Ricoh FT7770 Service Manual page 50

14. Others
Auto ID Cable (O-2)
A3/Ledger Counter (O-9)* 49
Circuit Breaker (O-6)
Development Trans.
(O-5)
Key Counter (O-10)*
Power Supply Unit (O-1) 109
Lower Tray Button
Indicator (O-12)
Main Transformer (O-4) 39
Noise Filter (O-7)
Noise Filter-220/240V
(O-13)
Thermofuse (O-3)
Total Counter (O-8)
Upper Tray Button
Indicator (O-11)
* Option
14 Optic fiber cable.
Keeps a count of the number of A3/Ledger
copies made.
117 Guards against wall voltage surges.
126 Steps 100 volts ac down to working voltage
levels for the development PCB.
Prevents use of the copier until installed.
27
Keeps a separate count of copies made for
administrative purposes.
Provides dc power to clutches, solenoids,
and other dc components.
power to the quenching lamp.
77 Blinks when the tray is moving up or down.
Remains lit when the tray reaches the down
position.
Steps wall voltage down to 100 volts.
119 Removes electrical noise.
118 Removes electrical noise.
95 Provides back-up overheat protection in
the fusing unit.
50 Keeps a count of the number of copies
made.
79 Same as the lower tray button indicator.
1-33
Provides ac
(Opens at 169°C.)
30 April, '89