Table of Contents
Advertisement
2 Troubleshooting
Procedure 2
Connector Check and Replacement Check
The Modem jack (RJ11) is mounted on the system board and MDC is connected to the system
board. If the modem malfunctions, the 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 is firmly connected to the CN3010 on the 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 cable may be faulty. Replace it with a new one. If the modem is not
still working properly, perform Check 3.
Check 3
The Modem jack may be faulty. Replace it with a new one following the steps in
Chapter 4. If the modem is not still working properly, perform Check 4.
Check 4
The MDC may be faulty. Replace it with a new one following the steps in Chapter
4. If the modem is not still working properly, perform Check 5.
Check 5
The MDC cable may be faulty. Replace it with a new one following the steps in
Chapter 4. If the modem is not still working properly, perform Check 6.
Check 6
The system board may be faulty. Replace it with a new one following the
instructions in Chapter 4.
2-46
[CONFIDENTIAL]
2.11 Modem Troubleshooting
Satellite R20/TECRA M7 Maintenance Manual (960-572)
Advertisement
Chapters
Table of Contents
Troubleshooting
