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2.11 Modem Troubleshooting 2 Troubleshooting Procedures
Check 2 Modem 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.
If the problem still occurs, perform Check 4.
Check 4 SD board may be faulty. Replace it with a new one following the instructions in
Chapter 4. If the problem still occurs, perform Check 5.
Check 5 SD board flexible cable may be faulty between SD board and system board.
Replace it with a new one following the instructions in Chapter 4. If the problem
still occurs, perform Check 6.
Check 6 System board may be faulty. Replace it with a new one following the instruction
in Chapter 4.
2-56 [CONFIDENTIAL] QOSMIO G20 Maintenance Manual (960-511)