Epson EPL-N3000 - Switch Duplex

EPSON EPL-N3000/AcuLaser M4000N Revision C
Troubleshooting Troubleshooting for Individual Units 138
Confidential
3.4.31 SWITCH DUPLEX
Table 3-90. Troubleshooting for SWITCH DUPLEX
Step Action and Question Yes No
Parts below can be the source of this error (Chapter 4 Disassembly and Assembly)
• SWITCH DUPLEX (p.357)
• HARNESS ASSY DUP COVER
• COVER HARNESS, HARNESS ASSY DUP (p.359)
• PWBA DUPLEX (p.347)
• HARNESS ASSY LVPS
•HVPS/MCU (p.301)
•LVPS (p.287)
1
SWITCH DUPLEX (1)
1. Remove the SWITCH DUPLEX.
2. While pressing and releasing the lever of the
SWITCH DUPLEX, check continuity between
J520-2 ↔ J520-1.
(Refer to “Connectors (p.406)”)
♦Is there continuity between J520-2 ↔ J520-1 when
the SWITCH DUPLEX is pushed, and discontinuity
when it is released?
Go to Step 2
Replace the
SWITCH
DUPLEX
2
HARNESS ASSY DUP COVER
1. Remove the HARNESS ASSY DUP COVER.
2. Check continuity between J52 ↔ J520.
♦Is there continuity between J52 ↔ J520?
Go to Step 3
Replace the
HARNESS
ASSY DUP
COVER
3
HARNESS ASSY DUP
1. Disconnect the HARNESS ASSY DUP.
2. Check continuity between J50 ↔ J2750.
♦Is there continuity between J50 ↔ J2750?
Go to Step 4
Replace the
HARNESS
ASSY DUP
4
HARNESS ASSY LVPS
1. Disconnect the HARNESS ASSY LVPS.
2. Check continuity between J27 ↔ J2750.
♦Is there continuity between J27 ↔ J2750?
Go to Step 5
Replace the
HARNESS
ASSY LVPS
5
SWITCH DUPLEX (2)
1. Remove the Imaging Cartridge.
2. Check the voltage between P/J27-4 ↔ P/J27-3 on
the HVPS/MCU.
♦Is the voltage 3.3 VDC between P/J27-4 ↔ P/J27-3?
Go to 3.4.28
PWBA
DUPLEX
(p.136)
Go to Step 6
6
HVPS/MCU
1. Disconnect P/J27 from the HVPS/MCU.
♦Is there normal continuity between P27-4 ↔ P11-
16?
Replace the
HVPS/MCU
Go to 3.4.1
LVPS (p.111)
Table 3-90. Troubleshooting for SWITCH DUPLEX
Step Action and Question Yes No