Tv Tuner Troubleshooting - Toshiba QOSMIO F20 Maintenance Manual

2 Troubleshooting Procedures

2.15 TV Tuner Troubleshooting

To check if the TV tuner is defective or not, follow the troubleshooting procedures below as
instructed.
Procedure 1: Connector Check and Replacement Check
Procedure 1 Connector Check and Replacement Check
The TV antenna, TV tuner module, UA board or system board may be disconnected or faulty.
Disassemble the computer following the steps described in Chapter 4, Replacement
Procedures and perform the following checks:
Check 1 Make sure the following connector has been firmly connected.
If any connection is loose, reconnect it firmly. If there is still an error, perform
Check 2.
Check 2 The TV antenna coaxial cable may be faulty. Replace it with a new one. If the
problem still occurs, perform Check 3.
Check 3 The TV tuner module may be faulty. Replace it with a new one following the steps
in Chapter 4, Replacement Procedures. If the problem still occurs, perform Check
4.
Check 4 The UA board may be faulty. Replace it with a new one following the steps in
Chapter 4, Replacement Procedures. If the problem still occurs, perform Check 5.
Check 5 Cables in the computer (TV tuner harness and UA cable) may be faulty. Replace
them with new ones following the steps in Chapter 4, Replacement Procedures. If
the problem still occurs, perform Check 6.
Check 6 The system board may be faulty. Replace it with new one following the
instructions in Chapter 4, Replacement Procedures.
2-58 [CONFIDENTIAL]
2.15 TV Tuner Troubleshooting
QOSMIO F20 Maintenance Manual (960-526)