Ricoh FT5233 Service Manual page 26

ELECTRICAL COMPONENT DESCRIPTION
Symbol Name
S6 Lower tray paper
end
S7 Upper tray upper
limit (non-duplex
machine only)
S8 Lower tray upper
limit
S9 Lower relay
S10 Upper relay
S11 Registration
S12 Image density
(ID)
S13 V
S14 Fusing exit
S15 Junction gate
(duplex machine
only)
S16 Scanner H.P.
S17 Lens H.P.
S18 Platen position
S19 3rd scanner H.P.
S20 Original length
Function
Informs the CPU when the lower paper tray
runs out of paper.
Detects the upper position of the paper
stack in the upper tray to stop the upper lift
motor.
Detects the upper position of the paper
stack in the lower tray to stop the lower lift
motor.
Detects the lead edge of paper from the
lower paper tray to determine the stop
timing of the lower paper feed clutch and
detects misfeeds.
Detects the lead edge of paper from the
upper paper tray to determine the stop
timing of the upper paper feed clutch and
detects misfeeds.
Detects the lead edge of paper to
determine the stop timing of the feed relay
clutch and detects misfeeds.
Detects the density of the ID sensor pattern
on the drum to control the toner density.
Detects the VR and VL patterns.
Detects misfeeds.
Detects misfeeds.
Informs the CPU when the 1st scanner is at
the home position.
Informs the CPU when the lens is at the
full-size position.
Informs the CPU when the platen cover is
positioned. When the angle between, the
platen cover and the exposure glass is
about 30 degrees.
Informs the CPU when the 3rd scanner is in
the full size position.
Detects the original length.
1-22
12 February 1992
Index No.
25
30
27
51
50
52
57
58
62
63
68
72
74
76
89