JRC JMR-92 Series Field Service Manual page 859

7.3 Troubleshooting
When this equipment does not operate correctly, check the following points before asking for
repairs.
Consult with your nearest subsidiary company, branch office, or sales office if the problem does
not get solved even after checking and correcting these points, or if there are any abnormally
locations other than the following items.
Symptom
The power is not
supplied.
Alternatively, the
equipment does not
start even if the Power
button of the operation
unit is pressed.
The power is not
supplied to the monitor.
Although the power is
supplied to the monitor,
the screen is not
displayed.
The brightness of the
monitor cannot be
adjusted.
The trackball or the
option keyboard cannot
be operated.
Chapter 7 Troubleshooting
Cause
The AC or DC power supply is not
connected.
The circuit breaker at the front of
the PSU (NBD-913) is not set to
ON.
The AC or DC power supply is not
input within the specified voltage
range.
The internal wiring is faulty.
The PSU (NBD-913) is faulty.
The CCU (NDC-1590) is faulty.
The CCU (NCE-5605) is faulty.
The display unit is not activated.
The internal wiring is faulty.
The MNU (NWZ-208/NWZ-207/
NWZ-214) is faulty.
The brightness of the monitor is set
to the minimum level.
The internal wiring is faulty.
The MNU (NWZ-208/NWZ-207/
NWZ-214) is faulty.
The MNU (NWZ-208/NWZ-207/
NWZ-214) is faulty.
The internal wiring is faulty.
The display unit
(NCE-5605/NCE5625) is faulty.
7-36
Action
Connect the AC or DC power supply.
Set the breaker to ON by pushing up
the lever of the breaker.
Connect the AC or DC power supply
within the specified voltage range.
Make a request to the distributor for
repair.
Make a request to the distributor for
repair.
Make a request to the distributor for
repair.
Make a request to the distributor for
repair.
Activate the display unit.
Make a request to the distributor for
repair.
Make a request to the distributor for
repair.
Adjust the brightness of the monitor
to the appropriate level.
Make a request to the distributor for
repair.
Make a request to the distributor for
repair.
Make a request to the distributor for
repair.
Make a request to the distributor for
repair.
Make a request to the distributor for
repair.