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Lenovo ThinkStation C20 Hardware Maintenance Manual - ThinkStation C20/C20x - Page 113

by breaking or cutting the rubber mounts and gently pulling the rear fan assembly out of the chassis.

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To replace the rear fan assembly, do the following: 1. Remove all media from the drives and turn off all attached devices and the computer. Then, disconnect all power cords from electrical outlets and disconnect all cables that are connected to the computer. 2. Remove the computer cover. See "Removing the computer cover" on page 74. 3. Remove the front bezel. See "Removing and reinstalling the front bezel" on page 75. 4. Remove the PCI card holder for easier access to the rear fan assembly. See "Removing and reinstalling the PCI card holder" on page 76. 5. Your computer supports two rear fan assemblies. Locate the rear fan assembly you want to replace. See "Locating components" on page 70. 6. Disconnect the rear fan assembly cable from the appropriate rear fan connector on the system board. See "Locating parts and connectors on the system board" on page 71. 7. The rear fan assembly is attached to the chassis by four rubber mounts. Remove the rear fan assembly by breaking or cutting the rubber mounts and gently pulling the rear fan assembly out of the chassis. Figure 37. Removing the rear fan assembly 8. Install the new rear fan assembly by aligning the new rubber mounts with the corresponding holes in the chassis and push the rubber mounts through the holes. Note: The new rear fan assembly you received will have four new rubber mounts attached. 9. Pull on the tips of the rubber mounts until the rear fan assembly is secured in place. Chapter 9. Replacing FRUs 107

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
Lenovo ThinkVantage Tools	35
Lenovo Solution Center	35
SimpleTap	35
Lenovo Welcome	35
Additional information resources	36
Specifications	36
Chapter 4. General Checkout	37
Problem determination tips	37
Chapter 5. Diagnostics	39
Lenovo ThinkVantage Toolbox	39
Lenovo Solution Center	39
PC-Doctor for DOS	40
Creating a diagnostic disc	40
Running the diagnostic program from the diagnostic disc	40
Navigating through the diagnostics programs	40
Running tests	40
Chapter 6. Using the Setup Utility program	43
Starting the Setup Utility program	43
Viewing or changing settings	43
Using passwords	43
Password considerations	44
Administrator password	44
User Password	44
Setting, changing, or deleting a password	44
Enabling or disabling a device	44
Selecting a startup device	45
Selecting a temporary startup device	45
Viewing or changing the startup device sequence	45
Advanced settings	46
Exiting the Setup Utility program	46
Chapter 7. Configuring RAID	47
Configuring RAID for machine types 4262, 4263, 4264, and 4265	47
Installing SATA hard disk drives	47
Configuring the system BIOS to enable SATA RAID functionality	47
Creating RAID volumes	48
Deleting RAID volumes	48
Configuring RAID for machine types 4266, 4269, 4271, and 4272	48
Installing SATA or SAS hard disk drives	49
Entering the Marvell BIOS Setup to configure SATA or SAS RAID	49
Configuring the Marvell BIOS Setup to enable SATA/SAS RAID 0, 1, or 5 functionality	49
Configuring the Marvell BIOS Setup to set an optional hot spare hard disk drive	50
Configuring the Marvell BIOS Setup to delete an optional hot spare hard disk drive	50
Configuring the Marvell BIOS Setup to delete an array	50
Chapter 8. Symptom-to-FRU Index	51
Hard disk drive boot error	51
Power Supply Problems	51
Diagnostic error codes	52
Beep symptoms	69
POST error codes	70
Miscellaneous error messages	71
Undetermined problems	73
Chapter 9. Replacing FRUs	75
Locations	75
Locating controls and connectors on the front of your computer	75
Locating connectors on the rear of your computer	76
Locating components	76
Locating parts and connectors on the system board	77
Removing the computer cover	80
Removing and reinstalling the front bezel	81
Removing and reinstalling the PCI card holder	82
Installing or replacing a memory module	84
Installing or replacing a PCI card	88
Installing a new hard disk drive	90
Replacing a hard disk drive	93
Replacing the optical drive	94
Replacing the heat sink and fan assembly	96
Replacing the microprocessor	99
Replacing the system board	101
Replacing the battery	104
Replacing the power supply assembly	105
Replacing the front fan assembly	110
Replacing the rear fan assembly	112
Replacing the internal speaker	114
Completing the parts replacement	116
Chapter 10. FRU lists	119
Overall: MT 4262, 4263, 4264, 4265, 4266, 4269, 4271, and 4272	119
Mechanical FRUs	147
Keyboard and Mouse	154
Adapters and miscellaneous FRUs	190
Power Cords	198
Recovery discs	207
Windows XP Professional Recovery CD	207
Windows XP Professional 64 Mono Recovery CD	213
Windows Vista Business 32 Recovery CD	213
Windows Vista Business 64 Recovery CD	220
Windows 7 Professional 64 (SP1) Recovery CD	227
Windows Ultimate 64 (SP1) Recovery CD	234
Chapter 11. Additional service information	235
Security features	235
Hardware-controlled passwords	235
Operating system password	235
Vital product data	235
BIOS levels	235
Updating (flashing) the BIOS	235
Updating (flashing) the BIOS from a disc	235
Updating (flashing) the BIOS from your operating system	236
Recovering from a POST/BIOS update failure	236
Power management	237
Automatic configuration and power interface (ACPI) BIOS	237
Automatic Power-On features	237
System memory speed	237
Appendix A. Notices	241
Television output notice	242
European conformance CE mark	242
Trademarks	242

Match case Limit results 1 per page

To replace the rear fan assembly, do the following:

1. Remove all media from the drives and turn off all attached devices and the computer. Then, disconnect

all power cords from electrical outlets and disconnect all cables that are connected to the computer.

2. Remove the computer cover. See “Removing the computer cover” on page 74.

3. Remove the front bezel. See “Removing and reinstalling the front bezel” on page 75.

4. Remove the PCI card holder for easier access to the rear fan assembly. See “Removing and reinstalling

the PCI card holder” on page 76.

5. Your computer supports two rear fan assemblies. Locate the rear fan assembly you want to replace.

See “Locating components” on page 70.

6. Disconnect the rear fan assembly cable from the appropriate rear fan connector on the system board.

See “Locating parts and connectors on the system board” on page 71.

7. The rear fan assembly is attached to the chassis by four rubber mounts. Remove the rear fan assembly

by breaking or cutting the rubber mounts and gently pulling the rear fan assembly out of the chassis.

Figure 37. Removing the rear fan assembly

8. Install the new rear fan assembly by aligning the new rubber mounts with the corresponding holes in the

chassis and push the rubber mounts through the holes.

Note:

The new rear fan assembly you received will have four new rubber mounts attached.

9. Pull on the tips of the rubber mounts until the rear fan assembly is secured in place.

Chapter 9

Replacing FRUs

107