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2 Troubleshooting Procedures
Procedure 2 Connector Check and Replacement Check
The Modem is installed as an MDC (Modem Daughter Card). If the modem malfunctions,
there may be a bad connection between the MDC and the main board. Or the MDC, main
board or their connectors might be damaged.
Disassemble the computer following the steps described in Chapter 4, Replacement
Procedures and perform the following checks:
Check 1 Make sure the MDC is firmly connected to CON6501 by MDC cable on the main
board and the connector of the MDC.
If a connector is disconnected, connect it firmly and repeat Procedure 1. If the
modem is still not functioning properly, perform Check 2.
Check 2 The MDC may be defective or damaged. Replace it with a new one following the
steps in Chapter 4, Replacement Procedures. If the modem is still not functioning
properly, perform Check 3.
Check 3 The modem jack or MDC cable may be defective or damaged. Replace it with a
new one following the steps in Chapter 4, Replacement Procedures. If the modem
is still not functioning properly, perform Check 4.
Check 4 The main board may be defective or damaged. Replace it with a new one
following the steps in Chapter 4, Replacement Procedures.
2-36 [CONFIDENTIAL] Satellite M500/M505/M507 Maintenance Manual