Misfeed At Tray 2 Feed Section - Konica Minolta bizhub C650 Service Manual

15. Jam display
15.3.3

Misfeed at tray 2 feed section

A. Detection timing
Type
Detection of
misfeed at tray 2
feed section
Detection of paper
left in tray 2
Tray 2 feed section
4
image write start
signal permit wait-
ing jam
B. Action
Take-up motor (M22)
Tray 2 paper feed clutch (CL2)
Tray 2 vertical transport sensor (PS12)
Step
1 Initial check items
2 PS12 I/O check, sensor check
3 CL2 operation check
4 M22 operation check
5 Change PFTDB
6 Change PRCB
586
4
• The leading edge of the paper does not turn ON the tray2 vertical transport
sensor (PS12) even after the lapse of a given period of time after the tray2
starts to feed paper.
• Tray 2 vertical transport sensor (PS12) is turned ON when the main power
switch is turned ON, a door or cover is opened and closed, or a misfeed or mal-
function is reset.
• For paper fed from the tray2, the image write start signal permit continues to be
disabled for a predetermined period of time after the timing of the image write
start signal output.
Relevant parts
Action
Field Service Ver. 8.0 Jun. 2008
Description
Paper feed/transport drive board (PFTDB)
Printer control board (PRCB)
WIRING DIAGRAM
Control signal
—
PFTDB CN8BPFTDB-2 (ON)
PFTDB CN8APFTDB-1 (ON)
PFTDB CN5PFTDB-5 to 8
—
—
Location (Electri-
cal component)
—
P-6
P-6
P-3
—
—