1-17
SM A229
Overall
Information
Symbol Name Function
Index
No.
S7 Toner Density (TD) Detects the amount of toner in the
developer.
95
S8 Image Density (ID) Detects the density of the ID sensor
pattern on the drum.
91
S9 Toner End Detects toner end. 94
S10 Toner Collection
Motor
Monitors the toner collection motor. 9
S11 Toner Recycling Monitors the toner recycling and
collection unit operation.
1
S12 1st Paper Feed
Controls the 1st paper feed clutch
off/on timing and the 1st pick-up
solenoid off timing.
129
S13 2nd Paper Feed Controls the 2nd paper feed clutch
off/on timing and the 2nd pick-up
solenoid off timing.
126
S14 3rd Paper Feed Controls the 3rd paper feed clutch
off/on timing and the 3rd pick-up
solenoid off timing.
125
S15 1st Tray Lift Detects when the paper in tray 1 is at
the correct height for paper feed.
132
S16 2nd Tray Lift Detects when the paper in tray 2 is at
the correct height for paper feed.
128
S17 3rd Tray Lift Detects when the paper in tray 3 is at
the correct height for paper feed.
123
S18 1st Paper End Informs the CPU when tray 1 runs out
of paper.
130
S19 2nd Paper End Informs the CPU when tray 2 runs out
of paper.
127
S20 3rd Paper End Informs the CPU when tray 3 runs out
of paper.
124
S21 By-pass Paper End
Informs the CPU that there is no
paper in the by-pass feed table.
99
S22 1st Paper Near End Informs the CPU when the paper in
tray 1 is almost finished.
110
S23 2nd Paper Near End Informs the CPU when the paper in
tray 2 is almost finished.
131
S24
3rd Paper Near End Informs the CPU when the paper in
tray 3 is almost finished.
133
S25 Rear Fence HP Informs the CPU when the tandem
tray rear fence is in the home position.
79
S26 Rear Fence Return Informs the CPU when the tandem
tray rear fence is in the return
position.
78
S27 Side Fence Close Detects whether the tandem tray side
fence is closed or not.
75
S28 Side Fence
Positioning
Informs the CPU when the tandem
tray side fences are open.
74
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