Misfeed At Tray 3 Vertical Transport Section - Konica Minolta Magicolor 8650 Service Manual

Field Service Ver. 2.0 Nov. 2007
13.3.7

Misfeed at tray 3 vertical transport section

A. Detection timing
Type
• The leading edge of the paper does not turn ON the sensor in front of tim. roller
Detection of
misfeed at vertical
transport section • The paper feed tray 3 vertical transport sensor (PS16) is not unblocked even
Vertical transport • For paper fed from the tray 3, loop forming has not been complete before a
section loop
registration
reversing jam
B. Action
Transport motor (M1)
Paper feed tray 3 vertical transport clutch (CL3)
Paper feed tray 3 vertical transport sensor (PS16)
Sensor in front of tim. roller (PS23)
Step
1 Initial check items
2 PS16 I/O check
3 PS23 I/O check
4 CL3 operation check
5 M1 operation check
6 Change PRCB
Confidential – for internal use only, do not distribute
(PS23) even after the lapse of a given period of time after the paper has
blocked the paper feed tray 3 vertical transport sensor (PS16).
after the lapse of a given period of time after the paper has blocked the PS16.
sheet enters the timing roller because the rise timing of load to perform registra-
tion is earlier than the rise timing of load to form a loop.
Relevant parts
Action
Description
Printer control board (PRCB)
WIRING DIAGRAM
Control signal
—
PRCB CN9PRCB-11 (ON)
PRCB CN1PRCB-3 (ON)
PRCB CN9PRCB-17 (ON)
PRCB CN34PRCB-10 (REM)
PRCB CN34PRCB-13 (LOCK)
—
13. Jam display
Location (Electri-
cal component)
—
D-10
D-18
D-10 to 11
D-22
—
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