Ricoh Gestetner 5428C, Service Manual

Page: 138 / 152

JAM DETECTION 31 October 2001
6-48
6.10.5 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.
Turning on the main switch/end of paper feed
Jam check timing: Just after the main switch is turned on, or when paper feed has
finished.
Check: If the registration sensor detects paper, the A jam location indicator lights.
6.10.6 PAPER DELIVERY JAM (C JAM LOCATION INDICATOR)
Paper delivery
Jam check timing: When printing.
Check: When the paper exit timing sensor turns on (drum at paper exit timing
position), if the paper exit sensor detects paper, the C jam location
indicator lights.
Drum: 360 degrees = 1020 pulses
Feed start timing sensor
Registration sensor
Paper feed motor
Feed delay
Check
310 pluses
C238D535.WMF
Paper exit sensor
Paper exit timing sensor
Check
C238D537.WMF