Epson EPL-N3000 Service Manual page 77

EPSON EPL-N3000/AcuLaser M4000N
Table 3-11. Troubleshooting for "Paper Jam/Regi to Fuser" (continued)
Step Action and Question
Position of paper (3)
5 1. Check the leading edge position of the paper.
♦
Has the leading edge of paper passed the BTR
ASSY?
Position of paper (4)
1. Check the leading edge position of the paper.
6
♦
Has the leading edge of paper passed between the
ROLL REGI METAL and the ROLL REGI
RUBBER?
Actuator Exit
1. Make certain that the Imaging Cartridge has been
removed.
7
2. When the Actuator Exit of the FUSER ASSY is
moved up/down by hand inserted through the outlet
of the FUSER ASSY, does the Actuator Exit operate
smoothly?
♦
Does the Actuator Exit move smoothly?
Exit Sensor
1. Make certain that the Imaging Cartridge has been
removed.
2. While pressing and releasing the Actuator Exit
repeatedly, measure the voltage of P/J46-5 ↔ P/J46-
8
4 on the HVPS/MCU. (Refer to
(p.406)")
♦ 0 VDC between P/J46-5 ↔ P/J46-4 when the
Actuator Exit is pressed and 3.3 VDC when it is
released?
Continuity of HARNESS ASSY FUSER
WARNING!: Start this work after the Fuser has
cooled off.
9
1. Disconnect P/J46 from the LVPS.
2. Remove the FUSER ASSY.
Is there normal continuity between P/J46 ↔ P/
♦
J4647?
Troubleshooting
Yes
Go to Step 14 Go to Step 6
Go to Step 13 Go to Step 18
Replace the
Go to Step 8
FUSER ASSY
Replace the
Go to Step 9
"Connectors LVPS
Replace the
Go to Step 10 HARNESS
ASSY FUSER
Troubleshooting When There is Error Display
Table 3-11. Troubleshooting for "Paper Jam/Regi to Fuser" (continued)
No Step Action and Question
Power supply to the Sensor Exit
10
3.3 VDC between P/J46-3 ↔ P/J46-4?
♦
Continuity of the LVPS
11
♦ Is there continuity between P/J41-1 ↔ P/J46-3?
Roll of the FUSER ASSY
1. Remove the FUSER ASSY. (p.253)
WARNING!:
12
2. Try to turn the Gear HR of the Fuser Assy with your
finger.
♦
Do the gear and roll turn smoothly?
BTR ASSY
1. Remove the BTR ASSY. (p.254)
13
2. Check the shapes of the BTR ASSY, shaft and
Bearing BTR.
♦
Is the BTR ASSY free from any abnormality?
GUIDE ASSY CRU R
14
♦
Is the GUIDE ASSY CRU R free from dirt and
damage?
Continuity to GUIDE ASSY CRU R
15
1. Remove the GUIDE ASSY CRU R. (p.257)
♦
Does each wire of harness have continuity?
HVPS/MCU
1. Replace the HVPS/MCU. (p.301)
16
2. Print the status sheet.
Refer to p. 430
♦
Does a similar trouble occur?
Go to Step 12 Go to Step 11
Go to
LVPS (p.111)
Start this work after the Fuser
Replace the
has cooled off.
LVPS
Go to Step 14
Clean or
replace the
GUIDE ASSY
CRU R
Go to Step 16
Go to Step 17
Revision C
Yes No
3.4.1 Replace the
LVPS
Replace the
FUSER ASSY
Replace the
BTR ASSY
Go to Step 15
Replace the
GUIDE ASSY
CRU R
Problem
solved
77
Confidential