Ricoh FT8680 Service Manual page 16

31 July 1995
Name
Paper Volume - 1st Tray Detects the amount of paper in the 1st tray.
Paper Volume - 2nd Tray Detects the amount of paper in the 2nd tray.
Paper Volume - 3rd Tray Detects the amount of paper in the 3rd tray.
Paper Volume - LCT
Registration Sensor
Return Home Position
Scanner Home Position
Sheet Through Home
Position
Toner Cartridge
Toner Coil Overload
Toner Near End
Transport
LCT Paper Position
Upper Limit - 1st Tray
Upper Limit - 2nd Tray
Upper Limit - 3rd Tray
Upper Limit - LCT
Duplex Exit
Solenoids
Cleaning
Inverter Gate
Junction Gate
LCT Lock
Pick-up - 1st Tray
Pick-up - 2nd Tray
Pick-up - 3rd Tray
Pick-up - LCT
Pick-up - By-pass
Pinch Roller
Duplex Pressure Plate
Positioning
Original Scale
By-pass Gate
Switches
1st Tray Down
2nd Tray Down
3rd Tray Down
LCT Down
ELECTRICAL COMPONENT DESCRIPTIONS
Detects the amount of paper in the LCT.
Detects the lead edge of paper to determine the stop
timing of a feed clutch and detects misfeeds.
Detects when the 1st scanner is at the return position.
Detects when the 1st scanner is at the home position.
Detects when the 1st scanner is at the 1 sheet
through home position. (European version only)
Detects when a toner cartridge is in the machine.
Detects the toner collection coil drive gear operation.
Detects toner near end condition.
Detects misfeeds.
Detects the top sheet position in the LCT tray.
Sends signal to stop lifting up the 1st tray bottom
plate.
Sends signal to stop lifting up the 2nd tray bottom
plate.
Sends signal to stop lifting up the 3rd tray bottom
plate.
Sends signal to stop lifting up the LCT bottom plate.
Jam detector.
Brings the cleaning blade into contact with the drum.
Drives the inverter gate up and down.
Drives the junction gate up and down.
Locks the LCT.
Lifts the pick-up roller of the 1st tray.
Lifts the pick-up roller of the 2nd tray.
Lifts the pick-up roller of the 3rd tray.
Lifts the pick-up roller of the LCT.
Lifts the pick-up roller of the by-pass feed table.
Brings the return pinch rollers into contact with a
paper.
Brings the pressure plate on papers in the duplex unit.
Lowers the positioning roller in the duplex unit.
Moves the original scale to the sheet through position
(European version only).
Moves the by-pass gate to the down position.
Lowers the 1st tray bottom plate.
Lowers the 2nd tray bottom plate.
Lowers the 3rd tray bottom plate.
Lowers the LCT bottom plate.
1-13
Function Index. No.
38A
38B
38C
148
22
31
8
33
2
1
35
18
140
12
13
19
151
16
54
62
61
139
69
70
73
149
83
60
134
135
59
80
47A
47B
47C
147