Epson EPL-N3000 - No Recognition of Option OCT; Engine Communication Error

EPSON EPL-N3000/AcuLaser M4000N Revision C
Troubleshooting Troubleshooting When There is Error Display 98
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3.2.37 No Recognition of Option OCT 3.2.38 Engine Communication Error
This error is in communication between the main control circuit and the engine control
circuit.
Table 3-40. Troubleshooting for “No Recognition of Option OCT”
Step Action and Question Yes No
Parts below can be the source of this error (Chapter 4 Disassembly and Assembly)
•HVPS/MCU (p.301)
• HARNESS ASSY OCT1
•PWBA OCT (p.368)
• HARNESS ASSY OCT2
1
Option OCT detection signal (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?
Go to Step 4 Go to Step 2
2
Option OCT detection signal (2)
♦Is the voltage between P/J30-4 ↔ P/J30-3 on the
HVPS/MCU 3.3 VDC?
Go to Step 3
Replace the
HVPS/MCU
3
Continuity of HARNESS ASSY OCT2
1. Disconnect the HARNESS ASSY OCT2.
♦Is there normal continuity between J70 ↔ J3070?
Go to Step 4
Replace the
HARNESS
ASSY OCT2
4
Continuity of HARNESS ASSY OCT1
1. Disconnect the HARNESS ASSY OCT1.
♦Is there normal continuity between J30 ↔ J3070?
Go to Step 5
Replace the
HARNESS
ASSY OCT1
5
PWBA OCT
1. Replace the PWBA OCT. (p.368).
♦After the PWBA OCT is replaced with a new one,
does the problem still occur?
Replace the
HVPS/MCU
Problem
solved
Table 3-41. Troubleshooting for “Engine Communication Error”
Step Action and Question Yes No
Parts below can be the source of this error (Chapter 4 Disassembly and Assembly)
• HVPS/MCU (p.301)
• BOARD ASSY., MAIN (p.299)
1
HVPS/MCU
1. Replace the HVPS/MCU. (p.301)
♦Dose the problem still occur?
Go to 3.4.17
Electrical
Noise (p.127)
Replace the
BOARD
ASSY.,
MAIN.