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Replacing the power switch/LED assembly

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6. Remove the two screws that secure the front panel connectors assembly to the chassis and then release the front panel connectors assembly from the chassis. 7. Align the screw holes in the new front panel connectors assembly with the holes in the chassis. Install the two screws to secure the assembly. 8. Reconnect all the cables to the system board. See "Locating parts on the system board " on page 113. 9. Reinstall the hard disk drive fan bracket if removed. 10. Reinstall the front bezel. 11. Go to "Completing the FRU replacement" on page 108. Replacing the power switch/LED assembly Attention Do not open your computer or attempt any repair before reading and understanding the "Important safety information" in the ThinkStation Safety and Warranty Guide that came with your computer. To obtain a copy of the ThinkStation Safety and Warranty Guide, go to: http://www.lenovo.com/support. This procedure describes how to remove and replace the power switch/LED assembly. 1. Remove the computer cover. See "Removing the cover" on page 110. 2. Remove the front bezel. See "Removing the front bezel" on page 114 3. Disconnect the power switch/LED assembly cable from the system board. See "Removing the front bezel" on page 114. 4. Note the power switch/LED assembly cable routing and the position of the two LEDs. 5. Remove the switch and the LEDs from the bezel. Chapter 11. Replacing FRUs (Type 4155, 4158, 4218) 135

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
Lenovo Welcome Center	37
Lenovo Solution Center	37
SimpleTap	37
Additional information resources	37
Specifications	37
Chapter 4. General Checkout	41
Problem determination tips	41
Chapter 5. Diagnostics	43
Lenovo ThinkVantage Tools	43
Lenovo Solution Center	43
PC-Doctor for Windows PE	44
Running diagnostics from the Rescue and Recovery workspace	44
PC-Doctor for DOS	44
Creating a diagnostic CD/DVD image	44
Running diagnostics from the disc	44
Running diagnostics from the Rescue and Recovery workspace	45
Navigating through the diagnostics programs	45
Running tests	45
Viewing the test log	47
Chapter 6. Using the Setup Utility	49
Starting the Setup Utility program	49
Viewing and changing settings	49
Using passwords	49
Password considerations	49
User Password	50
Administrator 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
Advanced settings	51
Exiting from the Setup Utility program	52
Chapter 7. Installing hard disk drives and configuring RAID (types 4105, 4157, 4217)	53
Installing SATA hard disk drives and configuring RAID	53
Installing SATA hard disk drives	53
Configuring the system BIOS to enable SATA RAID functionality	53
Creating RAID volumes	54
Deleting RAID volumes	54
Installing SAS hard disk drives and configuring RAID	54
Installing SAS hard disk drives	54
Entering the Marvell BIOS Setup to configure SAS RAID	55
Configuring the Marvell BIOS Setup to enable SAS RAID 0, 1, or 5 functionality	55
Configuring the Marvell BIOS Setup to set an optional hot spare hard disk drive	56
Configuring the Marvell BIOS Setup to delete an optional hot spare hard disk drive	56
Configuring the Marvell BIOS Setup to delete an array	56
Chapter 8. Installing hard disk drives and configuring RAID (types: 4155, 4158, 4218)	57
Installing SATA or SAS hard disk drives and configuring RAID	57
Installing SATA or SAS hard disk drives	57
Entering the Marvell BIOS Setup to configure SATA or SAS RAID	57
Configuring the Marvell BIOS Setup to enable SATA or SAS RAID 0, 1, 5, or 10 functionality	58
Configuring the Marvell BIOS Setup to set an optional hot spare hard disk drive	58
Configuring the Marvell BIOS Setup to delete an optional hot spare hard disk drive	58
Configuring the Marvell BIOS Setup to delete an array	58
Chapter 9. Symptom-to-FRU Index	61
Hard disk drive boot error	61
Power Supply Problems	61
Diagnostic error codes	62
Beep symptoms	79
POST error codes	80
Miscellaneous error messages	81
Undetermined problems	83
Chapter 10. Replacing FRUs (Type 4105, 4157, 4217)	85
Locating controls and connectors on the front of your computer	85
Rear connectors	85
Removing the cover	86
Locations	87
Locating parts on the system board	89
Removing the front bezel	90
Replacing the power supply	90
Replacing a memory module	92
Replacing a PCI adapter card	94
Replacing the heat sink	98
Replacing the microprocessor	100
Replacing the system board	102
Replacing a hard disk drive	105
Replacing the hard disk drive fan assembly	108
Replacing an optical drive	109
Replacing the diskette drive or card reader	110
Replacing the front and rear fan assemblies	112
Replacing the front panel connectors assembly	113
Replacing the power switch/LED assembly	114
Replacing the battery	114
Replacing the internal speaker	115
Completing the FRU replacement	116
Chapter 11. Replacing FRUs (Type 4155, 4158, 4218)	117
Locating controls and connectors on the front of your computer	117
Rear connectors	117
Removing the cover	118
Locations	119
Locating parts on the system board	121
Removing the front bezel	122
Replacing the power supply	122
Installing or replacing a memory module	124
Replacing a PCI adapter card	126
Replacing the heat sink	129
Replacing the microprocessor	130
Replacing the system board	132
Replacing a hard disk drive	135
Replacing the hard disk drive fan assembly	138
Replacing an optical drive	139
Replacing the diskette drive or card reader	140
Replacing the front and rear fan assemblies	141
Replacing the front panel connectors assembly	142
Replacing the power switch/LED assembly	143
Replacing the battery	144
Replacing the internal speaker	145
Completing the FRU replacement	146
Chapter 12. FRU lists	147
Overall: MT 4105, 4157 and 4217	147
Mechanical FRUs	161
Keyboard and Mouse	164
Adapters and miscellaneous FRUs	183
Power Cords	186
Recovery discs	190
Windows XP Professional 64 Mono Recovery CD	190
Windows Vista Business 32 Recovery CD	191
Windows Vista Business 64 Recovery CD	194
Windows 7 Professional 64 SP1 Recovery CD	198
Windows 7 Ultimate 64 SP1 Recovery CD	202
Overall: MT 4155, 4158, and 4218	202
Mechanical FRUs	218
Keyboard and Mouse	220
Adapters and miscellaneous FRUs	238
Power Cords	242
Recovery discs	246
Windows XP Professional 64 Mono Recovery CD	246
Windows Vista Business 32 Recovery CD	247
Windows Vista Business 64 Recovery CD	250
Windows 7 Professional 64 SP1 Recovery CD	254
Windows 7 Ultimate 64 SP1 Recovery CD	257
Chapter 13. Additional Service Information	259
Security features	259
Hardware controlled Passwords	259
Operating system password	259
Vital product data	259
BIOS levels	259
Flash update procedures	259
Updating (flashing) BIOS from a disc	260
Updating (flashing) BIOS from the operating system	260
Recovering from a POST/BIOS update failure	260
Power management	261
Automatic configuration and power interface (ACPI) BIOS	261
Automatic Power-On features	261
Appendix A. Notices	263
Television output notice	264
Trademarks	264
Appendix B. System memory speed	265

Match case Limit results 1 per page

6. Remove the two screws that secure the front panel connectors assembly to the chassis and then release

the front panel connectors assembly from the chassis.

7. Align the screw holes in the new front panel connectors assembly with the holes in the chassis. Install

the two screws to secure the assembly.

8. Reconnect all the cables to the system board. See “Locating parts on the system board ” on page 113.

9. Reinstall the hard disk drive fan bracket if removed.

10. Reinstall the front bezel.

11. Go to “Completing the FRU replacement” on page 108.

Replacing the power switch/LED assembly

Attention

Do not open your computer or attempt any repair before reading and understanding the “Important safety information”

in the

ThinkStation Safety and Warranty Guide

that came with your computer. To obtain a copy of the

ThinkStation

Safety and Warranty Guide

, go to:

http://www.lenovo.com/support.

This procedure describes how to remove and replace the power switch/LED assembly.

1. Remove the computer cover. See “Removing the cover” on page 110.

2. Remove the front bezel. See “Removing the front bezel” on page 114

3. Disconnect the power switch/LED assembly cable from the system board. See “Removing the front

bezel” on page 114.

4. Note the power switch/LED assembly cable routing and the position of the two LEDs.

5. Remove the switch and the LEDs from the bezel.

Chapter 11

Replacing FRUs (Type 4155, 4158, 4218)

135