Canon imageRUNNER ADVANCE 9070 PRO series Service Manual Digest page 195

Alarm Code Title
06 - 0004 Caution alarm for increase of Movement: None
pressure belt torque Cause: The pressure belt torque increased.
Measures: Replace the pressure belt.
33 - 0010 Stream reading fan alarm A failure occurred in the fan at the time of job
completion.
33 - 0022 Read motor cooling fan alarm A failure occurred in the fan during job operation.
33 - 0023 Optical unit (DADF) cooling A failure occurred in the fan during job operation.
fan alarm
33 - 0025 Optical unit (reader) cooling A failure occurred in the fan during job operation.
fan alarm
34 - 0001 Image position correction Movement: None
patch detection alarm 1 Cause:
The detection data of the average value of the image
position correction patch pattern has exceeded the
permitted range.
• Scraches on the ITB
• Failure of the photosensitive drum
• Noise due to contact failure of the ITB guide (The
Measures:
1. Check whether the color image is formed correctly
a. Perform test print in the following condition.
b. Check the following points.
• Check whether the image is formed in the printing
• Check whether an unexpected image is not formed.
• Developing assembly: Check whether dirt is not
• Drum: Check whether dirt is not applied to the drum.
• ITB cleaning unit: Check whether an ITB cleaning
• Check whether there are a lot of scratches or dents
A. movement /B. cause /C. measures
ITB unit is not installed correctly.)
for 4 colors.
COPIER>TEST>PG>TYPE: 5
Output one sheet for each color in the paper of
LTR/A4/A3 size (more than 290mm in a horizontal
scanning direction).
field except a margin. Check whether the image
density is not low.
If a correct image is not formed, check the following
points.
applied to the developing.
Check whether there are no scratches on the drum.
failure has not occurred. (Check whether the
previous image does not remain.)
on the ITB or not.
Based on the checking results and frequency
of occurrence of the alarm, make a judgment of
whether or not to replace the corresponding parts.
Alarm Code Title
34 - 0002 Image position correction Movement: None
patch detection alarm 2 Cause:
The image position correction patch pattern cannot be
detected at all.
• Failure of the patch sensor
• Failure of the shutter
• Image failure
1. 1. Check whether the color image is formed correctly
a. Perform test print in the following condition.
b. Check the following points.
• Check whether the image is formed in the printing
• Check whether an unexpected image is not formed.
• Developing assembly: Check whether dirt is not
• Drum: Check whether dirt is not applied to the drum.
• ITB cleaning unit: Check whether an ITB cleaning
• Check whether there are a lot of scratches or dents
2. Damage or dirt of/on the patch sensor
a. Check whether the shutter of the patch sensor
b. Check whether dirt is not applied to the patch sensor.
c. If the problem is not eliminated even after cleaning,
d. Check whether shorting has occurred to the patch
A. movement /B. cause /C. measures
for 4 colors.
COPIER>TEST>PG>TYPE: 5
Output one sheet for each color in the paper of
LTR/A4/A3 size (more than 290mm in a horizontal
scanning direction).
field except a margin. Check whether the image
density is not low.
If a correct image is not formed, take measures to be
taken for prevention of an image failure. (Check the
developing assembly and drum unit.)
applied to the developing.
Check whether there are no scratches on the drum.
failure has not occurred. (Check whether the
previous image does not remain.)
on the ITB or not.
Based on the checking results and frequency
of occurrence of the alarm, make a judgment of
whether or not to replace the corresponding parts.
operates correctly.
If dirt is applied, clean the sensor surface
with alcohol. After cleaning, execute patch
light intensity correction and base correction
(COPIER>FUNCTION>MISC-P>PT-LPADJ).
replace the registration patch sensor unit.
sensor harness.
If it occurred, replace both of the harness and the DC
controller interface PCB. (It is necessary to replace
the PCB because the DC controller interface PCB
burns when shorting occurs.)
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