Epson AcuLaser C4000 Service Manual page 296

EPSON AcuLaser C4000/C4100/C3000
FIP-DC
Step
Initial setting
Do the following checks show a problem?
1
• Blown fuse inside LVPS (PL15.1.10)
• AC power supply problem
LVPS (PL15.1.10) check
1. Disconnect the LVPS connectors J163, J165 and J164.
2. Turn on the Harness Assy AC SW (PL15.1.11).
3. Measure the voltages between the following terminals.
2
P163-1 <=> P163-2 (24V DC)
P165-1 <=> P165-2 (5V DC)
P165-3 <=> P165-4 (3.3V DC)
Are the voltages normal between each terminal?
Harness Assy LVRPG (PL15.2.4) check
1. Turn off the Harness Assy AC SW (PL15.1.11), and then connect J164 to the LVPS
(PL15.1.10).
3
2. After connecting the connector, turn on the Harness Assy AC SW (PL15.1.11).
Is the voltage +3.3V DC between P/J164-1 <=> P/J164-2?
Harness Assy LVNC (PL15.2.1) check
1. Turn off the Harness Assy AC SW (PL15.1.11), and then connect J165 to the LVPS
4 (PL15.1.10).
2. After connecting the connector, turn on the Harness Assy AC SW.
Is the voltage +5V DC between P/J165-1 <=> P/J165-2?
Harness Assy 24V (PL15.2.6) check
1. Turn off the Harness Assy AC SW (PL15.1.11), and then connect J163 to the LVPS
(PL15.1.10).
5
2. After connecting the connector, turn on the Harness Assy AC SW.
Is the voltage +24V DC between P/J163-1 <=> P/J163-2?
Troubleshooting
Check
Level 2 FIP
Treatment
Yes
Repair. Go to step 2.
Replace the LVPS. (Refer to
Go to step 3.
Ch4-4.2.18.3)
Check for a Harness Assy
Go to step 4.
LVRPG (PL15.2.4) frame short.
Check for a Harness Assy
Go to step 5.
LVNC (PL15.2.1) frame short.
Check for a Harness Assy 24V
End of procedure
(PL15.2.6) frame short.
Revision F
No
3-280