Sensor No Paper - Epson EPL-N3000 Service Manual

EPSON EPL-N3000/AcuLaser M4000N

3.4.23 SENSOR NO PAPER

Table 3-82. Troubleshooting for SENSOR NO PAPER
Step Action and Question
Parts below can be the source of this error
• SENSOR NO PAPER (p.222),
• ACTUATOR NO PAPER (p.223),
• HARNESS ASSY CLSNR1
• HARNESS ASSY CLSNR2
• 550 Paper Cassette
(p.191)
• OPTION 550 PAPER FEEDER
• PWBA FEEDER 550
(p.310)
• HVPS/MCU
(p.301)
ACTUATOR NO PAPER
1. Remove the OPTION 550 PAPER FEEDER.
(p.303)
2. Install the 550 Paper Cassette.
3. Check the operation of the ACTUATOR NO
1
PAPER by moving it with your hand.
♦
Does the ACTUATOR NO PAPER operate
smoothly in such a way that the flag enters the
sensing area of the sensor when there is paper and
the flag leaves the sensing area when there is no
paper?

SENSOR NO PAPER (1)

1. Install the Option 550 Paper Feeder.
2. Remove the Imaging Cartridge.
3. Close the COVER OPEN.
4. Remove the 550 Paper Cassette.
5. Insert your hand through the cassette inserting
2
opening, lift the ACTUATOR NO PAPER, and
measure the voltage between P/J85-7 ↔ P/J85-6 on
the PWBA FEEDER 550. (Refer to
(p.406)")
Is the voltage 0 VDC between P/J85-7 ↔ P/J85-6
♦
when the ACTUATOR NO PAPER is lifted and 3.3
VDC when the Actuator NO PAPER is released?
Troubleshooting
Yes
(Chapter 4 Disassembly and
Assembly)
(p.232)
(p.238)
(p.303)
Replace the
Go to Step 2 ACTUATOR
NO PAPER
(p.303)
Go to PWBA
FEEDER550 Go to Step 3
(p. 130/p. 130)
"Connectors
Troubleshooting for Individual Units
Table 3-82. Troubleshooting for SENSOR NO PAPER (continued)
Step Action and Question
Continuity of the HARNESS ASSY CLSNR1
No
1. Remove the HARNESS ASSY CLSNR1.
2. Check continuity between J855 ↔ J852.
J855-5 ↔ J852-3
3
J855-6 ↔ J852-2
J855-7 ↔ J852-1
Do all the wires between J855 ↔ J852 have
♦
continuity?
Continuity of the HARNESS ASSY CLSNR2
1. Disconnect the connector P/J85 on the PWBA
FEEDER550.
2. Check continuity between J85 ↔ J852.
4
J85-5 ↔ J855-3
J85-6 ↔ J855-2
J85-7 ↔ J855-1
♦ Do all the wires between J85 ↔ J855 have
continuity?
Continuity of the HVPS/MCU
1. Disconnect P/J11 and P/J20 on the HVPS/MCU.
5
2. Check continuity between P11-16 ↔ P20-5.
Is there continuity between P11-16 ↔ P20-5?
♦
SENSOR NO PAPER (2)
6
1. Replace the SENSOR NO PAPER. (p.320)
♦
After replacing, has the trouble been cleared?
Revision C
Yes No
Replace the
HARNESS
Go to Step 4
ASSY
CLSNR1
Replace the
HARNESS
Go to Step 5
ASSY
CLSNR2
Replace the
Go to Step 6
HVPS/MCU
Replace the
Problem solved
HVPS/MCU
131
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