Solution; Initial Check Items; Transport Section Misfeed - Konica Minolta bizhub C450 Service Manual

Field Service Ver. 1.0 Mar. 2005
7.3

Solution

7.3.1

Initial check items

• When a paper misfeed occurs, first perform the following initial check items.
Does paper meet product specifications?
Is the paper curled, wavy, or damp?
Is a foreign object present along the paper path, or is the
paper path deformed or worn?
Are the Paper Separator Fingers dirty, deformed, or
worn?
Are rolls/rollers dirty, deformed, or worn?
Are the Edge Guide and Trailing Edge Stop at the cor-
rect position to accommodate the paper?
Are the actuators operating correctly?
7.3.2

Transport section misfeed

A. Detection timing
Type
The Entrance Sensor (PI1-FN) does not detect paper even after the lapse of
approx. 1.5 sec. after the Entrance Sensor (PI1-FN) has received the paper exit
Transport section
signal from the main unit.
misfeed detection
Paper is not removed from the Entrance Sensor (PI1-FN) even after the lapse of
approx. 2 sec. after the Entrance Sensor (PI1-FN) has detected paper edge.
B. Action
Entrance Sensor (PI1-FN)
Step
1 Initial check items
2 PI1-FN I/O, sensor check
3 PWB-A FN replacement
Check item
Relevant electrical parts
Action
Action
Replace paper.
Replace paper.
Instruct the user on the correct paper storage
procedures.
Clean the paper path and replace if neces-
sary.
Clean or replace the defective Paper Separa-
tor Finger.
Clean or replace the defective roll/roller.
Set as necessary.
Correct or replace the defective actuator.
Description
Finisher Control Board (PWB-A FN)
WIRING DIAGRAM
Control signal
—
PWB-A FN CN16A FN-11
—
7. Jam Display
Location
(Electrical compo-
nents)
—
FS-603 B-8
—
53