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Lenovo ThinkCentre M90p Hardware Maintenance Manual - Page 134

Locating parts on the system board

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1. Turn off the computer and disconnect all power cords from electrical outlets. 2. Open the computer cover. See "Opening the computer cover" on page 102. 3. Remove the front bezel by releasing the three plastic tabs and pivoting the front bezel outward. Figure 68. Removing the front bezel 4. Pivot the optical drive bay assembly upward. 5. Locate the system fan. See "Locating components" on page 103. 6. Disconnect the system fan cable from the microprocessor fan connector on the system board. See "Locating parts on the system board" on page 104. 7. Release the four tabs on the bottom of the system fan as shown, and then lift the system fan straight up to completely remove it from the chassis. 126 ThinkCentre Hardware Maintenance Manual

Section	Page
Chapter 1. About this manual	9
Important safety information	9
Important information about replacing RoHS compliant FRUs	9
Chapter 2. Safety information	11
General safety	11
Electrical safety	11
Voltage-selection switch	13
Safety inspection guide	13
Handling electrostatic discharge-sensitive devices	14
Grounding requirements	14
Safety notices (multi-lingual translations)	14
Chapter 3. General information	37
ThinkVantage Productivity Center	37
Lenovo Solution Center	37
SimpleTap	37
Additional information resources	37
Specifications	38
For machine types: 3029, 3054, 3139, 3219, 3246, 3282, 3349, 3421, 3544, 3652, 3769, 3934, 4992, 5206, 5267, 5325, 5384, 5450, 5474, 5498, 5554, 5852, 6232, and 6590.	38
For machine types: 3026, 3039, 3137, 3149, 3245, 3269, 3319, 3394, 3491, 3627, 3699, 3878, 4972, 5132, 5261, 5297, 5391, 5472, 5485, 5536, 5548, 5567, 5864, and 6213.	38
Chapter 4. General checkout	41
Problem determination tips	42
Chapter 5. Diagnostics	43
Lenovo ThinkVantage Toolbox	43
Lenovo Solution Center	43
Lenovo System Toolbox	44
PC-Doctor for Rescue and Recovery	44
PC-Doctor for DOS	44
Creating a diagnostic disc	45
Running the diagnostic program from a diagnostic disc	45
Navigating through the diagnostics programs	45
Running tests	45
Viewing the test log	47
Chapter 6. Using the Setup Utility program	49
Starting the Setup Utility program	49
Viewing and changing settings	49
Using passwords	49
Password considerations	49
Power-On Password	50
Administrator Password	50
Hard Disk Password	50
Setting, changing, and deleting a password	50
Enabling or disabling a device	50
Selecting a startup device	51
Selecting a temporary startup device	51
Selecting or changing the startup device sequence	51
Exiting from 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	54
Beep symptoms	69
POST error codes	69
Miscellaneous error messages	71
Undetermined problems	72
Chapter 8. Replacing FRUs (Machine Types: 3029, 3054, 3139, 3219, 3246, 3282, 3349, 3421, 3544, 3652, 3769, 3934, 4992, 5206, 5267, 5325, 5384, 5450, 5474, 5498, 5554, 5852, 6232, and 6590.)	75
Locating connectors on the front of the computer	75
Locating connectors on the rear of the computer	76
Removing the computer cover	76
Locating components	77
Locating parts on the system board	78
Removing and reinstalling the front bezel	80
Replacing a memory module	81
Replacing the power supply assembly	82
Replacing the heat sink and fan assembly	83
Replacing the microprocessor	85
Replacing the system board	87
Replacing the battery	89
Replacing a PCI card	91
Replacing the primary hard disk drive	93
Replacing the secondary hard disk drive	95
Replacing the optical drive	97
Replacing the front fan assembly	99
Replacing the rear fan assembly	101
Replacing the front audio and USB assembly	103
Replacing the internal speaker	104
Completing the parts replacement	106
Chapter 9. Replacing FRUs (Machine types: 3026, 3039, 3137, 3149, 3245, 3269, 3319, 3394, 3491, 3627, 3699, 3878, 4972, 5132, 5261, 5297, 5391, 5472, 5485, 5536, 5548, 5567, 5864, and 6213.)	109
Locating connectors on the front of the computer	109
Locating connectors on the rear of the computer	109
Opening the computer cover	110
Locating components	111
Locating parts on the system board	112
Replacing the battery	113
Replacing a memory module	115
Replacing a PCI card	116
Replacing the power supply assembly	118
Replacing the heat sink	120
Replacing the microprocessor	121
Replacing the system board	124
Replacing the hard disk drive	126
Replacing the optical drive	128
Replacing the internal speaker	129
Replacing the front audio and USB assembly	132
Replacing the system fan	133
Completing the parts replacement	135
Chapter 10. FRU lists	137
Overall: MT 3029, 3054, 3139, 3219, 3246, 3282, 3349, 3421, 3544, 3652, 3769, 3934, 4992, 5206, 5267, 5325, 5384, 5450, 5474, 5498, 5554, 5852, 6232, and 6590	137
Mechanical FRUs	153
Keyboard and Mouse	162
Adapters and miscellaneous FRUs	200
Power Cords	204
Recovery discs	215
Windows Vista Home Basic 32 Recovery CD	215
Windows Vista Home Basic 32 with IE9 Recovery CD	216
Windows Vista Business 32 Recovery CD	217
Windows Vista Business 32 Recovery CD with IE9 Recovery CD	220
Windows 7 Home Basic 32 Recovery CD	222
Windows 7 Home Basic 32 SP1 Recovery CD	225
Windows 7 Home Premium 32 Recovery CD	227
Windows 7 Home Premium 32 SP1 Recovery CD	231
Windows 7 Professional 32 Recovery CD	235
Windows 7 Professional 32 SP1 Recovery CD	243
Windows 7 Professional 64 Recovery CD	251
Windows 7 Professional 64 SP1 Recovery CD	255
Windows 7 Ultimate 32 Recovery CD	259
Windows 7 Ultimate 32 with MS SP1 Recovery CD	260
Windows 7 Ultimate 64 Recovery CD	260
Windows 7 Starter 32 Recovery CD	260
Windows XP Professional Recovery CD	261
Overall: 3026, 3039, 3137, 3149, 3245, 3269, 3319, 3394, 3491, 3627, 3699, 3878, 4972, 5132, 5261, 5297, 5391, 5472, 5485, 5536, 5548, 5567, 5864, and 6213.	267
Mechanical FRUs	283
Keyboard and Mouse	291
Adapters and miscellaneous FRUs	331
Power Cords	336
Recovery discs	348
Windows Vista Home Basic 32 Recovery CD	348
Windows Vista Home Basic 32 with IE 9 Recovery CD	349
Windows Vista Business 32 Recovery CD	349
Windows Vista Business 32 With IE9 Recovery CD	352
Windows 7 Home Basic 32 Recovery CD	354
Windows 7 Home Basic 32 SP1 Recovery CD	357
Windows 7 Home Premium 32 Recovery CD	360
Windows 7 Home Premium 32 SP1 Recovery CD	364
Windows 7 Professional 32 Recovery CD	368
Windows 7 Professional 32 SP1 Recovery CD	375
Windows 7 Professional 64 Recovery CD	383
Windows 7 Professional 64 SP1 Recovery CD	387
Windows 7 Ultimate 32 Recovery CD	391
Windows 7 Ultimate 32 with MS SP1 Recovery CD	391
Windows 7 Ultimate 64 Recovery CD	391
Windows 7 Starter 32 Recovery CD	392
Windows XP Professional Recovery CD	392
Chapter 11. Additional service information	399
Security features	399
Hardware-controlled passwords	399
Operating system password	399
Vital Product Data	399
Secure Managed Client	399
BIOS levels	399
Updating (flashing) BIOS from a disc	400
Updating (flashing) BIOS from your operating system	400
Recovering from a POST/BIOS update failure	400
Power management	401
Automatic configuration and power interface (ACPI) BIOS	401
Automatic Power-On features	401
Appendix A. Notices	403
Television output notice	404
Trademarks	404