Ricoh C249, Service Manual

Page: 206 / 486

JAM DETECTION
C249 6-60 SM
6.9.4 DRUM JAM (B JAM LOCATION INDICATOR)
Wrapping jam
Jam check timing: When printing.
Check : When the drum has turned 80 degrees since the master eject position
sensor turned on (drum reached master eject position), and the paper exit
sensor still doesn’t detect the paper, then the B jam indicator lights.
Check : When the drum has turned 80 degrees since the master eject position
sensor turned on (drum reached master eject position), and the registration
sensor detect the paper, then the A+B jam indicator lights.
6.9.5 PAPER FEED JAM (A JAM LOCATION INDICATOR)
Paper feed
Jam check timing: When the machine starts to feed. (When the feed delay time
has passed since the feed start timing sensor turned on [drum at feed start
position].)
Check: If after the paper feed motor has fed 310 pulses, the re-feeding function
starts. The paper feed motor re-starts, and if the registration sensor doesn’t
detect paper again after 310 pulses, the A jam location indicator lights.
Master eject position
sensor (HP)
Paper exit sensor
80 degrees
Check
C249D068.WMFF
Feed start timing sensor
Registration sensor
Paper feed motor
Feed delay
Check
310 pluses
C249D909.WMFF
Rev. 07/2004