Motor Assy Exit - Epson EPL-N3000 Service Manual

EPSON EPL-N3000/AcuLaser M4000N
Table 3-76. Troubleshooting for Electrical Noise (continued)
Step Action and Question
Grounding of circuit boards
1. Remove the following SHIEELD PLATE.
♦
SHIELD PLATE LVPS (p.285)
♦
SHIELD PLATE HVPS (p.296)
2. Check whether the following screws and nut for
grounding the circuit boards are tightened securely.
• All the screws for HVPS/MCU
• All the screws for LVPS
8
3. (When Option 550 Paper Feeder has been installed)
Check to see if the screws for the PWBA
FEEDER550 are tightened securely.
4. (When Option OCT has been installed)
Check to see if the screws for the PWBA OCT are
tightened securely.
5. (When Option Duplex has been installed)
Check to see if the screws for the PWBA DUPLEX
are tightened securely.
♦
Is grounding ensured?
FUSER ASSY
1. Replace the FUSER ASSY. (p.253)
9
WARNING!: Wait until the Fuser cools, and
then start work.
♦
Does the problem still occur?
HVPS/MCU
10
1. Replace the HVPS/MCU. (p.301)
♦
Does the problem still occur?
Troubleshooting

3.4.18 MOTOR ASSY EXIT

Yes No
Step
Ensure
Go to Step 9
1
grounding.
2
3
Problem
Go to Step 10
solved
4
Replace all the Problem
relevant parts. solved
Troubleshooting for Individual Units
Table 3-77. Troubleshooting for MOTOR ASSY EXIT
Action and Question
Parts below can be the source of this error

• MOTOR ASSY EXIT

(p.266)
• HARNESS ASSY LVPS
• PWBA EXIT MOTOR
(p.286)
• HVPS/MCU
(p.301)
• LVPS
(p.287)
MOTOR ASSY EXIT
1. Replace the MOTOR ASSY EXIT. (p.266)
♦
Does the problem still occur?
HARNESS ASSY LVPS
1. Disconnect the P/J27, P/J10, P/J102 and P/J101 on
the HARNESS ASSY LVPS.
2. Check continuity between J27 ↔ J102.
Is there continuity between J27 ↔ J102?
♦
Power Supply to MOTOR ASSY EXIT
1. Disconnect the P/J101 on the PWBA EXIT
MOTOR.
Is the voltage between J101-2 ↔ J101-1 24VDC?
♦
PWBA EXIT MOTOR
1. Replace the PWBA EXIT MOTOR. (p.286)
2. Does the trouble still occur?
Revision C
Yes No
(Chapter 4 Disassembly and
Assembly)
Problem
Go to Step 2
solved
Replace the
Go to Step 3 HARNESS
ASSY LVPS
Replace the
Go to Step 4
LVPS
Replace the Problem
HVPS/MCU solved
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