Ricoh FW780 Service Manual page 422

ELECTRICAL COMPONENT DESCRIPTIONS
1.2 ELECTRICAL COMPONENT DESCRIPTIONS
The index numbers refer to the electrical component layout on the reverse side of
the Point to Point index (Water proof paper).
Name
Motors
Cutter
Roll Feed
Magnetic Clutches
Roll Feed 1
Roll Feed 2
Switches
Right Cutter
Left Cutter
Dehumidity
Sensors
Paper End 1
Paper End 2
Leading Edge
Door
Printed Circuit Board
RF Drive
Others
RF Dehumidity Heater 1
RF Dehumidity Heater 2
B435/B436
Function
Drives the cutter (DC Reversible Motor).
Drives all mechanical components except
the cutter unit (Dc Stepper Motor).
Transmits the roll feed motor drive to the 1st
roll feed roller.
Transmits the roll feed motor drive to the
2nd roll feed roller.
Detects whether or not the cutter is at the
right home position.
Detects whether or not the cutter is at the
left home position.
Turns on the RF Dehumidity heaters when
not copying.
Detects when the roll runs out of paper.
Detects when the roll runs out of paper.
Misfeed detector. Also detects the leading
edge of the paper, triggering the paper
length pulse count.
Indicates "Door Open" on the operation
panel and disables the key operation.
Controls all roll feed unit functions
accordance with copier CPU.
Removes humidity from the roll paper.
Removes humidity from the roll paper.
7-2
Index No.
59
61
56
60
54
57
62
51
50
55
58
49
53
52
SM