Samsung CLP-300 Series Service Manual page 31

11) Clutches Control
GPIO Controller built in CHORUSm controls all clutches, which help printer to do print job normally. There are clutch-
es such as Paper Pick-up Clutch, Registration Clutch, Developer Home Clutch, ITB Clutch, T2 Clutch, Fuser Clutch,
Developer Toner Supply Clutch, etc.
12) PWM Control
PWM Controller built in CHORUSm controls the parts that require PWM for normal printing, such as BLDC drive
speed and HVPS high voltage level, etc.
13) ADC Control
It is controlled by ADC Controller built in CHORUSm, and is used for perception of charged voltage and current, 1st
and 2nd transfer voltage and current, fusing temperature, used-up toner and toner amount, and interior temperature,
etc.
14) DAC Control
It is controlled by DAC Controller built in CHORUSm and used to set standard level of light amount of LSU Laser
Diode.
Samsung Electronics
System Overview
Service Manual
3-13