Sony UP-D70XR, Service Manual

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4-7
UP-D70XR
e) Ribbon take-up motor drive
This motor is used to take-up ink ribbon. This motor stabilizes to constant the tension of ink ribbon
by PWM driving. Take-up motor controls only ribbon sending direction by PWM. (CN4-12, 13)
Drive IC is IC104 (MEC-11 board).
CN4-12pin CN4-13pin
FW (Sending direction) 1 PWM
BW (Reverse direction) 0 1
BRAKE 1 1
OTHERS 0 0
f) Ribbon supply motor drive
This motor controls back-tension of ink ribbon. This motor is controlled with PWM (both directions
of ribbon) to stabilize constantly the back-tension of ink ribbon. (CN4-14, 15)
Drive IC is IC103 (MEC-11 board).
CN4-14pin CN4-15pin IC106-9pin IC106-13pin IC101-46pin
FW (Feeding direction) 1 PWM 1 0 PWM
BW (sending direction) PWM 1 0 1 PWM
BRAKE 1 1 1 1 X
OTHERS 0 0 0 0 0
g) Fan motor drive
Fan motor operates during printing and the time when head cooling is needed. (CN4-16)
h) Take-up/supply ribbon FG sensor (CN5-8, 9)
Function : These FG sensors detect each rotation of take-up or supply motor.
Level : Rectangle wave output
Check method : Self diagnosis
i) PATH 0 sensor (CN5-16)
Function : This is a mechanism sensor that is placed at rear of feed roller. As this is a
mechanism sensor, this sensor can judge the pass without discrimination of
OHP sheet or ordinary paper. This is composed by photo interrupter and
shutter.
Level : When passing through the paper, sensor indicates H.
Check method : Self diagnosis