Master Eject Error Detection - Ricoh LDD280 Service Manual

ERROR DETECTION

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
Still off after 8 seconds ⇒ Jam
HP Sensor
Limit Position Sensor
Pressure Plate Motor
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)
C262/C265
Master Eject Start Timing
Eject Process
Master Eject Jam
The master eject sensor does
not turn on during this period.
Drum Master Box Direction
Eject
HP
Position
Does not reach here after 6
seconds
Drum Direction
Compressing Position
(Stays for 2 seconds)
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)
6-132
(Stays ON)
(Stays OFF)
Master Eject Sensor stays on
⇒ Jam
Returned to HP
SM