Toshiba satellite a20 series Benutzerhandbuch

4 Replacement 

Procedures 

This section explains how to disassemble the computer and replace Field Replaceable Units 
(FRUs). It may not be necessary to remove all the FRUs in order to replace one. The chart 
below is a guide to which FRUs need to be removed in order to remove others. Always start 
by removing the battery pack, next, optional items such as the optional PC card and optional 
SD card, then follow the line on the chart to determine which FRU you must remove next in 
order to repair the one you think is causing the computer to operate improperly. Refer to the 
example at the bottom of the page. 
 

How to See the Chart
Two examples of
referring to the chart are
shown below.

Board
First, 4.1 Bttery to 4.13
Bluetooth must be
removed.  Then remove
the Top Cover with
Display Assembly, 4.16
Touch Pad to 4.21 DC-IN
Jack to remove the
System Board.

4.2  Battery

4.3
PC

Card

4.4
SD

Card

4.7
Select
Bay

module

4.5

HDD
4.6

MDC

4.8

Cooling Fan

4.9
CPU

4.10  Keyboard

4.11

Memory

4.12

Wireless LAN

4.13

Bluetooth

4.14  Top Cover with Display Assembly

4.15
Touch

Pad

4.16

Front
Membrane

ASSY

4.17
USB

Board

4.18
Sound

Board

4.19
RTC

Battery

4.20

DC-IN

Jack

4.25

Touch
Pad

Switch

4.26  Display Mask

4.27  FL Inverter

4.28  LCD Module

4.29
Wireless LAN Antenna/Bluetooth

Antenna/Desplay Cover

4.21  System Board

4.22  Sub Fan

4.23  PC Card Slot

4.24  Speakers

4.2  Battery

4.3

PC

Card

4.4

SD

Card

4.7

Select

Bay

module

4.5

HDD

4.6

MDC

4.8  Cooling

Fan

4.9

CPU

4.10  Keyboard

4.11

Memory

4.12

Wireless

LAN

4.13

Bluetooth

4.14  Top Cover with Display Assembly

4.15

Touch

Pad

4.16

Front

Membrane

ASSY

4.17

USB

Board

4.18

Sound

Board

4.19

RTC

Battery

4.20

DC-IN

Jack

4.25

Touch

Pad

Switch

4.21  System Board

4.22  Sub Fan

4.23  PC Card Slot 4.24  Speakers

4.29

Wireless LAN Antenna/
Bluetooth Antenna

/Display Cover

4.28  LCD Module

4.27  FL Inverter

4.26  Display Mask