Epson LX-1050+ Service Manual page 75

LX-105O+ Service Manual
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.
Rev. A
Table 5-10. Paper is Not Fed (2)
Checkpoint
Does the sensor toggle?
(Check with multimeter)
Does the sensor toggle?
2
(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
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?
3
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
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
4
Table 5-11. Paper Out Displayed
Step
Checkpoint
1 —
Finding
No
No
No
No
" ?
CO
Finding
—
Troubleshooting
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.
Solution
Replace the
paper end
sensor.
5-7