Epson EPL-N2050 Service Manual page 70

EPSON EPL-N2050
Table 3-7. Inoperative Printer (Continued)
Step Actions & Questions
PWBA HVPS
Unplug P/J11 on the PWBA HVPS.
5
Turn ON the Main Power.
Does the Fan function normally?
FAN ASSY
Unplug P/J283 on the PWBA HKB MCU.
6 Turn ON the Main Power.
Check the voltage between P283-1 and P283-3.
Is there +24VCD between P283-1 and P283-3?
CLUTCH ASSY FEED
Disconnect P/J65 from the PWBA Feeder.
7
Turn ON the Main Power.
Does the Fan function normally?
CLUTCH ASSY TURN
Disconnect P/J64 from the PWBA Feeder.
8
Turn ON the Main Power.
Does the Fan function normally?
MOTOR ASSY
Disconnect P/J67 from the PWBA Feeder.
9
Turn ON the Main Power.
Does the Fan function normally?
SOLENOID PICK UP
Disconnect P/J44 from the PWBA Feeder.
10
Turn ON the Main Power.
Does the Fan function normally?
CLUTCH REGI
Disconnect P/J43 from the PWBA Feeder.
11
Turn ON the Main Power.
Does the Fan function normally?
Troubleshooting
Yes No
Replace the
Go to Step 6.
PWBA HVPS.
Replace the
Go to Step 7.
Fan Assy.
Replace the
Clutch Assy Go to Step 8.
Feeder.
Replace the
Clutch Assy Go to Step 9.
Turn.
Replace the
Go to Step 10.
Motor Assy.
Replace the
Solenoid Pick Go to Step 11.
Up.
Replace the
Go to Step 12.
Clutch Regi.
Troubleshooting by Printer Performance
Table 3-7. Inoperative Printer (Continued)
Step Actions & Questions
MOTOR ASSY MAIN
Disconnect P/J29 from the PWBA HKB MCU.
12
Turn ON the Main Power.
Does the Fan function normally?
TONER SENSOR
Disconnect P/J42 from the PWBA Conn.
13
Turn ON the Main Power.
Does the Fan function normally?
ROS ASSY
Unplug P/J21 from the PWBA HKB MCU.
14
Turn ON the Main Power.
Does the Fan function normally?
Revision B
Yes No
Replace the
Motor Assy Go to Step 13.
Main.
Replace the
Go to Step 14.
Toner Sensor.
Replace the
Replace the
PWBA HKB
ROS Assy.
MCU.
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