AR-161 (serv.man15). AR161 Service Manual-Electrical Section - Sharp Copying Equipment Service Manual (repair manual). Page 16

The IC31 is the motor control IC, which generates the pseudo AC waveform with the pulse signals (TM, TM-) outputted from ASIC, driving the toner
supply motor.

The CCD PWB is provided with the CCD (Charge-Coupled Device), the differential amplifier which amplifies image signals, and the AD convertor
which converts the amplified image signals into digital signals. 
The DC power and the pulse supply pins necessary for operating the CCD image sensor are the power source (CD pin), GND (SS pin), shift pulse
(SH pin), transfer pulse (

φ

 1 pin), (

φ

 2 pin), reset pulse (/RS pin), clamp pulse (/CP pin), and sampling (/SP pin). 

φ

 1 and 

φ

 2 and to the floating capacitor section

where electric signals are voltage-converted. Electric charges from the even number pixel shift register and the odd number pixel shift register are
flowed to the floating capacitor section alternatively.

The /RS signal is the reset signal of the CCD output signal. The CCD output is expressed as electric charges equivalently accumulated in the
capacitor. Therefore, to take the CCD output data one pixel by one pixel, one output data must be cleared after it is outputted. The /RS signal is
used for that operation.

AR-161

AR-160/161 FM/E [13] ELECTRICAL SECTION 12/1/1998

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