PortÉgÉ 610CT - PA1123U, Exploded View

8/13/2019 Portg 610CT - PA1123U, Exploded View

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Toshiba TRR 4/00, PortgPage 1

Portg 610CT

General Specifications

Model610CT

Model Number: Portg 610CT - PA1123UXT

Power: AC Adapter: 100-240 VAC 50/60 HzDC output, 15 VDC 2.0A

Processor: Intel SL-Enhanced Pentium90Mhz. Co-processor imbedded. 2.9v/3.3v w/16KB internal cache:8KB Code and 8KB Data cache

Memory: 8MB expandable to 40 MB (16Mbit EDO DRAM, 64 bit, 3.3v: 60ns)

Drive(s): FDD: 3 1/2" 1.44MB (External 6"Lx4.17Wx.59"H, bundled w/unit, Wgt: .31 lbs.)HDD: (2.5"IDE), 720 million bytes, 26.9 - 39.5 Mbit/sec.

AccuPoint: Integrated Pointing Device

Display: 9.5" (7.6"Wx5.7"H) TFT-LCD Color Active Matrix, .30mm x .30mm, SVGA 640 x 480 (16.7M colorsof 16.7M palette); 800 x 600 (64K colors); 1024 x 768 (256 colors)

Warranty: 3 years parts and labor


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4/00, PortgToshiba TRR Page 2

Portg 610CT Exploded View


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Portg 610CT Part Numbers

Ref. # Code Part # Description PIR Comments

C806 PA1123UXT 610CT/720 Portg 610CT/720C806 PA1123U-T9A 610CT/720 (DOS) Portg 610CT/720, DOSC806 PA1123U-T9AB 610CT/720 (DOS) REMFG Portg 610CT/720, DOS (Remf.)C806 PA1123U-T9W 610CT/720 (WIN) Portg 610CT/720, Windows95-WFWG 3.11

C806 PA1123U-T9WB 610CT/720 (WIN) REMFG Portg 610CT/720, Win95-WFWG 3.11 (Remf.)1 C806 P000205080 PCB FM3SY2 Sys. Board, B360752110101-1 C806 P000207970 PCB FM3SY3 CEE Sys. Board, B360758010132 C806 P000204550 PCB FM3PS2 Pwr Sply, B360754810172-1 C806 P000210080 PCB FM3PS3 CEE Pwr Sply, B360759410163 C806 P000204560 PCB FM3SD2 Sound Board, B360753810103-1 C806 P000210090 PCB FM3SD3 CEE Sound Board, B360756710124 C806 P000204570 PCB FM3LE1 LED Board, B360751410105 C806 P000204580 PCB FM3LC2 LCD Flex Cable, B360754010156 (reserved)7 (reserved)8 (reserved)9 (reserved)10 C806 P000197540 Kybd UNIT UE0276P0911 C806 P000204590 HDD UNIT(720) IBM DBOA-2720, ZA1214P01 (686MB = 720 million bytes)12 C806 PA2489UR MAIN Batt. 4000mAh Lithium-Ion, 10.8V, 4,000mAh w/recycle label13 C806 P000204600 COLOR LCD Mod. Tosh. LTM09C031A, VF0139P0113A C806 P000205700 FL TUBE SET with cover & screw14 C806 P000197580 FL INVERTER UA0376P0315 C806 P000204630 NI-MH Batt. Backup Batt.16 C806 P000204640 NI-MH Batt. RTC Batt.17 C806 P000204650 MEMBRANE SWITCH AccuPoint control button contact18 C806 P000203500 FDD CABLE UL0196P0419 C806 PA2438U AC ADAPTER Input : 100-240VAC, 0.7A-0.4A, 50-60Hz, Output: 15V, 2A20 C806 P000182200 AC CORD SET30 C806 P000204610 BASE AssyN/S C806 P000251740 INSULATOR Attached to Base Assy, protects reset switch30A C806 P000204870 Conn. COVER Assy30B C806 P000204880 PC CARD COVER30C C806 P000204890 FDD Conn. COVER30D C806 P000204900 Batt. LEVER30E C806 P000204910 Batt. KNOB30F C806 P000204920 LED LENS30G C806 P000196900 SWITCH BUTTON30H C806 P000193180 TILT ANGLE, LEFT30I C806 P000193190 TILT ANGLE, RIGHT30J C806 P000193300 Batt. STOPPER30K C806 P000204930 Mem. CARD COVER ASSY Mem. Mod. Socket Cover30L C806 P000193340 KEY PLATE30N C806 P000193310 STOPPER SPRING30O C806 P000193320 SAFETY CONT, SPRING30P C806 P000204950 SPRING Batt. LOCK30Q C806 P000193240 BLIND SEAL30R C806 P000193350 SPRING PIN30S C806 P000193260 WAVE WASHER30T C806 P000193230 TILT SCREW31 C806 P000204860 BASE SUB Assy31A C806 P000202280 EARTH SPRING31B C806 P000198350 BOTTOM CUSHION31C C806 P000205680 BRG EARTH SPRING31D C806 P000204940 EJECTOR EARTH SPRING40 C806 P000204620 COVER Assy41 C806 P000204960 COVER SUB Assy Top Cover41B C806 P000193380 LED LABEL41C C806 P000194670 DISPERSIVE FILM42 C806 P000204980 LCD COVER Assy42A C806 P000204990 LATCH HOOK42B C806 P000205000 LATCH KNOB42C C806 P000180400 SPRING B40A C806 P000205010 HINGE COVER-LEFT40B C806 P000205020 HINGE COVER-RIGHT40C C806 P000205030 BRAKE HINGE, LEFT40D C806 P000205040 SENSOR HARNESS40E C806 P000205050 HINGE BRACKET


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Portg 610CT Part Numbers, (cont.)


40F C806 P000205060 INSULATOR, CORE HOLDER40G C806 P000205070 LCD HARNESS UL0195P0850 C806 P000204660 LCD MASK Assy50A C806 P000204670 LCD CUSHION51 C806 P000204680 SPEAKER HOLDER Assy

52 C806 P000204690 KB MASK Kybd Cover53 C806 P000204700 Batt. Conn. COVER54 C806 P000204710 CABLE GUIDE55 C806 P000204720 HDD BRACKET Assy56 C806 P000204730 SPEAKER CUSHION Protective Cover for Speaker57 C806 P000204740 P. NAME SEAL (C)57-1 C806 NP610T2 P. NAME SEAL (C) CBF58 C806 P000204750 P. NAME SEAL (M)58-1 C806 NP610T P. NAME SEAL (M) CBF59 C806 P000193590 LCD MASK SEAL60 C806 P000204760 SOUND SHIELD Assy Sound Board Cover61 C806 P000204770 FAN CUSHION62 C806 P000204780 MIC HOLDER63 C806 P000204790 CARE LABEL64 C806 P000204800 RTC Batt. HOLDER65 C806 P000193040 TRANSFER Conn.66 C806 P000204810 PC SLOT COVER67 C806 P000205930 FAN68 C806 P000204830 SPEAKER 8 Ohm, 0.5W69 C806 P000204840 MICROPHONE70 C806 P000193060 STICK CAP SET71 C806 P000204850 PRETTY BOX72 C806 P000205690 SYSTEM SHIELD Assy90 C806 P000203980 FDD 3.5 INCH PA2652U, ZA1189P0190A C806 P000203990 FDD COVER, UPPER90B C806 P000204000 FDD COVER, LOWER90C C806 P000204010 FDD INSULATOR90D C806 P000204020 SCREW90E C806 P000203370 DOOR COVER90F C806 P000204030 FDD Conn.100 C806 P000172160 SCREW M2.5X6Z101 C806 P000163450 SCREW M3X4102 C806 P000094030 SCREW M2X8103 C806 P000171690 SCREW M2X6103-1 C806 P000207940 SCREW M2X6 CBA104 C806 P000171940 SCREW M2X4104-1 C806 P000207950 SCREW M2X4 CBA GRIP type screw105 C806 P000161040 SCREW M2X4105-1 C806 P000207950 SCREW M2X4 CBA106 C806 P000172160 SCREW M2.5X6Z107 C806 P000193250 WASHER108 C806 P000188300 SCREW109 C806 P000169570 SCREW M2X6110 C806 P000160830 SCREW M2.5X4111 C806 P000206850 SCREW112 C806 P000101750 SCREW M2X5112-1 C806 P000207960 SCREW M2X5 CBAN/S C806 P000205210-V120 SYSTEM BIOS DISK - V1.20 BIOS Diskette, Version 1.20, marking F36000223026N/S C806 P000205210-V130 SYSTEM BIOS DISK - V1.30 BIOS Diskette, Version 1.30, marking F36000223033N/S C806 P000205210-V500 SYSTEM BIOS DISK - V5.00 BIOS Diskette, Version 5.00, marking F36000223040N/S C806 P000205210-V510 SYSTEM BIOS DISK - V5.10 BIOS Diskette, Version 5.10, marking F36000223057OP C806 NW2031U NW, 8MB Mem. Mod. Noteworthy 8MB Mem. Upgrade Mod.OP C806 NW2031UK NW, 8MB Mem. Mod. CEE Noteworthy 8MB Mem. Upgrade Mod.OP C806 NW2031UX NW, 8MB Mem. Mod. CEE Noteworthy 8MB Mem. Upgrade Mod.OP C806 KTT610/8 KINGSTON, 8MB Mem.OP C806 NW2032U NW, 16MB Mem. Mod. Noteworthy 16MB Mem. Upgrade Mod.OP C806 NW2032UK NW, 16MB Mem. Mod. CEE Noteworthy 16MB Mem. Upgrade Mod.OP C806 NW2032UX NW, 16MB Mem. Mod. CEE Noteworthy 16MB Mem. Upgrade Mod.OP C806 KTT610/16 KINGSTON, 16MB Mem.OP C806 NW2034U NW, 32MB Mem. Mod. Noteworthy 32MB Mem. Upgrade Mod.OP C806 NW2034UK NW, 32MB Mem. Mod. CEE Noteworthy 32MB Mem. Upgrade Mod.OP C806 NW2034UX NW, 32MB Mem. Mod. CEE Noteworthy 32MB Mem. Upgrade Mod.OP C806 KTT610/32 KINGSTON, 32MB Mem.50M C1G1 P000247320 FIR COVER


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51-69 (Reserved)70 C1G1 P000295350 LCD MASK ASSEMBLY Display Mask70A C1G1 P000266750 LCD CUSHION71 (Reserved)72 C1G1 P000257830 SPEAKER GUM

73 C1G1 P000258050 LCD MASK SEAL74 C1G1 P000286280 FL HARNESS INSULATOR75 C1G1 P000273710 LCD EARTH SPRING76 C1G1 P000287280 LCD HARNESS HOLDER77 C1G1 P000295360 LCD BRACKET, LEFT 133A78 C1G1 P000295370 LCD BRACKET, RIGHT 133A79 (Reserved)80 C1G1 P000286010 BASE ASSEMBLY80A C1G1 P000286060 BATTERY CASE ASSY80B C1G1 P000286070 POWER SWITCH ASSY80C C1G1 P000286080 MEMORY COVER ASSY80D C1G1 P000264210 BATTERY SPRING ASSY80E C1G1 P000264220 SWITCH LOCK LEVER80F C1G1 P000264230 PCMCIA LOCK LEVER80G C1G1 P000257770 EARTH SPRING80H C1G1 P000258980 BOTTOM CUSHION81-89 (Reserved)

90 C1G1 P000286210 SHUTTER ASSEMBLY PC Card Slot Cover91 C1G1 P000286220 RTC BATTERY HOLDER RTC Battery Cover92 C1G1 P000286230 HDD EJECTOR ASSEMBLY HDD Bracket93 C1G1 P000295380 CD-ROM BRACKET94 Not used95 C1G1 P000273720 EXPANSION CONN COVER96 C1G1 P000286260 BATTERY PCB STUD97 C1G1 P000286340 MODEM COVERS01 C1G1 P000227770 SCREW M2.5X2.6BS02 C1G1 P000215140 SCREW M2X3CS03 C1G1 P000207940 SCREW M2X6ZS04 C1G1 P000239510 GRIP SCREW M2.5X5ZS05 C1G1 P000207950 GRIP SCREW M2X4ZS06 C1G1 P000233430 SCREW M2.5X6ZS07 C1G1 P000256890 TY SCREW M2.5X6BZS08 C1G1 P000278250 GRIP SCREW M2X5.5ZS09 C1G1 P000209920 SCREW M2.5X4Z

S10 C1G1 P000261930 GRIP SCREW M2X4BNS11 C1G1 P000225470 SCREW M2X10ZS12 C1G1 P000261220 GRIP SCREW M2.5X6BNS13 C1G1 P000244070 GRIP SCREW M2.5X8ZS14 C1G1 P000254870 GRIP SCREW M3X4ZS15 C1G1 P000267150 GRIP SCREW M2.5X20BS16 C1G1 P000295460 TG SCREW M2.5X4ZOP01 C1G1 KTT-SO100/32 32MB SDRAM MEMORY Kingston 32MB SDRAM Memory ModuleOP01-A C1G1 KTT-SO100/64 64MB SDRAM MEMORY Kingston 64MB SDRAM Memory ModuleOP01-B C1G1 KTT-SO100/128 128MB SDRAM MEMORY Kingston 128MB SDRAM Memory ModuleOP02 C1G1 PA2450U UNIVERSAL AC ADAPTER Input: 100-240VAC 0.95-0.55A 50/60Hz, Output: 15VDC 3A, (U,C,Z)OP03 C1G1 PA2487URG BATTERY PACK Lithium-Ion, 10.8V, 4,000mAh with Recycle LabelOP04 C1G1 PA2488U BATTERY CHARGER (U,C,Z)OP5 C1G1 PA2717U ENHANCED PORT REP. III U,C,ZOP5-A C1G1 PA2717UN ENHANCED PORT REP. III U,C,Z (Wave Gray)OP6 C1G1 PA2730U ADAPTER, ENH PORT REP IIIOP7 C1G1 PA3024U-1PRP ENHANCED PORT REP. IV

OP8 C1G1 PA2731U PORT REPLICATOR U,C,Z BIOS updates can be obtained for the Toshiba Web SiteOP = OptionN/S = Not Shown

Portg 610CT Part Numbers, (cont.)



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Portg 610CT Disassembly Overview

This section explains how to remove FieldReplaceable Units (FRUs). It may not benecessary to remove all the FRUs in order toreplace one.

The chart is a guide to which FRUs need to beremoved in order to remove others. The sectionnumbers on the chart refer to the sections in theMaintenance Manual, Chapter 4.

Always start by removing the battery pack, next,optional items such as the optional PC card andoptional memory module, then follow the line onthe chart to determine which FRU you mustremove next in order to repair the one you thinkis causing the computer to operate improperly.

The information offered in this section is an overview of the Maintenance Manual, Chapter 4, ReplacementProcedures. If you have any questions or concerns regarding the proper procedure please refer to the Mainte-nance Manual through the Toshiba Service and Support Website before you proceed.

To install the 610CT battery pack, follow thesteps below.

1. Place the right end of the battery packat the red line marked on the alignmentguide. The battery pack should seatlevel with the computer.

2. Gently press down on the center of thebattery pack and at the same time pushit to the right. When the battery isnearly seated, you will feel a slightresistance. Press the battery incarefully until you feel it click into place,then lock the battery lock.

To remove the 610CT battery pack, follow thesteps below.

1. Turn off the power to the 610CT.Disconnect the AC adapter, power cord,and all external cables connected to thecomputer.

2. Close the display if it is open.3. Turn the computer upside down.4. Slide the battery lockto free the

battery release latch, then slide thebattery release latch to pop the batteryout slightly to the left.

5. A slight gap will open between the rightend of the battery pack and the com-puter. With your left hand, slip yourfingers into the gap and pull the batterypack to the left until it stops (about 1 cmor half an inch).

6. Grasp the left end of the battery packand lift it up to remove it.


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Portg 610CT Disassembly Overview, (cont.)

To remove an optional memory module from the610CT, follow the steps below.


2. Remove the battery pack.3. Turn the computer upside down.4. Remove two M2.5x4 screwssecuring

the memory module socket cover.5. Slide your fingernail or a thin object

under the cover and remove it.6. Remove two screws securing the

module to a brace at the center of themodule and set them aside.

7. Lift up on the plastic tab to disengagethe connectors, then grasp the moduleby the edges and remove it.

To install an optional memory module in the610CT, follow the steps below.

1. Position the connector on the bottom ofthe module over the correspondingconnector on the computer (align theholes on the side of the module over thescrew holes on the brace). Place yourfingers above the connector and pressfirmly but gently to assure a solidconnection. The module should beseated level.

2. Secure the module to the brace with twoscrews.

3. Fold down the plastic tab and lay thecover in place. Secure it with twoscrews.

4. Replace the battery pack.5. When you turn the computer on, it

should automatically recognize the totalmemory capacity. Verify that the addedmemory is recognized.

To remove an optional PCMCIA card from the610CT, follow the steps below.


2. Remove the battery pack and optionalmemory module.

3. Open the coverto the PCMCIA slot.4. Pull out the eject buttonfor the card

you want to remove and press thebutton. The card will pop out slightly.

5. Grasp the card and pull it out.


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To install an optional PCMCIA card in the 610CT,follow the steps below.

1. Insert the PCMCIA card. When the cardis almost fully seated, you will feel someresistance. Press gently to assure afirm connection, but donot force thecard into position.

2. When the card is fully seated, an ejectbutton will pop out; the top button is forthe top connector and the bottom buttonis for the bottom connector.

3. Pull the eject button slightly and bend itto lock the card.

4. Close the cover.5. Replace the battery pack and optional

memory module.

To remove the 610CT keyboard, follow thesteps below.

1. Turn off the power to the 610CT.Disconnect the AC adapter, powercord, and all external cables connectedto the computer.

2. Remove the battery pack, optionalmemory module, and optional PCMCIAcard.

3. Open the display if it closed.4. Use a thin metal tool to unlatch 12

latchesthat secure the keyboardcover.

5. Remove one M2x4 screw withwasherin front of the keyboard.

6. Insert the thin metal tool between thekeyboard and top cover to lift up thekeyboard. Lift up slightly so notches atthe back of the keyboard clear corre-sponding holes on the top cover. Donot remove the keyboard cable.

7. Disconnect the AccuPoint cablefromPJ2and the keyboard cablefromPJ7.

8. Lift out the keyboard.


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To remove the 610CT hard disk drive, follow thesteps below.


2. Remove the battery pack, optionalmemory card, optional PCMCIA card,and keyboard.

3. Remove one M2x4 screwfrom theHDD.

4. Pull up on the plastic tabon the HDDbracketand lift up the HDD andbracket.

5. Carefully pull the HDD and bracket todisconnect it from the connector andremove it from the unit.

6. Remove four M3x4 flat-head screwssecuring the bracket to the HDD andremove the bracket.

To remove the 610CT top cover, follow the stepsbelow.


2. Remove the battery pack, optionalmemory card, optional PCMCIA card,keyboard, and HDD.

3. Close the display and turn the computerupside down.

4. Remove eight M2x8 silver screws fromthe bottom of the computerand twoM2x6 screws from the batteryseatingarea. These screws secure the topcover to the bottom cover.

5. Turn the computer back over and openthe display panel. Remove the tapesecuring the cables and disconnect thefollowing cables: LED from PJ9, FLinverter from PJ13, display from PJ12,speaker from PJ18, display panel opensensor from PJ17, and microphone fromPJ2.

6. Unthread the microphone cable.7. Unlatch nine latchessecuring the top

coverto the base cover.8. Remove the top cover and display

assembly.


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To remove the 610CT RTC and backup batteries,follow the steps below.

1. Turn off the power to the 610CT.Disconnect the AC adapter, power cordand all external cables connected to thecomputer.

2. Remove the battery pack, optionalmemory card, optional PCMCIA card,keyboard, and top cover.

3. Peel off the tapesecuring the backupbattery cable.

4. Disconnect the RTC battery cablefromPJ15on the system board.

5. Slide the RTC batteryfree of thebrackets holding it in place to removethe battery.

6. Disconnect the backup battery cablefrom PJ21on the power supply boardand lift out the battery. Note that thecable is under the edge of the clearplastic protector.

To remove the 610CT AccuPoint control buttoncontact, follow the steps below.


2. Remove the battery pack, optionalmemory card, optional PCMCIA card,keyboard, top cover, RTC and backupbatteries.

3. Disconnect the cablefrom PJ3 on thesound board and lift off the AccuPointcontrol button contact.

To remove the 610CT sound board, follow thesteps below.


2. Remove the battery pack, optionalmemory card, optional PCMCIA card,keyboard, HDD, top cover, RTC andbackup batteries and AccuPoint controlbutton contact.

3. Remove one M2.5x3 screw.4. Remove the sound board cover.5. Carefully lift up the sound board so the

microphone and headphone ports areclear of the side cover and disconnectthe sound board cablefrom PJ20.

6. Lift out the sound board.


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To remove the 610CT power supply board, followthe steps below.


2. Remove the battery pack, optionalmemory card, optional PCMCIA card,keyboard, HDD, top cover, RTC andback-up batteries, AccuPoint controlbutton contact, and sound board.

3. Lift out the sound board support.4. Disconnect the power supply cable

from PJ14on the system board.5. Lift out the power supply board.

To remove the 610CT system board, follow thesteps below.


2. Remove the battery pack, optionalmemory card, optional PCMCIA card,top cover, hard disk drive, RTC andback-up batteries, AccuPoint controlbutton contact, sound board, and powersupply board.

3. Remove five M2.5x4 screws.4. Lift out the system board.5. Remove the metal cover.

To remove the 610CT fan, follow the stepsbelow.


2. Remove the battery pack, optionalmemory card, optional PCMCIA card,keyboard, HDD, top cover, RTC andbackup batteries, AccuPoint control

button contact, sound board, powersupply board and system board.

3. Disconnect the fan cablefrom PJ16.4. Remove two M3x3 screwssecuring the

fan to the system board and remove thefan.


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To remove the 610CT LED board and speaker,follow the steps below.


2. Remove the battery pack, optionalmemory card, optional PCMCIA card,keyboard, HDD, and top cover.

3. Remove two M2.5x4 screwssecuringthe LED boardand speaker assem-bly.

4. Remove the LED boardand speakerassembly.

5. Rotate the LED board out and unsnapfour latcheson the LED board toremove it.

6. Unsnap two latcheson the speaker toremove the speaker.

7. Remove the protective rubber cover.

To remove the 610CT display mask, follow thesteps below.


2. Remove the battery pack, optionalmemory module and PCMCIA card.

3. Remove two rubber sealsfrom thedisplay hinges to expose screwssecuring the display mask.

4. Remove two brass M2.5x6 screwsatthe bottom corners of the display mask.

5. Slip your fingers between the top of thedisplays cover and the display maskand pull out gently to release six

latches. Start with the latches at thecenter.6. Continue around the plastic cover to

release four latcheson each side andfive latchesat the bottom.

WARNING:To reduce the risk of accidentalelectric shock when you turn on the powerto check the FL inverter during disassembly,never touch the exposed areas that carryhigh-voltage.

To remove the 610CT FL inverter board, follow

the steps below.1. Turn off the power to the 610CT.Disconnect the AC adapter, power cord,and all external cables connected to thecomputer.

2. Remove the battery pack, optionalmemory module, PCMCIA card, anddisplay mask.

3. Remove two silver M2x6 screwsfromthe FL inverter board.

4. Turn over the board and disconnect theFL inverter cablefrom CN1and the FLcablefrom CN2.


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To remove the 610CT TFT color display module,follow the steps below.

CAUTION:When you remove the FL unit,be careful not to let any dust or other foreignmatter contaminate the LCD panel. Anycontamination can affect the performance ofthe unit.


2. Remove the battery pack, optionalmemory module, PCMCIA card, displaymask, and FL inverter board.

3. Remove four silver M2x6 screwsateach corner of the display module.

4. Rotate the display modulepartially outof the cover from left to right.

5. Disconnect the flexible cable fromCN11.

To remove the 610CT fluorescent lamp (FL),follow the steps below.


2. Remove the battery pack, optionalmemory module, PCMCIA card, displaymask, FL inverter board, and displaymodule

3. Place the display moduleface downand remove one M2.5x4 silver screw

and one M2.5x2 silver screwsecuringthe FL unit cover.

4. Lift off the FL unit cover.5. Free the FL cablefrom latches and

remove tapesecuring the cable.6. Remove the FL unit.

To remove the 610CT microphone, follow thesteps below.


2. Remove the battery pack, optionalmemory module, PCMCIA card,keyboard, HDD, top cover, and displaymask.

3. Pinch the microphone coverto free itfrom two latches,then remove thecover.

4. Remove the microphone.5. Remove the protective rubber cover

from the microphone.


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To remove the 610CT display cable, follow thesteps below.


2. Remove the battery pack, optionalmemory module, PCMCIA card,keyboard, HDD, top cover, displaymask, and microphone.

3. Remove four M2.5x5 screwsto releasethe cover assemblyfrom the displayassembly.

4. Disconnect the LCD harnessfrom theLCD flex cableand remove it from theunit.


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Interrupt Assignments

Interrupt Level Assigned to:

NMI RAM Parity Error, I/O Channel Error

0 Timer

1 Keyboard

2 PIC 2 for level 8 to 15

1 3 Secondary Communications (COM 2/4)*

4 Primary Communications (COM1/3)*

5 PRT 2* / Sound system*

6 RTC

7 LPT 1/3*

8 RTC

9 Sound system*

10 Sound system*

2 11 Reserved

12 PS/2 Mouse

13 Math co-processor

14 HDC

15 Reserved

* These I/O assignments are controlled by system setup.

System Memory Map

Address range Space (Kbytes) Use

'00000000' to '0009FFFF' 640 Conventional memory

'000A0000' to '000BFFFF' 128 Video RAM

'000C0000' to '000CFFFF' 64 Reserved

'000D0000' to '000DFFFF' 64 Reserved

'000E0000' to '000EFFFF' 64 VGA BIOS'000F0000' to '000FFFFF' 64 System BIOS ROM (Shadow RAM)

'00100000' to '007FFFFF' 7,168 System working memory

'00800000' to '027FFFFF' 32,768 Optional working memory

'02800000' to '0282FFFF' 192 The rest of system working memory

'02830000' to '07FDFFFF' Memory expansion in expansion port

'07FE0000' to '07FEFFFF' 64 System Management RAM

'07FF0000' to '07FFFFFF' 64 System BIOS ROM (duplicated)

Portg 610CT Interrupts / Memory Map


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Portg 610CT Input/Ouput Port Assignments

Port Map

Port address Device/function Port address Device/function

'000' to '01F' 82C37: DMA Controller 1 '280' to '2A7' Not used

'020' to '03F' 82C59: PIC 1 '2A8' to '2AF' Not used

'040' to '05F' 82C54: Timer '2B0' to '2B7' Not used

'060' to '06F' KBC '2B8' to '2BF' Not used

'070' NMI Mask Register '2C0' to '2DF' Not used

'070' to 07F' RTC '2E0' to '2E7' Not used

'080' to '09F' DMA Page Register '2E8' to '2EF' Serial Port 4 (COM 4)*

'0A0' to '0BF' 82C59: PIC 2 '2F0' to '2F7' Not used

'0C0' to '0DF' 82C37: DMA Controller 2 '2F8' to '2FF' Serial Port 2 (COM 2)*

'0E0' to '0EF' Special Register '2F8' to '2FF' Not used

'0F0' to '0F7' Math Coprocessor '300' to '31F' Not used

'100' to '1EF' VGA '320' to '32F' Not used

'1F0' to '1FF' HDC '340' to '33F' Not used

'200' to'207' Not used '378' to '37F' Parallel PRT 1*

'208' to '20F' Not used 380 to '387' Not used

'210' to '217' Not used '388' to '38B' Sound system (OPL3)

'218' to '21F' Not used '38C' to '38F' Not used

'202' to '20F' Not used '390' to '39F' Not used

'210' to '217' Not used '3A0' to '3AF' Not used

'218' to '21F' Not used '3B0 to '3BF' Parallel PRT 3*

'220' to '22F' Sound system* '3C0' to '3DF' CGA, EGA, VGA

'230' to '23F' Sound system* '3E0' to '3E7' Not used

'240' to '24F' Sound system* '3E8' to '3EF' Serial Port 3 (COM 3)*

'250' to '25F' Sound system* '3F0' to '3F7' FDC, HDC

'260' to '26F' Not used '3F8' to '3FF' Serial Port 1 (COM 1)*

'270' to '277' Not used '400' to '47F' Not used

'278' to '27F' Parallel PRT 2* '480' to '49F' DMA Hi-Page Register

* These port addresses can be specified by System Setup.

PortÉgÉ 610CT - PA1123U, Exploded View

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