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4.1
General
This section explains how to disassemble the 610CT 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, then follow the lines on the chart to determine which FRU you
must remove next in order to repair the one you think is causing the 610CT to operate im-
properly.
Battery Pack
Optional Memory Card
Optional PCMCIA Card
Keyboard
Hard Disk Drive
Top Cover
RTC and Backup Battery
Accupoint Control Button Contact
Sound Board
Power Supply Board
System Board
Fan
Safety precautions
Before you begin disassembly, read the following safety precautions and observe them care-
fully as you work.
DANGER:
1. Always use the lithium ion battery pack or the back-up battery autho-
rized by Toshiba to be compatible with the unit. Since other battery packs
have different specifications, they may be incompatible with the unit and
may burst or explode.
Heating or disassembling the battery pack could cause leakage of alkaline
solution. Throwing the battery pack into a fire could cause the battery
pack to explode.
2. The power supply, FL inverter, and other components carry high
voltages. If you turn on the power of a partially disassembled computer to
check its operation, be very careful not to touch connectors or compo-
nents. This will reduce the risk of accidental electrical shock. Also, do not
disassemble individual components during first-level maintenance.
610CT
Display
Mask
LED Board
and Speaker
FL inverter Board
TFT Color Display
FL Unit
Microphone
4-1
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