Epson EPL-N3000 - Sensor Face up Open; Sensor Full Stack

EPSON EPL-N3000/AcuLaser M4000N Revision C
Troubleshooting Troubleshooting for Individual Units 129
Confidential
3.4.19 SENSOR FACE UP OPEN 3.4.20 SENSOR FULL STACK
Table 3-78. Troubleshooting for SENSOR FACE UP OPEN
Step Action and Question Yes No
Parts below can be the source of this error (Chapter 4 Disassembly and Assembly)
• SENSOR FACE UP OPEN (p.267)
•GATE FU
• LEVER GATE FU
• HARNESS ASSY EXIT SNR
•HVPS/MCU (p.301)
1
GATE FU
1. Open the COVER ASSY REAR500.
♦When the LEVER GATE FU is moved up/down,
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?
Go to Step 2
Replace the
LEVER
GATE FU,
GATE FU
2
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.
J29-4 ↔ 291-3
J29-5 ↔ 291-2
J29-6 ↔ 291-1
♦ Is there normal continuity between J29 ↔ J291?
Go to Step 3
Replace the
HARNESS
ASSY ANT
3
SENSOR FACE UP OPEN
1. Replace the SENSOR FACE UP OPEN. (p.267)
♦Does the problem still occur?
Replace the
HVPS/MCU
Problem
solved
Table 3-79. Troubleshooting for SENSOR FULL STACK
Step Action and Question Yes No
Parts below can be the source of this error (Chapter 4 Disassembly and Assembly)
• SENSOR FULL STACK (p.268)
• ACTUATOR FULL STACK (p.269)
• HARNESS ASSY EXIT SNR
• HVPS/MCU (p.301)
1
ACTUATOR FULL STACK
1. Open the COVER ASSY REAR500.
♦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?
Go to Step 2
Replace the
ACTUATOR
FULL
STACK
2
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
J29-1 ↔ J290-3
J29-2 ↔ J290-2
J29-3 ↔ J290-1
♦ Is there normal continuity between J29 ↔ J290?
Go to Step 3
Replace the
HARNESS
ASSY SNR
3
SENSOR FACE UP OPEN
1. Replace the SENSOR FULL STACK. (p.268)
♦Does the problem still occur?
Replace the
HVPS/MCU
Problem
solved