JRC JMR-92 Series Field Service Manual page 868

Symptom
The power is not
supplied to the scanner
unit.
The preheat count
down of the scanner
unit is not displayed.
Cause
The connection with the scanner
unit is abnormal.
The connection with the scanner
unit is abnormal and overcurrent
protection is functioning in the PSU.
DC power is not supplied to the
PSU.
(NKE-2254 or NKE-2103 is
connected as the scanner unit)
The DC24V output fuse is blown
out.
(NKE-2254 or NKE-2103 is
connected as the scanner unit.)
The RIF (CQD-2273) is faulty.
The internal wiring is faulty.
The PSU (NBD-913) is abnormal.
The CCU (NDC-1590) is faulty.
The connection with the scanner
unit is abnormal.
The safety switch of the scanner
unit is set to OFF.
A solid-state scanner unit is
connected.
The scanner unit is faulty.
The RIF (CQD-2273) is not set
correctly.
The RIF (CQD-2273) is faulty.
7-45
Action
Check the connection with the
scanner unit.
Check the connection with the
scanner unit and remove the cause
of short-circuit.
To connect the NKE-2254 or
NKE-2103 scanner unit, DC power
supply must be connected to the
PSU.
After removing the cause of fuse
blow-out, replace the fuse.
The fuse is the 15A blade fuse at the
front of the PSU (NBD-913).
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.
Check the connection with the
scanner unit.
Set the safety switch of the scanner
unit to ON.
[Note]
For operating the safety switch of the
scanner unit, always request the
work to the specialized service
person. Before starting the work, turn
off the power supply of the display
unit. Otherwise, an unexpected
accident may occur.
Preheat count-down is not displayed
for a solid-state scanner unit.
Make a request to the distributor for
repair.
Set the RIF correctly.
Make a request to the distributor for
repair.
Chapter 7 Troubleshooting