Modem Troubleshooting - Toshiba QOSMIO E10 Maintenance Manual

2 Troubleshooting Procedures

2.10 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 sound board which is connected to the system board. If the modem
malfunctions, these connections or boards may be bad or the MDC might be faulty.
Disassemble the computer following the steps described in Chapter 4 and perform the
following checks:
Check 1 Make sure the following connections are firmly connected.
MDC cable
RJ11
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 sound board may be faulty. Replace it with a new one following the
instructions in Chapter 4. If the modem function is still not working properly,
perform Check 5.
2-50
＜SD board＞
MDC
PJ3000
2.10 Modem Troubleshooting
＜System board＞
CN9510
CN9500
QOSMIO E10 Maintenance Manual (960-492)