Power Supply Trouble; Machine Is Not Energized At All (Pu1 Operation Check); Control Panel Indicators Do Not Light - Epson AcuLaser C9200N Service Manual

EPSON AcuLaser C9200N

3.4 Power supply trouble

3.4.1 Machine is not energized at all (PU1 operation
check)
Lift-up Sensor (PC7-PC)
Lift-up Motor (M3-PC)
Step Check Item
Is a power voltage supplied across
1
CN1PU1-1 and 2 on PU1?
2 Are the fuses on PU1 conducting?
Is DC3.3 V being output from
3
CN6PU1-1 on PU1?
Is "Low" being output from
4
CN7PU1-2 on PU1?
Is DC24 V being output from
5
CN5PU1-2 on PU1?
Is DC5 V being input to CN5PU1-3
6
on PU1?
Is DC5 V being input to CNPOW-2
7 on the Control Board? (LED on
PWB-M does not blink.)
Troubleshooting
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Relevant Electrical Parts
Control Board (PWB-Z-PC)
Location
(electrical Result
parts)
Check the WIRING
S to T-2 NO from the wall outlet to
S1 CN1PU1.
--- NO Change PU1.
R-4 NO Change PU1.
Check the WIRING
R-5 NO from the PWB-P to
PWB-M to CN7PU1.
R-6 NO Change PU1.
R-4 NO Change PU1.
NO Change PU1.
I-6
Change PWB-M.
YES
(p.198)
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3.4.2 Control panel indicators do not light

Controller Board (PWB-P)
Control Panel (PWB-OP)
Step
Action
Is a power voltage being applied
1
across CN1PU1-1 and 2 on PU1?
2 Is the fuse on PU1 conducting?
Is DC3.3 V being output from
(p.193)
3
CN6PU1-1 on PU1?
(p.193)
Is "Low" being output from
4
CN7PU1-2 on PU1?
Is DC5 V being output from
5
CN6PU1-2 on PU1?
(p.193)
Is J22P on PWB-P securely
6
connected?
(p.193)
(p.193)
Is CN1 on PWB-OP securely
7
connected?
Power supply trouble
Relevant Electrical Parts
DC Power Supply (PU1)
Location
Check Item (electrical
parts)
S to T-2
---
R-4
R-5
R-4
T-10
V to W-10
Revision D
Result Action
Check the WIRING
NO from the wall outlet to
S1 to CN1PU1.
NO Change PU1. (p.193)
NO Change PU1. (p.193)
Check the WIRING
NO from the PWB-P to
PWB-M to CN7PU1.
NO Change PU1. (p.193)
Reconnect.
Check the WIRING
NO
from the PWB-P to
PWB-M.
NO Reconnect.
Change PWB-OP.
(p.193)
YES
Change PWB-P. (p.198)
134
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