Pwba Oct; Motor Assy Oct - Epson EPL-N3000 Service Manual

EPSON EPL-N3000/AcuLaser M4000N

3.4.32 PWBA OCT

Table 3-91. Troubleshooting for PWBA OCT
Step Action and Question
Parts below can be the source of this error

• PWBA OCT

(p.368)
• HARNESS ASSY OCT1
• HARNESS ASSY OCT2
• HVPS/MCU
(p.301)
• LVPS
(p.287)
Continuity of HARNESS ASSY OCT2
1. Disconnect the Option OCT.
1
2. Disconnect P/J 70 on the PWBA OCT
3. Disconnect the HARNESS ASSY OCT2.
♦ Is there normal continuity between J70 ↔ J3070?
Continuity of HARNESS ASSY OCT1
2
1. Disconnect the HARNESS ASSY OCT1.
♦ Is there normal continuity between J30 ↔ J3070?
PWBA OCT
3
1. Replace the PWBA OCT. (p.368)
♦
After replacement, does the problem still occur?
Troubleshooting
Yes No
(Chapter 4 Disassembly and
Assembly)
Replace the
Go to Step 2 HARNESS
ASSY OCT2
Replace the
Go to Step 3 HARNESS
ASSY OCT1
Problem Replace the
solved HVPS/MCU
Troubleshooting for Individual Units

3.4.33 MOTOR ASSY OCT

Table 3-92. Troubleshooting for MOTOR ASSY OCT
Step Action and Question
Parts below can be the source of this error

• MOTOR ASSY OCT

(p.378)
• PWBA OCT
(p.368)
• HARNESS ASSY OCT MOT
• HARNESS ASSY OCT2
• HVPS/MCU
(p.301)
• HARNESS ASSY OCT1
Continuity of HARNESS ASSY OCT MOT
1
1. Disconnect the HARNESS ASSY OCT MOT.
Is there normal continuity between J71 ↔ J710?
♦
MOTOR ASSY OCT
2
1. Replace the MOTOR ASSY OCT. (p.378)
♦
Is the trouble solved?
HARNESS ASSY OCT2
1. Disconnect P/J 70 on the PWBA OCT
3
2. Disconnect the HARNESS ASSY OCT2.
Is there normal continuity between J70 ↔ J3070?
♦
Continuity of HARNESS ASSY OCT1
4
1. Disconnect the HARNESS ASSY OCT1.
Is there normal continuity between J30 ↔ J3070?
♦
PWBA OCT
5
1. Replace the PWBA OCT. (p.368)
♦
Is the trouble solved?
Revision C
Yes No
(Chapter 4 Disassembly and
Assembly)
Replace the
HARNESS
Go to Step 2
ASSY OCT
MOT
PGo to 3.4.32
PWBA OCT Go to Step 3
(p.139)
Replace the
Go to Step 4 HARNESS
ASSY OCT2
Replace the
Go to Step 5 HARNESS
ASSY OCT1
Problem Replace the
solved HVPS/MCU
139
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