Toshiba Libretto 50CT/70CT Manual

4-ivLibretto 50CT/70CT Maintenance ManualFigure 4-13  Five screws removal.....................................................................................4-17
Figure 4-14  Display assembly removal.............................................................................4-18
Figure 4-15  RTC battery removal....................................................................................4-19
Figure 4-16  System board...

4 Replacement Procedures 4.1  OverviewLibretto 50CT/70CT Maintenance Manual4-14 
4.1 Overview
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, then follow the lines on the chart to determine which FRU you
must remove next in order to repair the one you...

4.1  Overview4  Replacement Procedures4-2Libretto 50CT/70CT Maintenance ManualSafety PrecautionsBefore you begin disassembly, read the following safety precautions and observe them
carefully as you work.
DANGER:1.Always use the lithium ion battery pack or backup battery that is authorized by Toshiba or compatible with the unit.  Since other batterypacks have different specifications, they may be incompatible with the unit, andmay burst or explode. Heating or disassembling the battery pack could...

4 Replacement Procedures 4.1  OverviewLibretto 50CT/70CT Maintenance Manual4-3Before You BeginLook over the procedures in this section before you begin disassembling the computer.
Familiarize yourself with the disassembly and reassembly steps. Begin each procedure by
removing the AC adapter and the battery pack as instructed in Section 4.2.
1. Do not disassemble the computer unless it is operating abnormally.
2. Use only the correct and approved tools.
3. Make sure the working environment is free from...

4.1  Overview4  Replacement Procedures4-4Libretto 50CT/70CT Maintenance ManualDisassembly ProceduresThere are three basic types of cable connectors.
q Pressure plate connector
q Normal pin connector
q Flexible Cable Connector
To disconnect a Pressure Plate connector, lift up the tabs on either side of the plastic pressure
plate and slide the cable out of the connector. To connect the cable to a Pressure Plate
connector, make sure the pressure plate is fully lifted and slide the cable into the connector....

4 Replacement Procedures 4.1  OverviewLibretto 50CT/70CT Maintenance Manual4-5Tools and Equipment
The use of Electrostatic Discharge (ESD) equipment is very important for your safety and the
safety of those around you. Proper use of these devices will increase the success rate of your
repairs and lower the cost for damaged or destroyed parts. The following equipment is
necessary to disassemble and reassemble the computer:
q One M2 Phillips screwdriver to remove and replace screws.
q Tweezers, to lift out...

4.2  Battery Pack4  Replacement Procedures4-6Libretto 50CT/70CT Maintenance Manual4.2 Battery PackRemoving the Battery Pack
To remove the battery pack, follow the steps below and refer to Figure 4-1.1. Turn the computer off.  Disconnect the AC adapter and other optional units from the
computer.
2. Turn the computer upside down.
3. Slide the battery release latch to the left to unlock it.
4. With the battery facing up, slide it out.Figure 4-1  Removing the battery pack
NOTE
:  For environmental reasons,...

4 Replacement Procedures 4.2  Battery PackLibretto 50CT/70CT Maintenance Manual4-7Installing the Battery Pack
To install the battery pack, follow the steps below and refer to Figure 4-1.WARNING:  The battery is a lithium ion battery.  The battery can explode if not properlyreplaced, used, handled, or disposed of.  Use only batteries recommended by Toshiba asreplacements.NOTE:  Check the battery terminals visually. If they are dirty, wipe them clean with a drycloth.1. Turn the computer off.  Disconnect...

4.3  Optional PC Card4  Replacement Procedures4-8Libretto 50CT/70CT Maintenance Manual4.3 Optional PC CardRemoving the Optional PC Card
To remove the optional PC card, be sure the computer is in boot mode.  Follow the steps
below and refer to Figure 4-2.1. Turn the computer off.
2. Slide the PC card release lever to the right.
3. The PC card comes out slightly.  Hold it securely and pull it out.Figure 4-2  Removing the PC Card
NOTE:  The unit may contain a dummy card which is inserted or removed in...

4 Replacement Procedures 4.3  Optional PC CardLibretto 50CT/70CT Maintenance Manual4-9Installing the Optional PC Card
To install the optional PC card, follow the steps below and refer to Figures 4-3 and 4-2.NOTE:  Before installing the PC card, be sure that the computer is in boot mode.1. Turn the computer off.
2. Insert the PC card.  Carefully push it into place.Figure 4-3  Installing the PC card
3. Visually check that, when the PC card is fully inserted, the PC card release lever is
positioned on the...