User manual

95.08.23.11.30
Color LaserWriter 12/600 PS Basics & Theory 1–123
If the CPU on the DC controller detects that oil is low, it issues an oil-
low notice to the I/O controller. Approximately 50 sheets of paper can
be printed before the CPU determines that oil has run out and stops the
printer.
The oil catch tray is equipped with an oil overflow sensor (PS10). A
floating ball with a flag is floated in the oil catch tray, and as the oil
level rises, the flag interrupts the sensor and the oil overflow sensor
signal (
OILFUL) sent to the mechanical controller goes “H.” When the
DC controller is notified of the overflow of oil by the mechanical
controller, it stops the printer and issues the oil-overflow signal to the
I/O controller. If the
OILFUL signal continues to be “H” for 2 seconds
or more, the DC controller notifies the I/O controller that an oil over-
flow failure has occurred.
Cleaning Belt
Oil Blade
Oil Applying
Roller
Oil Nozzle
Oil
Applying
Blade
Oil Pan 1
Blade
Pipe
Filter
Oil Pan 2
Oil Overflow
Sensor (PS10)
Note: Only the floating ball actuator portion of oil-low sensor PS13 is within
the fuser assembly. The sensor portion is in the oil sensor assembly, which
is mounted on the chassis behind the fuser.
Oil Pump
(Mechanically Driven)
Oil Bottle
Reservoir
Oil-Low
Sensor
(PS13)
Oil
Bottle