Main Board - Samsung ML-1665 Service Manual

Product spec and feature
2.2.4.2 HVPS and SMPS Board
The HVPS Board and SMPS Board are in one united board.
The HVPS board creates the high voltage of THV/MHV/Supply/Dev and supplies it to the developer part for
making best condition to display the image. The HVPS part takes the 24V and outputs the high voltage for
THV/MHV/BIAS, and the outputted high voltage is supplied to the toner, OPC cartridge, and transfer roller
It is the power source of entire system. It is assembled by an independent module, so it is possible to use for
common use. It is mounted at the side of the set.
It is consisted of the SMPS part, which supplies the DC power for driving the system, and the AC heater
control part, which supplies the power to fuser. SMPS has two output channels. Which are +3.3V and +24V.

Main board

Fuser
2-20
Service Manual
Samsung Electronics