EPSON EPL-N3000/AcuLaser M4000N Revision C
Troubleshooting Troubleshooting When There is Error Display 93
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3.2.29 Paper Size Error/Duplex 3.2.30 No Recognition of Option Duplex
Table 3-32. Troubleshooting for Paper Size Error/Duplex
Step Action and Question Yes No
Parts below can be the source of this error (Chapter 4 Disassembly and Assembly)
• HVPS/MCU (p.301)
• GUIDE TRAY LEFT (p.236)
• PWBA FEEDER 550 (p.310)
1
Paper Size
♦Does the specification for the paper size permit
duplex printing?
Go to Step 2
Replace
the paper
2
Paper size setting
1. Check to see if the paper size setting by the GUIDE
END of the Paper Cassette agrees with the actual
paper size.
♦Does the paper size setting of each tray agree with
the actual paper size?
Go to Step 3
Correct
paper size
setting
3
Paper feed tray (1)
1. Check the paper feed tray when the error occurs.
♦Is Tray 1 the paper feed tray when the error occurs?
Replace the
HVPS/MCU
Go to Step
4
4
Paper feed tray (2)
1. Check the paper feed tray when the error occurs.
♦Is Tray 2 the paper feed tray when the error occurs?
Replace the
HVPS/MCU
Go to Step
5
5
Paper feed tray (3)
1. Check the paper feed tray when the error occurs.
♦Is Tray 3 the paper feed tray when the error occurs?
Go to PWBA
FEEDER550
(p. 130/p. 130)
Go to Step
6
6
Paper feed tray (4)
1. Check the paper feed tray when the error occurs.
♦Is Tray 4 the paper feed tray when the error occurs?
Go to PWBA
FEEDER550
(p. 130/p. 130)
Replace
the HVPS/
MCU
Table 3-33. Troubleshooting for “No Recognition of Option Duplex”
Step Action and Question Yes No
Parts below can be the source of this error (Chapter 4 Disassembly and Assembly)
• PWBA DUPLEX (p.347)
• HVPS/MCU (p.301)
• HARNESS ASSY DUP (p.359)
• HARNESS ASSY LVPS
1
Option Duplex detection signal (1)
1. Remove the PWBA DUPLEX. (p.347)
2. Disconnect the HARNESS ASSY DUP.
3. Connect the Connector J2750 of the HARNESS
ASSY DUP to the Connector P2750 of the
HARNESS ASSY LVPS.
(Refer to “Connectors (p.406)”)
4. Check the voltage between P2750-5 ↔ J2750-6.
♦3.3 VDC between P2750-5 ↔ J2750-6?
Go to Step 4 Go to Step 2
2
Option Duplex detection signal (2)
1. Measure the voltage between the connectors
P/J27-4 ↔ P/J27-3 on the HVPS/MCU.
♦3.3 VDC between P/J27-4 ↔ P/J27-3?
Go to Step 3
Replace the
HVPS/MCU
3
Continuity of the HARNESS ASSY LVPS
1. Disconnect the HARNESS ASSY LVPS.
2. Check continuity between J27 ↔ J2750.
J27-4 ↔ J2750-5
J27-3 ↔ J2750-6
J27-2 ↔ J2750-7
J27-1 ↔ J2750-8
♦Is there continuity between J27 ↔ J2750?
Go to Step 4
Replace the
HARNESS
ASSY LVPS
4
Continuity of the HARNESS ASSY DUP
1. Disconnect the connector of the HARNESS ASSY
DUP.
2. Check continuity between J2750 ↔ J50.
J2750-3 ↔ J50-8
J2750-4 ↔ J50-7
J2750-5 ↔ J50-6
J2750-6 ↔ J50-5
♦Is there continuity between J2750 ↔ J50?
Replace the
PWBA
DUPLEX
Replace the
HARNESS
ASSY DUP
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