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4.1 GENERAL
This section gives a detailed description of the procedures used
to replace FRUs (field replaceable units).
FRUs consist of the following:
1.
Top Cover Assembly
2.
Keyboard unit
3.
Memory Card
4.
RTC Battery
5.
Speaker
6.
Keyboard Bridge
7.
Indicator PCB
8.
Built-in Modem
9.
Power Supply PCB
10.
FDD (Floppy Disk Drive) Base
11.
FDD
12.
Hard Disk Control PCB
13.
Hard Disk Drive
14.
System PCB
15.
LCD Mask
16.
LCD Module
17.
LCD Cover
The following points must be kept in mind:
1.
The system should never be disassembled unless there is
a problem (abnormal operation, etc.).
2.
Only approved tools may be used.
3.
After deciding the purpose of replacing the unit, and
the procedures required,
do not carry out any other
procedures which are not absolutely necessary.
4.
Be sure to turn the POWER switch off before beginning.
S.
Be sure to disconnect the ac adapter and all external
cables from the system.
6.
Follow only the fixed, standard procedures.
7.
After
replacing a
unit,
confirm
that
the
system
is
operating normally.
8.
Even if the POWER switch is turned off, the system is
still
supplied
with
electric
current
by
the
sub
battery. During maintenance activity, you should take
enough care so that no short circuit will occur on the
system PCB.
Tools needed for unit replacement:
1.
Phillips Screwdriver
2.
Tweezers
4-1
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