code sc42-16_ sc42-17_ sc42-18 bizhub pro 920
TRANSCRIPT
bizh
ub P
RO
920
13. MALFUNCTION CODE
479
Field Service Ver3.0 May.2006
Mai
n bo
dy Fan
abnor-
mality
The main body
stops immedi-
ately to turn OFF
the main relay
(RL1).
SC42-16 The rotation of the polygon cool-
ing fan (FM9) is checked and the
24V power source is also
checked.
An abnormal condition occurs
with the FM9 EM signal a speci-
�ed period of time after FM9 turns
ON. This abnormal condition
recurs even a speci�ed period of
time after FM9 is turned OFF and
then turned ON, and an error
detection signal (24V cut o�) is
detected.
DC power supply /2
(DCPS2)
AC drive board (ACDB)
Polygon cooling fan (FM9)
Wiring harness broken
Loose connection
SC42-17 The blowout of ICP for the poly-
gon cooling fan (FM9) in the AC
drive board (ACDB) is checked.
An abnormal condition occurs
with the FM9 EM signal a speci-
�ed period of time after FM9 turns
ON. This abnormal condition
recurs even a speci�ed period of
time after FM9 is turned OFF and
then turned ON, and an error
detection signal (blowout of ICP)
is detected.
SC42-18 The rotation of the polygon cool-
ing fan (FM9) is checked.
An abnormal condition occurs
with the FM9 EM signal a speci-
�ed period of time after FM9 turns
ON. This abnormal condition
recurs even a speci�ed period of
time after FM9 is turned OFF and
then turned ON, and an error
detection signal (24V cut o�/
blowout of ICP) is not detected.
Classi�cation Code Causes Resulting
operation
Estimated abnormal parts
14. PARTS LAYOUT DRAWING
528
Field Service Ver2.0 Aug.2005
bizh
ub P
RO
920
D. Main body left side
[1] DC power supply /2 (DCPS2)
[1]
57gaf5c031na
14. PARTS LAYOUT DRAWING
526
Field Service Ver2.0 Aug.2005bi
zhub
PR
O 9
2014.1.3 Boards and others
A. Main body rear side
)BDCA( draob evird CA]3[
57gaf5c028na
[3]
14. PARTS LAYOUT DRAWING
518
Field Service Ver2.0 Aug.2005
bizh
ub P
RO
920
D. Write section
)9MF( naf gnilooc nogyloP]2[
57gaf5c017na
[2]