Lenovo ThinkCentre A62 Hardware Maintenance Manual - Page 6

9426, 9486, 9624, 9707, 9787, 9804,

9945)

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93

Rear connectors

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93

Removing the cover

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94

Locations

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94

Locating parts on the system board

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95

Accessing system board components and drives

.

96

Replacing a memory module

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97

Replacing the CMOS battery

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98

Replacing the power supply

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99

Replacing the system board

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100

Replacing the microprocessor

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104

Replacing the hard disk drive

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106

Replacing an optical drive

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108

Replacing the diskette drive

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109

Replacing the power switch/LED assembly

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109

Replacing the front panel card

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110

Replacing the system fan assembly

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111

Replacing a PCI adapter card

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112

Completing the FRU replacement

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113

Chapter 10. FRU lists

........

115

Machine Type 3656

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115

Machine Type 3658

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128

Machine Type 7057

.

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141

Machine Type 7061

.

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155

Machine Type 7062

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168

Machine Type 7090

.

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182

Machine Type 7092

.

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195

Machine Type 9342

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208

Machine Type 9344

.

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221

Machine Type 9353

.

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234

Machine Type 9354

.

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247

Machine Type 9421

.

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260

Machine Type 9426

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273

Machine Type 9485

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286

Machine Type 9486

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302

Machine Type 9623

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318

Machine Type 9624

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331

Machine Type 9625

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344

Machine Type 9705

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358

Machine Type 9707

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371

Machine Type 9795

.

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385

Machine Type 9804

.

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398

Machine Type 9935

.

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411

Machine Type 9945

.

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425

Machine Type 9946

.

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439

Machine Type 9953

.

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452

Chapter 11. Additional Service

Information

.............

467

Security features

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467

Hardware controlled Passwords

.

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467

Operating system password

.

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467

Vital product data

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467

BIOS levels

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467

Flash update procedures

.

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467

Updating (ﬂashing) BIOS from a diskette.

.

.

468

Recovering from a POST/BIOS update failure

.

.

468

Power management

.

.

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468

Automatic conﬁguration and power interface

(ACPI) BIOS

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468

Automatic Power-On features

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468

Appendix A. Notices

........

471

Television output notice

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472

Trademarks

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472

vi

ThinkCentre Hardware Maintenance Manual

Lenovo ThinkCentre A62 Hardware Maintenance Manual - Page 6

FRU lists, Additional Service, Information - 9486

Page 6 highlights

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