Service manual

Circuit Description
3-30
3-5-7-3. Organization of the Device
HVPS is comprised of electrification output unit, bias output unit and transfer output unit.
1) Input Unit
2) Electrification Output (Enable) Unit: MHV (Main High Voltage)
3) Bias Output (Enable) Unit: DEV (Development Voltage)/Supply(Supply Voltage)/BLADE(Blade Voltage)
4) Transfer ‘+’ Output (Enable) Unit: THV(+)(Transfer High Voltage(+))
5) Transfer ‘-’ Output (Enable) Unit: THV(-)(Transfer High Voltage(-))
6) Switching Unit
7) Feedback Unit
8) Regulation Unit
9) Output Unit
SWITCHING
CONTROL UNIT
TRANS
MHV-PWM
MHV
REGULATION
CIRCUIT
OUTPUT
CIRCUIT
<Electrification Unit Block-Diagram>
FEEDBACK
THVPWM
THVEA
THVREAD
PWM
CONTROL UNIT
SWITCHING
CONTROL UNIT
TRANS
SWITCHING
CONTROL UNIT
TRANS
FEED BACK
THV
REGULATION
CIRCUIT
REGULATION
CIRCUIT
THV
ENVIRONMENT
RECOGNITION
CIRCUIT
<Transfer Output Unit Block Diagram>