dynabook SATELLITE C50-H, Maintenance Manual

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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 Headphone 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 2.13 Microphone Port
2.13 Microphone Port
To determine if the computer’s Microphone Port is functioning properly or malfunctions,
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
Microphone Port Connector is mounted on System Board. Connect external Microphone
with Microphone Jack
interface to the computer’s Microphone Port, then power on the
computer into Windows. The computer will automatically detect this Microphone device
through Microphone Port. Execute Function Programs in Windows, if the Microphone
device appears to have a certain problem, go to Procedure 2. If an error is not located,
Microphone Port is functioning properly.
Procedure 2 Connector Check and Replacement Check
If Microphone Port on System Board malfunctions, there may be a bad connection between
Microphone 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 Microphone device cable has been firmly connected to Microphone Port of System
Board. Also make sure Microphone Port on System Board is free of foreign matters.