Lenovo ThinkSystem SR650 V2 Maintenance Manual page 5

Complete the parts replacement . . . . . . . . 381
Chapter 5. Problem
determination . . . . . . . . . . . . . 383
Event logs . . . . . . . . . . . . . . . . . 383
Light path diagnostics . . . . . . . . . . . . 385
General problem determination procedures . . . . 386
Resolving suspected power problems . . . . 387
Resolving suspected Ethernet controller
problems . . . . . . . . . . . . . . . 388
Troubleshooting by symptom . . . . . . . . . 389
Power on and power off problems . . . . . . 390
Memory problems . . . . . . . . . . . . 391
Hard disk drive problems . . . . . . . . . 395
Monitor and video problems . . . . . . . . 399
Keyboard, mouse, KVM switch or USB-device
problems . . . . . . . . . . . . . . . 401
Optional-device problems . . . . . . . . . 401
Serial-device problems . . . . . . . . . . 404
Intermittent problems . . . . . . . . . . . 406
Power problems . . . . . . . . . . . . . 407
Network problems . . . . . . . . . . . . 408
Observable problems . . . . . . . . . . . 409
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Software problems . . . . . . . . . . . . 413
Appendix A. Hardware
disassembling for recycle . . . . . . . 415
Disassembling the system board for recycle. . . . 415
Appendix B. Getting help and
technical assistance . . . . . . . . . . 417
Tech Tips . . . . . . . . . . . . . . . . . 417
Security advisories . . . . . . . . . . . . . 417
Before you call . . . . . . . . . . . . . . . 417
Collecting service data . . . . . . . . . . . . 418
Contacting Support . . . . . . . . . . . . . 419
Appendix C. Notices. . . . . . . . . . 421
Trademarks . . . . . . . . . . . . . . . . 422
Important notes . . . . . . . . . . . . . . . 422
Telecommunication regulatory statement . . . . . 422
Electronic emission notices . . . . . . . . . . 423
Taiwan BSMI RoHS declaration . . . . . . . 423
Taiwan import and export contact information . . . 423
Index . . . . . . . . . . . . . . . . . . 425
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