Sensor Face Up Open; Sensor Full Stack - Epson EPL-N3000 Service Manual

EPSON EPL-N3000/AcuLaser M4000N

3.4.19 SENSOR FACE UP OPEN

Table 3-78. Troubleshooting for SENSOR FACE UP OPEN
Step Action and Question
Parts below can be the source of this error

• SENSOR FACE UP OPEN

(p.267)
• GATE FU
• LEVER GATE FU
• HARNESS ASSY EXIT SNR
• HVPS/MCU
(p.301)
GATE FU
1. Open the COVER ASSY REAR500.
♦
When the LEVER GATE FU is moved up/down,
1
does the GATE FU operate smoothly? And, when
the LEVER GATE FU is raised, does the Actuator
Full Stack at the end of the GATE FU enter the slot
of the sensor, and when lowered, is it dislocated
from the slot?
HARNESS ASSY EXIT SNR
1. Remove the 500 EXIT ASSY. (p.262)
2. Remove the HARNESS ASSY EXIT SNR.
3. Check continuity between J29↔291.
2
J29-4 ↔ 291-3
J29-5 ↔ 291-2
J29-6 ↔ 291-1
Is there normal continuity between J29 ↔ J291?
♦
SENSOR FACE UP OPEN
3
1. Replace the SENSOR FACE UP OPEN. (p.267)
♦
Does the problem still occur?
Troubleshooting
Yes No
(Chapter 4 Disassembly and
Assembly)
Replace the
LEVER
Go to Step 2
GATE FU,
GATE FU
Replace the
Go to Step 3 HARNESS
ASSY ANT
Replace the Problem
HVPS/MCU solved
Troubleshooting for Individual Units

3.4.20 SENSOR FULL STACK

Table 3-79. Troubleshooting for SENSOR FULL STACK
Step Action and Question
Parts below can be the source of this error

• SENSOR FULL STACK

(p.268)
• ACTUATOR FULL STACK
• HARNESS ASSY EXIT SNR
• HVPS/MCU
(p.301)
ACTUATOR FULL STACK
1. Open the COVER ASSY REAR500.
♦
1 When the Actuator Full Stack is moved by hand,
does the Actuator Full Stack operate smoothly?
And, when paper is low, does the plug enter the slot
of the sensor, and when paper is full, is the plug
dislocated from the slot?
HARNESS ASSY EXIT SNR
1. Remove the 500 EXIT ASSY. (p.262)
2. Remove the HARNESS ASSY EXIT SNR.
3. Check the continuity between J29 ↔ H290
2
J29-1 ↔ J290-3
J29-2 ↔ J290-2
J29-3 ↔ J290-1
♦ Is there normal continuity between J29 ↔ J290?
SENSOR FACE UP OPEN
3
1. Replace the SENSOR FULL STACK. (p.268)
♦
Does the problem still occur?
Revision C
Yes
(Chapter 4 Disassembly and
Assembly)
(p.269)
Replace the
ACTUATOR
Go to Step 2
FULL
STACK
Replace the
Go to Step 3 HARNESS
ASSY SNR
Replace the Problem
HVPS/MCU solved
Confidential
No
129