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IBM 6656-HG2, Service Manual

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IBM 6656-HG2 Service Manual Download Page 16

CHECK U802, U881

NO

- 16 -

1.  CHECK PIN34, 35 

SOLDERING CONDITION

2. CHECK X201
3. TROUBLE IN U201

U821

POWER PINS

3.3V, 2.5V?

NO

CHECK U801, U821

X201

OSCILLATE AS 24M?

NO

CHECK U201 OR U401’S
SOLDERING CONDITION
AND CHECK CONNECTION
LINE FROM U201 TO U401

NO

TROUBLE IN CABLE 

OR LCD MODULE

J703’S PIN1

3.3V?

YES

YES

YES

YES

3. WHITE SCREEN (OSD IS NOT DISPLAYED) 

WHITE SCREEN

(OSD IS NOT DISPLAYED)

U401

PIN12 IS 65MHz CLOCK?

PIN2 IS 48KHz H-SYNC?

PIN3 IS 60Hz V-SYNC?

PIN1 IS 48KHz H-SYNC?

IS PULSE APPEARED 

AT SIGNAL 

PINS?

Input 

1024x768@60Hz Signal.

Summary of Contents for 6656-HG2

Page 1: ...COLOR MONITOR SERVICE MANUAL CAUTION BEFORE SERVICING THE UNIT READ THE SAFETY PRECAUTIONS IN THIS MANUAL MODEL T560 6656 HW2 T560 6656 HG2 ...

Page 2: ...90 264V 50 60Hz 1 2A Output DC 12V 3A 4 2 Power Consumption 5 ENVIRONMENT 5 1 Operating Temperature 10 C 35 C 50 F 95 F Ambient 5 2 Relative Humidity 10 80 Non condensing 5 3 Altitude 0 10 000ft 3 657m 6 DIMENSIONS with TILT SWIVEL 1 Full Up Condition Width 365 2 mm 14 38 Depth 235 mm 9 25 Height 435 8 mm 17 16 2 Folded Condition Width 365 2 mm 14 38 Depth 86 5 mm 3 41 Height 305 6 mm 12 03 7 WEIG...

Page 3: ...Landscape Portrait This monitor offers the ability to rotate between landscape and portrait modes Figure C The monitor rotates from Landscape to Portrait through 90 clockwise and from Portrait to Landscape through 90 anti clockwise Adjusting the Monitor Position Figure A 37 145 Figure B Maximum 4 87 inch 123 8 mm Maximum 3 863 inch 98 1mm Figure C ...

Page 4: ...oor with the front of the monitor at the bottom 4 Hold the metal clip and push it carefully until it clamps both of the stand and the arm firmly as shown in Figure D above The metal clip is used to keep the arm folded 5 You have to use the four screw holds on the bottom of the stand to attach the monitor to the surface of wall For additional information see the instructions supplied with the purch...

Page 5: ...ch as pencil or pen as this may result in damage to the panel Protect the module from the ESD as it may damage the electronic circuit C MOS Make certain that treatment person s body are grounded through wrist band Do not leave the module in high temperature and in areas of high humidity for a long time The module not be exposed to the direct sunlight Avoid contact with water as it may a short circ...

Page 6: ...Hz Resolution 640 x 350 720 x 400 TEXT 640 x 480 640 x 480 640 x 480 800 x 600 800 x 600 800 x 600 800 x 600 832 x 624 MAC 1024 x 768 1024 x 768 1024 x 768 Total Period E 800 449 900 449 800 525 864 525 840 500 1024 625 1056 628 1040 666 1056 625 1152 667 1344 806 1328 806 1312 800 Video Active Time A 640 350 720 400 640 480 640 480 640 480 800 600 800 600 800 600 800 600 832 624 1024 768 1024 768...

Page 7: ...wer ON OFF Button Switches the monitors on and off 3 ENTER Button 1 Displays main OSD menu 2 Enters highlighted menus and submenus 3 Selects highlighted option 4 Arrow Key Moves the cursor to highlight icons or make adjustments 1 Brings up Contrast control OSD 2 Left and Right arrows pressed together bring up auto setup 5 Exit Button 1 Exits from menus sub menus 2 Exits from OSD 3 2 1 4 5 Front Co...

Page 8: ...WIRING DIAGRAM 8 P704 P703 J1 Inverter Cable 6631T11012L Module link Cable 6631T11012M ...

Page 9: ...Link Cable connector 6 Remove the screw b 7 Remove the Tilt Swivel 2 BACK COVER REMOVAL 1 Remove four Screw Covers a 2 Remove four screws b 3 Remove the Back Cover Ass y b b a a a a b b 3 CABINET ASS Y REMOVAL 1 Remove four Screws a 2 Remove the Control PCB connerctor 3 Remove the Cabinet Ass y a a a a Cover Hinge Cover Piece Back Module Link Cabel Cabinet Control PCB Connector ...

Page 10: ...Remove five screws d and Metal Shield Main 7 Remove two screwS e 4 LCD MODULE REMOVAL 1 Remove Inverter Connector 2 Remove eight Screws a 3 Remove the Metal Frame from the LCD MODULE a a a a a a a a Inverter Connector 5 INVERTER ASS Y REMOVAL 1 Disconnector the CN3 CN4 2 Remove the Inverter Ass y Inverter Ass y Cover Stand Top Cover Hinge Remove the Cover Stand Body Cover Stand Body Metal Shield M...

Page 11: ... 11 BLOCK DIAGRAM ...

Page 12: ...rs digital signal to the receiver inside LCD module by method of abstraction The abstracted signals are pairs of TX0 TX1 TX2 TXC of which voltage swing is 0 5V each Its swing is similar to LVDS Low Voltage Differential Signal Transmitter U401 gets signals of clock H V sync 24bit RGB data and DE data enable from U201 and outputs TMDS Transition Minimized Differential Signal through TX pins When PD ...

Page 13: ...ftware 1 Adjustment for Factory Preset Mode 1 Run alignment program for LI561G on the IBM compatible PC 2 Select EEPROM all clear command and Enter 3 Display cross hatch pattern at Mode 1 4 Select COMMAND PRESET START command 5 Select FOS DEFAULT command and Enter 6 Press Y key it will automatically save all FOS data to EEPROM 2 Adjustment for White Balance 1 Display color 0 0 pattern at Mode 13 2...

Page 14: ...CILLATE AS 24MHZ NO NO POWER POWER INDICATOR OFF CHECK ADAPTER AND FIND OUT SHORT POINT OF EACH DC LINE OF 2 5V AND 3 3V CHECK J801 S VOLTAGE 12V NO CHECK U803 AND L805 S OPEN CHECK U803 PIN 2 3 WAVEFROM NO YES YES YES CHECK KEY CONTROL CONNECTOR ROUTINE 200kHz 40 duty 12V ...

Page 15: ...PLAYED CHECK ADAPTER J703 PIN10 12V NO 1 CONFIRM BRIGHTNESS OSD CONTRL STATE 2 CHECK MICOM DIM ADJ PORT J703 PIN1 5V NO REPLACE INVERTER ASS Y CHECK PULSE AS CONTACTING SCOPE PROBE TO CAUTION LABEL CONTACT PROBE TO CAUTION LABEL CAN YOU SEE PULSE AT YOUR SCOPE NO REPLACE CCFL LAMP IN THE LCD MODULE YES YES YES YES ...

Page 16: ...K U201 OR U401 S SOLDERING CONDITION AND CHECK CONNECTION LINE FROM U201 TO U401 NO TROUBLE IN CABLE OR LCD MODULE J703 S PIN1 3 3V YES YES YES YES 3 WHITE SCREEN OSD IS NOT DISPLAYED WHITE SCREEN OSD IS NOT DISPLAYED U401 PIN12 IS 65MHz CLOCK PIN2 IS 48KHz H SYNC PIN3 IS 60Hz V SYNC PIN1 IS 48KHz H SYNC IS PULSE APPEARED AT SIGNAL PINS Input 1024x768 60Hz Signal ...

Page 17: ... 17 CHECK CMF 401 402 403 404 S WAVEFORM NO CHECK U401 CHECK J703 S SOLDERING CONDITION YES 4 RAINBOW SCREEN RAINBOW SCREEN OSD IS NOT DISPLAYED ...

Page 18: ...C542 R809 R554 R559 R567 R525 C501 R501 X501 BA204 BA205 20 C280 R548 R547 C219 R549 R546 R228 D716 C830 C821 BA201 C234 L203 L202 BA202 BA203 BA206 C268 C267 C266 C210 C211 C204 C282 C281 C213 C215 R220 R221 R222 R223 R226 R224 R225 R227 D708 D709 ZD705 C429 C425 C433 R409 R408 L810 U501 L204 CA201 C217 C233 1 CA202 60 CA204 CA203 50 CA206 CA205 ZD702 C414 C702 C701 R721 R720 ZD701 D705 D706 D707...

Page 19: ...5 C206 C207 C250 C262 R218 C290 C291 C292 R728 R727 R511 R512 C212 C208 C209 C263 C264 C294 C295 C293 R516 R532 C507 C508 C214 C238 C203 C274 C296 R701 C506 R517 C509 R531 L201 C275 C276 R702 R704 R703 R709 C504 C842 C843 C404 C419 C408 C418 C420 C240 C241 C239 C237 C245 C251 R706 R705 C503 C402 R9 C405 R403 R405 C409 C242 C243 C244 C412 C411 C248 C247 C246 C253 C254 C252 R708 R707 C403 C410 C406 ...

Page 20: ... 20 1 2 7 6 5 8 9 3 10 14 15 16 17 20 30 29 21 23 24 22 25 27 28 26 19 12 11 4 13 32 31 18 EXPLODED VIEW ...

Page 21: ... LED LI561G KNOB TACT CONTROL LI561G LIGHT SAGE GRAY KNOB TACT CONTROL LI561G RAVEN BLACK PWB PCB ASSEMBLY SUB LI561G CONTROL TOTAL IBM T565 BRACKET LI561G HOLDER INVERTER INVERTER ASSEMBLY SAMSUNG LG1506 2 LAMP LI561G METAL FRAME SBHG T 0 8 LI561G METAL FRAME LI561G METAL SPRAY RAVEN BLACK CONNECTOR ASSEMBLY 12P H H 300MM UL 1061 28 COVER LI561G PIECE BACK PEARL WHITE COVER LI561G PIECE BACK STEA...

Page 22: ...METAL SUPPORT AL D CASTING LI561G STEALTH BLACK COVER LI561G HINGE LEFT PEARL WHITE COVER LI561G HINGE LEFT STEALTH BLACK COVER LI561G HINGE RIGHT PEARL WHITE COVER LI561G HINGE RIGHT STEALTH BLACK HOLDER CABLE DAMB 05 COVER LI561G STAND BOTTOM LIGHT SAGE GRAY COVER LI561G STAND BOTTOM RAVEN BLACK MAIN TOTAL ASSEMBLY LI561G IBM CL 25 METAL SHIELD MAIN LI561G COVER LI561G STAND TOP PEARL WHITE COVE...

Page 23: ...56 HG2 DATE 2001 8 17 S AL LOC NO PART NO DESCRIPTION SPECIFICATION C272 0CC221CK41A 220PF 1608 50V 5 R TP NP0 C274 0CK104CK56A 0 1UF 1608 50V 10 R TP X7R C275 0CC221CK41A 220PF 1608 50V 5 R TP NP0 C276 0CC221CK41A 220PF 1608 50V 5 R TP NP0 C277 0CC221CK41A 220PF 1608 50V 5 R TP NP0 C278 0CC221CK41A 220PF 1608 50V 5 R TP NP0 C280 0CK103CK51A 0 01UF 1608 50V 10 R TP B Y5P C281 0CK103CK51A 0 01UF 16...

Page 24: ... 5 R TP NP0 C832 0CK152CK51A 1500PF 1608 50V 10 R TP B Y5P C833 0CK104CK56A 0 1UF 1608 50V 10 R TP X7R C834 0CK103CK51A 0 01UF 1608 50V 10 R TP B Y5P C835 0CK104CK56A 0 1UF 1608 50V 10 R TP X7R MODEL T560 6656 HW2 T560 6656 HG2 DATE 2001 8 17 S AL LOC NO PART NO DESCRIPTION SPECIFICATION C836 0CK104CK56A 0 1UF 1608 50V 10 R TP X7R C837 0CH8107F611 100UF 16V M 85STD CYL R TP C838 0CC102CK41A 1000PF...

Page 25: ...W2 T560 6656 HG2 DATE 2001 8 17 S AL LOC NO PART NO DESCRIPTION SPECIFICATION R509 0RJ1000D677 100 OHM 1 10 W 5 1608 R TP R510 0RJ0000D677 0 OHM 1 10 W 5 1608 R TP R511 0RJ4700D677 470 OHM 1 10 W 5 1608 R TP R512 0RJ4700D677 470 OHM 1 10 W 5 1608 R TP R516 0RJ4700D677 470 OHM 1 10 W 5 1608 R TP R517 0RJ1000D677 100 OHM 1 10 W 5 1608 R TP R518 0RJ4701D677 4 7K OHM 1 10 W 5 1608 R TP R519 0RJ1000D67...

Page 26: ... TP R807 0RJ3602D677 36K OHM 1 10 W 5 1608 R TP R808 0RJ3602D677 36K OHM 1 10 W 5 1608 R TP R809 0RJ1003D677 100K OHM 1 10 W 5 1608 R TP R810 0RJ7502D677 75K OHM 1 10 W 5 1608 R TP J801 6612TAH003A DJ 023 KSD R ANGLE LB563B X201 6202TST001E SX 1 SUNNY CHIP 24MHZ 30PPM 20 X501 6202TST001E SX 1 SUNNY CHIP 24MHZ 30PPM 20 J1 6602T12002D 53261 0590 MOLEX 5P 1 25MM R A R1 0RH6800D622 680 OHM 1 10 W 5 D ...

Page 27: ... drive the internal D MOS 18 20 SYNC Input Output synchronization 7 8 8 9 Vcc Not regulated DC input voltage 2 3 2 3 OUT Stepdown regulator output 12 13 VFB Stepdown feedback input Connecting directly this pin to the output 3 3V and 5 1V are obtained a voltage divider is requested for higher output voltages For voltage below 3 3V see note 16 18 V5 1 Reference voltage externally available 4 5 6 13 ...

Page 28: ...SCHEMATIC DIAGRAM 28 1 VIDEO PROCESSOR GM5020 ...

Page 29: ... 29 2 PANEL LINK ...

Page 30: ... 30 3 MICOM ...

Page 31: ... 31 4 DC DC CONVERTER ...

Page 32: ... 32 5 CONNECTOR JACKS ...

Page 33: ... 33 6 KEY PART ...

Page 34: ...Aug 2001 Printed in Korea P NO 3828TSO018G ...

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