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MT 2632 manual IBM Mobile Systems ThinkPad Computer Hardware Maintenance Manual
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MT 2632
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Specs
Install
Before replacing parts
Parts list
Error messages
FRU replacement notices
Warranty
Maintenance
Symptom-to-FRU index
Diagnostics
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IBM Mobile Systems
ThinkPad Computer
Hardware Maintenance Manual
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Contents
IBM Mobile Systems ThinkPad Computer Hardware Maintenance Manual
Second Edition December
Introduction
Contents
General descriptions
ThinkPad A21e
1060 Ultrabay 2000 device
Before replacing parts
Important service information
Introduction
Strategy for replacing FRUs
Diskette compatibility matrix
How to use error messages
Strategy for replacing a hard-disk drive
Safety notice
Safety notices multilingual translations
continued
Safety notice
Continuation of Safety notice
6 ThinkPad A21e
Safety notice
continued Introduction
Safety notice
8 ThinkPad A21e
Continuation of Safety notice
Safety notice
Safety notice
Safety notice
10 ThinkPad A21e
Safety notice
General safety
Safety information
Electrical safety
Safety inspection guide
Handling electrostatic discharge-sensitive devices
Laser compliance statement
Grounding requirements
Do not open
18 ThinkPad A21e
v Use new nylon-coated screws when you replace FRUs
v Only certified trained personnel should service the computer
General descriptions
Read this first
The following are not covered under warranty
Service Web site
Related service information
Using Recovery CD
To create Service Partition SP
Power-on password
Passwords
Hard-disk password
Supervisor password
How to remove the hard-disk password
How to remove the power-on password
4. Select Power-On Password
Screen blank mode
Power management
Standby mode
Note for standby mode and hibernation mode
Note for Windows NT
Hibernation mode
v The system is powered off
Checkout guide
Testing the computer
Checkout guide
Interactive Tests
Diagnostics
Detecting system information with PC-Doctor
Power system checkout
Hardware Info
Utility
Checking operational charging
Checking the ac adapter
3. for Lithium ion battery
Checking the battery pack
for Nickel metal hydride battery
4. for Lithium ion battery
for Nickel metal hydride battery
Checking the backup battery
ThinkPad A21e
12.1-in. SVGA TFT
Product overview
Specifications
v “Specifications” v “Status indicators” on page
This section presents the following product-unique information
Status indicators
ThinkPad A21e
and the standby indicator is off
The following table shows the test for each FRU
FRU Tests
continued
38 ThinkPad A21e
Applicable test
The Fn key works independently from the operating system
Fn key combinations
40 ThinkPad A21e
Numeric error codes
Symptom-to-FRU index
Symptom-to-FRU index
42 ThinkPad A21e
continued
ThinkPad A21e
44 ThinkPad A21e
Error messages
No beep symptoms
Beep symptoms
ThinkPad A21e
Intermittent problems
LCD-related symptoms
FRU replacement notices
Undetermined problems
Screw notices
v Plastic to plastic
Retaining serial numbers
v Logic card to plastic
v Torque driver
Retaining the UUID
Restoring the serial number of the system unit
3. Select 2. Read S/N data from EEPROM
Removing and replacing a FRU
1010 Battery pack
v Battery pack
1020 DIMM
Note Loosen the screw
but do not remove it
v Battery pack
1030 Mini PCI adapter
Note Loosen the screw
but do not remove it
Note The illustration shows the combo card. Connector
v DIMM
1040 Backup battery
Do not drop or apply any shock to the hard-disk
1050 Hard-disk drive
ThinkPad A21e
When installing Make sure that the HDD connector is firmly connected
Removing and replacing a FRU
Note When you release the switch in step
1060 Ultrabay 2000 device
the lever
pops out. Pull the lever a little in step
ThinkPad A21e
continued
Removing and replacing a FRU
M2.5 × 15 mm, nylon-coated
1070 Keyboard
39.2 Ncm
4 kgfcm
ThinkPad A21e
continued
Removing and replacing a FRU
When installing When installing the keyboard, do as follows
v Battery pack v Hard-disk drive v Ultrabay 2000 device v Keyboard
1080 Keyboard CRU insulator
ThinkPad A21e
v Battery pack v Hard-disk drive v Ultrabay 2000 device v Keyboard
1090 Hinge cover
v Keyboard CRU insulator
64 ThinkPad A21e
v Battery pack v Hard-disk drive v Ultrabay 2000 device v Keyboard
1100 Keyboard bezel and speaker
v Keyboard CRU insulator v Hinge cover
continued
Step
66 ThinkPad A21e
Screw quantity
Torque
v Battery pack v Hard-disk drive v Ultrabay 2000 device v Keyboard
1110 Speaker cable
When installing Make sure that you fasten the connector firmly
v Keyboard CRU insulator v Hinge cover v Keyboard bezel and speaker
Special, nylon-coated
1120 Sub card
Step
ThinkPad A21e
Screw quantity
Torque
M2.0 × 9.5 mm, nylon-coated
1130 PC Card slot assembly
24.5 Ncm
2.5 kgfcm
v Battery pack v Hard-disk drive v Ultrabay 2000 device v Keyboard
1140 Fan assembly
v Keyboard CRU insulator v Hinge cover v Keyboard bezel and speaker
ThinkPad A21e
72 ThinkPad A21e
part of the fan as shown in the following figure
Removing and replacing a FRU
1150 Diskette drive
v Battery pack v Hard-disk drive v Ultrabay 2000 device v Keyboard
1160 Upper shield
v Speaker cable v Sub card v PC Card slot assembly v Fan assembly
v Keyboard CRU insulator v Hinge cover v Keyboard bezel and speaker
v DIMM
1170 System board
Step
76 ThinkPad A21e
Screw quantity
Torque
v Battery pack v Hard-disk drive v Ultrabay 2000 device v Keyboard
2010 LCD assembly
v Keyboard CRU insulator v Hinge cover
v Keyboard bezel and speaker1100
Step
78 ThinkPad A21e
Screw quantity
Torque
v Battery pack v Hard-disk drive v Ultrabay 2000 device v Keyboard
2020 Front bezel
v LCD assembly
v Keyboard CRU insulator v Hinge cover v Keyboard bezel and speaker
Removing and replacing a FRU
80 ThinkPad A21e
12.1-in. panel
2030 Inverter card
82 ThinkPad A21e
14.1-in. and 15.0-in. panels
12.1-in. panel
2040 LCD panel
84 ThinkPad A21e
continued
Removing and replacing a FRU
continued
14.1-in. and 15.0-in. panels
ThinkPad A21e
Removing and replacing a FRU
86 ThinkPad A21e
Locations
Locations Front view
Security keyhole Parallel connector Modem connector Network connector
Rear view
Serial connector External-monitor connector
Universal serial bus USB connector External-input-device connector
Battery pack Battery pack latches Mini PCI card slot
Bottom view
Docking connector DIMM slot Stereo headphone jack Stereo line-in jack
Diskette drive Microphone jack Hard-disk drive LCD latches
90 ThinkPad A21e
Parts list
continued
The parts marked with asterisk are CRU customer replacable unit
ThinkPad A21e
92 ThinkPad A21e
12.1-in. SVGA TFT
LCD FRU
14.1-in. XGA TFT
15.0-in. XGA TFT
94 ThinkPad A21e
15.0-in. XGA TFT LG
ThinkPad A21e
Keyboard
continued
Miscellaneous parts
96 ThinkPad A21e
ThinkPad A21e
98 ThinkPad A21e
Optional FRUs
Power cords system
Common parts list
Tools
For 2-pin power cords
Trademarks
Notices
Notices
ThinkPad A21e
1P P/N 06P8883
Part Number 06P8883 Printed in U.S.A