2 Troubleshooting Procedures
Satellite L550/ProL550 Series Maintenance Manual
18
To determine if the computer’s keyboard is functioning properly, perform the following
procedures. Figure 2-5 outlines the process. Start with Procedure 1 and continue with the
other procedures as instructed.
Procedure 1: External keyboard check
Procedure 2: Diagnostic check
Procedure 3: Connector and replacement check
Procedure 1
External keyboard check
Connect a USB keyboard to one of the computer’s USB ports, and then boot the computer.
The computer automatically detects the external keyboard.
If the external keyboard works correctly, the internal keyboard or its connections may be
faulty. Go to Procedure 2.
If the external keyboard appears to have the same problem as the internal keyboard, the
system board may be having some problem. Replace it with a new one and following the
instructions in Chapter 4.
Procedure 2
Diagnostic check
Run the
test and Diagnostics
Program, which will automatically execute the Keyboard Test.
Refer to Chapter 3,
Tests and Diagnostics
for more information on how to run the program.
If an error is located, go to Procedure 3. If an error does not occur, the keyboard is
functioning ok.
Procedure 3
Connector and replacement check
The keyboard and/or system board may be disconnected or damaged. Disassemble the
computer following the steps described in Chapter 4,
Replacement Procedures
and perform
the following checks.
Check 1
Make sure the keyboard cable is firmly connected to the system board.
If the connection is loose, reconnect firmly and repeat Procedure 2. If there is still
an error, go to Check 2.
Check 2
The keyboard may be damaged. Replace it with a new one following the
instructions in Chapter 4.
If the problem still exists, perform Check 3.
Check 3
The system board may be damaged. Replace it with a new one following the
instructions in Chapter 4.
Содержание Satellite L550 series
Страница 1: ...Toshiba Personal Computer Satellite Maintenance Manual TOSHIBA CORPORATION ...
Страница 13: ...Chapter 1 Hardware Overview ...
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Страница 32: ...Chapter 2 Troubleshooting Procedures 2 ...
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Страница 100: ...3 Tests and Diagnostics Satellite L550 ProL550 Series Maintenance Manual Series T D 13 ...
Страница 121: ...3 Tests and Diagnostics Satellite L550 Satellite L555 Satellite L557 Satellite ProL550 Series T D 34 ...
Страница 122: ...Chapter 4 Replacement Procedures ...
Страница 192: ...B 2 Liverpool 10M 10MG Maintenance Manual B 2 System Board Bottom View Figure B 2 System Board Layout Bottom ...
Страница 223: ...SatelliteL550 ProL550 Series Maintenance Manual E 2 3 Thai TI Keyboard 4 Korean KO Keyboard ...
Страница 224: ...SatelliteL550 ProL550 Series Maintenance Manual E 3 5 United Kingdom UK Keyboard 6 US International UI Keyboard ...
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Страница 227: ...SatelliteL550 ProL550 Series Maintenance Manual E 6 10 Arabic ARE Keyboard 11 Czech CZ Keyboard ...
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Страница 232: ...SatelliteL550 ProL550 Series Maintenance Manual E 11 20 Spanish SP Keyboard 21 Turkish TR Keyboard ...
Страница 233: ...SatelliteL550 ProL550 Series Maintenance Manual E 12 22 Turkish F TR F Keyboard 23 Swedish SD Keyboard ...
Страница 234: ...SatelliteL550 ProL550 Series Maintenance Manual E 13 24 Belgian BE Keyboard 25 Yugoslavian YU Keyboard ...
Страница 235: ...SatelliteL550 ProL550 Series Maintenance Manual E 14 26 Norwegian NW Keyboard 27 Scandinavian ND Keyboard ...
Страница 237: ...SatelliteL550 ProL550 Series Maintenance Manual E 16 30 Japanese JP Keyboard ...