Konica Minolta bizhub PRO 1050 Service Manual page 648

Field Service Ver3.0 Nov.2006
Classification Code
Power SC53-02 The 24V power source for the total
abnor-
mality
SC53-03 The blowout of a fuse for the total
SC53-04 The 24V power source for the key
SC53-05 The blowout of a fuse for the key
SC53-06 The blowout of a 12V fuse for the
SC53-07 The blowout of a 5V fuse for the
SC53-08 The 12V power source in the
Causes
counter (CNT1) is checked. When
CNT1 is turned ON from OFF, an
error detection signal (blowout of a
fuse/24V cut off) is detected.
counter (CNT1) in the AC drive
board (ACDB) is checked. When
CNT1 is turned ON from OFF, an
error detection signal (blowout of a
fuse) is detected. However, an
error detection signal (24V cut off)
is not detected.
counter (CNT2) is checked. When
CNT2 is turned ON from OFF, an
error detection signal (blowout of a
fuse/24V cut off) is detected.
counter (CNT2) in the AC drive
board (ACDB) is checked. When
CNT2 is turned ON from OFF, an
error detection signal (blowout of a
fuse) is detected. However, an
error detection signal (24V cut off)
is not detected.
AC drive board (ACDB) is
checked. In the serial initial com-
munication, a signal of the blow-
out of a 12V fuse (AC drive) is
detected.
AC drive board (ACDB) is
checked. In the serial initial com-
munication, a signal of the blow-
out of a 5V fuse (AC drive) is
detected.
printer control board (PRCB) is
checked. An error detection signal
of the 12V in PRCB is 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).
Main relay (RL1)
Total counter (CNT1)
AC drive board (ACDB)
DC power supply /2 (DCPS/
2)
Key counter (CNT2)
AC drive board (ACDB)
DC power supply /1 (DCPS/
1)
Printer control board (PRCB)
613