code sc42-16_ sc42-17_ sc42-18 bizhub pro 920

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]