Sensor Low Paper - Epson EPL-N3000 Service Manual

EPSON EPL-N3000/AcuLaser M4000N

3.4.24 SENSOR LOW PAPER

Table 3-83. Troubleshooting for SENSOR LOW PAPER
Step Action and Question
Parts below can be the source of this error

• SENSOR LOW PAPER

(p.309)
• ACTUATOR LOW PAPER
• HARNESS LOW PAPER
• HARNESS ASSY FDR2
• OPTION 550 PAPER FEEDER
• 550 Paper Cassette
(p.191)
• PWBA FEEDER 550
(p.310)
• PLATE ASSY BTM
(p.330)
• HVPS/MCU
(p.301)
ACTUATOR LOW PAPER
1. Remove the OPTION 550 PAPER FEEDER.
(p.303)
2. Install the 550 Paper Cassette.
3. Check the operation of the ACTUATOR LOW
PAPER by pushing and releasing the PLATE ASSY
1
BTM with your hand.
♦
Does the ACTUATOR LOW PAPER operate
smoothly in such a way that the flag enters the
sensing area of the sensor when the PLATE ASSY
BTM is released (Actuator LOW PAPER is pushed
up) and the flag leaves the sensing area when the
PLATE ASSY BTM is pushed down?
Troubleshooting
Yes
(Chapter 4 Disassembly and
Assembly)
(p.303)
Replace the
ACTUATOR
Go to Step 2
LOW
PAPER
Troubleshooting for Individual Units
Table 3-83. Troubleshooting for SENSOR LOW PAPER
Step Action and Question
SENSOR LOW PAPER (2)
No
1. Install the Option 550 Paper Feeder.
2. Make certain that the Imaging Cartridge has been
removed.
3. Close the COVER OPEN.
4. Remove the 550 Paper Cassette.
2
5. Insert your hand through the cassette inserting
opening, lift the ACTUATOR NO PAPER, and
measure the voltage between P/J81-3 ↔ P/J81-2 on
the PWBA FEEDER 550. (Refer to
(p.406)")
Is the voltage 3.3 VDC between P/J81-3 ↔ P/J81-2
♦
when the ACTUATOR LOW PAPER is lifted and 0
VDC when the Actuator is released?
Continuity of the HARNESS LOW PAPER
1. Install the Option 550 Feeder.
2. Disconnect the connector of the SENSOR LOW
PAPER.
3
3. Disconnect the connector P/J81 on the PWBA
FEEDER 550.
4. Check continuity between J81 ↔ J810.
♦ Do all the wires between J81 ↔ J810 have
continuity?
Continuity of the HVPS/MCU
1. Disconnect P/J11 and P/J20 on the HVPS/MCU.
4
2. Check continuity between P11-16 ↔ P20-5.
Is there continuity between P11-16 ↔ P20-5?
♦
SENSOR LOW PAPER (3)
5
1. Replace the SENSOR LOW PAPER. (p.309)
♦
Does the problem still occur?
Revision C
Yes
(p.303)
Go to PWBA
FEEDER550 Go to Step 3
(p. 130/p. 130)
"Connectors
(p.303)
Replace the
HARNESS
Go to Step 4
LOW
PAPER
Replace the
Go to Step 5
HVPS/MCU
Replace the Problem
HVPS/MCU solved
Confidential
No
132