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Lenovo ThinkCentre M50 Hardware Maintenance Manual (HMM) - Page 36

Removing, cover, Types

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1 Power connector 2 Mouse connector 3 Keyboard connector 4 Serial connector 5 Parallel connector 6 VGA monitor connector 7 USB connectors 8 USB connectors 9 Ethernet connector 10 Microphone connector 11 Audio line out connector 12 Audio line in connector 13 AGP adapter connector 14 PCI adapter connectors Note: Some connectors on the rear of the computer are color-coded to help you to determine where to connect the cables on the computer. Removing the cover Important: Read"Safety information" on page 247 and"Handling electrostatic discharge-sensitive devices" on page 250 before removing the cover. Types 8185, 8186, 8192, 8413, and 8430 1. Shut down your operating system, remove any media (diskettes, CDs, or tapes) from the drives, and turn off all attached devices and the computer. 2. Unplug all power cords from electrical outlets. 3. Disconnect all cables attached to the computer. This includes power cords, input/output (I/O) cables, and any other cables that are connected to the computer. 4. Press the buttons on the sides of the computer and pivot the rear end of the cover up toward the front of the computer. 30 Hardware Maintenance Manual

Section	Page
Contents	5
Chapter 1. About this manual	7
Important Safety Information	7
Chapter 2. General information	9
Features	9
Physical specifications	11
Types 8185, 8186, 8192, 8413, and 8430	12
Types 8128, 8187, 8188, 8193, 8414, and 8431	13
Types 8189, 8190, 8194, 8195, 8415, 8432, and 8433	14
Types 8196 and 8197	15
Chapter 3. General Checkout	17
Chapter 4. IBM Enhanced Diagnostics	21
Diagnostics program download	21
Navigating through the diagnostics programs	21
Running diagnostics tests	21
Test selection	22
Test results	22
Fixed disk advanced test (FDAT)	22
Quick and Full erase - hard drive	24
Viewing the test log	24
Chapter 5. IBM Setup Utility program	25
Starting the IBM Setup Utility program	25
Viewing and changing settings	25
Exiting from the IBM Setup Utility program	26
Using passwords	26
User password	26
Administrator password	26
Setting, changing, and deleting a password	26
Using Security Profile by Device	27
Using IDE Drives Setup	27
Selecting a startup device	28
Selecting a temporary startup device	28
Changing the startup device sequence	28
Chapter 6. Replacing FRUs	29
Locating connectors on the front	29
Types 8185, 8186, 8192, 8413, and 8430	29
Types 8128, 8187, 8188, 8193, 8414, and 8431	29
Types 8189, 8190, 8194, 8195, 8415, 8432, and 8433	31
Types 8196 and 8197	31
Locating the connectors on the rear	33
Types 8185, 8186, 8192, 8413, and 8430	33
Types 8128, 8187, 8188, 8193, 8414, and 8431	33
Types 8189, 8190, 8194, 8195, 8415, 8432, and 8433	35
Types 8196 and 8197	35
Removing the cover	36
Types 8185, 8186, 8192, 8413, and 8430	36
Types 8128, 8187, 8188, 8193, 8414, and 8431	37
Types 8189, 8190, 8194, 8195, 8415, 8432, and 8433	37
Types 8196 and 8197	38
Locating components	40
Types 8185, 8186, 8192, 8413, and 8430	40
Types 8128, 8187, 8188, 8193, 8414, and 8431	41
Types 8189, 8190, 8194, 8195, 8415, 8432, and 8433	42
Types 8196 and 8197	43
Identifying parts on the system board (all machine types)	44
Replacing memory (all machine types)	44
Replacing adapters	45
Types 8185, 8186, 8192, 8413, and 8430	45
Types 8128, 8187, 8188, 8193, 8414, and 8431	47
Types 8189, 8190, 8194, 8195, 8415, 8432, and 8433	48
Types 8196 and 8197	48
Replacing internal drives	49
Types 8185, 8186, 8192, 8413, and 8430	49
Drive bay information	49
Removing a drive	50
Installing a drive	51
Types 8128, 8187, 8188, 8193, 8414, and 8431	51
Drive bay information	51
Removing a drive	52
Installing a drive	53
Types 8189, 8190, 8194, 8195, 8415, 8432, and 8433	54
Drive bay information	54
Removing the drive	54
Installing a drive	55
Types 8196 and 8197	57
Drive bay information	57
Removing a drive	57
Installing a drive	59
Connecting the drive	60
Parallel ATA hard disk drive	60
Serial ATA hard disk drive	61
CD drive, DVD drive, CD/RW drive, or DVD/CD/RW combo drive	61
Diskette drive	61
Replacing the battery (all machine types)	62
Replacing the power supply	63
Types 8185, 8186, 8192, 8413, and 8430	63
Types 8128, 8187, 8188, 8193, 8414, and 8431	63
Types 8189, 8190, 8194, 8195, 8196, 8197, 8415, 8432, and 8433	64
Replacing a microprocessor (all machine types)	65
Replacing the system board (all machine types)	67
Replacing the cover and connecting the cables	69
Types 8185, 8186, 8192, 8413, and 8430	69
Types 8128, 8187, 8188, 8193, 8414, and 8431	70
Types 8189, 8190, 8194, 8195, 8415, 8432, and 8433	71
Types 8196 and 8197	72
Chapter 7. Symptom-to-FRU Index	75
Hard disk drive boot error	75
Power Supply Errors	76
Diagnostic error codes	76
Beep symptoms	95
No-beep symptoms	97
POST error codes	98
Miscellaneous error messages	113
Undetermined problems	115
Power supply connectors	116
Connector P1	116
Connector P2, P3, P4, and P7	116
Connector P5 (Diskette drive)	116
Connector P6	116
Connector P8 (Serial ATA)	116
Chapter 8. Additional Service Information	117
Security features	117
Passwords	117
Power-on password	117
Removing a power-on password	117
Administrator password	117
Administrator password control	118
Operating system password	118
Vital product data	118
BIOS levels	118
Erasing a lost or forgotten password (clearing CMOS)	119
Flash update procedures	119
Updating (flashing) BIOS from a diskette or CD-ROM	119
Updating (flashing) BIOS from your operating system	119
Recovering from a POST/BIOS update failure	120
Power management	121
Automatic configuration and power interface (ACPI) BIOS	121
Advanced Power Management	121
Automatic Hardware Power Management features	121
Setting Automatic Hardware Power Management features	121
Automatic Power-On features	122
Product Recovery Program	123
Chapter 9. Parts listing	125
Type 8128	125
Type 8185	127
Type 8186	136
Type 8187	140
Type 8188	155
Type 8189	164
Type 8190	178
Type 8192	184
Type 8193	186
Type 8194	194
Type 8195	208
Type 8196	217
Type 8197	221
Type 8413	224
Type 8414	229
Type 8415	235
Type 8430	238
Type 8431	242
Type 8432	247
Type 8433	250
Chapter 10. Related service information	253
Safety information	253
General safety	253
Electrical safety	254
Safety inspection guide	255
Handling electrostatic discharge-sensitive devices	256
Grounding requirements	257
Safety notices (multi-lingual translations)	257
Send us your comments!	286
Problem determination tips	287
Notices	287

Match case Limit results 1 per page

±1²

Power

connector

±8²

USB

connectors

±2²

Mouse

connector

±9²

Ethernet

connector

±3²

Keyboard

connector

±10²

Microphone

connector

±4²

Serial

connector

±11²

Audio

line

out

connector

±5²

Parallel

connector

±12²

Audio

line

connector

±6²

VGA

monitor

connector

±13²

AGP

adapter

connector

±7²

USB

connectors

±14²

PCI

adapter

connectors

Note:

Some

connectors

the

rear

the

computer

are

color-coded

help

you

determine

where

connect

the

cables

the

computer.

Removing

the

cover

Important:

Read“Safety

information”

page

247

and“Handling

electrostatic

discharge-sensitive

devices”

page

250

before

removing

the

cover.

Types

8185,

8186,

8192,

8413,

and

8430

Shut

down

your

operating

system,

remove

any

media

(diskettes,

CDs,

tapes)

from

the

drives,

and

turn

off

all

attached

devices

and

the

computer.

Unplug

all

power

cords

from

electrical

outlets.

Disconnect

all

cables

attached

the

computer.

This

includes

power

cords,

input/output

(I/O)

cables,

and

any

other

cables

that

are

connected

the

computer.

Press

the

buttons

the

sides

the

computer

and

pivot

the

rear

end

the

cover

toward

the

front

the

computer.

Hardware

Maintenance

Manual