No Recognition Of Option Oct; Engine Communication Error - Epson EPL-N3000 Service Manual

EPSON EPL-N3000/AcuLaser M4000N

3.2.37 No Recognition of Option OCT

Table 3-40. Troubleshooting for "No Recognition of Option OCT"
Step Action and Question
Parts below can be the source of this error
• HVPS/MCU
(p.301)
• HARNESS ASSY OCT1
• PWBA OCT
(p.368)
• HARNESS ASSY OCT2
Option OCT detection signal (1)
1 1. Disconnect P/J 70 on the PWBA OCT.
Is the voltage between J70-5 ↔ P/J70-6 of the
♦
HARNESS ASSY OCT2 3.3 VDC?
Option OCT detection signal (2)
2
Is the voltage between P/J30-4 ↔ P/J30-3 on the
♦
HVPS/MCU 3.3 VDC?
Continuity of HARNESS ASSY OCT2
3
1. 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).
♦
After the PWBA OCT is replaced with a new one,
does the problem still occur?
Troubleshooting
Yes No
(Chapter 4 Disassembly and
Assembly)
Go to Step 4 Go to Step 2
Replace the
Go to Step 3
HVPS/MCU
Replace the
Go to Step 4 HARNESS
ASSY OCT2
Replace the
Go to Step 5 HARNESS
ASSY OCT1
Replace the Problem
HVPS/MCU solved
Troubleshooting When There is Error Display

3.2.38 Engine Communication Error

This error is in communication between the main control circuit and the engine control
circuit.
Table 3-41. Troubleshooting for "Engine Communication Error"
Step Action and Question
Parts below can be the source of this error
• HVPS/MCU
(p.301)
• BOARD ASSY., MAIN
(p.299)
HVPS/MCU
1
1. Replace the HVPS/MCU. (p.301)
♦
Dose the problem still occur?
Revision C
Yes No
(Chapter 4 Disassembly and
Assembly)
Replace the
Go to 3.4.17
BOARD
Electrical
ASSY.,
Noise (p.127)
MAIN.
98
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