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Lenovo ThinkCentre M57 Hardware Maintenance Manual - Page 74

System board locations, Opening the cover, Clear CMOS/Recovery jumper

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7 System board System board locations 1 Microprocessor and heat sink 2 Modem daughter card (MDC) connector 3 Battery 4 Thermal sense cable connector 5 Memory connectors (2) 6 Serial (COM) connector 7 Front panel connector 8 Front USB connector 9 SATA IDE connectors (2) Opening the cover Important 10 ExpressCard USB connector 11 ExpressCard PCIe connector 12 Clear CMOS/Recovery jumper 13 Media card reader connector 14 Internal speaker connector 15 Front audio connector 16 Rear USB connector 17 Fan connector 18 Internal power distribution connector 68 Hardware Maintenance Manual

Section	Page
Chapter 1. About this manual	7
Important Safety Information	7
Important information about replacing RoHS compliant FRUs	7
Chapter 2. Safety information	9
General safety	9
Electrical safety	9
Safety inspection guide	11
Handling electrostatic discharge-sensitive devices	11
Grounding requirements	12
Safety notices (multi-lingual translations)	12
Chapter 3. General information	35
The ThinkVantage Productivity Center program	35
Additional information resources	35
Specifications	35
Chapter 4. General Checkout	37
Checking for power problems	37
Problem determination tips	38
Chapter 5. Diagnostics	39
PC-Doctor for Windows	39
PC-Doctor for Windows PE	39
Running diagnostics from the Rescue and Recovery workspace	39
PC-Doctor for DOS	40
Creating a diagnostic CD image	40
Creating diagnostic diskettes	40
Running diagnostics from the CD or diskettes	40
Navigating through the diagnostics programs	41
Running tests	41
Viewing the test log	42
Chapter 6. Using the Setup Utility	45
Starting the Setup Utility program	45
Viewing and changing settings	45
Using passwords	45
Password considerations	45
User Password	46
Administrator Password	46
Setting, changing, and deleting a password	46
Selecting a startup device	46
Selecting a temporary startup device	46
Selecting or changing the startup device sequence	47
Advanced settings	47
Exiting from the Setup Utility program	47
Chapter 7. Symptom-to-FRU Index	49
Hard disk drive boot error	49
Diagnostic error codes	49
Beep symptoms	65
POST error codes	66
Miscellaneous error messages	67
Undetermined problems	68
Chapter 8. Replacing FRUs	71
Locations	71
Connectors on the front of the computer	71
Connectors on the rear of the computer	72
Locating components	72
System board locations	74
Opening the cover	74
Replacing the CMOS battery	75
Replacing the microprocessor	76
Replacing the system board	78
Replacing a hard disk drive	79
Replacing an optical drive	80
Replacing a memory module	81
Replacing the modem	82
Replacing the Express card assembly	83
Replacing the Media Card Reader	84
Replacing the system fan assembly	85
Completing the FRU replacement	87
Chapter 9. FRU lists	89
Machine Type 6393	89
Machine Type 6394	99
Machine Type 6395	109
Machine Type 6396	123
Machine Type 6397	133
Chapter 10. Additional Service Information	145
Security features	145
Hardware controlled Passwords	145
Operating system password	145
Vital product data	145
BIOS levels	145
Updating (flashing) BIOS from a CD-ROM or diskette	145
Recovering from a POST/BIOS update failure	146
Power management	146
Automatic configuration and power interface (ACPI) BIOS	147
Automatic Power-On features	147
Appendix A. Notices	149
Television output notice	150