Ricoh FT8680 Service Manual page 18

31 July 1995
4.2 ARDF
Symbol Name
Motors
Feed-in
M1
M2 Belt
M3 Inverter
M4 Job Separation
Circuit Boards
PCB1 DF Main
Indicator
PCB2
Solenoids
Switch Back
SOL1
SOL2 Inverter Gate
Moving Original
SOL3
Scan Gate
Sheet-through
SOL4
Guide
Sensors
S1 Entrance Cover
S2 Lift
S3 Inverter Cover
Pick-up Roller
S4
H.P.
Job Separation
S5
H.P.
Job Completion
S6
Original
S7
Registration
S8
S9 Inverter Jam
Inverter
S10
Registration
Inverter Entrance Sets the inverter motor and the belt motor off,
S11
S12 Exit
CFF
S13
ELECTRICAL COMPONENT DESCRIPTIONS
Function
Drives the pick-up rollers, separation rollers
and relay rollers.
Drives the transport belt.
Drives the inverter rollers and the exit rollers.
Drives the job separator.
Controls overall ARDF functions.
Indicates the Insert Original indicator and the
Auto Feed indicator.
Switches the switch back gate position to
directs the original to the switch back tray or
onto the exposure glass.
Opens the inverter gate.
Opens the moving original scan gate
(European version only).
Moves the sheet-through guide to the sheet
through position (European version only).
Detects if the entrance cover is open.
Detects if the transport unit is open.
Detects if the inverter cover is open.
Detects if the pick-up roller is in the home
position.
Detects if the job separator is in the home
position.
Detects that last original of the first job is fed
from the original table.
Detects if the original is set on the original
table.
Sets the feed-in motor, belt motor and inverter
motor off timing. Detects original misfeed.
Detects paper jams in switch back operation.
Sets the inverter motor and the belt motor off,
reversing timing. Detects original jams.
reversing timing, inverter solenoid and switch
back solenoid off timing.
Detects paper jams.
Detects if the computer form is set in the CFF
guide. Counts the holes lined up on the
computer form.
1-15
Index. No.
2
16
17
5
3
6
15
23
25
27
4
14
22
1
7
8
9
12
18
19
20
21
11