dynabook SATELLITE C50-H, Руководство по обслуживанию

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And if the connector is disconnected, connect it firmly to the system board and return to
Procedure 1. If a foreign matter is found on USB Port of System Board, remove it and then return
to Procedure 1. If the problem persists, perform Check 2.
Check 2
System Board may be faulty. Replace it with a new one following the steps described in Chapter
4.
2 Troubleshooting 2.12 Headphone Port
2.12 Headphone Port
To determine if the computer’s Headphone Port is functioning properly or ma
lfunctions,
perform following procedures. Start with Procedure 1 and continue with the other
procedure as instruction below.
Procedure 1 Windows Application Test
Procedure 2 Connector Check and Replacement Check
Procedure 1 Windows Application Test
Headphone Port Connector is mounted on System Board. Connect external Headphone with
Headphone Jack interface to the computer’s Headphone Port, then power on the computer
into Windows. The computer will automatically detect this Headphone device through
Headphone Port. Execute Function Programs in Windows, if the Headphone device appears
to have a certain problem, go to Procedure 2. If an error is not located, Headphone Port is
functioning properly.
Procedure 2 Connector Check and Replacement Check
If Headphone Port on System Board malfunctions, there may be a bad connection between
Headphone device and System Board, or either of System Board might be faulty.
Disassemble the computer following the steps described in Chapter 4 and perform the
following checks:
Check 1
Make sure Headphone device cable has been firmly connected to Headphone Port of System
Board. Also make sure Headphone Port on System Board is free of foreign matters.