Epson EPL-N3000 - Sensor no Paper

EPSON EPL-N3000/AcuLaser M4000N Revision C
Troubleshooting Troubleshooting for Individual Units 131
Confidential
3.4.23 SENSOR NO PAPER
Table 3-82. Troubleshooting for SENSOR NO PAPER
Step Action and Question Yes No
Parts below can be the source of this error (Chapter 4 Disassembly and Assembly)
• SENSOR NO PAPER (p.222), (p.232)
• ACTUATOR NO PAPER (p.223), (p.238)
• HARNESS ASSY CLSNR1
• HARNESS ASSY CLSNR2
• 550 Paper Cassette (p.191)
• OPTION 550 PAPER FEEDER (p.303)
• PWBA FEEDER 550 (p.310)
•HVPS/MCU (p.301)
1
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
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?
Go to Step 2
Replace the
ACTUATOR
NO PAPER
2
SENSOR NO PAPER (1)
1. Install the Option 550 Paper Feeder. (p.303)
2. Remove the Imaging Cartridge.
3. Close the COVER OPEN.
4. Remove the 550 Paper Cassette.
5. Insert your hand through the cassette inserting
opening, lift the ACTUATOR NO PAPER, and
measure the voltage between P/J85-7 ↔ P/J85-6 on
the PWBA FEEDER 550. (Refer to
“Connectors
(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?
Go to PWBA
FEEDER550
(
p. 130/p. 130)
Go to Step 3
3
Continuity of the HARNESS ASSY CLSNR1
1. Remove the HARNESS ASSY CLSNR1.
2. Check continuity between J855 ↔ J852.
J855-5 ↔ J852-3
J855-6 ↔ J852-2
J855-7 ↔ J852-1
♦Do all the wires between J855 ↔ J852 have
continuity?
Go to Step 4
Replace the
HARNESS
ASSY
CLSNR1
4
Continuity of the HARNESS ASSY CLSNR2
1. Disconnect the connector P/J85 on the PWBA
FEEDER550.
2. Check continuity between J85 ↔ J852.
J85-5 ↔ J855-3
J85-6 ↔ J855-2
J85-7 ↔ J855-1
♦Do all the wires between J85 ↔ J855 have
continuity?
Go to Step 5
Replace the
HARNESS
ASSY
CLSNR2
5
Continuity of the HVPS/MCU
1. Disconnect P/J11 and P/J20 on the HVPS/MCU.
2. Check continuity between P11-16 ↔ P20-5.
♦Is there continuity between P11-16 ↔ P20-5?
Go to Step 6
Replace the
HVPS/MCU
6
SENSOR NO PAPER (2)
1. Replace the SENSOR NO PAPER. (p.320)
♦After replacing, has the trouble been cleared?
Problem solved
Replace the
HVPS/MCU
Table 3-82. Troubleshooting for SENSOR NO PAPER (continued)
Step Action and Question Yes No