Epson EPL-N1600 Service Manual page 67

EPSON EPL-N1600
1.3 SERVICE REQ E0003
The Fuser Assy. is defective.
Step Actions and Questions
SUSPECT COMPONENTS
The following components are
associated with this specific problem.
One or more of these components may
have failed partially or completely. If you
cannot isolate the problem using this
FIP, replace each component listed
below, one at a time, until the problem
disappears.
• Fuser Assembly
1 TEMPERATURE SENSORS
1. Unplug J292 from P/J291.
2. Check the continuity between the two
black wires on J292 (Leading to the
Sensor Assembly Temperature).
3. Check the continuity between the two
white wires on J292 (leading to the
Sensor Assembly Temperature).
Are there a few hundreds ohms between
the two black wires and between the two
white wires on J292?
2 HEATER LAMP CIRCUIT
1. Unplug the AC power cord from the
AC wall outlet.
2. Unplug J11 from the HPS.
3. Check the continuity between the two
wires on J11.
Is there continuity (approximately 2.5 )
between the two wires on J11?
Rev. A
Yes No
Go to step 2. Replace the
Sensor
Assembly
Temperature.
Go to step 6. Go to step 3.
Step Actions and Questions
3 HEAT LAMP
1. Remove the Heater Lamp.
2. Check the continuity between the two
ends of the Heat Rod.
Is there continuity (approximately 2.5 )
between the two ends of the Heat Lamp?
FUSE
4
Check the continuity between the two
ends of the Fuse.
Is there continuity (0 ) between the two
ends of the Fuse?
THERMOSTAT
5
Check the continuity between the two
ends of the Thermostat.
Is there continuity (0~2 ) between the
two ends of the Thermostat?
HEATER LAMP POWER SUPPLY
6
1. Reinstall the Fuser, if it was removed
during a previous step.
2. Switch ON printer power.
3. Check the voltage between the two
wires on P/J11.
Is there 90~132VAC (110VAC model) or
198~264VAC (220VAC model) even
momentarily between the two wires on P/
J11 before the U4 code appears?
Chapter 3 Troubleshooting
Yes No
Go to step 4. Replace the
Heater Lamp.
Go to step 5. Replace the
Fuse
Go to step 6. Replace the
Thermostat.
Replace Replace the
C258MAIN HPS with new
BOARD. one.
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