Sensor Regi - Epson EPL-N3000 Service Manual

EPSON EPL-N3000/AcuLaser M4000N

3.4.5 SENSOR REGI

Table 3-64. Troubleshooting for SENSOR REGI
Step Action and Question
Parts below can be the source of this error

• SENSOR REGI

(p.221)
• ACTUATOR B
• 150 FEEDER ASSY
(p.211)
• HARNESS ASSY CHUTE
• HARNESS ASSY TRAY1
• HVPS/MCU
(p.301)
• LVPS
(p.287)
ACTUATOR B
1. Remove the 150 FEEDER ASSY. (p.211)
2. From the paper inlet side in each of the area under
the 150 FEEDER ASSY and the area at the side of
it, push the ACTUATOR B with a mini screwdriver
1
or the like and check whether they operate smoothly.
3. Check the shape of the flag of the ACTUATOR B.
♦
Does the Actuator B operate smoothly, and does the
flag of the Actuator B have a proper shape to
intercept the light to the detecting point of the
sensor?
SENSOR REGI
1. With the 150FEEDER ASSY removed, connect the
connector J241 of the HARNESS ASSY TRAY1 to
the SENSOR REGI.
2. Remove the Imaging Cartridge.
2
3. Close the COVER OPEN.
4. While moving the Actuator Regi A with a mini
screwdriver or the like, measure the voltage between
P/J24-11 ↔ P/J24-10.
♦ 0 VDC between P/J24-11 ↔ P/J24-10 when the
ACTUATOR B is pressed and 3.3 VDC when it is
released?
Troubleshooting
Yes No
(Chapter 4 Disassembly and
Assembly)
Replace the
Go to Step 2 ACTUATOR
B
Replace the
Go to Step 3
HVPS/MCU
Troubleshooting for Individual Units
Table 3-64. Troubleshooting for SENSOR REGI (continued)
Step Action and Question
Power supply to the SENSOR REGI
1. Remove the Imaging Cartridge.
3
2. Check the voltage between P/J24-9 ↔ P/J24-10.
♦ 3.3 VDC between P/J24-9 ↔ P/J24-10?
Continuity of the HARNESS ASSY CHUTE
1. Disconnect the connector P/J24 on the HVPS/MCU.
2. Disconnect the P/J245.
3. Check continuity of the following wiring:
4
J24-9 ↔ J245-10
J24-10 ↔ J245-9
J24-11 ↔ J245-8
↔
♦
Does each wire between J24
continuity?
Continuity of the HARNESS ASSY TRAY1
1. Remove the SENSOR REGI. (p.221)
2. Disconnect P/J245 from the HVPS/MCU.
3. Check continuity between the following terminals:
5
P/J245-4 ↔ P/J241-3
P/J245-5 ↔ P/J241-2
P/J245-6 ↔ P/J241-1
Is there continuity in each wiring between P/J245 ↔
♦
P/J241?
Continuity of the HVPS/MCU
1. Disconnect P/J11 from the HVPS/MCU.
6
2. Check continuity between P/J11-16 ↔ P/J24-9.
♦ Is there continuity between P/J11-16 ↔ P/J24-9?
SENSOR REGI (2)
7
1. Replace the SENSOR REGI. (p.221)
♦
Does the problem still occur?
Revision C
Yes
Go to Step 4 Go to Step 6
Replace the
HARNESS
Go to Step 5
ASSY
CHUTE
J245 have
Replace the
Go to Step 7 HARNESS
ASSY TRAY1
Go to 3.4.1 Replace the
LVPS (p.111) HVPS/MCU
Replace the Problem
HVPS/MCU solved
Confidential
No
117