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ThinkPad 355x, 360x, 370C, 750x,
755C, 755Cs
Model 355x - 2619
Model 360x - 2620
Model 370C, 750x, 755C, 755Cs - 9545
Read This First ................. 197
What to Do First ............... 198
General Checkout . . . . . . . . . . . . . . . . 200
Memory Checkout . . . . . . . . . . . . . . 201
System Board and Processor Card Checkout
(370C, 750Ce, 755C, 755Cs) ........ 203
Keyboard/Auxiliary Input Device Checkout . . . 203
TrackPoint II checkout ............ 204
Pen and Digitizer Checkout (360P, 360PE, 750P) 205
Audio Card Checkout ............ 205
Diskette Drive Test ............. 206
Power Systems Checkout .......... 207
Power Management Features ........ 213
Symptom-to-FRU Index . . . . . . . . . . . . . 216
Numeric Error Codes ............. 217
FRU Codes . . . . . . . . . . . . . . . . . 220
Beep Symptoms . . . . . . . . . . . . . . . 221
No Beep Symptoms ............. 222
LCD Related Symptoms ........... 223
Keyboard/TrackPoint II Related Symptoms . . 223
Indicator Related Symptoms ......... 224
Power Related Symptoms .......... 224
Function/Audio Related Symptoms ...... 224
Peripheral Device Related Symptoms ..... 225
Other Symptoms . . . . . . . . . . . . . . . 226
Intermittent Problems . . . . . . . . . . . . 226
Undetermined Problems . . . . . . . . . . . 227
Related Service Procedures ........... 228
Status Indicators . . . . . . . . . . . . . . . 228
How to Run the Diagnostics ......... 229
Error Log . . . . . . . . . . . . . . . . . . 229
Checking the Installed Devices List ...... 230
Password Combinations . . . . . . . . . . . 230
How to Run the Low Level Format ...... 230
PC Test Card LED .............. 231
Fn Key Combinations ............ 231
How To Run the Keyboard Diagnostics .... 231
Product Overview . . . . . . . . . . . . . . . . 232
Models 355x, 360x .............. 232
Model 370C . . . . . . . . . . . . . . . . . 233
Model 750x . . . . . . . . . . . . . . . . . 233
Models 755C, 755Cs ............. 235
FRU Removals and Replacements ........ 236
Removals Models 355x, 360x .......... 237
1010 Rear Connector Door ......... 237
1015 Foot . . . . . . . . . . . . . . . . . 237
1020 Battery Pack . . . . . . . . . . . . . 238
Copyright IBM Corp. 1995 195