Toshiba Portege A600 Maintenance Manual page 97

2.10 Modem Troubleshooting
Check 2 Modem cable or MDC cable may be faulty. Replace it with a new one. If the
problem still occurs, perform Check 3.
Check 3 MDC may be faulty. Replace it with a new one following the steps in Chapter 4,
Replacement Procedure. If the problem still occurs, perform Check 4.
Check 4 MDC FPC may be faulty. Replace it with a new one following the instructions in
Chapter 4, Replacement Procedures. If the problem still occurs, perform Check 5.
Check 5 System board may be faulty. Replace it with a new one following the instructions
in Chapter 4, Replacement Procedures.
PORTEGE A600 Maintenance Manual (960-710)
2 Troubleshooting Procedures
[CONFIDENTIAL] 2-51