EPSON EPL-N3000/AcuLaser M4000N Revision C
Troubleshooting Troubleshooting When There is Error Display 90
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3.2.24 Option Duplex Cover Error 3.2.25 Option Duplex Error
Table 3-27. Troubleshooting for Option Duplex Cover Error
Step Action and Question Yes No
Parts below can be the source of this error (Chapter 4 Disassembly and Assembly)
•HSG LOWER DUP (p.344)
• COVER HSG DUP
• SWITCH DUPLEX (p.357)
• PWBA DUPLEX (p.347)
•HVPS/MCU (p.301)
•LVPS (p.287)
1
COVER HSG DUP
1. Open the COVER HSG DUP.
2. Check the rib of the HSG LOWER DUP for damage
to its part where it comes in contact with the
SWITCH DUPLEX.
♦Is the part of the HSG LOWER DUP which pushes
the SWITCH DUPLEX normal?
Go to 3.4.31
SWITCH
DUPLEX
(p.138)
Replace the
HSG LOWER
DUP (p.344)
Table 3-28. Troubleshooting for Option Duplex Error
Step Action and Question Yes No
Parts below can be the source of this error (Chapter 4 Disassembly and Assembly)
• PWBA DUPLEX (p.347)
• HARNESS ASSY DUP (p.359)
• HVPS/MCU (p.301)
1
Installing the Option Duplex
1. Remove the Option Duplex once and install it again.
2. Turn the power on again.
♦Does the error recur?
Go to 3.4.28
PWBA
DUPLEX
(p.136)
Problem
solved