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Lenovo ThinkCentre A62 Hardware Maintenance Manual - Page 426

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9935 Power Cords Power cord - UK, Ireland, Singapore, Malaysia, Brunei, Hongkong (models A7H) Power cord - Taiwan (models A8V A9V A4V A5V A6V A2V) Power cord - Taiwan (models A8V A9V A4V A5V A6V A2V ) Power cord - Italy (models) Power cord - Italy (models) Power cord - Indonesia, Laos, Cambodia, Vietnam, Austria, Belgium, Croatia, Czechoslovakia, Finland, France, Germany, Hungary, Netherlands, Norway, Poland, Portugal, Romania, Spain, Sweden (models B1U B1F B2U B2F B3U B3F B4U B4F B5U B5F B6U B6F B7U B7F D1U D1F D3U D3F D3S D3Y D4U D4F D4S D4Y D5U D5F D5S D5Y D6U D6F D6S D6Y) Power cord - Indonesia, Laos, Cambodia, Vietnam, Austria, Belgium, Croatia, Czechoslovakia, Finland, France, Germany, Hungary, Netherlands, Norway, Poland, Portugal, Romania, Spain, Sweden (models B1U B1F B2U B2F B3U B3F B4U B4F B5U B5F B6U B6F B7U B7F D1U D1F D3U D3F D3S D3Y D4U D4F D4S D4Y D5U D5F D5S D5Y D6U D6F D6S D6Y) Power cord - Denmark (models) Power cord - Denmark (models) Power cord - Switzerland (models) Power cord - Switzerland (models) Power cord - Israel (models) Power cord - Israel (models) Power cord - South Africa (models) Power cord - South Africa (models) Power cord - India (models) Power cord - India (models) Power cord - Thailand (models) Power cord - Thailand (models) Power cord - Brazil (models) FRU# 41R3225 41R3278 41R3279 41R3232 41R3233 41R3208 41R3209 41R3212 41R3213 41R3228 41R3229 41R3236 41R3237 41R3220 41R3221 41R3341 41R3175 43N9029 43N9030 43N9044 CRU 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 9935 Windows XP Home Recovery CDs US English/UK/Asia Pacific (models) French/French Canadian (models) Greek (models) Italy (models) Brazilian (models) Spanish/LA (models) Danish (models) Dutch (models) Arabic (models) SV (Swedish) (models) Hebrew (models) Finnish (models) Norwegian (models) FRU# TBD TBD TBD TBD TBD TBD TBD TBD TBD TBD TBD TBD TBD CRU 1 1 1 1 1 1 1 1 1 1 1 1 1 420 ThinkCentre 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
Voltage-selection switch	11
Safety inspection guide	11
Handling electrostatic discharge-sensitive devices	12
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
For machine types: 7057, 7062, 7092, 9342, 9344, 9354, 9426, 948	35
For machine types: 7061, 7090, 9353, 9421, 9485, 9623, 9625, 970	35
Chapter 4. General Checkout	37
Problem determination tips	37
Chapter 5. Diagnostics	39
Lenovo System Toolbox	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
Enabling or disabling a device	46
Selecting a startup device	47
Selecting a temporary startup device	47
Selecting or changing the startup device sequence	47
Exiting from the Setup Utility program	47
Chapter 7. Symptom-to-FRU Index	49
Hard disk drive boot error	49
Power Supply Problems	49
Diagnostic error codes	50
Beep symptoms	67
POST error codes	68
Miscellaneous error messages	69
Undetermined problems	71
Chapter 8. Replacing FRUs (Types 7061, 7090, 9353, 9421, 9485, 9	73
Locating controls and connectors on the front of your computer	73
Rear connectors	73
Removing the cover	74
Locations	75
Locating parts on the system board	77
Removing and replacing the front bezel	77
Replacing the power supply	78
Replacing the system board	79
Replacing the microprocessor	83
Replacing a memory module	85
Replacing a PCI adapter card	86
Replacing the hard disk drive	88
Replacing an optical drive	90
Replacing the diskette drive	91
Replacing the rear fan assembly	92
Replacing the front fan assembly	93
Replacing the front audio/USB assembly	95
Replacing the power switch/LED assembly	95
Replacing the CMOS battery	96
Completing the FRU replacement	97
Chapter 9. Replacing FRUs (Types 7057, 7062, 7092, 9342, 9344, 9	99
Rear connectors	99
Removing the cover	100
Locations	100
Locating parts on the system board	101
Accessing system board components and drives	102
Replacing a memory module	103
Replacing the CMOS battery	104
Replacing the power supply	105
Replacing the system board	106
Replacing the microprocessor	110
Replacing the hard disk drive	112
Replacing an optical drive	114
Replacing the diskette drive	115
Replacing the power switch/LED assembly	115
Replacing the front panel card	116
Replacing the system fan assembly	117
Replacing a PCI adapter card	118
Completing the FRU replacement	119
Chapter 10. FRU lists	121
Machine Type 3656	121
Machine Type 3658	134
Machine Type 7057	147
Machine Type 7061	161
Machine Type 7062	174
Machine Type 7090	188
Machine Type 7092	201
Machine Type 9342	214
Machine Type 9344	227
Machine Type 9353	240
Machine Type 9354	253
Machine Type 9421	266
Machine Type 9426	279
Machine Type 9485	292
Machine Type 9486	308
Machine Type 9623	324
Machine Type 9624	337
Machine Type 9625	350
Machine Type 9705	364
Machine Type 9707	377
Machine Type 9795	391
Machine Type 9804	404
Machine Type 9935	417
Machine Type 9945	431
Machine Type 9946	445
Machine Type 9953	458
Chapter 11. Additional Service Information	473
Security features	473
Hardware controlled Passwords	473
Operating system password	473
Vital product data	473
BIOS levels	473
Flash update procedures	473
Updating (flashing) BIOS from a diskette	474
Recovering from a POST/BIOS update failure	474
Power management	474
Automatic configuration and power interface (ACPI) BIOS	474
Automatic Power-On features	474
Appendix A. Notices	477
Television output notice	478
Trademarks	478
Television output notice	478