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Lenovo ThinkCentre M70z Hardware Maintenance Manual (HMM) - Page 82

assemblies from the computer., that secure the right I/O assemblies, and then remove the right I/O

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This section provides instructions on how to replace the right I/O assemblies. To replace the right I/O assemblies, 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. Place a soft, clean towel or cloth on the desk or surface. Hold the sides of your computer and gently lay it down so that the screen is against the surface and the cover is facing up. 3. Remove the computer cover. See "Removing the computer cover" on page 71. 4. Locate the right I/O assemblies. See "FRU locations" on page 67. Note: The right I/O assemblies are located on both sides of the optical drive bay. See Figure 13 "Removing the right I/O assemblies " on page 76. 5. Disconnect all the right I/O assembly cables. 6. Remove the four screws ( 1 and 2 ) that secure the right I/O assemblies, and then remove the right I/O assemblies from the computer. Figure 13. Removing the right I/O assemblies 7. To install the new right I/O assemblies into the computer, position the new right I/O assemblies into place, and then align the screw holes with the corresponding holes in the computer main bracket. 8. Install the four screws ( 1 and 2 ) to secure the right I/O assemblies to the computer main bracket. 9. Connect all the removed right I/O assembly cables to the new right I/O assemblies. 76 ThinkCentre Hardware Maintenance Manual

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
Safety inspection guide	11
Handling electrostatic discharge-sensitive devices	11
Grounding requirements	12
Safety notices (multi-lingual translations)	12
Chapter 3. General information	35
Lenovo ThinkVantage Tools	35
Lenovo Welcome	35
Lenovo ThinkVantage Toolbox	35
Additional information resources	35
Specifications	35
Chapter 4. General Checkout	37
Problem determination tips	37
Chapter 5. Diagnostics	39
Lenovo ThinkVantage Toolbox	39
PC-Doctor for DOS	39
Creating a diagnostic disc	39
Running the diagnostic program from the diagnostic disc	40
Navigating through the diagnostics programs	40
Running tests	40
Viewing the test log	42
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
Power-on password	44
Hard disk drive password	44
Setting, changing, or deleting a password	44
Enabling or disabling a device	45
Selecting a startup device	45
Selecting a temporary startup device	45
Viewing or changing the startup device sequence	46
Exiting the Setup Utility program	46
Chapter 7. Symptom-to-FRU Index	47
Hard disk drive boot error	47
Power Supply Problems	47
Diagnostic error codes	48
Beep symptoms	65
POST error codes	65
Miscellaneous error conditions	66
Undetermined problems	68
Chapter 8. Replacing FRUs	69
Locating connectors, controls, and indicators on the front of your computer	70
Using your computer in monitor mode	71
Locating connectors and parts on the rear of your computer	72
FRU locations	73
System board parts and connectors	75
Removing or reinstalling the frame stand	76
Removing the computer cover	77
Replacing the hard disk drive	78
Replacing the optical drive	80
Replacing the right I/O assemblies	81
Replacing the card reader	83
Replacing the inverter	84
Replacing the power supply	85
Removing or reinstalling the wall mount	86
Replacing the system fan	88
Replacing the microprocessor fan assembly	90
Replacing the heat sink	91
Replacing the microprocessor	93
Replacing the PS2 COM Port	96
Installing or replacing a memory module	97
Replacing the battery	99
Replacing the WI-FI card	100
Replacing the Bluetooth module	101
Replacing the multi-touch board	102
Replacing the ambient light sensor	103
Replacing the internal speakers	105
Replacing the integrated camera with microphone	106
Replacing the rear I/O assembly	108
Replacing the power switch module	109
Replacing the front panel control board	111
Replacing the system board	112
Replacing the LCD panel	115
Completing the parts replacement	117
Chapter 9. FRU lists	119
Overall: MT 7570, 7577, 7578, 7580, 7583, 7584, 7589, 7594, 7595, 7597, and 7598	119
Mechanical FRUs	137
Keyboard and Mouse	143
Adapters and miscellaneous FRUs	175
Power Cords	176
Recovery discs	184
Windows 7 Home Basic 32 Recovery CD	184
Windows 7 Home Premium 32 Recovery CD	185
Windows 7 Professional 32 Recovery CD	187
Windows 7 Professional 64 Recovery CD	189
Windows XP Professional 32 Recovery CD	195
Windows 7 Starter 32 Recovery CD	195
Windows 7 Ultimate 32 Recovery CD	197
Chapter 10. Additional Service Information	199
Security features	199
Hardware controlled Passwords	199
Operating system password	199
Vital product data	199
BIOS levels	199
Flash update procedures	199
Updating (flashing) the BIOS from a disc	199
Updating (flashing) the BIOS from your operating system	200
Recovering from a POST/BIOS update failure	200
Power management	201
Automatic configuration and power interface (ACPI) BIOS	201
Automatic Power-On features	201
Appendix A. Notices	203
Television output notice	204
European conformance CE mark	204
Trademarks	204

Match case Limit results 1 per page

This section provides instructions on how to replace the right I/O assemblies.

To replace the right I/O assemblies, 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. Place a soft, clean towel or cloth on the desk or surface. Hold the sides of your computer and gently lay

it down so that the screen is against the surface and the cover is facing up.

3. Remove the computer cover. See “Removing the computer cover” on page 71.

4. Locate the right I/O assemblies. See “FRU locations” on page 67.

Note:

The right I/O assemblies are located on both sides of the optical drive bay. See Figure 13

“Removing the right I/O assemblies ” on page 76.

5. Disconnect all the right I/O assembly cables.

6. Remove the four screws (

and

) that secure the right I/O assemblies, and then remove the right I/O

assemblies from the computer.

Figure 13. Removing the right I/O assemblies

7. To install the new right I/O assemblies into the computer, position the new right I/O assemblies into

place, and then align the screw holes with the corresponding holes in the computer main bracket.

8. Install the four screws (

and

) to secure the right I/O assemblies to the computer main bracket.

9. Connect all the removed right I/O assembly cables to the new right I/O assemblies.

ThinkCentre Hardware Maintenance Manual