Konica Minolta bizhub PRO 1050 Service Manual page 622

Field Service Ver3.0 Nov.2006
Classification Code
Fan SC32-33 The rotation of the paper feed
abnor-
mality
SC32-34 The blowout of a fuse for the
SC32-35 The rotation of the paper feed
Causes
assist fan /Fr1 (FM41) is checked,
and the 24V power source is also
checked.
An abnormal condition occurs
with the FM41 EM signal a speci-
fied period of time after FM41 is
turned ON. This abnormal condi-
tion recurs even a specified period
of time after FM41 is turned OFF
and then turned ON, and an error
detection signal (24V cut off) is
detected.
paper feed assist fan /Fr1 (FM41)
in the printer control board (PRCB)
is checked.
An abnormal condition occurs
with the FM41 EM signal a speci-
fied period of time after FM41 is
turned ON. This abnormal condi-
tion recurs even a specified period
of time after FM41 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 /Fr1 (FM41) is checked.
An abnormal condition occurs
with the FM41 EM signal a speci-
fied period of time after FM41 is
turned ON. This abnormal condi-
tion recurs even a specified period
of time after FM41 is turned OFF
and then turned ON, and an error
detection signal (24V cut off/blow-
out of a fuse) is not detected.
14. MALFUNCTION CODE
Resulting Estimated abnormal parts
operation
The main body DC power supply /2 (DCPS/
stops immediately 2)
to turn OFF the
RL1 (main).
Paper feed assist fan /Fr1
(FM41)
PF drive board (PFUDB)
Paper feed assist fan /Fr1
(FM41)
PF drive board (PFUDB)
587