Overview - Toshiba Satellite L640 Maintenance Manual

Chapter 4 Replacement Procedures
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4.1 Overview

This chapter describes the procedure for removing and replacing the field replaceable units
(FRUs) in the PC. It may not be necessary to remove all the FRUs in order to replace one.
The chart below provides a guide as to which other FRUs must be removed before a
particular FRU can be removed. The numbers in the chart indicate the relevant section
numbers in this manual.
In all cases when removing an FRU, the battery pack must also be removed. When repairing
an FRU that is the potential cause of a computer fault, use the chart to determine the order in
which FRUs need to be removed.
The tilt stand, if it is installed, can be removed without any other FRUs removed.
4.18
Optical 4.22
Disc Drive SIM
Board
and ODD
Bezel
 Chart Notation
The chart shows the case for the
following example:
 Removing a LCD unit
All FRUs down to the "4.2 Battery
pack"to"4.5 Keyboard" and "4.9 Top
Cover Assembly" and "4.8 Display
Assembly" above LCD unit must be
removed.
Satellite L640/L645, Satellite Pro L640/Pro L645 Maintenance Manual (960-Q08)
4.10 4.17
Touch Speaker
pad Box
4.6
4.20 Wireless 4.13 CPU Heat
Modem LAN
Card
4.16 Application
for Thermal pad
and grease on
CPU, North
Bridge, V-ram,
Chock and VGA
4.2 Battery Pack
4.3 HDD/SSD
4.4 Memory Module
4.5 Key board
4.9 TOP Cover Assembly
4.12 Mother Board
4.7 3G
Module
Sink
Card
4.8
4.19 BT 4.11 I/O
Display
Module Board
Assembly
4.14 LCD
Unit
4.15 WEB
Camera
Module
4.21
Power
Board