Cover Open Detection - Xerox 7300B - Phaser Color Laser Printer Service Manual

Cover Open Detection

When the top cover or the right cover (Door A) are opened, the interlock switch is
deactuated shutting off the +34 volts supplied to the high voltage power supply. The
engine controller board receives a signal (CVOPN) indicating the status and reporting
the error message "Close Top Cover" or "Close Right Door A". At this time, the
engine controller board receives the FCOVER signal and implements the cover open
processing.
Detection
Circuit
detect
circuit
8-238
+34V
COVOPN (2P)
P10, 5
P7, 6
HVOLT (16P)
FCOVER(3P)
+34V
Top cover interlock switch
High-voltage power supply board
detect
circuit
Right Cover Door A
interlock switch
Duplex (16P)
Phaser 7300 Color Printer Service Manual
Duplex unit
+34V
S7300-128