Konica Minolta bizhub PRO 1050 Service Manual page 619

14. MALFUNCTION CODE
Classification Code
Fan SC32-24 The rotation of the paper feed
abnor-
mality
SC32-25 The blowout of a fuse for the
SC32-26 The rotation of the paper feed
584
Causes
assist fan /Rr1 (FM21) is checked,
and the 24V power source is also
checked.
An abnormal condition occurs
with the FM21 EM signal a speci-
fied period of time after FM21 is
turned ON. This abnormal condi-
tion recurs even a specified period
of time after FM21 is turned OFF
and then turned ON, and an error
detection signal (24V cut off) is
detected.
paper feed assist fan /Rr1 (FM21)
in the printer control board (PRCB)
is checked.
An abnormal condition occurs
with the FM21 EM signal a speci-
fied period of time after FM21 is
turned ON. This abnormal condi-
tion recurs even a specified period
of time after FM21 is turned OFF
and then turned ON, and an error
detection signal (blowout of a
fuse) is detected with the 24V nor-
mal.
assist fan /Rr1 (FM21) is checked.
An abnormal condition occurs
with the FM21 EM signal a speci-
fied period of time after FM21 is
turned ON. This abnormal condi-
tion recurs even a specified period
of time after FM21 is turned OFF
and then turned ON, and an error
detection signal (24V cut off/blow-
out of a fuse) is not detected.
Field Service Ver3.0 Nov.2006
Resulting Estimated abnormal parts
operation
The main body DC power supply /1 (DCPS/
stops immediately 1)
to turn OFF the
RL1 (main).
Paper feed assist fan /Rr1
(FM21)
Printer control board (PRCB)
Paper feed assist fan /Rr1
(FM21)
Printer control board (PRCB)