Konica Minolta bizhub 250 Service Manual page 351

6. Jam Display
6.3.3 Turnover Unit/Duplex Unit Transport Section Misfeed
A. Detection Timing
Type
The Switch Back Unit Sensor (PC26) is not blocked even after the set period of
time has elapsed after the Paper Exit Sensor (PC4) is unblocked by the paper.
Turnover Unit/ The Duplex Unit Upper Transport Sensor (PC24) is not blocked even after the set
Duplex Unit period of time has elapsed after the Switch Back Unit Sensor (PC26) is blocked
Transport Section by the paper.
misfeed detection
The Switch Back Unit Sensor (PC26) is not blocked even after the set period of
time has elapsed after the Duplex Unit Upper Transport Sensor (PC24) is blocked
by the paper.
The Switch Back Unit Sensor (PC26) is blocked when the Main Power Switch is
Detection of paper
set to ON, a door or cover is opened and closed, or a misfeed or malfunction is
remaining in the
reset.
Turnover Unit/
The Duplex Unit Upper Transport Sensor (PC24) is blocked when the Main Power
Duplex Unit
Switch is set to ON, a door or cover is opened and closed, or a misfeed or mal-
Transport Section
function is reset.
B. Action
Paper Exit Sensor (PC4)
Switch Back Unit Sensor (PC26)
Duplex Unit Upper Transport Sensor (PC24)
Step
1 Initial checks
2 PC4 sensor check
3 PC26 sensor check
4 PC24 sensor check
5 Replace PWB-A.
14
EDNord - Istedgade 37A - 9000 Aalborg - telefon 96333500
Relevant electrical parts
Mechanical Control Board (PWB-A)
Operations
Field Service Ver. 1.0 Aug. 2005
Description
WIRING DIAGRAM
Control signal
-
PWB-A PJ18A-11 (ON)
PWB-A PJ19A-9 (ON)
PWB-A PJ20A-5 (ON)
-
Location
(Electrical
components)
-
M-12
M-5
M-16
-