Pwba Duplex; Motor Duplex - Epson EPL-N3000 Service Manual

EPSON EPL-N3000/AcuLaser M4000N

3.4.28 PWBA DUPLEX

Table 3-87. Troubleshooting for PWBA DUPLEX
Step Action and Question
Parts below can be the source of this error

• PWBA DUPLEX

(p.347)
• HVPS/MCU
(p.301)
• HARNESS ASSY LVPS
• HARNESS ASSY DUP
(p.359)
HARNESS ASSY DUP
1. Remove the Option Duplex.
2. Disconnect P/J50 on the PWBA DUPLEX.
1 (Refer to "Connectors (p.406)")
3. Check whether there is continuity between J2750 ↔
J50.
♦ Does each wire between J2750 ↔ J50 have
continuity?
HARNESS ASSY LVPS
1. Disconnect P/J27 on the HVPS/MCU.
2. Check whether there is continuity between J27 ↔
2
J2750.
Does each wire between J27 ↔ J2750 have
♦
continuity?
PWBA DUPLEX
3
1. Replace the PWBA DUPLEX. (p.347)
♦
After replacing, has the trouble been cleared?
Troubleshooting
Yes No
(Chapter 4 Disassembly and
Assembly)
Replace the
Go to Step 2 HARNESS
ASSY DUP
Replace the
Go to Step 3 HARNESS
ASSY LVPS
Problem Replace the
solved HVPS/MCU
Troubleshooting for Individual Units

3.4.29 MOTOR DUPLEX

Table 3-88. Troubleshooting for MOTOR DUPLEX
Step Action and Question
Parts below can be the source of this error

• MOTOR DUPLEX

(p.355)
• PWBA DUPLEX
(p.347)
• HVPS/MCU
(p.301)
• HARNESS ASSY LVPS
• COVER HARNESS, HARNESS ASSY DUP
• LVPS
(p.287)
HARNESS ASSY DUP
1. Remove the Option Duplex.
2. Disconnect P/J50 on the PWBA DUPLEX.
1
(Refer to "Connectors (p.406)")
3. Check continuity between J2750 ↔ J50.
(Refer to "Connectors (p.406)")
♦ Is there continuity between J2750 ↔ J50?
HARNESS ASSY LVPS
1. Disconnect P/J27 on the HVPS/MCU.
2
2. Check continuity between J27 ↔ J2750.
Is there continuity between J27 ↔ J2750?
♦
MOTOR DUPLEX
3
1. Replace the PWBA DUPLEX. (p.347)
♦
Has the trouble been cleared?
Power supply to the MOTOR DUPLEX
1. Measure the voltage between P/J27-8 ↔ P/J27-7 on
4
the HVPS/MCU.
24 VDC between P/J27-8 ↔ P/J27-7?
♦
Continuity of the HVPS/MCU
1. Disconnect P/J10 and P/J27 on the HVPS/MCU.
5
2. Check continuity between P10-1 ↔ P27-8.
Is there continuity between P10-1 ↔ P27-8?
♦
Revision C
Yes No
(Chapter 4 Disassembly and
Assembly)
(p.359)
Replace the
Go to Step 2 HARNESS
ASSY DUP
Replace the
Go to Step 3 HARNESS
ASSY LVPS
Problem
Go to Step 4
solved
Go to 3.4.28
PWBA
Go to Step 5
DUPLEX
(p.136)
Go to 3.4.1 Replace the
LVPS (p.111) HVPS/MCU
136
Confidential