Konica Minolta bizhub PRO 1050 Service Manual page 620

Field Service Ver3.0 Nov.2006
Classification Code
Fan SC32-27 The rotation of the paper feed
abnor-
mality
SC32-28 The blowout of a fuse for the
SC32-29 The rotation of the paper feed
Causes
assist fan /Fr2 (FM22) is checked,
and the 24V power source is also
checked.
An abnormal condition occurs
with the FM22 EM signal a speci-
fied period of time after FM22 is
turned ON. This abnormal condi-
tion recurs even a specified period
of time after FM22 is turned OFF
and then turned ON, and an error
detection signal (24V cut off) is
detected.
paper feed assist fan /Fr2 (FM22)
in the printer control board (PRCB)
is checked.
An abnormal condition occurs
with the FM22 EM signal a speci-
fied period of time after FM22 is
turned ON. This abnormal condi-
tion recurs even a specified period
of time after FM22 is turned OFF
and then turned ON, and an error
detection signal (blowout of a
fuse) is detected.
assist fan /Fr2 (FM22) is checked.
An abnormal condition occurs
with the FM22 EM signal a speci-
fied period of time after FM22 is
turned ON. This abnormal condi-
tion recurs even a specified period
of time after FM22 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 /1 (DCPS/
stops immediately 1)
to turn OFF the
RL1 (main).
Paper feed assist fan /Fr2
(FM22)
Printer control board (PRCB)
Paper feed assist fan /Fr2
(FM22)
Printer control board (PRCB)
585