Electrical - Xerox Phaser 7500 Service Manual

Theory of Operation

Electrical

MCU PWB (PL18.3.6)
Motor Drive (MD) PWB (PL18.3.7)
TM Relay PWB (PL18.3.11)
2-48
Thermo Sensor
Main LVPS
HVPS (1st/2nd/DTS)
IP Board
GFI
PB Board
TM Relay Board
MD Board
MCU Board HVPS (Developer/BCR)
The MCU PWB communicates with the Printer Controller and controls the
components used in print operation. The MCU PWB also generates the +3.3VDC
and +2.5VDC voltages that are used by the components from the +5VDC that is
provided by the Main LVPS.
The Motor Drive PWB transmits the signals from the MCU PWB to the parts that
are involved with the print operation.
The TM Relay PWB acts as a relay between the Motor Drive PWB and the Tray
Module PWB.
Front Cover Interlock Switch
Main Power Switch Chassis Assembly
Control Panel
Phaser 7500 Printer Service Manual
IBT Front Cover Switch
L/H Cover
Interlock Switch
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