NEC DIRECTION SP B - SERVICE MANUAL 1998 Service Manual page 72

4-10 Maintenance and Troubleshooting
Problem
Communication
error
Table 4-2 Problems and Solutions
Symptom
No or bad data when
communicating.
Solution
4. Check the IDE cable. Replace as
necessary.
5. Check the power supply. Replace as
necessary.
6. Check the system board. Replace as
necessary.
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 the system board.