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Troubleshooting
Table 5-6. The LCD Displays Paper Empty or Feed Jam
Cause
Connector for paper
take-up mlenoid maybe
disconnected.
The paper take-up
solenoid coil may be open
take-up sensor fk9
5-4
Step
Checkpoint
Is connector disconnected?
1
Disconnect connector CN2 on
the PWB-F board and check
coil resistance between pin 1
and pin 2 on
the disconnected cable side
of the connector using a
Is the resistance approximately
31 ohms?
If the coil is shorted, check the
solenoid drive circuit using the
2
procedure below:
1. Set the multimeter for
resistance check mode.
2. Place the (-) terminal of
the multimeter on pin 2
of connector CN2 on the
3. Place the (+) terminal of
the multimeteron (GND).
With power on, does the
Disconnect connector CN2 on
the PWB-E board and check
the coil resistance between:
pin 1 and pin 5; pin 2 and pin
5; pin 3 and pin 5; and pin 4
and pin 5(4 points total) on the
disconnected cable side of the
connector using a multimeter.
Pin 1 — Pin 5
Pin 2- Pin 5
Pin 3 — Pin 5
Pin 4 — Pin 5
Are the resistances of all four
points approximately 5 ohms?
If any coil is shorted, check the
main motor drive cimit using
the following procedure:
1. Set the multimeter to
resistance check mode.
2. Place the (-) terminal of the
or 4 of connector CN2 on
the PWB-E board.
3. Place the (+) terminal on
pin 1 of connector CN3 of
the PWB-E board (GND).
With power on, does the
Is paper take-up sensor flag
4
position incorrect?
5
—
Finding
Solution
Yes
Connect it.
Replace the paper
No
take-up solenoid.
Replace the paper
take-up solenoid
Yes
and the PWB-F
board.
Replace the main
motor.
Replace the
Reseat the paper
Yes
t ake-up sensor flag.
Replace the paper
—
t ake-up roller.
Rev. A
I
.
"
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