YQE8-J0092E
23
Check
Item
Probable Cause
Corrective Action
A
AC Power Cord connection
Verify that power cord is properly connected to the power
plug. Also make sure that power cord is properly connected
to the inlet plug on the device side.
B
DC Output from DC Power Supply is
defective.
Use digital voltmeter or tester to verify that each DC
Output value is correct.
If the DC Output value is not correct, turn off the power
and disconnect TB-2 and TB-3 connectors from DC Power
Supply and verify the DC Output value again (refer to
Section 3.1 of this document).
Replace DC Power Supply
４
if the DC Output value is
abnormal.
If the DC output value is correct, turn the power off and
connect output connector. Measure resistance value
between each output terminal and GND. If resistance value
is low, look for the reason.
Reference
：
Resistance
＞
Output voltage
÷
Rated Current
C
Power line connection is defective.
Verify that power line (AC inlet-TB1-Power Switch) inside
the device is properly connected. If it is abnormal, repairing
at manufacturer is required.
D
Operation Panel connector is defective or
disconnected.
Verify that the cable between PCB HSS7-LCDSOSA-F
ASSY and PCB HSSV7-CONT-F ASSY (CN21-CN13) is
properly connected. If it is abnormal, repairing at
manufacturer is required.
E
Power Switch is defective.
Verify that Power Switch can operate. If it is abnormal,
repairing at manufacturer is required.
F
PCB HSS7-LCDSOSA-F ASSY is
defective.
Replace PCB HSS7-LCDSOSA-F ASSY
２
and if it
works, the original part is defective.
G
PCB HSSV7-CONT-F ASSY is defective.
Replace PCB HSSV7-CONT-F ASSY
１
and if it works,
the original part is defective.
H
PCB HSSV7-CONT-F ASSY is
defective.
(Fuse in HSSV7-CONT-F ASSY is
blown)
By using tester, verify that Fuse (F6) in PCB HSSV7-
CONT-F ASSY is blown or not.
If it was blown, then replace PCB HSSV7-CONT-F ASSY
１
.
