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Lenovo ThinkCentre M57 Hardware Maintenance Manual - Page 135

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Replacing a memory module This procedure describes how to remove and replace a memory module. 1. Remove the computer cover. See "Removing the cover" on page 117. Note: For this procedure, it helps to lay the computer on its side. 2. Locate the memory module connectors. See "System board connectors" on page 116. 3. Remove the memory module being replaced by opening the retaining clips as shown. 4. Position the new memory module over the memory connector. Make sure the notch 1 on the memory aligns correctly with the connector key 2 on the system board. Push the memory module straight down into the connector until the retaining clips close. 5. Go to "Completing the FRU replacement" on page 148. Chapter 9. Replacing FRUs - Tower Computers 129

Section	Page
Contents	5
Chapter 1. About this manual	7
Important Safety Information	7
Important information about replacing RoHS compliant FRUs	8
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	13
Safety notices (multi-lingual translations)	13
Chapter 3. General information	45
The ThinkVantage™ Productivity Center program	45
Additional information resources	45
Specifications	46
Types 6008, 6068, 6074, 9012, 9018, 9087, 9163, 9172, and 9193	47
Types 6010, 6069, 6075, 6081, 6086, 9013, 9019, 9088, 9160, 9164, 9174, 9194, 9304, 9323, 9326, 9978, and 9979	48
Chapter 4. General Checkout	49
Problem determination tips	49
Chapter 5. Diagnostics	51
PC-Doctor for Windows	51
PC-Doctor for Windows PE	51
Running diagnostics from the Rescue and Recovery workspace	51
PC-Doctor for DOS	52
Creating a diagnostic CD image	52
Creating diagnostic diskettes	52
Running diagnostics from the CD or diskettes	53
Navigating through the diagnostics programs	53
Running tests	53
Test results	54
Quick and Full erase - hard drive	54
Viewing the test log	55
Chapter 6. Using the Setup Utility	57
Starting the Setup Utility program	57
Viewing and changing settings	57
Using passwords	57
Password considerations	57
User Password	58
Administrator Password	58
Setting, changing, and deleting a password	58
Selecting a startup device	58
Selecting a temporary startup device	58
Selecting or changing the startup device sequence	59
Advanced settings	59
Exiting from the Setup Utility program	59
Chapter 7. Symptom-to-FRU Index	61
Hard disk drive boot error	61
Power Supply Problems	61
Diagnostic error codes	62
Beep symptoms	84
POST error codes	85
Miscellaneous error messages	87
Undetermined problems	88
Chapter 8. Replacing FRUs (Types 6008, 6068, 6074, 9012, 9018, 9087, 9163, 9172, and 9193)	91
Locations	92
Rear connectors	92
Computer components	93
System board connectors	94
Removing the cover	95
Accessing system board components and drives	96
Replacing a memory module	98
Replacing the CMOS battery	99
Replacing the power supply	100
Replacing the system board	102
Replacing the microprocessor	106
Replacing the hard disk drive	110
Replacing an optical drive	112
Replacing the diskette drive	113
Replacing the power switch/LED assembly	114
Replacing the front panel card	115
Replacing the system fan assembly	116
Replacing a PCI adapter	117
Completing the FRU replacement	118
Chapter 9. Replacing FRUs (Types 6010, 6069, 6075, 6081, 6086, 9013, 9019, 9088, 9160, 9164, 9174, 9194, 9304, 9323, 9326, 9978, and 9979)	119
Locations	120
Rear connectors	120
Computer components	121
System board connectors	122
Removing the cover	123
Removing and replacing the front bezel	124
Replacing the power supply	125
Replacing the system board	126
Replacing the microprocessor	131
Replacing a memory module	135
Replacing a PCI adapter	136
Replacing the primary hard disk drive	138
Replacing the secondary hard disk drive	141
Replacing an optical drive	145
Replacing the diskette drive	146
Replacing the rear fan assembly	147
Replacing the front fan assembly	149
Replacing the front audio/USB assembly	151
Replacing the power switch/LED assembly	152
Replacing the CMOS battery	153
Completing the FRU replacement	154
Chapter 10. FRU lists	155
Machine Type 6008	155
Machine Type 6010	166
Machine Type 6068	178
Machine Type 6069	188
Machine Type 6074	199
Machine Type 6075	210
Machine Type 6081	226
Machine Type 6086	237
Machine Type 9012	249
Machine Type 9013	258
Machine Type 9018	268
Machine Type 9019	278
Machine Type 9087	288
Machine Type 9088	298
Machine Type 9160	312
Machine Type 9163	323
Machine Type 9164	335
Machine Type 9172	345
Machine Type 9174	355
Machine Type 9193	366
Machine Type 9194	377
Machine Type 9304	387
Machine Type 9323	399
Machine Type 9326	410
Machine Type 9978	422
Machine Type 9979	434
Chapter 11. Additional Service Information	447
Security features	447
Hardware controlled Passwords	447
Operating system password	447
Vital product data	447
BIOS levels	447
Updating (flashing) BIOS from a CD-ROM or diskette	448
Recovering from a POST/BIOS update failure	448
Power management	449
Automatic configuration and power interface (ACPI) BIOS	449
Automatic Power-On features	449
Appendix. Notices	451
Television output notice	452

Match case Limit results 1 per page

Replacing

memory

module

This

procedure

describes

how

remove

and

replace

memory

module.

Remove

the

computer

cover.

See

“Removing

the

cover”

page

117.

Note:

For

this

procedure,

helps

lay

the

computer

its

side.

Locate

the

memory

module

connectors.

See

“System

board

connectors”

page

116.

Remove

the

memory

module

being

replaced

opening

the

retaining

clips

shown.

Position

the

new

memory

module

over

the

memory

connector.

Make

sure

the

notch

±1²

the

memory

aligns

correctly

with

the

connector

key

±2²

the

system

board.

Push

the

memory

module

straight

down

into

the

connector

until

the

retaining

clips

close.

“Completing

the

FRU

replacement”

page

148.

Chapter

Replacing

FRUs

Tower

Computers

129