Epson Aculaser C9200N - Fusing Heaters Do Not Operate; Power Is Not Supplied to Option

EPSON AcuLaser C9200N Revision D
Troubleshooting Power supply trouble 135
Confidential
3.4.3 Fusing Heaters do not operate 3.4.4 Power is not supplied to option
 Optional Paper Cabinet Unit
 Duplex Unit
Relevant Electrical Parts
 Primary Interlock Switch (S2)
 Fusing Unit
 DC Power Supply (PU1)
Step Check Item
Location
(electrical
parts)
Result Action
1
Is the power source voltage applied
across CN2PU1-1 to 2 on PU1?
During this time, the Right Door
should be closed.
S to T-2 NO
Check wiring from
power outlet to S1 to
CN1PU1.
2
Is the power source voltage applied
across CN30-1 and 3, or across 2
and 3?
U-6
YES Fusing Unit
NO Change PU1. (p.193)
Step Check Item
Location
(electrical
parts)
Result Action
1
Is DC24 V being applied to hookup
connector CN44-2?
O-21 NO
Malfunction in Feeder
Unit
2
Is DC24 V being output from
CNCST-2 on PWB-M?
I-21 NO
Check wiring from
PWB-M to CN44 to
Feeder Unit.
3
Is DC24 V being output from
CN5PU1-2 on PU1?
---
YES Change PU1. (p.193)
NO
Malfunction in Feeder
Unit
Step Check Item
Location
(electrical
parts)
Result Action
1
Is DC24 V being output from
CN19-2 on Duplex?
O-19 NO
Malfunction in Duplex
Unit
2
Is DC24 V being output from
CNCOP-2 on PWB-M?
I-19 NO
Check wiring from
PWB-M to CN19 to
Duplex Unit.
3
Is DC24 V being output from
CNCOP-3 on PWB-M?
---
YES Change PU1. (p.193)
NO
Malfunction in Duplex
Unit