Interlock S/W 24V - Epson EPL-N3000 Service Manual

EPSON EPL-N3000/AcuLaser M4000N
Table 3-65. Troubleshooting for SENSOR NO PAPER
Step Action and Question
Continuity of the HARNESS ASSY TRAY1,
HARNESS ASSY TRAY2
1. Remove the SENSOR NO PAPER.
(p. 222 / p. 232)
2. Disconnect the connector P/J24 on the HVPS/MCU.
(Refer to "Connectors (p.406)")
3. Check continuity between P/J245 ↔ P/J240 and
between P/J248 ↔ P/J246.
6
P/J245-1 ↔ P/J240-3
P/J245-2 ↔ P/J240-2
P/J245-3 ↔ P/J240-1
P/J248-1 ↔ P/J246-3
P/J248-2 ↔ P/J246-2
P/J248-3 ↔ P/J246-1
Does each wire between P/J245 ↔ P/J240 and
♦
between P/J248 ↔ P/J246 have continuity?
HVPS/MCU
1. Disconnect P/J11 on the HVPS/MCU.
7
Is there continuity between P/J11-16 ↔ P/J24-6,
♦
P/J11-16 ↔ P/J24-1 when the INTERLOCK S/W
24Vis pressed and discontinuity when it is released?
SENSOR NO PAPER (2)
8
1. Replace the SENSOR NO PAPER.
♦
Does the problem still occur?
Troubleshooting
Yes No
Replace the
HARNESS
Go to Step 7 ASSY TRAY1
or HARNESS
ASSY TRAY2
Go to 3.4.1 Replace the
LVPS (p.111) HVPS/MCU
Replace the Problem
(p. 222 / p. 232)
HVPS/MCU solved
Troubleshooting for Individual Units

3.4.7 INTERLOCK S/W 24V

Table 3-66. Troubleshooting for INTERLOCK S/W 24V
Step Action and Question
Parts below can be the source of this error

• INTERLOCK S/W 24V

(p.247)
• LVPS
(p.287)
• HVPS/MCU
(p.301)
INTERLOCK S/W 24V
1. Disconnect P/J45 on the LVPS.
2. While pressing and releasing the lever of the
INTERLOCK S/W 24V, check continuity between
1
P/J45-1 ↔ P/J45-3.
(Refer to "Connectors (p.406)")
♦ Is there continuity between P/J45-1 ↔ P/J45-3 when
the INTERLOCK S/W 24Vis pressed and
discontinuity when it is released?
Revision C
Yes No
(Chapter 4 Disassembly and
Assembly)
Replace the
Go to 3.4.1
INTERLOCK
LVPS (p.111)
S/W 24V
119
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