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2 Troubleshooting Procedures 2.11 Modem Troubleshooting
2.11 Modem Troubleshooting
To check if the modem is defective or malfunctioning, follow the troubleshooting procedures
below as instructed.
Procedure 1 Diagnostic Test Program Execution Check
Procedure 2 Connector Check and Replacement Check
Procedure 1 Diagnostic Test Program Execution Check
Execute the Modem Test in the Diagnostic Program. Refer to Chapter 3, Tests and
Diagnostics for more information on how to perform the test program.
If any error is detected, perform Procedure 2.
Procedure 2 Connector Check and Replacement Check
An MDC (Modem Daughter Card) is used as the modem for this computer. The MDC is
connected to the system board by connector. If the modem malfunctions, these connections
may be bad or the MDC or system board might be faulty.
Disassemble the computer following the steps described in Chapter 4 and perform the
following checks:
Check 1 Make sure the MDC has been firmly connected to the PJ3000 on the system board
and the modem jack cable has been firmly connected to the JP1 on the modem.
MDC
JP1 JP2
Modem Jack
PJ3000
System Board
If any connector is disconnected, connect it firmly and return to Procedure 1. If
there is still an error, perform Check 2.
Check 2 The Modem jack may be faulty. Replace it with a new one. If the modem function
is still not working properly, perform Check 3.
Check 3 The MDC may be faulty. Replace it with a new one following the steps in Chapter
4. If the modem function is still not working properly, perform Check 4.
Check 4 The system board may be faulty. Replace it with a new one following the
instructions in Chapter 4
2-52 Satellite A10/TECRA A1/Satellite Pro A10 Maintenance Manual (960-445)