage & Current Mode Control Multiple Output Controller Multi-Phase Operation

Power Classification Type ACDC: Rectification. DCDC: DC Converter.

DCAC: Inverter. ACAC: AC Converter.

@ DC Converter Linear & Switch @ IC in Power circuit, generally call Regulator

Linear RegulatorINPUT REF - + OUTPUT

Linear Regulator Advantages Simple Low Cost

Issues Power Dissipation

Switching Regulator

Switching Regulator Advantages Efficient

The Basics of Switching Regulator

Issues Noise Layout

Switching Buck ConverterSynchronous Buck Converter is More EfficientVCC VIN VCC VIN

PWM controllerFB GND

UGATE PHASE

VOUT

PWM controllerFB

UGATE PHASE LGATE PGND

VOUT

GND

STARD BUCK CONVERTER

SYNCHRONOUS BUCK CONVERTER

Voltage Mode vs. Current Mode ControlCONTROL IC PWM LOGICVIN

CONTROL ICVOUT

VIN

PWM LOGIC

VOUT

VOLTAGE CONTROL

CURRENT CONTROL VOLTAGE CONTROL

Voltage Mode controlSingle control Loop No Current Sense Resistor Better Noise Immunity Less Sensitive to Layout

Current Mode controlImmediate Response to change s in Input Voltage Inherent Current Limiting

Diagram Santa Rosa Power Plane Standard Diagram(A8S,A8E,F3E,F7Sr,F9S,W7S,Z96S..etc.)

Montevina Power Plane Standard Diagram(F6V,N80Vc,N80Vr,M51Va,N20A..etc.)

Calpella Power Plane Standard Diagram(N71JA.etc)

Sandy Bridge Puma Power Plane Standard Diagram(N53SV.etc)

AMD Puma Power Plane Standard Diagram(N61DAetc)

Diamondville Power Plane Standard Diagram(1008HAetc)

PineTrail Power Plane Standard Diagram(1201HA...etc.)

ATOM+ MCP79 Power Plane Standard Diagram(1201Netc)

Eeepc AMD CPU Power Plane Standard Diagram(1201T...etc.)

Diagram-1

(Santa Rosa )

Diagram-2-1

(Montevina)

Diagram-2-2

(Montevina)

Diagram-3

(Calpella)

Diagram-4

(Sandy Bridge)

Diagram-5

(AMD Puma)

Diagram-6

(Diamondville Puma)

Diagram-7

(PineTrail Puma)

Repair Flow Chart(1)StartConfirm the symptom problem is Power to GND or No Power Trace the circuit, V.I Check & change NG related Component Change NG CMOS BATT & Xtal Component /trace related circuit Trace related circuit, Change Defect Component Measure AC_BAT_SYS signal (AC mode : 19V,BATT mode 16.8V) No Power / Power On error

Visual Inspection A/D & BATT Connector/Measure voltage

COMS Voltage between 3V~3.3V Xtal CLK signal is correct 32.768kHz

Measure COMS battery/ Xtal CLK for S.B is OK ?

Confirm the circuit, Check All Always/ Stand-by Voltage (ex. +3V/+5V always) (by RD design)

Check Always/ stand-by Voltage is OK ?

Change NG Component

Trace and confirm the circuit to Check 1.PWR_SW# status Hi->Lo->Hi and Lid_SW# signal must be always Hi 2.PWR_BTN# signal status Lo->Hi->Lo (to S.B) (all status Hi or Lo will be by RD Design spec.) 1.PM_SUSC# +3V , +5V +12V etc (by model request) 2.PM_SUSB# +12Vs , +3Vs , +5Vs..etc (by model request) 3.CPUVR_ON Vcore , VRM_PWRGD , CLK_EN#

Check PWR_SW# & PWR_BTN# circuit is OK

Trace related component, compare with the circuit Change NG Component

Measure & Check Control Signal PM_SUSC# / PM_SUSB# / PM_SUSA# /CPUVR_ON

Finished

Repair Flow Chart(2)Start Power GND Confirm the symptom problem is Power to GND or No Power

Visual Inspection All Component is OK ? ICT jump Power Voltage GND

Check component have short or burn

Confirm the problem

AC_BAT_SYS Signal GND

Confirm the TSICT program, Check what kind voltage of ICT Power jump (+3V or +3Vs / +5V or +5Vs .)

Confirm & check to separate which power circuit cause AC_BAT_SYS to GND

()Separate

ICT power Jump solder, Use multi-Meter to measure which side voltage to GND ()Confirm the circuit and use TSICT program to Find out all the connection component Check Item as follow: (1)Check MOS-FET component (G-S gate is no short) (2)Check Capacitor (V.I capacitor surface is no rift) (3)Change voltage to GND of BGA component Finish

Power circuit can differentiate to 4 section : ()Main Power IC circuit Check MOS-FET ,Capacitor ,Power IC ()BATT charge circuit Check MOS-FET ,Capacitor ,Diode ,Charge IC ()CPU Vcore Power circuit Check MOS-FET ,Capacitor ,Diode ,CPU power IC ()LCD Inverter Power supply circuit Check Capacitor or Inductance

NB power training--For Montevina platform

An important component platform needed---EC

Keyboard matrix/Touchpad control Power/ChargerLEDs instruct Fan tachometer control Power management (sleep/hibernate/wake up/Lid switch) Power sequence control with ICH9M Battery charger/cell capacity/temperature monitor GPIO control PS: If the system cannt power on, we can snatch LPC_FRAME# to make known that whether EC has worked.

ACPI (Advanced Configuration and Power Interface, advanced configuration and power interface) It is by Intel, Unless Microsoft, Phoenix, HP and computer powers that Toshiba make together last specification, it last operating system can Utilize the state of power with various devices of direct management.

Power Sequence Provision---ACPI Power State

G0/S0:Full on G1/S1:CPU sleep ----SB(EXP:ICH9M) has the option to assert the CPUSLP# signal to further reduce processor power consumption. G1/S3:Suspend to RAM ----The system context is maintained in system DRAM, but power is shut off to non-critical circuits. Memory is retained, and refreshes continue. All clocks stop except RTC clock. G1/S4:Suspend to Disk ----The context of the system is maintained on the disk. All power is then shut off to the system except for the logic required to resume.

G2/S5:Soft off ----System context is not maintained. All power is shut off except for the logic required to restart. A full boot is required when waking. G3:Mechanical off ----power failure Because the system does not have any power.

Power Sequence types on notebook Five types of power sequence G3S5 S5S0 (Power on) S0S5 (Power down) S3S0 S0S3

Power on---AC/DC block flowDifference: AC mode (plug in adaptor): G3S4/S5 , have VSUS power. (to save power) DC mode (only plug in battery): G3S4/S5 , have no VSUS power.0 0 1VSUS_ON START AC_IN#

1VSUS_ON -> 0 PM_RSMRST# -> 0

VSUS_ON -> 1 Delay 5ms

end

end

0

Wait VSUS_GD=1

1PM_PWRBTN# -> 1 Delay 20ms PM_RSMRST# -> 1

end

Power on---AC NB Cantiga19.PLT_RST#

sequence2.A/D_DOCK_I N

CPU

20.H_CPU_RST#

MAX87253.AC_BAT_SYS

4.+3V A

16.VRM_PWRGD

8.PM_RSMRST#

9.PWR_SW # 4.AC_OK=1

10.PWRBTN#

11.PM_SUSC#

12.PM_SUSB#

RTC BAT

SB ICH9M17.PM_PWROK

5.VSUS_O N

RT8203

1.RTCRST#

EC ITE8752

7.VSUS_G D 13.SUSC_O N 14.SUSB_ON 15.CPU_VRON (55ms)MEMORY POWER(+1.8V,0.9V) OTHER MAIN POWER(+1.5V,+1.05V etc.)

Vcore controller

16.VRM_PWRGD

Power on---DC NB Cantiga19.PLT_RST#

sequence2.BAT_CON

CPU

20.H_CPU_RST#

MAX87253.AC_BAT_SYS

4.+3V A

16.VRM_PWRGD

9.PM_RSMRST#

5.PWR_SW # 4.AC_OK=0

10.PWRBTN#

11.PM_SUSC#

12.PM_SUSB#

RTC BAT

SB ICH9M17.PM_PWROK

6.VSUS_O N

RT8203

1.RTCRST#

EC ITE8752Vcore controller16.VRM_PWRGD

8.VSUS_G D 13.SUSC_O N 14.SUSB_ON 15.CPU_VRON (55ms)MEMORY POWER(+1.8V,0.9V) OTHER MAIN POWER(+1.5V,+1.05V etc.)

F3Q Power on Sequence(1)





Power down---Block flow Block flow

Power down---General Sequence

Common Bugs(1) 1.The system cannt be powered on, and the adaptor LED indication flicker.Here is somewhere short, check all power rails whether have been short to GND.

2.The system cannt be powered on, and power LED not lighten.Maybe The BIOS ROM content has been wrecked. +3VA powered? Why not VSUS power? Power IC or MOSFET or Diode burnout?

3.The power LED lighten, but the system cannt bring up to DOS.plug in debug card, view the 80 post code, for example:80 code no motion, show 00 > CPU not work >measure power sequence black screen, show d0~d5 > memory plug failed or memory broken black screen, show F0~F2 > one DIMM slot failed show 38 > check USB port and USB device

If not mount LPC debug & Newcard debug card because of cost down, try to flash BIOS by JIG board or measure sequence.

Common Bugs(2)

4.The system ofen show blue screen suddenly in OSun-install drives (even enter safe mode), find whether a device driver installed wrongly cause it un-plug device to check BIOS updated? Care for BIOS release note check FAN status/thermal module > over temperature? and so on

5.take a software bug on M51A for example in Vista, can use hotkeys Fn+F5 & Fn+F6 to control backlight brightness, but in XP, these hotkeys have no functionVista: report to driver directly to active but XP: need report to BIOS, and it send software SCI to active. solution: update BIOS to 217 or newer version

NB power training--For calpella platform

OutlineCharger MB39A1321.Adapter/battery exchange 2.Chang to prepare 3.MB39A132 chargings Establishment 4.MAX8725 chargings Establishment 5.MAX17015 chargings Establishment

Vcore RT88561.Montevina platform VS Calpella (power) 2.VIDs Establishment setp 3.Powet sequence

GFX Core RT81521.RT8152 intorduse 2. Power sequence

System RT8206/RT82021.RT8206 2.RT8202

Power-flow

Vcore RT88561 Montevina platform VS Calpella (power)Itemchipsets Power rail power Memory Support VID/ Vboot DAC codes Vboot Monitor Power saving signal DPRSLPVR

Montevina (IMVP6+)3(CPU+NB+SB) Vcore(core) DDR2(1.8V) VID[6:0] 1.2V PMON 3.3V-H

Calpella (IMVP6.5)2(CPU+Ibex Peak-M) VGFX (Graphics)/ Vcore (core) /VTT-CPU(core) DDR3(1.5V) VID[6:0] 1.1V IMON Vttcpu-H

DPRSTP#Performance other Performance OVP

Support slow C4/X 1.7V

deletedTurbo boost 1.55V

2VIDs Establishment

POC (power on configuration) line: Vcore power pull high beforeCPU will pass VID[5:3] step to know VR Imax;VID[2:0],VID[6],DPRSLPVR,PSI #---default; CPU will passVR .IMON will know Vcore and GFX-corespower; Turbo Boost Technology: CPU Core and GFX Core make power sharing improve thrt performance

3Power sequence

Wait system power OK afterEC will pull CPU_VRON to HighVcore power than to upVRM_PWRGD pull high after 6ms..

GFX Core RT81521RT8152 intorduce

GFX core no need to Establishment POC lineVID pull H/L only for factory ATS test(No put in CPU,VID floating)DPRSLPVR no need to Establishment default; CPU pass VRIMON to know GFX-corespower; Turbo Boost Technology

2Power sequence

GFX Core power between VTT_CPU power after Vcore power befer CPU Send GFX_VRON news power level is CTT_CPU

system RT8206/RT82021RT8206

RT8206s work principle the same RT8205 +3VA open by +5VA than pass LDO to output.

2RT8202: two typeEN =High, RT8202 will follow loading to reduce PWM operating frequency , raise the efficiency

EN=floating,RT8202 of Fixed frequency Freq=500KHz

Q&AQ1:MAX8725, MAX17015 charge the principle. Leave ADAPTER show battery icon, leave the battery show ADAPTER icon, except consider AC _ IN _ OC# and BAT _ IN _OC# What signals does need considering? A: first need check adapter and battery are OK or not =>And then see AC _ IN _ OC # and BAT _ IN _ OC#(TS1#) Connect it by mistake =>Confirm whether EC is OK

Q2Q2: RT8206 operation principleK40C use this chipa lot of 3vo and 5vo are loss,so dont boot AWant this pieces of question according to at check forward step by step: Confirm first whether the board or component are damaged =>After having the power, AC_BAT_ SYSwhether the voltage =>Is 5VA OK =>Is 3VA OK =>VSUS_ON stand up =>If no 3VO/5VO voltage, should be change controller .

AC_BAT_SYS Y+3VA Y

N

Device short to GND

Repair Flow ChartPWR Control IC /MOS Damage

N

PWR Control IC Damage

SUSY SUSC Y SUSB Y CPU

N

YVSUS_ON

N YSUSC_EC#

EC Damage

N

IC/MOS Damage

N

YSUSC_EC# IC/MOS Damage

N

YCPU_VRON IC/MOS Damage

EX1:Adapter indicator lamp to glimmers ceaselesslyAC indicator lamp to glimmers ceaselessly AC_BAT_SYS NDevice short to GND

Battery

PWR short to GNDDevice short to GND

NB,SB to GND

EX2NO +3VSUS,+5VSUS voltage AC

N +3VA Y

Remove +3VAO-> +3VA JP N

N +3VA YEC Damage

RT8206 Damage

VSUS_ON

Ymeasure MOS OK?

NChange MOS

YIC Damage

1.Remove PWR to Device of JP

.Link JP of below

AC in

Adapter indicator lamp to glimmers N ceaselessly Y PWR short to GND

Device short to GND

Link +3VAO-> +3VA JPN

Y

EC short to GND

Join sequentially of other JPN Chang PWR IC

measure Power rail H-s& L-s MOS

Exchang damage H-s& L-s MOS

EX3NB dont chargeBattery is it intact

VSET_EC ISET_EC have or not? Y N MOS ok or no?t Y Change IC

N

EC Damage

Change MOS

EX4No VCORE voltageOther power Ok?

NCPU_VRON

EC Damage

YMeasure MOS OK?

NMOS

YIC Damage

NB power training--For Sandy Bridge platform

N53SV Power Sequence

NB power training--For AMD platform

N61DA use RX881 replacement RS880

N61DA use clock gen by SB inside.

S5S0

S3S0

Problems1.The system cannt be powered on, and the adaptor LED indication flicker.Here is somewhere short, check all power rails whether have been short to GND.

2.The system cannt be powered on, and power LED not lighten.Maybe The BIOS ROM content has been wrecked. +3VA powered? Why not VSUS power? Power IC or MOSFET or Diode burnout?

3.The power LED lighten, but the system cannt bring up to DOS.plug in debug card, view the 80 post code, for example:80 code no motion, show 00 > CPU not work >measure power sequence black screen, show d0~d5 > memory plug failed or memory broken black screen, show F0~F2 > one DIMM slot failed

If not mount LPC debug because of cost down, try to Newcard port, flash BIOS by JIG board or measure sequence.

4.The system often show blue screen suddenly in OSun-install drives (even enter safe mode), find whether a device driver installed wrongly cause it un-plug device to check BIOS updated? Care for BIOS release note check FAN status/thermal module > over temperature? and so on

ProblemsWhen normal voltage and frequency are still not open where do you begin. Disconnect all Device, re-plug DIMM, flash EEPROM,, confirm all reset nets, check Debug code Blue screen, crashes, cant into the system, where do you begin Disconnect all Device, re-plug DIMM, flash EEPROM, replace the HDD, check the FAN & Thermal module, search Windows error code Keyboard string key, for the EC and keyboard interface, keyboard interface to ground resistance is normal, what issues need to be considered. Replace the keyboard, re-weld, check the EMI capacitor

Problems

E-SATA device cant recognizeCheck cable is connected or not

WLAN cant openCheck WLAN switch is connected or not

Start soon shot down for no reason Check thermal pip & fan is not connected correctly.

ProblemsBoot no display, but the debug card can run code Check LVDS cable is not connected Check LVDS cable is bad

NB power training--For EeePC(1008HA) platform

5 types of Power sequenceG3S5 S5S0(Power on) S0S5(Power off) S3S0 S0S3

Power states on 1008HAStates Mode VA VSUS_ON VSUS SUSC# 1.8V & VTT_DDR SUSB# VS ADP off off on off on on on on low low high low high high high high off off on off on on on on low low low low high high high high off off off off on on on on low low low low low low high high off off off off off off on on

G3BAT ADP S5/S4 BAT ADP S3 BAT ADP

S0BAT

EC firmware make this different Power latch make this different

Power on sequence

Sym

Timing Parameters

Min

Max

Unit

Ta

Vcc/Vccp assertion to VID valid VID/BSEL valid to Vcc stable

10

us

Tb

100

us

Tc

Vccp stable to VID/BSEL validPWRGOOD assertion to RESET# deassertion time VCC,BOOT stable to PWRGOOD assertion BCLK stable to PWRGOOD assertion VCCA stable to PWRGOOD assertion

10

us

Td

1

10

ms

Te

0.05

20

ms

Tf

10

BCLKs

Tg

1

ms

OutlineBlock Diagram Features Power on sequence Common bug analyze on 1008HA Q&A Appendix

Debug flowNo ADP in ADP LED flickering yes There is somewhere short Check VA SUS power Check Charger circuit AD_DOCK_IN, AC_BAT_SYS Check +3VA Of f Open the short pin between +3VA & +3VAO On EC/SPI ROM Damage On Press power bottom Power LED on Of f Check VSUS_ON On Of On f Check RT8205D circuit

Of Check RT8205D circuit f 1008HA can change power board

Of f Unplug Devices & Check device

Refresh Bios Check Drivers & AP Or is there any virus? Not solve Solve Use OEM Image No OK Check Bios menu SATA IDE/AHCI mode (default AHCI) Check HDD System stable Check PM_RSMRST# , PM_PWRBTN#, SUSB# & SUSC# Ok Low

Check PLT_RST# Low High

Check SUSB_ON & SUSC_ON High

OK

Refresh Bios or Change EC chipCheck power voltage CLK frequency No yes Boot in OS 00

Check main powerCheck debug code Ok d5 Check memory module

OK Update latest Bios No yes

EC EOS IssueSymptom:1. PWR LED doesnt light while pressing power bottom 2. VSUS power arent ready (VSUS_ON isnt High) 3. Refresh Bios doesnt work 4. There is some evident damage on EC chip

Root cause:1. FFC cable plug/unplug when the system is not in G3 states (Mechanical OFF) 2. FFC cable doesn't plug well and the system is not in G3 states (AC or Battery plug in)

OutlineBlock Diagram Features Power on sequence Common bug analyze on 1008HA Appendix

OutlineBlock Diagram Features Power on sequence Common bug analyze on 1008HA Q&A Appendix

Definition of each states

NB power training--For EeePC(1201HA) platform

Agenda Power Solution Introduction Common Bug Criteria and Solution

Power Solution

Power State & Signal Control

Power flowPower Schematic

1.Power State & Signal Control

Always PowerPower Rail ControlEX:3VA,5VA /X (*)

Standby PowerEX:3VSUS,5VSUS VSUS_ON

Dual PowerEX:1.8V SUSC_ON

Main PowerEX:3VS,5VS SUSB_ON EX:VCCP CPU_VRON

(*):Because of the power latch circuit, theres no always power when only insert battery.

2.Power flowEMB24B03G (SWITCH) AC_APR_UC_10 A/D_DOCK_IN MB39A132 (Controllor) BAT CHG_ACOK#_10 RT8205CGQW (Controller) 3VSUS: Hi-side: EMB20N03V Low-side: EMB20N03V 5VSUS: Hi-side:EMB20N03V Low-side:RJK0355 VSUS_ON SUSC_ON SUSB_ON VSUS_ON +3VSUS (4A) SUSC_ON SUSC_ON RT8202APQW (Controller)1.8V: Hi-side:EMB20N03V Low-side: EMB20N03V

AC_BAT_SYS EMB20P03G SWITCH

CHARGER

AC_BAT_SYS

(under0.45A) +5VA

UP7714 (LDO)

+3VA

(0.1A)

SUSB_ON +5VSUS (3A)

EMB20N03V (SWITCH) EMB20N03V (SWITCH) EMB20N03V (SWITCH) EMB20N03V (SWITCH)

+5VS (1.5A) +5V (1.5A) (2.5A) +2.5VS (150mA)

+3VS +3V

UP7714 (LDO)

(1.5A)

+1.8V (3A)

UP7711 (LDO) UP7704 (LDO)

VTT_DDR (0.5A)

+1.5VS (1A)

RT8202APQW (Controller) CPU_VRONVCCP: Hi-side: EMB20N03V Low-side: EMB20N03V

+VCCP (5.5A)

EMB20N03V (MOS)

+VCCP_C6 (2A)

SYSTEM

SLPIOVR# RT8202APQW (Controller) VCCP_PWRGDVCORE: Hi-side: EMB20N03V Low-side: EMB20N03V

+VCORE

(4A)

VRM_PWRGD

3.Power Schematic Load Switch

Linear circuit Switching circuit

Charger circuit Power Latch circuit

a) Load switchPQ28 EMB20N03V 8 7 6 S 5 5D G PR116 P_3VS5VS_EN_101 1 00 KOhm 3 PRN5 9B 1 00 KOhm PRN5 9A

When EN is high, the mosfet turn on+3VSUS Shape 1 2 3 4 Shape +3VS (1.5A)

+5VA

+12VSUS

1

1 1

PT 23 PT 27

2

1 62KOhm 1%1

PC110 1UF/16V PC111 0.01UF/16V GND2

+3VS,+5VS ENPRN59C 6 5 100KOhm

1 PT 28 1

GND3 P_SUSB# _ON_ 10 2 4

2

PT 24

1

PQ30A 2 PQ30B1

UM6K1N

+5VSUS

1

Shape

PQ29 EMB20N03V 8 7 6 S 5 5D G

1 2 3 4

Shape + PCE6 100UF/6.3V /X 1 PL17 2

(1.5A)+5VS +5V_USB

6

PRN59D 32,37,45,46,50 SUSB_ON 10mil 7 8 10mil 100KOhm1

PC112 1UF/16V2

70Ohm /100Mhz

54

UM6K1N PR117 1 GND GND 21

PC113 0.01UF/16V /X

GND

GND

S0 S5 S3/S5

10KOhm PC114 0.01UF/16V

GND

2

GND

2

2

b) Linear circuitVTT_DDR / 0.5A+1.8V

2

+5V S P L1 4 7 0Ohm /1 00 Mhz 2 5mil 1 2 3 4 P U7A V IN GND1 RE FIN V OUT GND2 NC3 NC2 V CNT L NC1 9 8 7 6 5

+1.8V

1 1

P T 36 P T 35

1

1

P U7B P R13 9 1 0K Ohm 10 11 12 13 GND3 GND4 GND5 GND6 UP 77 11 U8

1 5mil GND

+VT T _ DDR

1

1

P C83 1 0UF/6 .3 V

P C84 1 0UF/6 .3 V

1

UP 77 11 U8 P C85 GND 1 0UF/6 .3 V P _V T T DDR_RE F_ 10

2

2

2

1

GND

GND

GND

P C87 P C86 0 .1 UF/16 V 0 .1 UF/16 V

1

1P R14 0 1 0K Ohm

2

GND

2

GND GND

2

+3V S _V DA C_CH +3V S _V DA C_CH

+2.5VS / 150mAE N NC/SS /FB GND V IN V OUT P U9 UP 77 14 B MA5 -00 5 4 P R10 9 1 0K Ohm 1% P R10 8 P JP 2 0 2 2K Ohm 1 % P _2 .5V S _FB _11 0 2 _2 .5V S _FB JP2 10 P _ 1

GND

1

P R10 7 0 Oh m

2

P _2 .5V S _S HDN#_ 10 1 2 3

2

+2.5V S S HORT_ P IN /X P C10 3

1

1

1 UF/16 V

1

P C10 1

P C10 2 1 UF/16 V /X

1

1 1 0UF/6 .3 V 1

2

2

P T 32 P T 31

GND

GND GND GND

2

2

+3VA_AEC / 100mA+5V A P T 22 T P C26 T /X +5V A

2

P R30 1 00 KOh m P U2 E N NC/SS /FB GND V IN V OUT UP 77 14 B MA5 -00 5 4

P C25 2

2 20 PF/50 V /X 1

P T 11 T P C26 T /X

1

P _3 V A -E C_ E N_ 10 1 2 3

P R32 1 % 3 1.6K Oh m P JP 7 /X P _3 V A -E C_ FB _ 10 2 1 _3 V A -E C_ FB J P_ 10 2 P 1 S HORT_ P IN

1

1

+3V A

1

1

P C27 1 UF/16 V

P C28 0 .1 UF/16 V

1

P R34 1 0K Ohm

P C29 1 0UF/6 .3 V c 08 05 _h 57 GND

2

c 06 03

2

GND

GND GND+1.8V

2

+1.5VS / 1AP T 40 1 +5V S P U12 A P R11 0 1 0K Ohm 2 1 P _1 .5V S _E N_ 10 P _1 .5V S _V IN_S 1 2 3 4 P OK EN V IN CNT L GND2 GND1 FB V OUT NC GND 9 P R11 1 8 6 .3 4K Oh m 7 P _1 .5V S _FB _1 0 2 1 _1 .5V S _FB JP _ 10 P 6 5 3 2,37 ,45 ,4 8,5 0 S US B _ON P JP 2 1 2 1 +1.5V S S HORT_ P IN /X

1

1

1

1

1 MOHM

1 0UF/6 .3 V

P _1 .5V S _CNT LUP0 06 U8 _1 77 mb _s oi c _8 p_ 19 7x2 36 _4 vi aP R11 4 5 1K Ohm P C10 8 1% 0 .1 UF/16 V /X

8 .6 6K Oh m

P C10 6

1

P R11 2

P C10 4 0 .1 UF/16 V /X

P C10 5

1

1

P R11 3

2

1

P C10 7 1 0UF/6 .3 V

1 1

P T 30 P T 29

2

1

1 0UF/6 .3 V

2

2

2

2

GND

GND

2

2

GND P Q27 2 N7 00 2 P R11 5 2 1 _+1.5 V S_ OV _1 0 1 P 1 G

GND

3

GND

P _1 .5V S _OV # _1 0 D

3

1 4,43 ,44 ,4 5 P M_L E V EL DOWN#

1

1 00 KOh m

2 S

P C12 7 0 .1 UF/16 V /X

2

GND

2

GND

2GND

Common IC in linear circuit1201HA use UP7711 for VTT_DDR, UP7704 for 1.5VS, and UP7714 for +3VA and +2.5VS. Action Principle: Amplified signal controls MOS GATE voltage, furthermore, MOS turn-on resistance is adjusted to change voltage drop on MOS, so output is adjusted too.

The greater voltage drop on MOS, the smaller current allowed

UP7714 IC internal structure Variable resistor

c) Switching circuitPR93 P_VCCP_ENF_10 2 0Oh m /X PR95 820KOh m 1 1 +5VS P_VCCP_IN_SP_VCCP_TON_1 0 P_VCCP_EN_1 0

PL12 1 2 AC_BAT _SYS 70Ohm /100Mhz1

+3VS

+5VS

P_VCCP_IN_S 2

PC90 10UF/25V c1206_h75

1

PC126 10UF/25V c1206_h75

5

2

P_VCCP_BST _15 P_VCCP_UG_ 20

2

8 7 6 5 D

GNDS G

GND

1

GND PU8A

17 16 15 14 13

+VCCP / 5.5APL13 1 2.2UH2

1 1

PT 20 PT 21

GND2 TON EN/DEM NC2 BOOT

PR96 100KOh m +VCCP 1 P_VCCP_VDD_10 2 VOUT P_VCCP_FB_10 3 VDD P_VCCP_PW RGD_10 FB 4 PGOOD1 2

PD14 1 2

BAT 54CW 3P_VCCP_BST _15

PC92 0.1UF/25V 2 1

PQ24 EMB20N03V1 P_VCCP_SNU_S 2 1

NC1 GND1 PGND L GATE

7,42 VCCP_PWRGD1

12 UGA TE 11 PHASE 10 OC 9 VDDP1

2

P_VCCP_PHASE_20 1 P_VCCP_OCR_10 2

4 3 2 1

P_VCCP_PHASE_S 15

21 1 1

+VCCP

PR98 10KOhm 1%

P_VCCP_FB_ 10

PC96 0.1UF/16V /X

1UF/16V2

PC95 1UF/16V RT 8202APQW

PQ2 5 EMB2 0N0 3V

PC94

2

PJP18 SHORT _PIN /X

PC93 1000PF/50V c0603

PC158 22UF/6.3V PJP192

PC159 PC160 22UF/6.3V 22UF/6.3V2 2

8 7 6 5 D

Ilimit = Rilim / Rsense * 20u

PR99P_VCCP_FB_ 10 1

2

PR100 1Oh m

402KOh m1

SHORT _PIN /X

2

5 6 7 8

GND

GND

GND

S

G

GND GND P_VCCP_LG_2 0 PC97 2 2 1000PF/50V 1 1 GND

GND

4 3 2 1

GND P_VCCP_FBJP_101

1

PR101 2.74KOhm 1%

PC98 0.1UF/16V 18 20

2

PU8B GND3 GND4 GND5 GND6 RT 8202APQW 19 21

PR102 10KOhm 1% PR103 2 GND 1 15KOhm 1% PQ26 A 21 2

GND 16

2

PT 37

S0GND

PR104 1 PC99 0.1UF/16V 2 100KOh m PM_LEVE LDOWN# 14,43,44,46

UM6K1N1

S3/S5

S3/S53

Hi : Vout = 1.0497V Low : Vout = 0.965V

PD18 BAT 54CW /X 1 2

+5VA

GND 1 PR105 2 PR144 30KOHM3

1

GND

2

PR149 100KOh m 2 0Oh m /X 2 +VCCP_OV 0 14 32,42 CPU_VRON 2 0Oh m PR145 1 P_VCCP_ENF_10 51 4

P_VCCP_EN_106

32,37,46,48,50 SUSB_ON PQ26 B 5 UM6K1N 100KOh m PC100 0.1UF/16V Defaul t4 1

1

PQ62 0A 2 UM6K1N1

1

3

PR106

2

PQ62 0B UM6K1N GND

PC173 0.1UF/16V /X

EN

2

GND

GND

GND GND

2

The basic principle of DC-DC switching circuit is to regulate the output voltage value by controlling the duty cycle.

Vout=Ton/(Ton+Toff)*Vin Duty cycle=Vout/VinTonH-S Turn-on time ToffL-S Turn-on timeToff

Vdriver+Vboot

UGATE:Ton

Vdriver

LGATE: VinSwitchings advantages compared to Linear 1.Output voltage can be lower 2. High conversion efficiency

PHASE:

e) Power LatchP R12 8 A C_B A T _S Y S 1 2 10 K Ohm

+3V_P L20 mil

+3 V _P L

P_ 3VPL _FB_ 10

P R12 9 33 0K OHM

When insert battery only,+3VA_PL is high,3VA & 5VA will be latched low.RT8205CGQW+3V A +3V _P L +VCC_ RTC P _+3V A _ +5 V A_ E N_1 0 3 4

2

1

2

1

For Power Latch

PC1 22 2 1

10 UF/6 .3 V

1

P U11 A P L4 31 LB A C

EN

P R13 0 20 0K Oh m

/X

4

1

2

6

P RN61 B 1 00 KOh m

P R13 1 0 Oh m /X

P RN61 A 1 00 KOh m 2

P Q37 A UM6K 1 N

+3VA

3

2

2

3

GND

4 3,47 P _CHG_ ACOK # _1 0 2 9,32 P W R_ S W_ E C#

2

P R13 2 0 Oh m

P D15 1 2 3 1 B A T 54 A W P D16 B A T 54 A W 2 1 3

1

GND

1

1

ECLatch5 P S -ON P RN61 C 6 5 1 00 KOh m P RN61 D 8 7 1 00 KOh m BAT GND P R13 4 2 P R13 6 5 10 KOh m /X 1 1 00 KOh m /X P C12 5 2 1 0 .2 2UF/2 5V/X P S -ON 32

P C12 3 0 .1 UF/16 V /X

29

P W R_ S W#

P Q37 B UM6K 1 N

GND 3 5 HOT K EY _ S W0 #_ P

2

When push the power button, or insert adaptor, 3VA & 5VA will exist

GND

6

P C12 4 2 1 1 UF/25 V /X

P R13 3 2 1 1 00 KOh m /X

1

3

A /D_DOCK _IN

P Q38 A UM6K 1 N /X 2 P R13 5 3 90 KOh m /X

P Q38 B UM6K 1 N /X 5

1

GND

2

4

This circuit is used for power saving.

GND

GND

2

1

4

3

Common Bug Criteria and Solution Switching Circuit Debug Flow How to make an estimation initially How to determine whether MOS is burned How to determine whether IC is normal LDO circuit debug

1.Switching Circuit Debug FlowMOS Visual Inspection InductorResister IC and components around Static Measurement Input/Output Resistance Confirmation MOS Resistance Confirmation Input/output voltage

Power on TestIC VCCENABLE voltage

2.How to make an estimation initially Measure if MOS is short? Visual inspect whether MOS Yes inductorcapacitorIC has any burned symptom Measure if capacitor is short? Measure if IC is damaged? Yes Change damaged component

For the outputMeasure Output Resistance short? YesMeasure MOS to confirm

Maybe L-S MOS is burned

For the inputMaybe H-S MOS is burned Measure 19V input short? Yes Maybe L-S MOS is burned Maybe input capacitor is burned

Measure MOS Measure MOS Change capacitor

PSAll measurement above is static on board

3.How to determine whether MOS is burned?Input/output short is commonly due to MOS shortif it is the case, please measure MOSFET first.

Onboard MOSFET in switching circuit criteria

For high side MOS1.Measure the resistance between Drain and Source, which should be above 50ohm, if so, all high side MOS is considered OK. 2. Measure the resistance between Gate and Source, if it isnt above K magnitude, the MOSFET is considered bad.

For low side MOS1. Measure the resistance between Drain and Source. If not short, all low side MOS is considered OK.

2. Measure the resistance between Gate and Source. If it isnt above K magnitude, the MOSFET is considered bad.

Attentions:1.Please discharge the MOSFET before measurement (mustnt power on) : separately short G and S, G and D, D and S one time. (short G and S is necessary) 2.Measurement sequence: measure D,S or G,D first, G,S last

Summary If MOS G-S, G-D resistance is above 1K ohm ,for high sideMOS D-S above 50ohm or for low side MOS D-S not short, the MOSFET is OK. Resistance measurement sequence: D-S, G-D, G-S Able to use diode level( and D, above 0.1V is OK. The MOS which removed should be confirmed burned or not. If all MOS is changed OK, but output still short, maybe its the problem of IC, or the load device (for Vcore or charger or any other without short pin).1

) 2to measure voltage between S

4.How to determine whether IC is OKIf there is no voltage after power on with all MOS OK, IC is likely damaged. a. Static measurement (suggest step): Remove IC, measure the resistance between every pin of IC and GND (compare with good IC) b. Power on test1 2 3 4

PU500

GND2 TON EN/D EM NC2 BOOT

17 16 15 14 13

RT8202APQW5 6 7 8

1.Change good IC, check whether output is normal after power on again. 2.If abnormal, check whether the voltage of IC ENABLE and VCC pins is normal (can compare with a good one) . 3. When ENABLE is abnormal, disconnect timing control circuit, check timing control circuit after power on 4.When VCC is abnormal, measure whether the series connected resistors and VCC power rail are OK or not.

NC1 GND1 PGND LGATE

VOUT VDD FB PGOOD

UGATE PHASE OC VDDP

12 11 10 9

5.LDO circuit debug1 2 3

P U2 E N NC/S S /FB GND V IN V OUT UP 77 14 B MA 5 -00 5 4

LDO circuits include +3VA,+VTT_DDR, +2.5VS,+1.5VS Firstly, measure whether output resistance is short or not . Then power on, measure each PIN voltage. Check whether input VIN, VCC, EN/SHDN# is normal to exclude timing problem. Also can check REFIN/SET/FB. Normally, correct REFIN/SET/FB voltage means IC is OK. Last, change IC to exclude the problem of IC self.

EPC (1215T) Power

Agenda Power Solution Introduction Common Bug Criteria and Solution

Power Solution

Power State & Signal Control

Power flowPower Schematic

1.Power State & Signal Control

Always PowerPower Rail ControlEX:3VA,5VA /X (*)

Standby PowerEX:3VSUS,5VSUS VSUS_ON

Dual PowerEX:1.5V SUSC_ON

Main PowerEX:3VS,5VS SUSB_ON EX:VCCP VCORE CPU_VRON

(*):Because of the power latch circuit, theres no always power when only insert battery.

2.Power flowBAT Adaptor40W(1 9V/2.1A)

A/D_DOCK_IN

AC_BAT_SYSEMB24 B03G

MB39A 132 H:FDM C8884 L:FDM C8884CHG_EN# S_SMBCLK1 S_SMBDATA1 AC_OK

BAT

3S2P/ 12.6V/3A

P_AC_ARP_UC_10

SWITC H EMB20 P03

AC_BAT_SYS

RT8206*1/2H:F DMC8 884CHG_EN# VSUS_ON

+3VSUS

L:F DMC8 884

S_SMBCLK1 SUSB_ON S_SMBDATA1

CHARGER+3VSFDMC8 884 APL53 25

+3VSUS (5A)

(4.765A)

+5VA

+3VA

(0.1A)

+1.8VS (2.1A ) ECVSUS_ON SUSB_ON

MP224 9

RT8206*1/2 H:FDMC8884+5VSYS_EN

+5VSYS

VSUS_ON

SUSC_ON

L:EMB09N03V

+5VSUS&5VSUS_USB (3.3A)FDMC8 884SUSB_ON VSUS_PWRGD

SUSB_ON

CPU_VRON

+5VS&+5VS_USB(4.83A)FDMC8 884

VSUS_PWRGD

VSUS_ON VRM_PWRGD

RT8202 H:EMB09N03V L:EMB09N03V*2

+1.1VSUS1.1VSUS_PWRGD SUSB_ON

+1.1VSUS (9.62A) +1.1VS (3.64 A) +1V_APU(5.6A)EMB09 N03V

EMB09 N03V+3VS AC_OK

RT8202VSD VSC SUSC_ON

+1.5V

+1.5V

(8.15A)

H:EMB09N03V L:EMB09N03V*2SUSB_ON

PM_DPRSLPVR

FDMC8 884

SYSTEM

+1.5VS (1.05A)

CPUPSI# SUSB_ON

UP771 3

+0.75VS (1A)

CLK_EN#

CPU_VRON SVD SVC

RT8870A NB: H:IRF8714 L:IRF8736 CPU: H:IRF8714 L:IRF8736VRM_PWRGD

VDDCR_NB VDDCR_CPU

(10A) (11A)

VDDCR_CPU_SENSE,VDDCR_NB_SENSE,VSS_SENSE,HT_CPU_PWRGD

+1.8VS (2.1A )MP224 9

3.Power Schematic Load Switch

Linear circuit Switching circuit

Charger circuit Power Latch circuit

a) Load switch

5VSYS_USB EN

When EN is high, the mosfet turn on

b) Linear circuitMp2249: Enable >1.8V Vout begin to climb Whem Enable12VSUS charge pump GND PGND SKIP#: switching mode choose

Detail introduction: SS and power off

d) VCORE circuit

RT8870 introducePin1 2 3 4 5

DescriptionRBIAS: : provide 2V reference EN: >2V IC begin workHi (A/D in) TS# ->Lo (BATT in) , CHG_EN ->Hi , CHG_LED ->Hi Check charge IC signal , BAT_CHG_OUT Change NG Xtal & RLC Component and fix any trace open NG OK OK

Check which Control signal for device is wrong

Confirm circuit, Change NG related component fix any trace open NG

OK

Check C.C & C.V Setting

Trace the related circuit, Change NG related Component/fix any trace openNG

OK

Change ECat firstly , and then Charge IC

Finish

charger MB39A1321Adapter/battery transform

Charge voltage, &electric urrent s set

Charge IC

Only adapter, insert an instant spike CAP absorbed by the system side; AC_BAT_SYS = A / D_DOCK_IN, PQ8903 not conduct, Adapter to the system power supply; ACOK down after, PQ8902 fully on; Only battery, PQ8902 off, PQ8903 conduction, Battery power supply to the system Adapter, Battery are the presence, PQ8902 turn, PQ8903 off, Adapter power supply to the system, while to the Battery Charge; charge IC with current share function, when the system current increases, charging the charge current will decrease.

2Prepare chargeBATSEL_1 BATSEL_0 VSET_EC ISET_EC CHG_ENAC_IN_OC# ACOK

SMB0_CL K SMB0_DA Battery T

MB39A132

Pack

EC

TS1#BAT1_IN_OC#

Battery DETECT

Adaptor DETECT

Battery and Adapter must exist. Battery notify the EC his voltage , current, capacity, and message. according to the battery state notify the charge IC how to charge or need to EC charge or not.(Pre-charging \ CC \ CV)

adapter in detect

ACOK=13.7V/17.4V Adapter present ACOK=Low AC_IN_OC#= Low Adapter absence ACOK=High AC_IN_OC#= High

Battery in detect

Battery present

TS1#=LowBAT1_IN_OC#=Low Battery absence TS1#=HighBAT1_IN_OC#=High Note:Have project directly TS1 # and BAT1_IN_OC # to short

3MB39A132 charging setBATSEL_1 BATSEL_0 VSET_EC ISET_EC CHG_ENAC_IN_OC# ACOK

SMB0_CLK SMB0_DAT

MB39A132

Battery Pack

ECTS1#BAT1_IN_OC#

Battery DETECT

Adaptor DETECTSmart charging EC control the VCHG & ICHG Model Share the circuit Support 2S/3S/4S battery

VSET_ECEC according to the information of battery, and set the charge voltage of single cell. ISET_ECEC according to the related number of battery and battery status (Pre-charging or Quick-charging) to set voltage electric current CHG_EN When BATSEL_0 BATSEL_1 VSET_EC ISET_EC setting finished, put CHG_EN to High and start charging.

BATSEL_0 BATSEL_1

BATSEL_0 BATSEL_1EC according to the series connection number, notify the charge IC and according to the VSET_EC message to set Battery charge voltage.

4 MAX8725 charging set

SMB0_CL K SMB0_DA Battery T

Pack

EC

BATSEL_2P# PRECHG CHG_EN#

MAX8725

TS1#BAT1_IN_OC# AC_IN_OC# CHG_AC_OK

Battery DETECT

Adaptor DETECT

BATSEL_2P#Ec tell Charge IC about batterys pack Set CC BATSEL_2P# =Lowis a 2P/3P batteryICC=2.5A BATSEL_2P# =Highis a 1P batteryICC=1.5A PRECHGEC detect the Battery Voltage Connector=>Cable=>Codec IC

HP Jack &S/PDIF

Amplifier TI----TPA3110 Class D AmplifierINT Left Speaker Close AMP output (Mute)

AMP Power

INT Right Speaker

MIC INT or EXT MIC Schematic:To ALC269 Codec

Repair skill EXT MIC & Head Phone detect the way of examining

Chapter 9 MODEM Repair Guide

Overview Diagram Circuit Repair Flow Chart Repair Technique Q & A (Repair Experience)

DiagramRJ-11

Azalia BUSRESET# & SYNC TIP & RING BIT_CLK

Modem Board CON.Modem

SB

Circuit

Repair Flow ChartStart Check Driver and Re-Assy and MDM cable NG Visual Inspection Check1.RJ-11 CON. 2.Modem CON. (on the M/B) 3.Connection RLC component Change Defect Component & Re-solder OK OK Verify Software and Assy problem

NGCheck Modem Type (by model) OK /Change New one Modem Board NG

Check Modem Board is OK ?

Check Modem CON. VCC(+3V) And RJ-11 CON. Signal is OK ?

1.Check Power source to Modem CON. Resistor and Trace 2.Check RJ-11 TIP / RING signal

Change Defect Component /Repair open trace NG

OK

Check AUDIO Link BUS Signal is OK ? (AC97/Azalia)

Use multi meter to measure1.BIT_CLK & SYNC 2.SDATA_IN/OUT 3.RESET#

Change audio Codec or audio controller (S.B) NG

OK

Finish

Repair Technique-Visual InspectionRJ-111-1CID

Visual Inspection 1.check RJ-11 connector is no Damage or Pin bend or Pin bad solder. 2.check Modem connector is no Damage or Pin bend or Pin bad solder.

Modem Connector (M/B)

1-2

3.R.L.C. components is not miss or damage 4.Check PCB trace is no open or scratch

CID

Repair Technique-Software Skill2-1 Software Skill 1.check Hardware Device is OK or not. 2.Check Device is working and software driver is correct. 3.Check Device Setting up is correct

2-2

Repair Technique-Assemble Problem3-1 Assemble Problem Check Assemble MDM Board connector to M/B connector is close ,and Cable is no scratch or damageIf problem still exist, 1.Please Check Modem Board is correct for testing model, 2.change new one to test.

3-2

Repair Technique-Measure Modem Signals4Use multi-meter to measure Modem signal is normal of Diode value. If the value is NG, Please check Audio codec and Audio Controller release circuit.

Repair Technique-Diode Value

Modem Board CON. Signal Name BIT_CLK SYNC RESET# SDATA_IN SDATA_OUT Diode Value 391 Signal Name 426 391 391 391 RING OL TIP OL Diode Value RJ-11

Chapter 10 USB Repair Guide

Overview Diagram Signal Description Theorem Repair Flow Chart Repair Technique Q & A (Repair Experience)

Diagram

Signal Description

Pin Define 1 2 3 4

Signal VSUS DD+ GND

Description Power signal Data signal Data signal Ground signal

Repair Flow ChartStart

1.Visual Inspection 2.Check Connector & Pins is OK ?

Change Defect Component & Re-solder NG

OK

Check USB Vcc(5V) is OK ?

OKCheck Fuse or Inductor and Trace Change Defect Component NG Check Resistor or Inductor and Capacitor and Trace and S.B OK Change Defect Component NG

Use multi-meter to measure Check USB- & USB+ Signal is OK ?

Check USB 48MHz is OK ?

Check Resistor and CLK Gen. and Trace

OK Change Defect Component NG

Change S.B

Finish

Repair Technique-Visual InspectionUSB Connector Broken

Check USB connector is ok or not

1-1

Check FERRITE BEAD is open or broken

1-2

Repair Technique-Measure Voltage & GNDCheck +5V_USB

2-1

Check GND

2-2

Repair Technique-Measure USB SignalsCheck USBP+

3-1

Check USBP-

3-2

Repair Technique-Diode Value of USB Pin4Signal Name 1 +5V_USB USBPUSBP+ GND Diode Value 701 604 605 0 Between +/- 5 +/- 5

Pin 1,2,3,4

2 3 4

+/- 5

Internal USB device Schematic

USB port HM65 has 12 USB2.0 port

USB2.0 SchematicUSB Power

USB Power To PCH DataData+

GND

USB 2.0 Schematic

Pin Define 1 2 3 4 VSUS DD+ GND +5V Power Data Data Ground

Repair skill General repair rule: 1. Check Software first: BIOS Update USB device Lock 2. Check H/W have bad or ok

3.H/W include USB Connector=>IO Board Cable=> PCH last

USB3.0

SchematicCLK & PCIEPOWER

If it is found external USB3.0 DEVICE can not recognize the external, may be used for confirmation External device and cable is the normal state? Device Manager the device is abnormal?If there is an exclamation point, to re-install the device in the OS, the driver, further confirmation. If the device can not see to open the machine to be recognized as a measurement signal can be sure the system clock is normal to provide? If the clock normal, and we have the power part of the measurement, including the device itself its own power (+3 V_USB3 / + VCC_12A), the general line on the road there will be short pad to enable us to confirm that the power system or the device.

There are problems, there is another external device provided to the power (+5 V_USB30 also need to confirm, and use the oscilloscope to confirm that the external device is plugged in, whether caused by power lost

Chapter 11 PCMCIA Repair Guide

Overview Diagram Theorem

Diagram+3V +5VVCC3_EN VCC5_EN Power (R5531V002) VCC VPP

+3VCCLK#

CRESET#

SBPCI BUS

CAD[0:31] C#

CLK_CBPCI (33MHZ)

XTAL

24.576MHZ

Slot Pinout (F3H)

CardBus Power Circuit(F3H)

Chapter 12 IEEE 1394 Repair Guide


Diagram+3V

PCI Clock:33MHz

Xtal : 24.576Mhz

SBR5C841 SMBus +3VEEPROM1394

Circuit

R5C841

Pin Define

R5C841

1394a Connector6 Pin

4 Pin

1394b Connector9 Pin

EEPROM Pinout

AT24C02N

Repair Flow Chart-(1)Start Visual Inspection Check 1394 Connector/Related Component no damage Can Write 1394 ID ? Check 1394 ID is OK ? PASS NG Re-write 1394 ID Address Check BIOS setting Fail Next Page 1394 ID Error OK OK Change NG Component

Check 1394 setting is unlock in the BIOS. Change NG Component /Fix any trace open NG

OK

Check 1394 +3V Voltage,

Measure 1394 Voltage

OK

Change NG Xtal /CLK Gen. Component NG

Check 1394 CLK 24.576/33MHz

Measure 1394 Clock

OK

Change NG Component /Fix any trace open NG Finish

Check 1394 Signals TPA0+/TPA0- , TPB0+/TPB0-

Use multi-meter to measure 1394 signals

Change IEEE 1394 Controller Chip

Repair Flow Chart-(2)1394 ID Address Error Re-write 1394 ID and check ID number is available ?

Visual Inspection check EEPROM/Connector/connection components is no damage

Change NG Component/ Fix any trace open NG Check EEPORM Voltage, +3V Change NG Component/ Fix any trace open NG

OK

OK

Check EEPROM Voltage

Use multi-meter to measure EEPROM signal

Check EEPORM Signals, 1394_SCL,1394_SDA

Change NG Component/ Fix any trace openNG

OK

Change EEPROM Chip

Finished

Repair Technique-Visual InspectionCID

Visual Inspection to check 1394 connector, controller & related component is not damaged. 1-1

CID

1-2

Repair Technique-Check Bios setting

Check 1394 setting is Unlock in the Bios.

2

Repair Technique-Measure Voltage

3Measure IEEE 1394 controller voltages: (RICOH R5C841) Pin : +3V

Repair Technique-Measure 1394 ClockUse Oscilloscope to check

1:1394 XTAL 24.576Mhz 2:33.3Mhz (PCI_CLK) are ok.

4

Repair Technique-Measure 1394 SignalsUse Multi-Meter to measure 1394 signals bias voltage value.Test Pin

TPA0+/TPA0- ,TPB0+/TPB0- (Fig. 5-2).

GND

5-1 If still cannot find any abnormal please try to change 1394 controller and check other device under PCI bus. If the problem is still existing after change 1394 controller, please change SB at last.

TPB0-

TPA0-

TPB0+ TPA0+

5-2

Repair Technique-Diode Value 1394 Pin

TPB0-

TPA0-

TPB0+ TPA0+

6

Repair Technique-Diode Value EEPROM

1394_SCL 1394_SDA

7

Chapter 13 Card Reader Repair Guide

Overview Diagram Signal Description Repair Flow Chart Repair Technique Q & A (Repair Experience)

Diagram+3VCD CMD

+VCC A

SBPCI BUS

CE# DA0~DA3 SDCLK/MSCLK

CLK_CBPCI (33MHZ)

XTAL

24.576MHZ

CD Card Detect CMD Comm WE# Write Enable CE# Card Enable CLK Clock PC Power WP Write Protect DA0~3 Data 0~3

Circuit-1

Circuit-2

Repair Flow ChartStart 1.Visual Inspection 2.Check Connector & Pins is OK ?

Change Defect Component & Re-solder

Confirm the problem Is MMC/SD error or MS/MS-pro error Change Defect Component Measure Voltage, VCCA = +3V is OK (Control signal MCVCC3EN# is Low active) Measure clock, Check related Resister 0 ohm

Check Voltage is OK ?

Change Defect Component

Check MSCLK/SDCLK is OK ?


Check Resister and Capacitor and MOS-FET

Use multi-meter to measure Check DATA0~ DATA3(CD) & CMD signal is OK ?

Change Card reader Controller Chip Finish

Repair Technique-Visual InspectionPin bend 1 Visual Inspection:1.check Card Reader connector is no damaged and bend.

2 Check MSCLK & SDCLK:1.Use multi-meter to measure MSCLK & SDCLK Pin(24) is correct

GND

Repair Technique-Check VCC & CMD3 Check VCC(3V)1.Use multi-meter to measure VCCA Pin(14,19,26)is correct

GND

4 Check CMD1.Use multi-meter to measure CMD Pin(23)is correct

GND

Repair Technique-DATA0~35 Check DATA 0~31.If memory type is disordered or data transfer fail please Use multi-meter to measure DATA0~ 3 Pin13 -> DATA0 Pin11 -> DATA1 Pin27 -> DATA2 Pin25 -> DATA3

GND

GND

Repair Technique-Diode Value of Card Reader PinPIN 6 3 4 1 2 3 4 5 5 6 7 8 8 7 9 10 Signal Name GND GND GND GND GND SD_WP NC NC FUNCSEL0 GND SDDATA1 SMCD3 Diode Value 0 0 0 0 0 OL OL OL 497 0 497 503 PIN 17 18 19 20 21 22 Signal Name SDCLK/MSCLK SMCD1 VCCA MSCD# GND SMCD0 Diode Value 492 503 596 598 0 503

2324 25 26 27 28

SDCMDSDCLK/MSCLK SDDATA3 VCCA SDDATA2 GND

496492 498 596 498 0

2

1

11 12

139 28 14 15 16

SDDATA0VCCA GND SMCD2

497596 0 503

Card ReaderAU6433

USB Interface

To Connector

N53SV not support XD

CR Schematic48Mhz Clock to PCH

POWER

Repair Skill Check BIOS is locked or not, driver is updated to the latest version. 2.Check Connector have dirt or bad connection => AU6433 IC How to check AU6433 IC is normally Each POWERs voltage levels CLOCK voltage levels and frquence Chip Reset pin pusj to HIGH to 3.3Volt

Chapter 14 SATA Repair Guide

Overview Diagram Theorem Q & A (Repair Experience)

DiagramClock GENCLK_SATA_ICH

SATA HDD

SATA BUS

SB

Circuit

SATA HDD

South Bridge

ODD&HDD HM65 has total 6 SATA ports 2 SATA 6 Gb/s (port 01) 4 SATA 3 Gb/s (port 2345)

SATA Port0

SATA Port2

SATA HDD

SATA ODD

HDD SchematicTo PCH

+5V POWER

Repair Flow ChartStart Visual Inspection/ Check Connector & Pins is OK ? Change Defect Component & Re-solder NG Load BIOS set up default/ update bios to latest version Check BIOS set up and Update latest BIOS version NG OK Check SATA VCC is OK ? Check Power+5VS & +3VScircuit Change Defect Component NG OK Check CLK_SATA_ICH is ok? Change Defect Component NG OK Check SATA pin Diode is OK ? Change Defect Component OK OK

Finish

Chapter 15 ODD Repair Guide

Chapter 15 Diagram Theorem Repair Flow Chart Q & A (Repair Experience)

DiagramClock GENCLK_SATA_ICH

S.B

IDE BUS SATABUS ODD ODD M/B

SB

Circuit

ODD Schematic+5V POWER POWER Enable Low Active

To PCH

For ZPODD use

ZPODD Introduction Zero Power ODD (ZPODD): When the ODD idle will automatically power off until the user to use the ODD, it will power on the mechanism Required with BIOS, ODD, and MB H / W can be Support Default idle 1min after the power was automatically cut

CD-ROM disc or a disc out within the ODD does not cut

power.

Repair Skill 1.Check BIOS have Lock ODD, BIOS is updated to the latest version, SATA Controller Driver for updates to the latest version.

2.Check Connector have dirt or bad connection => 5V Power

3.Check SATA signal

Introduction SATA Controller driver

Repair Flow ChartStartChange NG connector, re-solder NG soldering point, Change new CD/DVD-ROM FPC NG Load set up default in the bios/ update bios to latest version Load setup default and update to latest bios. NG Measure ODD Voltage Check ODD Vcc Voltage : Vcc=+5V Confirm the circuit, Change NG component NG OK Check CLK_SATA_ICH is ok? Change Defect Component NG OK OK

Visual Inspection to check Connector is no damaged, Soldering is ok.

OK

Use multi-meter to measure ODD signals diode value, compare with good MB.

Change S.B

Finished

Chapter 16 LAN Repair Guide


Diagram+2.5V_LAN +3V_LAN PCI_Reset #Clock :

1.25MHz2.CLK_LANPCI

PCI_BUS

SB

LAN IC

Transformer 10/100MBRTL 8100CL

SMBus

+3V_LANEEPROM

Diagram

Theorem-EEPROM Pin Pinout

93C46

What is MAC Address? Each device connected to a stard LAN needs a Data Link Layer address (or called hardware address), providing a means of unique identification. Each NIC has its unique, hard-coded MAC (Media Access ) address. It is a 48 bits (6 bytes) address written in a hexadecimal format. The first 3 bytes represents for vendor ID the remaining 3 bytes are serial number.

MAC: 000C6E 7D3D0FVender ID Serial Number

Repair Flow Chart-(1)START

Visual Inspection Check LAN Connector and Component is OK ?Check LAN MAC ID address/ BIOS setting up Next Page

Change Defect Connector/Component Can Write LAN ID ? Fail LAN ID Error NG Check Lan Voltage, +3V_LAN,+2.5V_LAN Confirm the circuit, Change Defect connection R,L,C or Transistor Components. NG OK Re-write LAN ID Address /Load BIOS default

OK

OK

OK

Measure LAN Voltage

Measure LAN Clock & RST#

Check Lan Xtal 25MHz, CLK_LanPCI 33MHz ,PCI_RST#Use multi-meter, to measure signal is 150 ohm ? LAN_RDP/RDN & LAN_TDP/TDN Use multi-meter to measure PCI_Bus AD signals AD0~AD31

Change NG Xtal/Clock Gen. NG

OK

Measure LAN Transformer

Change NG Transformer /Related R.C Component Fix any trace open NG

OK

Measure LAN AD signals

Fix any trace open/ Check NG device on PCI_Bus NG

OK

Change LAN Controller Chip OK

NG

Change S.B Finished

Repair Flow Chart-(2)LAN ID Error Re-write LAN ID and check ID number is available ?

Visual Inspection the EEPROM and related components is OK ?

Change NG Component/ Fix any trace open NG

OK

Check EEPROM VCC(+3V) is OK ?

Check Power to EEPROM VCC pin Connection or Trace is OK . NG

OK

Use multi-meter to measure SEEDI/SEECLK/SEECS signal

Check EEPROM to LAN Controller Trace is open?

OK Repair Defect open Trace NG

Change EEPROM Chip

Finish

Repair Technique-Visual InspectionCID

Visual Inspection to check 1.LAN(RJ-45) Connector/Pin is OK. 2.Related components is no miss and damage or burned

1-1

CID

1-2

Repair Technique-Check Bios setting

Check LAN port setting is UNLOCKED mode in the BIOS.

2

Repair Technique-LAN ID Check

LAN MAC ID

3 Check LAN MAC ID address is correct/available (Not 000000 000000) If LAN MAC ID fail, Please Re-write LAN MAC address first. If the problem still exist, check Voltage is OK and then use multi-meter to measure diode value of EEPROM

Repair Technique-Measure Voltage & CLK+2.5V_LAN +3V_LAN PCI_Reset#

4-1

Measure LAN controller voltages & CLK: 1: +3V_LAN

2: +2.5V_LAN

LAN IC

Clock : 25MHz & CLK_LANPCI

3: 25MHz 4: PCI_Reset# 5: CLK_LANPCI (33MHz)

4-2 Measure EEPROM voltages:+3V_LAN

Pin 8: +3V_LAN Pin 5: GND

93C46

Repair Technique-Measure Transformer Signals(1)Use Multi-Meter Transformer signals. to measure

Some signals should be connected together (Show as Fig.5-2, the signals marked Green color) If Transformer NG, please change it . 5-1

TDP TDN

LAN_TX+ LAN_TX-

RDP RDN

LAN_RX+ LAN_RX-

5-2

Repair Technique-Measure Transformer Signals(2)Use Multi-Meter to measure Transformer signals. TX signals and RX signals should be 150 diode value (Show as Fig.6-2, the signals marked black color)

6-1

If NG , Please confirm related Resistor (75 ohm) component.

TDP TDN

LAN_TX+ LAN_TX-

RDP RDN

LAN_RX+ LAN_RX-

6-2

Repair Technique-Diode Value EEPROM

93C46

Chapter 17 VGA Repair Guide

Overview Diagram Signal Description Repair Flow Chart Repair Technique Q & A (Repair Experience)

Diagram+3VSREDPIN1

PIN2

NB

GREENPIN3

BLUE

DDCDA HSYNC VSYNC DDCCL

PIN12 PIN13 PIN14 PIN15

+12VS

Signal Description1 6 11 ~ 5 10 ~ 15

Repair Flow Chart-(1)Start 1.Visual Inspection 2.Check Connector & Pins is OK ? Change Defect Component & Re-solder NG CRT Color error Confirm the problem Is color error or No display OK Next Page OK Change Defect Component NG OK Change Defect Component NG Check Resister and Capacitor and MOS-FET Use multi-meter to measure Check HSYNC/VSYNC/DDCDA/DDCCL signal is OK ? Clear CMOS and Load Default or Update new Bios NG Check MOS +12VS is OK Check HSYNC/VSYNC(+3.3V) is OK Check DDCDA(+3.3V)/DDCL(+5V) is OK (plug in CRT Connector) CRT No display/Other problem OK

Clear CMOS/ Bios check

Check Voltage is OK ?

Change North Bridge or Graphics Chip Finish

Repair Flow Chart-(2)Start 1.Visual Inspection 2.Check Connector & Pins is OK ?

CRT Color error

Confirm the problem Is color error or No display

Check diode Voltage is OK ?

Check Diode of +3VS is OK

OK Change Defect Component NG

Use multi-meter to measure Check R/G/B signal is OK ?

Change Defect Diode and RLC Component NG

OK

Change North Bridge/VGA

Finish

Repair Technique-Visual InspectionCID bend

1-1

Visual Inspection:1.check VGA connector is no damaged and bend.

2.Be sure VGA connector Pin Solder no open or short.

1-2

CID

Repair Technique-Clear CMOS / Check Bios2 If CRT is no display, please clear CMOS and load Bios default at first. And then, If problem still exist, please try to change Bios or update Bios.

Repair Technique-Measure VGA signalsGND

3-1Check the problem belongs to (i) RGB color error problem (ii) No display or display error problem.

test point

(i)

RGB color error problem please use multi-meter to measure which color (R.G.B.) signal is error. Trace the connection to confirm related inductor or capacitor is ok. If its not caused by R.L.C.Q. small components please change NB or Graphics Chip.

3-2 Pin 5,10,14,3,8,12,1,6

Pin 15,4,9,13,2,7,11

(ii) No display or display error (not included color error). Use the meter to measure Diode value on DDCCL &DDCDA, VSYNC & HSYNC. Trace the connection to confirm related R.C.L.Q. is ok. If all check items are no problem please change NB or Graphics Chip

Repair Technique-Diode Value of VGA PinPin Name Diode Value Pin Name Diode Value

Pin 5,10,14,3,8,12,1,6

Pin 15,4,9,13,2,7,11

4

VGA basics (1) RGB, HSYNC, VSYNC

VGA basics (2) CRT monitor detection RGB

R/G/B out(37.5ohm) (trace imp.) (50ohm) (trace imp.)

Monitor

PCH150ohm 150ohm 75ohm

Signal description (PCH)

Analog RGB

Sync

DDC

Block diagramMBRGB

PCH

DDC CLK/DAT

PIN

Description

1

REDGREEN BLUE NC GND GND-R GND-G GND-B NC

VGA_HSYNC VGA_VSYNC

2 3 4

D-sub connector

5 6 7 8 9

1011 12 13 14 15

GNDNC DDC DATA H-Sync V-Sync DDC CLOCK

SchematicDDC

R/G/B with PI filter

HSYNC/VSYNC with buffer IC

D_SUB Conn.

Debug Tips Common issues: CRT can not be detected (Fn+F8 cannot find the monitor) Exchange monitor to verify Check resistance: RGB connector side (with monitor): 37.5ohm RGB connector side (without monitor): 75ohm

Abnormal / No display Check PCH DAC power VccADAC Check RGB/Hsync/Vsync connection and related components (buffer IC, beads, PCH) Screen blinking Hsync/Vsync Overall color abnormal RGB

Abnormal Resolution Check DDC

Chapter 18 LCD Repair Guide


Diagram-1System Board Side+3Vs Display panel GMCHLCD_ENVDD

LCD Module Side

LVDS FFCLVDS BusLCD_ENBACK LCD_BACK_ADJ ADJ_BL

LVDS

BACK_OFF#

LID_RSM#

CableInverter Board

Inverter board

SBKBC

LID Switch

AC_BAT_SYS

Diagram-2System Board Side+3Vs ATI VGA AGP Bus/ PCI-ExpressLCD_ENVDD

LCD Module SideDisplay panel

LVDSLVDS Bus LVDS

FFC

MCHADJ_BL BACK_OFF#

LCD_ENBACK

CableLID_RSM#

Inverter Board Inverter board

SBKBC

LID Switch

AC_BAT_SYS

Circuit-1GMCH

Circuit-2LVDS

Circuit-3

Inverter board

Signal Define-1

Signal Define-2

Signal Define-3

Repair Flow Chart(1)StartVisual Inspection Check connector and related component are no damage

Change damaged Connector & any N.G RLC components NG

OK

Check / Clear CMOS BIOS setting &Fn key problem

1.Clear CMOS and Load Default 2.Check Fn + F5 or F6.etc. (depend on model request) NG

OK

Separate the symptom problem

LCD display too Dark

LCD No display/turn to white

LCD display abnormal

1

2Finish

3

Repair Flow Chart(2)Start1

LCD display too DarkMeasure Inverter Con. VoltageOK

Check AC_BAT_SYS signal= is 19V.

Change any NG related L&C ComponentNG

Measure Inverter Connector Control signal

1.Check BACK_OFF# , Voltage = 3V (from S.B) 2.Check LCD_ENBACK , Voltage = 3V (from N.B or Graphic) 3.Check LID_RSM# , Voltage = 3V 4.Check KBC ADJ_BL , Voltage = between 0~3V (from KBC) (depend on model different)

Trace the related circuit, Change any NG related RLC Component and control ICNG

OK

Change North Bridge or Graphics Chip

Finish


LCD No display/turn to whiteMeasure LVDS Con. VoltageOK

Check LVDS connector Voltage, +3Vs

Change any NG related R&C ComponentNG

Measure LVDS Voltage LCD_VCC

Check LVDS Voltage LCD_VCC, LCD_VCC =+3V And check control signal voltage, LCD_ENVDD = +3V (signal from NB or Graphic IC)

Trace LCD_VCC signals related circuit, Change NG RLC and MOSIC ComponentNG

OK

Change North Bridge or Graphics Chip Finish


LCD display abnormalMeasure Voltage

Check LVDS Voltage ( GMCH / Gfx ), +2.5V Check VGA Core Voltage ( GMCH / Gfx ), +1.5V or +1.05V / ATi_Vcore 1.0~1.2V (depend on RD design request) AGP / PCI-E: Check LVDS Clock for GMCH, 1.DREFCLK(#) 48MHz 2.DREFCLK(#) 96MHz Check LVDS Clock for Gfx, 1.CLK_MCH66/AGP66 66MHz 2.CLK_PCIE_PEG(#) 100MHz Check LVDS Data, LADATAP[0:2] & LADATAN[0:2] Check LVDS Clock, LACLKP & LACLKN

Change any NG related R&C ComponentNG

OK

Measure Clock

Change any NG RLC Component or CLK Gen./ Fix any trace openNG

OK

Use multi-meter to measure LVDS signal is OK ?

Change NG GMCH or Gfx IC/ Fix any trace openNG

OK

Change North Bridge or Graphics Chip

Finish

Repair Technique-Visual InspectionVisual Inspection1.check Inverter/LVDS connector is no NG or BAD solder 2.R.L.C. components & Trace is no damage or miss or openLVDS

Inverter

1-1

CID

1-2

Repair Technique-Check Bios settingCheck BIOS Setting: 1.Check display mode is OK, not only CRT mode 2.Load BIOS default setting and test again

2-1

2-2

Repair Technique-Check Fn KeyCheck Fn Key Setting: 1.Fn + F5 is brightness Down 2.Fn + F6 is brightness Up 3.Fn + F7 is LCD Back Light On/Off 4.Fn + F8 is LCD/CRT/TV Mode switching (all function key is depend on designer)

+3-1

+3-2

Repair Technique-Measure Voltage(1)Use Multi-Meter or Oscilloscope to measure Voltage: 1.If problem is LCD too Dark, Check AC_BAT_SYS (on Inverter Con.) signal = 19V 4-1 2.If problem is LCD No display or turn white Check LCD_VCC (LVDS Con.) signal = 3.3V

4-2

Repair Technique-Measure Voltage(2)Use Multi-Meter or Oscilloscope to measure Voltage: 3.If problem is LCD display abnormal, .Check LVDS voltage = 2.5V .Check VGA Core voltage = GMCH: 1.5V or 1.05V Gfx: ATi_Vcore 1.0 ~ 1.2V

5

Repair Technique-Measure Control SignalUse Multi-Meter or Oscilloscope to measure Control Signal voltage: 1.If problem is LCD too Dark Check BACK_OFF# = 3.3V Check LCD_ENBACK =3.3V Check LID_RSM# =3.3V Check ADJ_BL =0~3V 2.If problem is LCD No display or turn white Check LCD_ENVDD =3.3V

6

Repair Technique-Measure CLKUse Oscilloscope to measure Clock: GMCH platform: DREFCLK(#) = 48MHz (AGP Bus) DREFCLK(#) = 96MHz (PCI-E Bus) Gfx platform: 7-1 CLK_MCH66/AGP66 = 66MHz (AGP Bus) CLK_PCIE_PEG(#) = 100 MHz (PCI-E Bus)

7-296MHz

Repair Technique-Measure LCDS signalsUse multi-meter to measure LVDS Con. Pin signal is correct of Diode value and compare with GOOD M/B. Check LCDS Data signals, LADATAP[0:2] 8 LADATAN[0:2] Check LCDS Clock signals, LACLKP / LACLKN

Repair Technique-Diode of LVDS SignalLVDS Connector SignalSignal Name L1_TX0+ LADATAP[0:2] L1_TX1+ L1_TX2+ L1_TX0LADATAN[0:2] L1_TX1L1_TX2LACLKP LACLKN Ps (short for) : LADATAP[0:2] / LADATAN[0:2] L: LVDS A: LVDS channel A Data output P: positive N: negative L1_TXC+ L1_TXCDiode Value 443 442 443 443 442 443 441 441

LVDS basics LVDS (Low-voltage differential signaling ) Small current (3.5mA) through 100ohm +/-350mV

Signal description (PCH)

LVDS EDID: read panel information

Panel power and backlight control

Block diagramMB+3Vs

LCD panel

LVDS

PCHEDID CLK/DATL_BKLTCTL L_VDD_EN L_BKLTEN

Cable

LCD connector

LID_SW#

EC

LID Switch

AC_BAT_SYS

Schematic (1) +LED_VCC: LED power supply (7~20V)

+3VS_LCD: LVDS 3.3V power

Schematic (2) BUF_PLT_RST#: Platform reset signal from PCH

LCD_BACKEN_PCH: BL enable from PCH

LCD_BACKOFF#: BL enable from EC

LID_SW#: LID switch from HALL sensor IC

L_BKLTCTL_PCH: BL PWM control signal from PCH

L_VDDEN_PCH: LVDS 3.3V power enable

Debug Tips (1) Keyboard Function key: Fn + F5: back light Fn + F6: back light Fn + F7: back light ON/OFF Fn + F8: LCD/CRT/HDMI mode

+

+

Debug Tips (2) Common issues: Check cable and Panel first Abnormal display Check LVDS connection and PCH No display White screen Only backlight, no LVDS signal check LVDS Check PCH VccALVDS and VccTXLVDS Check +3VS_LCD (power enable circuit)

Black screen: Check power No backlight, but display is OK (EC, PCH, LID switch) check backlight enable circuits

Abnormal Resolution Check EDID connection

Chapter 19 BIOS Repair Guide

Overview Diagram Signal Description Introduction Repair Flow Chart Repair Technique Q & A (Repair Experience)

Diagram+3VS

Clock Gen.

Cloc k

BIOS

LPC Bus LAD[0~3]

SIO

PCIRST# INIT# L# DIS_SYSBIOS#

SB

Circuit

Signal Description-(1)




Introduction Memory Map SST 49XXX series Block Diagram Theorem

49xxx - Block Diagram

49xxx Pin/Signal Names-1

49xxx Pin/Signal Names-2

49xxx Reset-1

FWH Mode

49xxx Reset-2

PP Mode

49xxx Chip Read

49xxx Chip Write

49xxx Block Erase

49xxx Chip Erase

Product Ordering Information

SPI ROM

W25Q32BV:32Mbit/4MByte

You can use SPIROM BIOSs MFGID to determine XXXNAS.2XX 2MByte BIOS XXXNF1.2XX 4MByte 4M BIOS can be burnt Inside the SPIROM of 8m All right! !! But can't start the machine Because can not recognize ME FW

The signal amount is examined for SPI SI/SO at start the boot in the instant

SPI_SOSPI_SI

Often meet the question ,user update bios to fail and not boot. CPU_RST#???

Repair Flow ChartStart1.Visual Inspection 2.Use external Bios Boot up 1.Change Defect Component &Re-solder 2.Update Bios image file

Confirm circuit of Power IC, Check Power signal VDD(+3VS) Check connection RLC/diode Components Check CLK signal CLK(33MHZ) 1.Confirm circuit of CLK Gen. Change Defect Component Change Defect Component

1.Check Reset signal RST# 2.Check Control signal LFRAME#/INIT# DIS_SYSBIOS#

Confirm related circuit, Check Resister and Capacitor and MOS-FET


Measure LPC LAD[0~3] signal diode value is OK

1.Confirm PCB Trace

Fix any trace open

Change BIOS Chip / South Bridge

Finish

Repair Technique-Visual Inspection1-1 Visual Inspection 1.check BIOS pins is open or short

BIOS

1-2

Use External BIOS Boot up 1.If External BIOS can Boot up computer ,we can try to update BIOS image file first Jump Setting :1. 2. 3. 4. on off on off --- Boot from debug card off off on off --- Boot from M/B

on off off off --- Update M/B Bios From Debug Card

Repair Technique-Measure VoltageVDD 1 32

227 VDD

25

VDD

Check VDD Voltage: Check BIOS VDD(+3VS) Voltage : Pin 1 : +3V Pin 25: +3V Pin 27: +3V Pin 32: +3V

CLK

3

Check CLK Frequency Check BIOS CLK Frequency: Pin 31: 33MHZ

31

Repair Technique-Measure BIOS SignalRST#

Measure BIOS Controller Signal: 4 Pin 2 : RST# Pin 11: DIS_SYSBIOS#

2

DIS_SYSBIOS#

11

24 23

INIT# L#

Pin 23: LFRAME#

Pin 24: INIT#

5

Measure BIOS Pin signal of Diode value is normal or not? Pin 13: LAD[0] Pin 14: LAD[1]

LAD[1] LAD[2]

14 15

LAD[3]

17

LAD[0]

13

Pin 15: LAD[2] Pin 17: LAD[3]

Repair Technique-Diode Value of BIOS PinPIN 4 3 2 1 32 31 30 1 2 5 6 7 8 9 29 28 27 26 25 24 23 22 21 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 14 15 16 VPP RST# FPG13 FPG12 FPG11 FPG10 WP# TBL# NC NC DIS_SYSBIOS# NC LAD0 LAD1 LAD2 GND Signal Name Diode Value 431 778 OL OL OL OL 807 807 OL OL OL OL 690 690 690 0 PIN 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 Signal Name LAD3 NC NC NC NC NC LFRAME# INIT# VCC GND VCC GND IC FPG14 CLK VCC Diode Value 690 OL OL OL OL OL 683 607 431 0 431 0 OL OL 758 431

1011 12 13

Chapter 20 MEMORY Repair Guide

Overview Diagram Introduction 1.DDR 2.DDRII 3.DDR3 Signal Description Repair Flow Chart Repair Technique Q & A (Repair Experience)

Diagram(1)NB

Memory Module (DDR)GMCH /MCHMemory Bus

MA0~13 MD0~63 +2.5V ( for DDR ) +1.25Vs (for DDR )

CLK Gen.

CLK Gen.

Main Clock Gen.

DDR Clock Gen.

Diagram(2)N.B

Memory Module (DDR, DDR2)GMCH /MCHMemory Bus

MA0~13 MD0~63 +1.8V ( for DDR2 ) +0.9Vs ( for DDR2 ) +2.5V ( for DDR ) +1.25Vs (for DDR )

CLK Gen.

Main Clock Gen.

Diagram(3)N.B

Memory Module (SDR)GMCH /MCHMemory Bus

MA0~13 MD0~63+1.5Vs ( for DDR3 )

CLK Gen.

CLK Gen.

Main Clock Gen.

DDR Clock Gen.

DDR I vs DDR II

DDR3

Memory Type

200 pins

DDR SO-DIMM 200 pins

200 pins

DDR2 SO-DIMM 200 pins

204Pin

DDR3 1333 SO-DIMM 204Pin

Micro-DIMM

172 pin214 pin

Micro DDR-DIMM 172 pins Micro DDR2-DIMM 214 pins

DDR vs. DDR IIDDR Frequency Specs Data Rate Bus Frequency DRAM Core Frequency Prefetch Size Burst Length Data Strobe CAS Latency Write Latency 200/266/333/400 Mbps* 100/133/166/200 MHz 100/133/166/200 MHz 2 bit 2/4/8 Single DQS 1.5, 2, 2.5 1T 400/533/(667) Mbps* 200/266/(333) MHz 100/133/(166) MHz 4 bit 4/8** Differential Strobe: DQS, /DQS*** 3+, 4, 5 Read Latency-1 DDR II

DDR vs. DDR II count.Power Specs Core Voltage (VDD) 2.5V++ I/O Voltage (VDDQ) SSTL_2 (2.5V) Format Packaging Command Set Basic Timing Parameters TSOP (II), TBGA FBGA Same as DDR I Same as DDR I Bus Utilization and signal Integrity ODT OCD-calibration Posted CAS Additive Latency+++ Compatibility With DDR I 1.8V SSTL_1.8 (1.8V)

New fearture

Dual Channel The two channels handle memory-processing more efficiently by utilizing the theoretical bandwidth of the two modules, thus reducing system latencies, the timing delays that inherently occur with one memory module.

Rules to Enable Dual Channel Mode

Matched DIMM configuration in each channel Same Density (128MB, 256MB, 512MB, etc.) Same DRAM technology (128Mb, 256Mb, or 512Mb) Same DRAM bus width (x8 or x16) All either single-sided or dual-sided

DDR2 Electrical Interface Double Data Rate II IC's use 1.8 volt SSTL_18 compatible I/O [class II], how ever the supply voltage may be higher. SSTL-18: Stub Series Terminated Logic for 1.8v [JESD 8-15A]. Class II provides for higher power dissipation, Higher drive and a maximum current of 15.2mA

DDR2 Termination DDR2 modules contain the require resistor termination located on the memory chips using a technique called On-Die Termination [ODT]. While DDR1 modules have the necessary resistive termination located on the motherboard. Using ODT, DDR2 are able to reduce the parts count required for mother board while at the same time locate the terminations closer the the signal destination. The ODT termination can be turned on or off by the DRAM controller. Normally the terminations are turned on for Writes and disable for Reads. The value of the ODT termination is selectable based on the number of modules in the system. With one DIMM module the ODT value is set at 150 ohms [300W pull-up and 300W pull-down]. When two modules are loaded into the system the ODT value is exchanged to 75 ohms [150W pull-up and 150W pull-down] for the DIMM not being written to while the DIMM being accessed has its ODT turned off. Writing to the Extended Mode Register [EMR] controls the ODT presence and value. Three combinations are allowed; termination disabled, 75 ohms, and 150 ohms [ also 50 ohms]. The newest revision adds 50 ohm termination values. ODT improves the eye-structure over SSTL for either Single-Rank or Dual-Rank modules.

DDR 3

DDR 3 DDR3 SDRAM(Double Data Rate Three Synchronous Dynamic Random Access Memory) DDR3 SDRAM improves on DDR2 SDRAM in several significant ways: 1.Higher bandwidth due to increased clock rate 2.Reduced power consumption due to 90nm fabrication technology 3.Pre-fetch buffer is doubled to 8 bits to further increase performance 4.The voltage of DDR3 SDRAM DIMM's was lowered from 1.8V to 1.5V. This reduces power consumption and heat generation, as well as enabling more dense memory configurations for higher capacities.

Standard DDR3 SDRAM DIMM's

DDR 3 Top

DDR 3 Bottom

Memory I7 CPU(2820QM2720QM) can support 2 pcs 1600Mhz DIMM. 4 pcs DIMM only support 1333Mhz DIMM.

Qual Core CPU need use A1B1 Dual Core CPU need use A0B0

Memory POWER +3V

Introduction

+1.5 Volt+0.75 Volt

+0.75 Volt

Introduction

Memory Clock 667Mhz

Repair skill General repair rule: Check the specific DIMM have problem or not. Check some slot have problems or not. Check Connector have dirt or bad soldering (using the macro mode) .Check POWER and CLOCK level and frequency If its Memory issueuse MT420 memory test program to test

Repair Flow ChartStartOK Visual Inspection check memory slot is no bent pin or damaged. Change any damaged memory slot or component/ Fix any bad solder or trace open NG

Measure memory Voltage

Check Memory Voltage, 1.8V or 2.5V or 1.5V (depend on Memory type) Check Memory Vtt Voltage, 0.9Vs or 1.25Vs (depend on Memory type)

Fix any voltage regulator IC or related RLC component, Fix any trace open NG

OK

Measure memory Clock

Check Memory Clock, 100 / 133 / 166 MHz

Confirm the circuit, Fix any trace or RLC damaged/ change NG CLK Generator NG

OK

Measure memory Data /Address signals and control signals ,RAS#,CAS#,WE#

Use Multi-Meter to measure, Trace NG signals and compare with good MB

Fix any trace open or resistor damaged NG

OK

Change N.BFinish

Repair Technique-Visual InspectionVisual Inspection 1.Check memory slot / Pin is not damaged or bent pin inside.CID

2.Check related resistor , capacitor component no damage. 3.Fix any trace open or BAD solder 1-1

CID

1-2

Repair Technique-Measure Memory VoltageDDR Vtt Voltage =2.5V

Use Multi-Meter or Oscilloscope to measure Memory Voltage & Vtt Voltage . Memory Voltage: SDRAM: 3Vs DDR :2.5V DDR2: 1.8V Memory Vtt Voltage: DDR :1.25Vs DDR2: 0.9Vs

2-1

DDR Vtt Voltage =1.25V

2-2

Repair Technique-Measure Memory ClockUse Oscilloscope to measure Memory Clock(100Mhz,133Mhz,166Mhzdepends on different chipset & memory)

3-1

Memory CLK= 100,133,166MHz

3-2

Repair Technique-Measure Memory SignalsPlug Memory measure card into slot. Use Multi-Meter to measure memory signals bias voltage value. Compare with good MB if you find any unusual.

Diode Mode

4

Chapter 21 POST CODE Repair Guide

Overview What is POST CODE Using POST Code to Debug Appendix: (1)BIOS CODE Definition (2)BIOS Beep Code Q & A (Repair Experience)

What is POST Code POST : Power On Self Test

The tag thrown out by BIOS Usually, BIOS would output some number through 80ports. Using I/O access card (debug card), user could read those number. The POST codes used by Award, Phoenix, and AMI are different. These numbers mean something was executing in the system.

What is POST Code POST Code as BIOS executing process

Standard POST Code These numbers were used as standard process. BIOS Debug Code These numbers depend on various project.

POST 00, FFPOST Code 00,FF or Debug card shows all dots() / all 00 (1)Check Voltage: a.) Vcore ,if no Vcore check from power block circuit diagram b.) 1.5v,if no 1.5v check from power block circuit diagram c.) 2.5v,if no 2.5v check from power block circuit diagram d.) 3.3v,if no 3.3v check from power block circuit diagram e.) check for N/B,S/B voltage is ok or not (2)Check CLK: a.) CPU CLK,if no CPU CLK check from CLK gen. circuit diagram b.) N/B CLK,if no N/B CLK check from CLK gen. circuit diagram c.) S/B CLK,if no S/B CLK check from CLK gen. circuit diagram d.) 14.318MHz,if no 14.318MHz check from CLK gen. circuit diagram e.) CLK generator. if all no CLK,change 14.318MHz,and then change CLK gen. Before must check any open or short

(3)Check Power ok & Reset a.) H/W reset,if low voltage check circuit diagram, normal is capacitor bad b.) power supply power ok,if low voltage,normal is capacitor bad c.) CPU power ok,if low voltage check circuit diagram,and above signal d.) PCI reset,if low voltage check above signal and for S/B CLK,voltage e.) CPU reset,if low voltage check above signal and for N/B CLK,voltage f.) Check boot up sequence.

(4)Check control signal: a.) Check CPU control signal(ADS#,BRDY#) is ok or not b.) Check PCI control signal(FRAME#,IRDY#,TRDY#) is ok or not c.) Check others control signal is ok or not

00(no data) (1)Change BIOS (2)Check bios voltage (3)Check BIOS CLK (4)Check LAD0~3 (5)Check BIOS control signal (6)Check CPU control signal 00(Have address & data) (1)CPU N/B:HD0~63,HA3~HA31,control signal open or short (2)N/BS/B:PCI BUS(AD0~AD31,CBE0~CBE3) or HUB Link(HL0~HL10) or V_link or LDT BUS open or short (3)S/BBIOS:ISA BIOS(SA0~SA19,SD0~SD7) or LPC BUS (LAD0~LAD3) open or short

POST C0, D0C0 (Award) D0 (AMI) (1)Change BIOS (2)Check HD0~63 signal open or short (3)Check HA3~31 signal open or short (4)Check AD0~31 signal open or short (5)Check SM BUS is ok or not (6)Check all Voltage is ok or not ,especially 2.5V,3VS (7)Check all CLK is ok or not (9)Check SB, especially for Intel ICH4

POST C1, 9F, D3, EF.C1, E1, 9F, 99, Ad (Award) D3, D4, E0, E5, A4 (AMI) EF, EE, 28 (Phoenix) (1)Change BIOS (2)Check Memory voltage is ok or not, especially 3V, 2.5V, 1.8V , 1.25Vtt , 0.9Vtt (3)Check Memory CLK is ok or not (4)Check SM BUS is ok or not (5)Check MA,MD,CAS,RAS,CKE signal is Open or Short (6)DIMM socket not clean or bad (7)Check HA,AD,CPU control signal is open or Short

POST C3, C5, 05C3 (Award) (1)Change BIOS (2)Check memory problem (3)Check frequency problem C5 (Award) (1)Change BIOS (2)Check memory problem (3)Check HA3~31 is open or short

05 (Award) (1)Check KBC CLK is ok or not (2)Check KBC voltage is ok or not (3)Check KBC address,data,control signal is open or short (4)Change KBC

POST 0B, 13, 200B (Award) (1)Change BIOS (2)Check battery is ok or not (3)Check all CLK signal(14.318MHz,25MHz,40MHz.) (4)Check all voltage is ok or not (5)Check INIT,TRDY#,RADY signal is open or short (6) Check C/BE0~3 is short or not (7)Check all control signal(CPU,PCI,AGP) is open or short 13 (AMI) (1) Check 1.5V to NB 20 (AMI) (1) Check 2.5V , 1.25Vtt or 1.8V ,0.9Vtt (2) Check Memory problems (3) Check AGP signals

POST 31,3D,4131,3D (Award) (1)Check KBC CLK is ok or not (2)Check K/B problem (3)Check CPU control signal(HITM#,ITIN,ITNK#)is open or short (4)Check N/B control signal is open or short 41 (Award) (1)Change BIOS (2)Check SA0~SA16 is Open or short (3)Check MEMR#,MEMW# is open or short (4)Check HA3~31 is open or short

POST 4E, 61, 854E (Award)

(1)Check TRDY#,DEVSEL# is open or short (2)Check K/B problem 61 (Award)(1)Check Cache problem (2)Check CPU control signal is ok or not (3)Check N/B control signal is ok or not 85 (AMI) (1) Check Bios (2) Check NB (No display problem)

POST CODE Definition AMI POST Code definition AWARD POST Code definition Phoenix POST Code definition

AMI Bios Code Definition-1








Award Bios Code Definition-1









Phoenix Bios Code Definition-1









BIOS Beep Codes AMI BIOS Beep Codes AWARD BIOS Beep Codes Phoenix BIOS Beep Codes

BIOS Beep Codes for AMIBeeps 1 short 2 short 3 short 4 short 5 short 6 short 7 short 8 short 9 short 10 short 11 short 1 long, 2 short 1 long, 3 short 1 long, 8 short 2 short Error Message DRAM refresh failure Memory parity error Base 64K memory failure System timer failure Processor error Gate A20 failure Virtual mode processor exception error Display memory read/write error ROM checksum error CMOS shutdown register read/write error Cache error Failure in video system Memory test failure Display test failure POST Failure Description The programmable interrupt timer or programmable interrupt controller has probably failed A memory parity error has occurred in the first 64K of RAM. The RAM IC is probably bad A memory failure has occurred in the first 64K of RAM. The RAM IC is probably bad The system clock/timer IC has failed or there is a memory error in the first bank of memory The system CPU has failed The keyboard controller IC has failed,

Cher3 2(Ver 1.7)En

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