Konica Minolta bizhub PRO 1050 Service Manual page 634

Field Service Ver3.0 Nov.2006
Classification Code
Fan SC42-02 The blowout of a fuse for the
abnor-
mality
SC42-03 The rotation of the scanner cool-
SC42-04 The rotation of the suction fan /1
Causes
scanner cooling fan (FM19) in the
scanner drive board (SDB) is
checked. An abnormal condition
occurs with the FM19 EM signal a
specified period of time after
FM19 turns ON. This abnormal
condition recurs even a specified
period of time after FM19 is turned
OFF and then turned ON, and an
error detection signal (blowout of a
fuse) is detected. At this time, an
error detection signal (24V cut off)
is not detected.
ing fan (FM19) is checked. An
abnormal condition occurs with
the FM19 EM signal a specified
period of time after FM19 turns
ON. This abnormal condition
recurs even a specified period of
time after FM19 is turned OFF and
then turned ON, and an error
detection signal (24V cut off/blow-
out of a fuse) is not detected.
(FM6) is checked, and 24V power
source is also checked. An abnor-
mal condition occurs with the FM6
EM signal a specified period of
time after FM6 turns ON. This
abnormal condition recurs even a
specified period of time after FM6
is turned OFF and then turned
ON, and an error detection signal
(24V cut off) is detected.
14. MALFUNCTION CODE
Resulting Estimated abnormal parts
operation
The main body Scanner drive board (SDB)
stops immediately Scanner cooling fan (FM19)
to turn OFF the
RL1 (main).
Scanner cooling fan (FM19)
DC power supply /2 (DCPS/
2)
599