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ThinkPad 755CE, 755CSE, 755CV,
755CX (9545)
General Checkout . . . . . . . . . . . . . . . . 393
Memory Checkout . . . . . . . . . . . . . . 393
System Board and Processor Card Checkout . 395
Keyboard/Auxiliary Input Device Checkout . . . 396
TrackPoint III Checkout ........... 396
Diskette Drive Test ............. 397
Power Systems Checkout .......... 398
Power Management Features ........ 405
Symptom-to-FRU Index . . . . . . . . . . . . . 408
Numeric Error Codes ............. 408
FRU Codes . . . . . . . . . . . . . . . . . 411
Beep Symptoms . . . . . . . . . . . . . . . 412
No Beep Symptoms ............. 413
LCD Related Symptoms ........... 413
Model 755CV Symptoms ........... 414
Keyboard/TrackPoint III Related Symptoms . . 416
Indicator Related Symptoms ......... 416
Power Related Symptoms .......... 416
Function/Audio Related Symptoms ...... 417
Peripheral Device Related Symptoms ..... 417
Infrared Related Symptoms .......... 418
Other Symptoms . . . . . . . . . . . . . . . 418
Intermittent Problems . . . . . . . . . . . . 418
Undetermined Problems . . . . . . . . . . . 419
Related Service Procedures ........... 420
Status Indicators . . . . . . . . . . . . . . . 420
How to Run the Diagnostics ......... 421
Error Log . . . . . . . . . . . . . . . . . . 421
Reset Pushbutton . . . . . . . . . . . . . . 422
Checking the Installed Devices List ...... 422
Password Combinations . . . . . . . . . . . 422
How to Run the Low Level Format ...... 423
PC Test Card LED .............. 423
Fn Key Combinations ............ 423
How To Run the Keyboard Diagnostics .... 424
Product Overview . . . . . . . . . . . . . . . . 424
FRU Removals and Replacements ........ 426
1010 Rear Connector Door ......... 427
1015 Foot . . . . . . . . . . . . . . . . . 427
1020 Battery Pack . . . . . . . . . . . . . 428
1030 Diskette Drive . . . . . . . . . . . . . 429
1040 Hard Disk Drive ............ 430
1050 IC DRAM Card or DIMM Adapter .... 431
1070 Diskette Drive Bezel .......... 434
1080 Keyboard Unit . . . . . . . . . . . . . 435
1090 Status Indicator . . . . . . . . . . . . 437
1100 Standby Battery and Front IR ...... 438
1110 Backup Battery . . . . . . . . . . . . 439
1115 Logic Assembly . . . . . . . . . . . . 440
1120 Shield Assembly . . . . . . . . . . . . 442
Copyright IBM Corp. 1995 391