2-50 Phaser 7500 Printer Service Manual
Theory of Operation
L/H Cover Interlock Switch (PL14.1.3)
The L/H Cover Interlock Switch detects the Open/ Close state of Left Hand Cover.
Opening the Left Hand Cover cuts off the DC power supply (+24 VDC) to the
printer.
Control Panel (PL19.2.13)
The Control Panel consists of the LCD, LED, and Switch. The LCD and LED indicate
the printer status while the Switch is used to operate the printer.
Thermo Sensor (PL18.1.14)
If the louvre of the Right Cover is blocked by books, files, or wall, etc., the
temperature of the LVPS element might rise abnormally and result in damage to
the printer. To prevent that, the Thermo Sensor detects the temperature in the
vicinity of the LVPS to shut down the printer.
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