LX-105O+ Service Manual Troubleshooting
Table 5-10. Paper is Not Fed (2)
Cause
The paper end sensor
may be dead.
The release sensor
may be dead.
The paper feed motor
may be dead.
The paper path may be
bad.
Cause
The paper end sensor
is dead.
1
2
3
4
Checkpoint
Does the sensor toggle?
(Check with
multimeter)
Does the sensor toggle?
(Check with
multimeter)
Disconnect
CN5
on the
TAMA
board and check the coil resistance
between: pin 12 and pin 10; pin 8
and pin 10; pin 11 and pin 9; pin 7
and pin 9 (4 points total) on the
disconnected cable side using a
muitimeter.
Pin 12- Pin 10
Pin 8- Pin 10
Pin 11- Pin 9
Pin 7- Pin 9
Are the resistances of all four
points approximately 40 ohms?
If any coil is shorted, check the
paper feed motor drive circuit using
the following procedure:
1. Set the
multimeter
to
resistance check mode.
2. Place the (-) terminal of the
multimeter
on pins 7, 8, 12 of
connector
CN5
on the
TAMA
board.
3. Place the
(+)
terminal on pin 2 of
connector
CN7
on the
TAMA
board.
(GND)
With power off, does the
multimeter
detect “
CO
” ?
—
Finding
No
No
No
No
Table 5-11. Paper Out Displayed
Solution
Replace the
paper end
sensor.
Replace the
release sensor.
Replace the
paper feed motor.
Replace the
paper feed motor
with
TAMA
board.
Reassemble the
paper path.

Step

Checkpoint
Finding Solution
Replace the
1
——
paper end
sensor.
Rev.
A
5-7