Epson EPL-N3000 Service Manual page 106

EPSON EPL-N3000/AcuLaser M4000N
Table 3-53. Troubleshooting for "Power Does Not Turn ON" (continued)
Step Action and Question
PWBA FEEDER
1. Disconnect P/J20 from the HVPS/MCU.
11
2. Remove the Imaging Cartridge.
3. Turn on power.
♦
Does the Fan Main operate?
INTERLOCK S/W
1. Disconnect P/J44 and P/J45 from the LVPS.
2. While pushing and releasing the lever of the
Interlock S/W, check continuity between P/J44-1
12
↔ P/J44-3 and between P/J45-1 ↔ P/J45-3.
Is there continuity between P/J44-1 ↔ P/J44-3
♦
and between P/J45-1 ↔ P/J45-3 when the lever
of the Interlock S/W is pushed, and discontinuity
when lever is released?
SWITCH I/L ASSY
1. Disconnect the P/J411.
13
Is there continuity between P/J411-2 ↔ P/J411-1
♦
when the SWITCH I/L ASSY is pushed, and no
continuity when it is released?
CLUTCH ASSY PH
1. Disconnect P/J242 and P/J247 from the
HARNESS ASSY TRAY 1/2.
14
2. Make certain that the Imaging Cartridge has been
removed.
3. Turn on power.
♦
Does the Fan operate?
MAIN MOTOR
1. Disconnect P/J43 from the LVPS.
15
2. Remove the Imaging Cartridge.
3. Turn on power.
♦
Does the FAN MAIN operate?
Troubleshooting
Yes No
Replace the PWBA
Go to Step 12
FEEDER 550
Replace the
Go to Step 13 INTERLOCK
S/W
Replace the
Go to Step 14 SWITCH I/L
ASSY
Go to 3.4.14
CLUTCH ASSY Go to Step 15
PH (p.124)
Go to 3.4.2 MAIN
Go to Step 16
MOTOR (p.112)
Troubleshooting for Faulty Operation
Table 3-53. Troubleshooting for "Power Does Not Turn ON" (continued)
Step Action and Question
FAN MAIN
1. Replace the FAN MAIN. (p.293)
16
2. Remove the Imaging Cartridge.
3. Turn on power.
♦
Does the FAN MAIN operate?
FAN SUB
1. Replace the FAN SUB.
17
2. Remove the Imaging Cartridge.
3. Turn on power.
♦
Does the FAN SUB operate?
Revision C
Yes No
Problem solved Go to Step 17
Replace the
Problem solved
HVPS/MCU
106
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