Trouble Shooting Guide msi

ATI @RS780

Trouble Shooting Guide

M/B:7549 PCB:1.3

BIOSVer: A7549AMS.701

ROHS

EDITOR

MAGICZHU DATA 2008.3.24 VER 1.0

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Agenda

1Summary of main IC........................................................................03 2Circuit block diagram.......................................................................05 3POWER MAP &CLOCK MAP..........................................................06 4Basic Voltage Circuit........................................................................07 5Verify Follow Chart ..........................................................................10 6Appendix....13

Power sequence..14 System reset sequence...21 Instruction of production..22

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1summary of main IC 1.1 Processor (AM2 940 ) locationCPU1 Integrate AMD 64 bits,allow to change frequcy. Compatible with existing 32-Bit Code Base Integrate memory controller to advance speed Using HT technogy to reduce delay-time and advance point to point transmission Support ACPI for a lot of low Power consumption states 1.2 North-Bridge (RS780) locationU15 Supports Athlon64/ Athlon64 Fx/ Athlon64 X2 CPU, include AM2 SOCKET

CPU,PhenomCPU

Supports HT1&HT3 ntegrated 2D&3D advance-controller,supports DX10.0 Intergrated Motion Video advance &Multiple Display&DVI/HDMI interface Supports PCI Express x16,x12,x8x4,x2,x1 graphy interface Supports dual channels up DDR2 1066MHZ and DDR3 1333MHZ Supports ATI HyperMemory Supports A-Link Express 1.3 South-Bridge (ATI SB700) locationU25 Supports A-Link bus databandwith up 2.5Gb/s Fixed PCIE REV2.3 protocol Supports LPC super i/o&Flash devices Integrate SATA-II controller ,supports six sata devices with 3Gb/s Supports 12 USB-PORTS with USB2.0 and USB1.1 Supports HD Audio 1.4 Memory (DDR II) locationDIMM1~DIMM2 Support 240-pin/1.8V DDR2 DIMM memory slot Support dual channels DDR2 400MHZ/533MHZ/ 667/800MHz Support up to 4GB of memory 1.5 SPI (BIOS) locationSPI1 The awdardBIOS f our MB has auto-detect I/O &Initial I/O 1.6 LAN Chip (Realtek 8111C) locationU14 Supports 10Mb/s,100 Mb/s,1000 Mb/s Supports PCI ExpressTM 1.1 Supports ACPI power manage,WOL and remote wake-up

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1.7 Audio Chip (HD AUDIO ALC888) locationU26 Supports 7.1 channels and 2 channels Integrated 5 DACs and 2 ADCs,all ADCs support 44.1k/48k/96kHz sample frequence

and all DACs support 44.1k/48k/96k /192KHZ sample frequence

Supports 16bit/20bit/24bit PCM Supports external PC BEEP Integrated 4 jacks with 2 sense pin Supports High-quality analog differential CD input 1.8 Super IO (F71882) locationU21 Supports Hardware monitor Integrated PARALLEL PORT,COM PORT,Floppy,Keyboard,Mouse 1.9 IC ACPI (W83310DGuP7707M5uP7501M8AS358LT1087SuP7706U8Up6261M8uP6103S8)U9U6U1 U19U24U22U18U2 (note:U2&U32 are the same chip) Turn switching power supply into the special voltage for the chip Supply power sequence for power on 1.10 CLOCK GENERATOR (RTMM880N) locationU16 Use to external 14.318MHz crystal as Baseband Reduced EMI 1.11 PWM FOURTH CHANNELS First channel: CHOKE13+Q83 Q94HIGH+Q90Q91LOW Second channel: CHOKE16+Q82Q86HIGH+Q84Q92LOW Third channel: CHOKE14+Q85Q93HIGH+Q87Q80LOW Fourth channel: CHOKE15+Q81HIGH+Q76Q89LOW 1.12 IC MOSFET DRIVER(ISL6612ACBZT) locationU35 Drives 2 NMOS as BUCK PWM controlling Supports fast frequence switching Supports direct short protection 1.13 IC PWM(ISL6323CRZ-T) locationU37 Integrated five PHASES for alternated workselectable switching Frequency

up to 1MHZ Over voltage protection Support SVID&PVID setting Integrated 2 PCS IC MOSFET driver

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1.14 MUX/DEMUX SWITCH (PI3HDMI412FT) locationU7 4-differential Channel 2:1 Mux/DeMux Support AC signal and DC signal with bidirectional HDMI 1.1,1.2 and 1.3 compatible Integrated ESD protection

2Circuit block diagram

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3.POWER MAP& CLOCK MAP

POWER MAP:

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CLOCK MAP

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4Basic Voltage Circuit 4.1 3VDUAL

Transformed from VCC5_SB by U22 at S5/S4/S3, and from VCC3 by Q55 at S1/S2/S0. 4.2 USB_PHY&+1.2VALW

Transformed from 3VDUAL by U24 at S0/S1/S2/S3/S4/S5.

5VDIMM:

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Transformed from VCC5_SB by U1 and Q7 at S4/S3;Transformed from VCC5 by U1 and Q10 at S2/S1/S0The 5VDIMM voltage value is equal to 0V at S5.

4.3 VDDA_25

The voltage value of VDDA_25 is 0V at S5/S4/S3;Transformed from VCC3 by U6 at S2/S1/S0.

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4.4 VCC_DDR

The voltage value of VCC_DDR is 0V at S5/S4,Transformed from 5VDIMM by U2,Q12 and Q20 at S3/S2/S1/S0.

4.5 VTT_DDR

The Voltage value of VTT_DDR is 0V at the S5/S4;Tranformed from VCC_DDR by U9 at S3/S2/S1/S0.

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4.6 1_8VREF&1.25VREF_NB&1_2VREF

Transformed from VCC5 by U18 at S2/S1/S0;The voltage value of them are 0V.

4.7 +1.8V_S0

Transformed from VCC3 by U19A and Q38 at S2/S1/S0;the voltage value of +1.8V_S0 is 0V

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at S5/S4/S3. 4.8 VCCA_1V2

Transformed from VCC_DDR by U19BQ39 at S2/S1/S0;the voltage value of VCCA_1V2 is 0V at S5/S4/S3.

4.9 VCC1_1

Transformed from VCC3 by U32 ,Q59 and Q58 at S2/S1/S0;the voltage value of VCC1_1 is 0V

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at S5/S4/S3.

5Verify Follow Chart The MB issues only includes process issue and component issue.

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Repair directly

measure all basic voltages including ATXVcore 3VDUAL5VSBVCC3VCC5VCC_DDR, etc

The ATX_PSON# is inactive, and then check the other steps as below: 1.Check whether COMS jumper is setting normal state(pin1-pin2) 2. Check whether ATX pin9 voltage value is about 5V.If ATX pin9 is less than 5V,you need to check VCC5_SB circuit 3. Check whether Y4 frequence value is about 32.768KHZ 4. Check whether Battery voltage value is 3V 5.Remove switching power supply ,clear CMOS ,reinsert swithching power supply ,and then power on 6. Check power on sequence

FAIL

OK

Check phenomena

Check whether PCB and component is burned,short and open? Check whether component mount and ?Check whether BIOS and all SLOTS fail ?Check whether jumper is on right location?Check whether

IC solder or shorting ,fit

Find out it and fix it

FAIL

OK

Inserting switching power supply and pressing power button see whether the MB is active with no the other device in the MB

FAIL

OK

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A. The CPU Fan isnt running:.check CPU-fans+12V,sense and GND pin B.The CPU Fan runs,but stop immediately,and then system power turn off at the some time Check whether the Vcore,+12V,GND is short: check the EL-CAP burning;re-insert CPU and FAN for thermal protection; check whether HTREF1 voltage value is about 1.2V with power on 3.The Fans runs abnormall and makes loud noise: CheckSYS-FAN1,SIO_SYS1_FAN,CPU-FAN,CPU_FANPWM,EC34,EC79

Insert CPU,Memory, HDD,Graphic card and FDD and then press power buttion. Note: For protecting CPU,measureVcore,VCC_DDR,VTT_DDR and VCC1_2 before insert CPU

Check whether the fans is active

OK

FAIL

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DEB

UG

SHO

W F/FF,ETC

FAIL

OK

(2) Burned MOS at power on

(1) bad design

1.4 Burned CPU

(3) Burned MOS at power on

(4) Human factors of produnction line

eg. The testing boards has some small solder wire

(1) PWM chip fail

(2) PWM chip is no good soldering

(3)No removing failed MOS at power on

+12V and CPU voltage is short at MOS burning

(4) Human factors of produnction line


1.3 Burned PWM chip

(2)Driver chip is no good soldering

(1) Driver chip fail

check whether CPU is active:

1.Vcore:

The abnormal CPU Vcore voltage value : check CPU,U9, VID;low Vcore voltage value

,check whether MOS fail;high Vcore voltage value,check whether FB is active;

the Vcore voltage value is 0V,check whether the 4Pins power connector touch well;check whether High

and Low MOS fail,check whether MOSVRM and IC traces fail( check components when the ICs fail);check whether VIDand CPU traces fail.

Power issues include the some situation

1.1 burned MOS:

(1) MOS component fail

(2) MOS Gate Resister dont solder

(3) MOS heatsinks dont mount a good site so burned at F/T test and ORT test

(4) Driver IC fail

(5) Damaged PWM chip

(6) Human factors of production line


1.2 burned driver chip:

Whether it is active;check whether PCB traces open;

The second ,check whether voltage value of Clock Gen;check whether basefrequency

value are about 14.318Mhz and check whether Clock Gen is running and the Clock Gen

sends all clocks are right.;check Resisters and Caps of all clocks;check whether PCB is

open or short;

debug card show F The F stands for no reset so that check CPU,NB,SB ,IC and MOS power;touch IC interface

whether its interface is very hot at standby or power on,the detail imformation as below:

First of all,check all power voltage value that includes +3V,+5V,+12V,-12V and Vcore ,and so on;check NB_PWRGD;check VRM_GD


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The MB will protect when the MOS are burned for AMD platform MB.If you power on at no

changing burned MOS,CPU will be damaged

(3)Human factors of produnctaion line

2.Reset signal

A_RST#:check whether A_RST# voltage value(R270)is from High to Low.If the A_RST#

isnt from High to Low,remove R270 to make sure of SB issue or NB issue.

LDT_RST# measure whether LDT_RST# (Q43.E)is running.If LDT_RST# signal dont run,check PWR_GOOD(VRM_GD),NB_PWRGD,SB_PWRGD,and so on. RSMRST#: check whether RSMRST# voltage value is 3.3V at S5 .The RSMRST# is charge of reseting sleep sequence.The RSMRST# level is still low so the MB doesnt operater well.At this state ,you can cut the trace for find the problem out. 3. Check CPU MEM_MA_ADD[15..0],MEM_MB_ADD[15..0],MEM_MA_DATA[63..0], MEM_MB_DATA[63..0],and so on.Check whether their traces are open or short;The Debug card shows the code,but hangs up . Clear CMOS or update BIOS.eg.The code is from C1 to C3 which stands Memory may fail Press chipset using check memory slot check VCC_DDR,VTT_DDR and VCC3 voltage value check whether VDDR_VREF voltage value is 0.9V check clock enable signals,the signal locations as below: DIMM Pin 52/171

CKE_1/0 .Check whether CPU slot is ok.

check memory clock signals ,the signal locations as below: Pin 185,Pin186,Pin137,Pin138,Pin220,Pin221

check SCL0 and SDA0 signals,the signal locations as below: Pin 119,Pin120 .Through measuring diode value make sure of MB

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I. Show wrong the BIOS verion,and so on .You need to flash BIOS software2.Show wrong CPU frequence value ,for the reason, CLK Gen issue or CMOS

setting

3.Show wrong memory information ,and then check memory ,DIMM slot,VCC_DDR,CLK and NB

4. Show no HDD or wrong Capacity HDD issue:check HDD POWER,SATA cable ,IDE interface.Clear CMOS ,and then Check CMOS setting and SB

5. SATA: Clear CMOS ,check CMOS Setup setting , capacitors of differential signal, SB ;

FAIL The screen show right imformation?

OK

FAIL 1. The KB LED is off :

check the KB power

2. The KB LED is on, but KB is inactive: check MSCLK,MSDAT,KBCLK,KBDAT

Keyboard is active?

OK

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1. mesure whether CMOS battery voltage vale is about 3V.Check

whether Clear CMOS jumper

insert Pin1 and Pin2 2. check whether the VCC3 very drop

at power on

1. RESET:

check RESET SEQUENCE

2. POWER BUTTON:

check POWER SEQUENCE

OK

FAIL Save the setting at CMOS

FAIL

OK

Press the reset ,and then press Power Button ?

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. check switching power supply,VGA card,memory ,and so on

. check all reference voltage value . check Memory clock value and voltage value ;

Try to reduce frequency and increase voltage. CPU exceeding set frequence,slightly

increase Vcore . If firstly enter OS then clear CMOS, you can

enter BIOS Setup and adjust Time as the previous right one

. Update BIOS . CLK deviates ; . Check CPU, NB, SB are overheating or not, fan

normally works or not

OK

FAIL

Include hang

up, blue

screen,auto-re

set,unable to

install os

. LAN card issue: 1. check CMOS setting 2. check lan chip frequence PCI issue: 1. check PCI slot 2. check power circuit USBCOMPARALLEL issue: 1. check whether their ports are short,open,and so

on 2. check power circuit 3. check resister of their signals 4. check SIO or SB . Audio issue 1. check power circuit 2. check CMOS setting and main bios 3. check input Capacitances and output Capacitances for noising sound or pop sound 4. audio chip fail 5. SB fail

Enter OS?

LAN card,PCI,USB,CO M,PARAL LEL,Audio device,and

FAIL

OK


Check whether CMOS setup setting is right,eg ,whether open ACPI and install driver ,update BIOS; check whether the SLP_S3# signal is active.If the SLP_S3# signal is inactive, check the traces whether open or short

Able to sleep or not?

FAIL

OK

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It includes two kinds of states: Dont Wake up; No display or hanging up come back Check whether CMOS setup setting opens about waking up ;update BIOS

END

FAIL Whether wake up?

OK

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6Appendix Power sequence

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System reset sequence \

Note: FP_RST# is active,except for RSMTST_IO(RSMRST#);

RSMTST_IO(RSMRST#) is active,except for FP_RST# .

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9Manufacture Process Notice

1. 2.VRM VOLTAGE CHECK TABLE

AMD Socket M2 Symbol

Fill by RD

Standard Spec.

Fill by RD

RD Spec.

Fill by RDRegulator Location

Fill by RD

Control

Signal

Fill by RD

Measu

reme n

t

Result

Fill by PE

CPU -VCORE VCCP 0 .8375 ~ 1.75V EC12.1 X

CPU -Vtt VCCA_1V2 1.175~1.225V Q39.S X Regulator_VCC_DDR V CC_DDR 1.8051.995V Q46.D X Regulator_ V TT DDR(DDR) VTT_DDR 0.85~0.95V EC16.1 X Regulate VD DA_25 V DDA_25 2.375~2.625 C58.2 X

Measu

Control reme nSymbol Standard Spec. RD Spec.Chipset

Fill by RD Fill by RD Fill by RDRegulator Location Signal t Fill by RD

Fill by RD ResultFill by PE

RS780/SB700 VCC1_1 1.14-1.26V EC29.1 RS780 VCC1_8 1.71~1.89V Q38.S SB700 USB_PHY 1.14~1.26V CP26.2 SB700 VCC_SB 1.14-1.26V Q50.S

Measu

Control reme nSymbol Standard Spec. RD Spec. Regulator LocationDEVICE Signal t Fill by RD Fill by RD Fill by RD Fill by RD Fill by RD Result

Fill by PE

Regulator_5V DUAL(Front) USB_FR4 4.75~5.25V U 30.8 X Regulator_5V DUAL(Front) USB_FR3 4.75~5.25V U 31.8 X

Regulator_5V DUAL(Front) USB_FR2 4.75~5.25V U 29.8 X Regulator_5V DUAL(Rear) USB_FR1 4.75~5.25V U 28.8 X

Regulator_5V DUAL(Rear) USB_LAN 4.75~5.25V U 12.8 Regulator_5V DUAL(Rear) USB_1394 4.75~5.25V U11.8

Audio_+5VR +5VR 4.75~5.25V X D37.C LAN power 1.14-1.26 AVDD18 CP11.2 X

3.135~3.465V VDD33 CP14.1 Regulator_VCC3_SB 3.135~3.465V 3VDUAL Q55.D X Regulator_VCC3 VCC3 3.135~3.465V Q55.S X

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DVT EVT1 EVT2 MVT1 MVT2 PCB version change Pin Define:

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2. Jumper Setting: JUMPER NAME DEFAULT DESCRIPTION JBAT1 1-2 KEEP CMOS

JBAT1 Short 1-2 pin 1-2: Keep CMOS data 2-3: Clear CMOS data

3.LAN refreshing program

L7549 8111C.rar

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1summary of main IC

Trouble Shooting Guide msi

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