HP LaserJet Enterprise M607n - Low-voltage power supply functions; High-voltage power supply; High-voltage power supply circuits

The printer also stops the +24VB power when the +24V interlock switch is turned o. This stops DC power
supply to the following load:
●
High-voltage power supply
●
Drum motor
●
Fuser motor
●
Duplex switchback clutch (M607dn, M608dn/x, M609dn/dh/x, M631, M632, M633 models)
The remote switch control circuit turns on or o the printer power so that the AC power ows even when the
power switch is turned
o. Unplug the printer power cord before disassembling the printer.
Low-voltage power supply functions
The printer has the following low-voltage power supply functions:
Table 1-11 Low-voltage power supply functions
Function Behavior
Inactive OFF The power supply is o.
Active OFF (state of sleep) The low-voltage power supply
is output only to the formatter
and DC controller.
High-voltage power supply
The DC controller controls the high-voltage power supply (HVPS) to generate biases. The high-voltage power
supply delivers the high-voltage biases to the following components used to transfer toner during the image-
formation process:
●
Primary charging roller (in the toner cartridge)
●
Developing roller (in the toner cartridge)
●
Transfer front guide
●
Transfer roller
●
Static charge eliminator
●
Fuser lm
●
Pressure roller
High-voltage power supply circuits
The high-voltage power supply contains the following separate circuits:
ENWW Engine-control system 13