Pioneer PRV-LX1 Training Manual page 29

Condition
No RS422 control.>>>>
No RS232 control.
No LAN control.
Not locking on External
Sync input.
Utilizing Service Mode in conjunction with the monitor
output, front panel display and VGA output will
considerably shorten troubleshooting time.
(See Service mode & Log File sections)
Most all PC board assemblies in this device have LED
Status indicators that can be used to detect problems.
Check
Check operation setup.
Check JKDB and PCIB
connectors.
Run Loop Back Test in
service mode.
Check operation setup
(rear panel switch).
Check JKDB and
DECB connectors.
Notes:
(See LED Status section)
Counter Measure
Correct settings in
Function Menu.
Correct switch setting.
28.