Toshiba PORTEGE M300 Maintenance Manual page 97

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2 Troubleshooting Procedures

Modem cable may be faulty. Replace it with a new one. If the problem still

occurs, perform Check 3.

MDC may be faulty. Replace it with a new one following the steps in Chapter 4.

If the problem still occurs, perform Check 4.

MDC harness may be faulty. Replace it with a new one following the instructions

in Chapter 4. If the problem still occurs, perform Check 5.

System board may be faulty. Replace it with a new one following the instruction

in Chapter 4.

PORTEGE M300 Maintenance Manual (960-504)

2.11 Modem Troubleshooting

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