Epson EPL-N3000 - Page 114

EPSON EPL-N3000/AcuLaser M4000N Revision C
Troubleshooting Troubleshooting for Individual Units 114
Confidential
9
/ROSMOT ON Signal of Scanner Motor
1. Install the Imaging Cartridge.
2. Close the COVER OPEN.
3. Check voltage behavior between P/J131-3 ↔ P/
J131-2 after turning power on.
♦Is the voltage 0V immediately after power on and 5
VDC 10 seconds after stop of the Main Motor?
Go to Step 11 Go to Step 10
10
Continuity of the HARNESS ASSY ROS
1. Disconnect P/J13 of the HVPS/MCU
2. Check continuity between P/J13 ↔ P/J130.
♦Is there continuity in each wiring between P/J13 ↔
P/J130?
Replace the
HVPS/MCU
Replace the
HARNESS
ASSY ROS
11
Continuity of the HARNESS ASSY ROS
1. Disconnect P/J17 and P/J16 from the HVPS/MCU.
2. Disconnect P/J170 and P/J160 from the ROS ASSY.
3. Check continuity between the following terminals:
P/J17 ↔ P/J170
P/J16 ↔ P/J160
♦Does each wire between P/J17 ↔ P/J170 and
between P/J16 ↔ P/J160 have continuity?
Go to Step 12
Replace the
HARNESS
ASSY ROS
12
SOS power supply circuit of the ROS ASSY
1. Disconnect P/J140 from the ROS ASSY.
2. Check continuity between the following terminals:
P/J140-8 ↔ P/J201-1
P/J140-6 ↔ P/J201-2
P/J140-7 ↔ P/J201-3
♦Is there continuity between each circuitry of P/J140
↔ P/J201?
Go to Step 13
Replace the
ROS ASSY
13
HVPS/MCU
1. Replace the HVPS/MCU. (p.301)
♦Does the problem still occur?
Go to Step 14
Problem
solved
14
ROS ASSY
1. Replace the ROS ASSY. (p.239)
♦Does the problem still occur?
Go to 3.4.17
Electrical
Noise (p.127)
Problem
solved
Table 3-62. Troubleshooting for ROS ASSY (continued)
Step Action and Question Yes No