Misfeed At The Image Transfer Section - Konica Minolta bizhub 164 Service Manual

13. JAM DISPLAY
13.3.4

Misfeed at the image transfer section

A. Detection timing
Type
Paper image trans- • The exit sensor (PS5) is not blocked even after the lapse of a given period of
fer section misfeed
detection • The registration sensor (PS1) is not blocked even after the lapse of a given
• The registration sensor (PS1) is blocked before the lapse of a given period of
• While the main motor (M1) is rotating, the machine cannot detect that the paper
Size error detection • When the registration sensor (PS1) detects the paper length in the sub scan-
Detection of paper • The registration sensor (PS1) is unblocked at timing when the power switch is
left in image trans-
fer section
B. Action
Registration sensor (PS1)
Exit sensor (PS5)
Registration clutch (CL1)
Step
1 Initial check items
2 Check the connector between M1-PRCB
CN6 for proper connection and correct as
necessary.
3 Check the M1 connector for proper drive
coupling and correct as necessary.
4 Check the connector between PS1-relay
CN24-PRCB CN9 for proper connection
and correct as necessary.
5 Check the connector between PS5-PRCB
CN4 for proper connection and correct as
necessary.
6 Check the connector between CL1-relay
CN7-PRCB CN9 for proper connection and
correct as necessary.
7 PS1 sensor check
8 PS5 sensor check
9 CL1 operation check
10 M1 operation check
11 Replace PRCB.
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time after the paper has unblocked the registration sensor (PS1).
period of time after the paper has unblocked the PS1.
time after the paper has unblocked the PS1.
continuously unblocks the registration sensor (PS1) for the given period of time
ning direction, the difference between the detected paper length and the paper
length specified on the control panel is
turned ON, the cover is opened and closed, or a paper misfeed or malfunction
is reset.
Relevant electrical components
Operations
Field Service Ver. 2.0 Jun. 2010
Description
±
260 mm or more.
Main motor (M1)
Printer control board (PRCB)
WIRING DIAGRAM
Control signal
-
-
-
-
-
-
PRCB CN9-7 (ON)
PRCB CN4-4 (ON)
PRCB CN9-2(REM)
PRCB CN6-7 (LOCK)
-
Location
(Electrical compo-
nents)
-
-
-
-
-
-
C-11
E-3
C-11
D-9
-