Troubleshooting LX-105O+ Service Manual
Table 5-9. Paper is Not Fed (1)Cause Step
Checkpoint
Finding
Solution
The paper
end
sensor
Does the sensor toggle?
Replace the
‘
(Check with
multimeter) No
may be dead. paper end
sensor.
The release sensor Does the sensor toggle? Replace the
may be dead.
2
(Check
with multimeter) No
release sensor.
Disconnect CN5 on the TAMA
board and cheek 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 Replace the
multimeter.
No
Pin 12- Pin 10
paper feed motor.
Pin 8- Pin 10
Pin 11- Pin 9
Pin 7- Pin 9
Are the resistances of all four
points approximately 40 ohms?
The paper feed motor
~
may be dead. If any coil is shorted, check the
paper feed motor drive circuit
using
the following procedure:
1. Set the multimeterto
resistance
check mode.
2. Place the (-) terminal of the
multimeter
on pins 7, 8, 11, 12 of
N.
Replace the
connector
CN5
on the
TAMA
paper feed motor
board.
with
TAMA
board.
3. Place the
(+)
terminal on pin
2
of
connector
CN7
on the
TAMA
board.
(GND)
With power off, does the
muitimeter detect “00” ?
The paper path may be
~
Reassemble the
bad.
——
paper path.
5-6
Rev.
A