Konica Minolta bizhub PRO 920 Service Manual page 533

Field Service Ver2.0 Aug.2005
Classification Code
ADU SC93-01
stand
abnor-
mality
SC93-05
SC93-06
SC95-01
SC95-03
Causes
12V ICP blowout in the ADU drive
board (ADUDB). A -5V ICP blow-
out signal and blowout of a 12V
ICP signal are detected for the
serial initial communication.
24V power source check. At the
start of operation, an error detec-
tion signal (solenoid/blowout of
clutch ICP) is detected, and also
an error detection signal (24V cut
off) is detected.
At the start of operation, an error
detection signal (solenoid/blow-
out of clutch ICP) is detected.
However, an error detection sig-
nal (24V cut off) is not detected.
A specified period of time after
the ADU cooling fan /1 (FM10), /2
(FM11) turns on, the F10/11 sig-
nal gets into an abnormal condi-
tion. This abnormal condition still
recurs a specified period of time
after it is turned ON again after
being turned OFF, and also an
error detection signal (24V cut off)
is detected.
ADU cooling fan /1 (FM10), /2
(FM11) rotation check. A speci-
fied period of time after the FM10,
FM11 turns ON, the FM10/11
signal gets into an abnormal con-
dition. This abnormal condition
still recurs a specified period of
time after it is turned ON again
after being turned OFF, and also
an error detection signal (24V cut
off/blowout of ICP) is not
detected.
13. MALFUNCTION CODE
Resulting Estimated abnormal parts
operation
The main body ADU drive board (ADUDB)
stops immedi- Printer control board
ately to turn OFF (PRCB)
the main relay Loose connection
(RL1).
Each of the solenoids
Each of the clutches
DC power supply /2
(DCPS2)
Loose connection
Wiring harness earth fault
ADU drive board (ADUDB)
DC power supply /2
(DCPS2)
ADU drive board (ADUDB)
ADU cooling fan /1 (FM10)
ADU cooling fan /2 (FM11)
Wiring harness earth fault
Loose connection
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