5/2011
8-19
Phaser 4600/4620 Printer Service Manual
Major IOT Assemblies
Principles of Operation
Revision - Xerox Internal Use Only
SMPS
The Switched Mode Power Supply (SMPS) generates low voltages (+5 V and +3.3 V for logic
circuits, +5 V for laser diodes, and +24 V for motors/clutches from AC power provided by the
Fuser Drive Board.
Figure 15 SMPS
Fuser Drive Board
The Fuser Drive Board provides AC power for the Fuser and HVPS.
Figure 16 Fuser Drive Board
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