Ricoh LDD280 - 6.14.7 MASTER EJECT ERROR DETECTION

ERROR DETECTION
C262/C265 6-132 SM
6.14.7 MASTER EJECT ERROR DETECTION
Error of Master Pick-up from Drum
1st Drum Position
Sensor
2nd Drum Position
Sensor
1st Drum Master
Sensor
Master Eject Sensor
Master Eject and Compression Error
HP Sensor
Limit Position Sensor
Pressure Plate Motor
Master E
j
ect Start Timin
g
Master Eject Jam
The master eject sensor does
not turn on during this period.
Eject Process
(
Sta
y
s ON
)
(
Sta
y
s OFF
)
Master Eject Sensor stays on
⇒ Jam
Still off after 8 seconds ⇒ Jam
Drum Master Box Direction Drum Direction
HP
Eject
Position
Compressing Position
(Stays for 2 seconds)
Returned to HP
Does not reach here after 6
seconds
Check during rotation in the
master box direction
- Check Timing -
When one of the following occurs:
• When Limit Position Sensor turns
on.
• 4.5 seconds passes after motor
turns on (A3 master)
3.5 seconds passes after motor
turns on (A4 master)
Number of HP Sensor On or Off Edges
(First on edge is just after motor starts.)
• 5 times ⇒ Normal
• 4 times ⇒ Master box full
• Less than 4 ⇒ Pressure plate locked
(SC400 lights)