Epson EPL-N1200, Руководство по обслуживанию

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Table 5-14. Main Motor Doesn’t Rotate Correctly
Cause Step Checkpoint Finding Solution
The main motor coil may
be open or shorted.
1
Disconnect connector CN5
on the power supply board
and check the coil resistance
between: pin 1 and pin 2; pin
2 and pin 3; pin 4 and pin 5;
and pin 5 and pin 6 (4 points
total) on the disconnected
cable side of the connector
using a multimeter.
Pin 1 — Pin 2
Pin 2 — Pin 3
Pin 4 — Pin 5
Pin 5 — Pin 6
Are resistances of all four
points approximately 4 ohms?
No
Replace the main
motor.
If any coil is shorted, check
the main motor drive circuit
using the following procedure:
1. Set the multimeter to
voltage range.
2. Place the (+) terminal of the
multimeter on pins 1, 3, 4,
or 6 of connector CN5 on
the power supply board.
3. Place the (-) terminal on
pin 2 of connector CN7 of
the power supply board
(GND).
With power on, does the
multimeter detect voltage?
Yes
Replace the power
supply board.
The power supply board
may be dead.
2 — —
Replace the power
supply board.
Table 5-15. The LCD Displays SERVICE REQ. E0005
Cause Step Checkpoint Finding Solution
Connector CN4 on the
power siupply board may
be disconnected.
1
Is connector CN4 on the
power siupply board
disconnected?
Yes Connect it.
The fan motor may be
dead.
2 — — Replace it.
Table 5-16. The LCD Displays SERVICE REQ. E0006
Cause Step Checkpoint Finding Solution
The optical unit may be bad. 1 — —
Replace the
optical unit.
The engine controller board
may be bad.
2 — —
Replace the
engine controller
board.
EPL-N1200 Service Manual Troubleshooting
Rev. A 5-7