Toshiba TECRA A11 Series Maintenance Manual page 91

Troubleshooting Procedures
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 System board may be faulty. Replace it with a new one following the instructions
in Chapter 4, Replacement Procedures.
2-48 [CONFIDENTIAL] TECRA A11/S11/P11/Satellite Pro S500 Series Maintenance Manual (960-784)