NEC POWERMATE PROFESSIONAL - SERVICE MANUAL 05-1997 Service Manual page 148

4-16 Maintenance and Troubleshooting
Problem
Communication
Error
Table 4-4 Problems and Solutions
Symptom
Cannot access CD-ROM
reader.
No sound from CDs.
No data or corrupted data
when communicating.
Solution
1. Check signal/power connections
between reader, PCB, power supply.
2. Check master/slave settings.
3. Check power supply.
4. Check IDE cable. Replace as
necessary.
5. Replace system board.
1. Check that speaker power is on and
volume is adjusted.
2. Check audio software settings.
3. Check CD audio cable. Replace as
necessary.
4. Replace CD-ROM reader.
5. Replace system board.
1. Check cable connections between
system board and device.
2. Check that the interface port is
selected.
3. Test or replace the device and
interface cable (see the device
documentation for troubleshooting).
4. Replace system board.