EPSON EPL-N3000/AcuLaser M4000N
Revision C
Troubleshooting
Troubleshooting for Individual Units
113
Confidential
3.4.3 ROS ASSY
Table 3-62. Troubleshooting for ROS ASSY
Step
Action and Question
Yes
No
Parts below can be the source of this error (
Chapter 4 Disassembly and Assembly
)
• ROS ASSY
(p.239)
• HARNESS ASSY ROS
• INTERLICK S/W 5V
(p.247)
• HARNESS ASSY LVPS
• HVPS/MCU
(p.301)
• LVPS
(p.287)
1
Power supply to the Laser Diode of ROS ASSY.
1. Remove the COVER TOP ASSY
(p.170)
2. Disconnect P/J140 from the ROS ASSY.
3. Install the Imaging Cartridge.
4. Close the COVER OPEN.
5. Check the voltage between J140-8
↔
J140-7.
(Refer to
“Connectors
(p.406)”
)
♦
Is the voltage 5 VDC between J140-8
↔
J140-7?
Go to Step 9
Go to Step 2
2
INTERLOCK S/W 5V
1. INTERLOCK S/W 5V
(p.364)
2. While pushing and releasing the INTERLOCK S/W
5V, check continuity between P/J142-1
↔
P/J142-
3.
♦
Is there continuity between P/J142-1
↔
P/J142-3
when the INTERLOCK S/W 5V is pressed and
discontinuity when it is released?
Go to Step 3
Replace the
INTERLOCK
S/W 5V
3
SWITCH I/L ASSY 5V
1.
Remove the SWITCH I/L ASSY.
(p.173)
2. While pushing and releasing the SWITCH I/L
ASSY 5V, check continuity between P/J144-1
↔
P/
J144-3.
♦
Is there continuity between P/J144-1
↔
P/J144-3
when the SWITCH I/L ASSY 5V is pressed and
discontinuity when it is released?
Go to Step 4
Replace the
SWITCH I/L
ASSY 5V
4
HARNESS ASSY LVPS
1. Disconnect the P/J141.
2. Make certain that there is continuity between P/
J141-1
↔
P/J141-3 when the INTERLOCK S/W
5V and SWITCH I/L ASSY 5V are pushed
simultaneously.
♦
Is there continuity between P/J141-1
↔
P/J141-3
when the INTERLOCK S/W 5V and SWITCH I/L
ASSY 5V are pushed simultaneously, and no
continuity when they are released?
Go to Step 5
Replace the
Harness Assy
LVPS
5
HARNESS ASSY ROS
1. Disconnect the connector P/J14 on the HVPS/MCU.
2. Disconnect the connector P/J140 on the ROS ASSY.
3. Make certain that there is continuity between P/J14-
1
↔
P/J140-8 when the INTERLOCK S/W 5V and
SWITCH I/L ASSY 5V are pushed simultaneously.
♦
Is there continuity between P/J14-1
↔
P/J140-8
when the INTERLOCK S/W 5V and SWITCH I/L
ASSY 5V are pushed simultaneously, and no
continuity when they are released?
Go to Step 6
Replace the
HARNESS
ASSY ROS
6
Power supply to HVPS/MCU
1.
Remove the SHIELD PLATE LVPS.
(p.285)
2. Install the Imaging Cartridge.
3. Disconnect P/J41 from the LVPS.
4. Check whether there is continuity between P/J41-4
↔
P/J41-3.
♦
Is there continuity between P/J41-4
↔
P/J41-3?
Replace the
LVPS
Go to Step 6
7
Continuity of the HVPS/MCU
1. Disconnect P/J14 and P/J11 from the HVPS/MCU
2. Check continuity between P/J14-1
↔
P/J11-13.
♦
Is there continuity between P/J14-1
↔
P/J11-13?
Go to Step 8
Replace the
HVPS/MCU
8
Continuity of the HARNESS ASSY LVPS
1. Disconnect P/J11 from the HVPS/MCU.
2. Check continuity between P/J11-13
↔
P/J41-4.
♦
Is there continuity between P/J11-13
↔
P/J41-4?
Go to Step 9
Replace the
HARNESS
ASSY LVPS
Table 3-62. Troubleshooting for ROS ASSY (continued)
Step
Action and Question
Yes
No
Summary of Contents for AcuLaser M4000N
Page 19: ...Confidential C H A P T E R 1 PRODUCTDESCRIPTION ...
Page 33: ...Confidential C H A P T E R 2 OPERATINGPRINCIPLES ...
Page 63: ...Confidential C H A P T E R 3 TROUBLESHOOTING ...
Page 160: ...Confidential C H A P T E R 4 DISASSEMBLYANDASSEMBLY ...
Page 396: ...Confidential C H A P T E R 5 ADJUSTMENT ...
Page 404: ...Confidential C H A P T E R 6 MAINTENANCE ...