EPSON EPL-N3000/AcuLaser M4000N
Revision C
Troubleshooting
Troubleshooting for Individual Units
115
Confidential
3.4.4 FUSER ASSY
Table 3-63. Troubleshooting for FUSER ASSY
Step
Action and Question
Yes
No
Parts below can be the source of this error (
Chapter 4 Disassembly and Assembly
)
• FUSER ASSY
(p.253)
• HVPS/MCU
(p.301)
• INTERLOCK S/W 24V
(p.247)
• HARNESS ASSY FUSER
(p.251)
• HARNESS ASSY AC110V
(p.289)
• HARNESS ASSY LVPS
• LVPS
(p.287)
1
Heater circuit
1.
Remove the SHIELD PLATE LVPS.
(p.285)
2. Disconnect P/J47 from the LVPS.
(Refer to
“Connectors
(p.406)”
)
♦
When the following connectors are checked, is there
normal continuity between them?
P/47-1
↔
P/J47-5
P/47-1
↔
P/J47-3
Go to Step 3
Go to Step 2
2
HARNESS ASSY FUSER
1.
Remove the FUSER ASSY.
(p.253)
WARNING!: Wait until the Fuser cools, and
then start work.
2. Check whether there is continuity between the
following connectors.
J4647B-3
↔
J47-1
J4647B-2
↔
J47-3
J4647-B1
↔
J47-5
♦
Is there continuity in each wiring between J4647
↔
J47?
Replace the
FUSER ASSY
Replace the
HARNESS
ASSY FUSER
3
Fuser Power Supply
1. Disconnect P/J48 from the LVPS.
2. Remove the Imaging Cartridge.
3. Turn the Power Switch ON.
4. Check the voltage between P/J48-1
↔
P/J48-3.
♦
Is the voltage between P/J48-1
↔
P/J48-3 the
standard voltage of 100-110 VAC?
Go to Step 5
Go to Step 4
4
Power Supply
1. Check the voltage of the AC outlet.
♦
Is the power source voltage the standard voltage of
100-110 VAC?
Replace the
HARNESS
ASSY
AC100V
Inform and
ask customer's
electrical
engineer to
correct.
5
Heater Rod ON signal
1. Make certain that the FUSER ASSY has cooled.
2. Make certain that the Imaging Cartridge has been
removed.
3. Measure the voltage between P/J41-13
↔
P/J41-3
and between P/J41-12
↔
P/J41-3.
♦
Is the voltage 0 VDC at turning on of the Heater
Rod and 3.3 VDC at its turning off between P/J41-
13
↔
P/J41-3 and between P/J41-12
↔
P/J41-3?
Go to Step 7
Go to Step 6
6
HARNESS ASSY LVPS
1. Disconnect P/J11 from the HVPS/MCU.
2. Check continuity between the following terminals:
P/J41-1
↔
P/J11-16
P/J41-9
↔
P/J11-8
P/J41-10
↔
P/J11-7
P/J41-12
↔
P/J11-5
P/J41-13
↔
P/J11-4
♦
Is there continuity in each wiring between P/J41
↔
P/J11?
Replace the
HVPS/MCU
Replace the
HARNESS
ASSY LVPS
Table 3-63. Troubleshooting for FUSER 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 ...