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Lenovo ThinkCentre Edge 91 Hardware Maintenance Manual (HMM) (April 2012) - Th - Page 153

Mechanical FRUs, The FRUs listed in the following tables are not illustrated.

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Item # 9 10 10 10 FRUs System board, Intel B65 mATX system board • MT 1852: CTO A1B A2B A3B A4B A5G • MT 1853: CTO A1G A2G A3G A4G A5G A6G A7G A8G A9G B1G B2G B3G B4G B5G • MT 1855: CTO A1B A2B A3B A4B A5B A5H A6G A7G A8G A9G B1G B2G B3G B4G B5G B6G B7V B8V B9V C1V C2V C3V C4V C5Q C6Q C7Q C8Q C9Q D1Q D2Q D3Q D4Q D5Q D6Q D7Q D8Q D9Q E1Q E2Q E3Q E4Q E5Q E6Q E7Q E8Q E9Q F1Q F2Q F3Q F4Q F5Q F6B F7B F8B F9B G1B G2B G3B G4A G5A G6A G7A G8A G9A H1A H2A H3T H4T H5T H6T H7V H8V H9V K1V K2B K3Q K4Q K5Q K6Q K7Q K8Q L1G L2G L3G L4G L5G L6G L7G L8G L9G M1G M2G M3G M4Q M5Q M6Q M7Q M8Q M9Q N1Q N2Q N3A N4A N5A N6A N7T N8T P9A N9G P1G P2G P3G P4G P5G P6V P7V P8V Q1B Q2B Q3T Q4A Q5G • MT 3248: CTO A1P A2P A3P Power supply, ATX 280W power supply; Robust; for all countries except for JP • MT 1852: CTO A1B A2B A3B A4B A5G • MT 1853: CTO A1G A2G A3G A4G A5G A6G A7G A8G A9G B1G B2G B3G B4G B5G • MT 1855: CTO A1B A2B A3B A4B A5B A5H A6G A7G A8G A9G B1G B2G B3G B4G B5G B6G B7V B8V B9V C1V C2V C3V C4V C5Q C6Q C7Q C8Q C9Q D1Q D2Q D3Q D4Q D5Q D6Q D7Q D8Q D9Q E1Q E2Q E3Q E4Q E5Q E6Q E7Q E8Q E9Q F1Q F2Q F3Q F4Q F5Q F6B F7B F8B F9B G1B G2B G3B G4A G5A G6A G7A G8A G9A H1A H2A H3T H4T H5T H6T H7V H8V H9V K1V K2B K3Q K4Q K5Q K6Q K7Q K8Q L1G L2G L3G L4G L5G L6G L7G L8G L9G M1G M2G M3G M4Q M5Q M6Q M7Q M8Q M9Q N1Q N2Q N3A N4A N5A N6A N7T N8T P9A N9G P1G P2G P3G P4G P5G P6V P7V P8V Q1B Q2B Q3T Q4A Q5G • MT 3248: CTO A1P A2P A3P Power supply, 320 Watt ATX power supply (90 plus) for Brazil • MT 1852: CTO • MT 1853: CTO • MT 1855: CTO • MT 3248: CTO A1P A2P A3P Power supply, 280W Watt ATX power supply (85 plus)- for Brazil • MT 1852: CTO • MT 1853: CTO • MT 1855: CTO • MT 3248: CTO A1P A2P A3P FRU # 03T8350 45J9436 54Y8841 45J9431 Mechanical FRUs The FRUs listed in the following tables are not illustrated. CRU N 2 2 2 Chapter 10. FRU lists 149

Section	Page
Chapter 1. About this manual	5
Important safety information	5
Chapter 2. Safety information	7
General safety	7
Electrical safety	7
Voltage-selection switch	9
Safety inspection guide	9
Handling electrostatic discharge-sensitive devices	10
Grounding requirements	10
Safety notices (multi-lingual translations)	10
Chapter 3. General information	37
Lenovo Welcome	37
Lenovo ThinkVantage Tools	37
Lenovo Solution Center	37
SimpleTap	37
Additional information resources	38
Specifications	38
For machine types: 1852, 1853, 1855, 3247, and 3248	38
For machine types: 1857, 1893, 1895, 3250, and 3253	39
Chapter 4. General checkout	41
Problem determination tips	41
Chapter 5. Diagnostic programs	43
Lenovo ThinkVantage Toolbox	43
Lenovo Solution Center	43
PC-Doctor for DOS	44
Creating a diagnostic disc	44
Running the diagnostic program from the diagnostic disc	44
Navigating through the diagnostic programs	44
Running tests	44
Viewing the test log	46
Chapter 6. Using the Setup Utility program	47
Starting the Setup Utility program	47
Viewing and changing settings	47
Using passwords	47
Password considerations	48
Power-On Password	48
Administrator Password	48
Hard Disk Password	48
Setting, changing, and deleting a password	48
Erasing lost or forgotten passwords (clearing CMOS)	49
Enabling or disabling a device	49
Selecting a startup device	50
Selecting a temporary startup device	50
Selecting or changing the startup device sequence	50
Enabling ErP compliance mode	50
Exiting the Setup Utility program	51
Chapter 7. Symptom-to-FRU index	53
Hard disk drive boot error	53
Power supply problems	53
Diagnostic error codes	53
Beep symptoms	71
POST error codes	71
Miscellaneous error messages	73
Undetermined problems	75
Chapter 8. Replacing FRUs (Machine Types: 1852, 1853, and 1855)	77
Locations	77
Locating connectors, controls, and indicators on the front of your computer	78
Locating connectors on the rear of your computer	79
Locating components	80
Locating parts on the system board	81
Locating internal drives	82
Handling static-sensitive devices	82
Installing or replacing hardware	83
Removing the computer cover	83
Removing and reinstalling the front bezel	84
Installing or replacing a PCI card	86
Installing or replacing a memory module	89
Replacing the battery	91
Replacing the primary hard disk drive	92
Replacing the optical drive	94
Replacing the power supply assembly	96
Replacing the heat sink and fan assembly	98
Replacing the microprocessor	100
Replacing the system board	102
Replacing the rear fan assembly	105
Replacing the front audio and USB assembly	107
Completing the parts replacement	108
Chapter 9. Replacing FRUs (Machine Types: 1857, 1893, and 1895)	111
Locations	111
Locating connectors, controls, and indicators on the front of your computer	111
Locating connectors on the rear of your computer	112
Locating components	112
Locating parts on the system board	113
Locating internal drives	115
Handling static-sensitive devices	115
Installing or replacing hardware	116
Removing the computer cover	116
Removing and reinstalling the front bezel	117
Accessing the system board components and drives	118
Installing or replacing a PCI card	120
Installing or replacing a memory module	122
Replacing the battery	123
Replacing the hard disk drive	124
Replacing the optical drive	127
Replacing the power supply assembly	130
Replacing the heat sink and fan assembly	134
Replacing the microprocessor	137
Replacing the system board	140
Replacing the system fan assembly	143
Replacing the front audio and USB assembly	144
Completing the parts replacement	145
Chapter 10. FRU lists	147
Overall: 1852, 1853, 1855, 3247, and 3248	147
Mechanical FRUs	153
Keyboard and Mouse	156
Adapters and miscellaneous FRUs	181
Power Cords	182
Recovery discs	187
Windows 7 Starter Recovery CD	187
Windows 7 Home Basic 32 Recovery CD	188
Windows 7 Home Premium 32 Recovery CD	189
Windows 7 Home Premium 64 Recovery CD	190
Windows 7 Professional 32 Recovery CD	193
Windows 7 Professional 64 Recovery CD	194
Windows XP Professional 32 Recovery CD	196
Windows XP Professional Generic 32 Recovery CD	196
Overall: MT 1857, 1893, 1895, 3250, and 3253	199
Mechanical FRUs	206
Keyboard and Mouse	209
Adapters and miscellaneous FRUs	234
Power Cords	234
Recovery discs	239
Windows 7 Starter Recovery CD	239
Windows 7 Home Basic 32 Recovery CD	240
Windows 7 Home Premium 32 Recovery CD	241
Windows 7 Home Premium 64 Recovery CD	242
Windows 7 Professional 32 SP 1 Recovery CD	245
Windows 7 Professional 64 SP 1 Recovery CD	246
Windows XP Professional 32 Recovery CD	248
Windows XP Professional Generic Recovery CD	248
Chapter 11. Additional service information	253
Security features	253
Hardware-controlled passwords	253
Operating system password	253
Vital Product Data	253
BIOS levels	253
Updating (flashing) the BIOS from a disc	253
Updating (flashing) the BIOS from your operating system	254
Recovering from a POST/BIOS update failure	254
Power management	255
Advanced Configuration and Power Interface (ACPI) BIOS	255
Automatic Power-On features	255
Appendix A. Notices	257
Television output notice	258
European conformance CE mark	258
Trademarks	258