IBM 2388 Hardware Maintenance Manual - Page 3

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Contents About this manual 1 Introduction 3 Important service information 3 Strategy for replacing FRUs 3 How to use error messages 4 Diskette compatibility matrix 4 Safety notices: multilingual translations 4 Safety information 16 General safety 16 Electrical safety 17 Safety inspection guide 19 Handling devices that are sensitive to electrostatic discharge 20 Grounding requirements 21 Laser compliance statement 21 General descriptions 25 Read this first 25 What to do first 25 Related service information 28 Service Web site 28 Restoring the preloaded system 28 Passwords 30 Power management 33 Checkout guide 35 Testing the computer 35 Detecting system information with PC-Doctor. . . 37 Power system checkout 38 ThinkPad G40, G41 43 Product overview 45 Specifications 45 Status indicators 47 FRU tests 49 Fn key combinations 51 Symptom-to-FRU index 52 Numeric error codes 52 Error messages 56 Beep symptoms 58 No-beep symptoms 58 LCD-related symptoms 59 Intermittent problems 60 Undetermined problems 60 FRU replacement notices 61 Screw notices 61 Retaining serial numbers 62 Removing and replacing a FRU 65 1010 Battery pack 66 1020 Hard disk drive 67 © Lenovo 2005. Portions © IBM Corp. 2005. iii

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Contents
About
this
manual
.
.
.
.
.
.
.
.
.
.
.1
Introduction
.
.
.
.
.
.
.
.
.
.
.
.
.3
Important
service
information
.
.
.
.
.
.
.
.
.3
Strategy
for
replacing
FRUs
.
.
.
.
.
.
.
.3
How
to
use
error
messages
.
.
.
.
.
.
.
.4
Diskette
compatibility
matrix
.
.
.
.
.
.
.
.
.4
Safety
notices:
multilingual
translations
.
.
.
.
.
.4
Safety
information
.
.
.
.
.
.
.
.
.
.
.
. 16
General
safety
.
.
.
.
.
.
.
.
.
.
.
. 16
Electrical
safety
.
.
.
.
.
.
.
.
.
.
. 17
Safety
inspection
guide
.
.
.
.
.
.
.
.
. 19
Handling
devices
that
are
sensitive
to
electrostatic
discharge
.
.
.
.
.
.
.
.
.
.
.
. 20
Grounding
requirements
.
.
.
.
.
.
.
.
. 21
Laser
compliance
statement
.
.
.
.
.
.
.
.
. 21
General
descriptions
.
.
.
.
.
.
.
.
.
. 25
Read
this
first
.
.
.
.
.
.
.
.
.
.
.
.
. 25
What
to
do
first
.
.
.
.
.
.
.
.
.
.
. 25
Related
service
information
.
.
.
.
.
.
.
.
. 28
Service
Web
site
.
.
.
.
.
.
.
.
.
.
. 28
Restoring
the
preloaded
system
.
.
.
.
.
. 28
Passwords
.
.
.
.
.
.
.
.
.
.
.
.
. 30
Power
management
.
.
.
.
.
.
.
.
.
. 33
Checkout
guide
.
.
.
.
.
.
.
.
.
.
.
. 35
Testing
the
computer
.
.
.
.
.
.
.
.
.
. 35
Detecting
system
information
with
PC-Doctor
.
.
. 37
Power
system
checkout
.
.
.
.
.
.
.
.
. 38
ThinkPad
G40,
G41
.
.
.
.
.
.
.
.
.
.
. 43
Product
overview
.
.
.
.
.
.
.
.
.
.
.
. 45
Specifications
.
.
.
.
.
.
.
.
.
.
.
. 45
Status
indicators
.
.
.
.
.
.
.
.
.
.
. 47
FRU
tests
.
.
.
.
.
.
.
.
.
.
.
.
. 49
Fn
key
combinations
.
.
.
.
.
.
.
.
.
. 51
Symptom-to-FRU
index
.
.
.
.
.
.
.
.
.
. 52
Numeric
error
codes
.
.
.
.
.
.
.
.
.
. 52
Error
messages
.
.
.
.
.
.
.
.
.
.
. 56
Beep
symptoms
.
.
.
.
.
.
.
.
.
.
. 58
No-beep
symptoms
.
.
.
.
.
.
.
.
.
. 58
LCD-related
symptoms
.
.
.
.
.
.
.
.
. 59
Intermittent
problems
.
.
.
.
.
.
.
.
.
. 60
Undetermined
problems
.
.
.
.
.
.
.
.
. 60
FRU
replacement
notices
.
.
.
.
.
.
.
.
. 61
Screw
notices
.
.
.
.
.
.
.
.
.
.
.
. 61
Retaining
serial
numbers
.
.
.
.
.
.
.
.
. 62
Removing
and
replacing
a
FRU
.
.
.
.
.
.
.
. 65
1010
Battery
pack
.
.
.
.
.
.
.
.
.
.
. 66
1020
Hard
disk
drive
.
.
.
.
.
.
.
.
.
. 67
©
Lenovo
2005.
Portions
©
IBM
Corp.
2005.
iii