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Canon
Service Bulletin
COPIER
Issued by Canon Europa N.V.
Location:
DOCUMENT TRAY ASSEMBLY
Subject:
Frequent Appearance of Message Prompting to Clean ADF Scanning Glass
Detail:
<Symptom>
The following message is displayed on the LCD of the host machine in order to prompt users to clean the ADF
scanning glass, although there is no dust on the glass.
Message:
Originals may not be scanned clearly (streaks may appear). Clean the thin glass strip as shown in the illustration
with a damp, well wrung-out cloth.
<Cause>
The starting position of the image scanning in the main scanning direction when using ADF (stream reading) is
determined by the position of the original. The dust detection area is determined with reference to the scanning
starting position. Also, the position of the original is determined by the position of the side guide plates of the
ADF.
If the side guide plates are fixed at a position where the edge of the original comes close to the edge of the platen
roller, the roller edge will come in the dust detection area and finally be detected as dust.
<Factory Measures>
1. RCON software of the host machine is upgraded to Ver.8.01 so that the dust detection area is changed from
301mm to 298mm.
2. The procedure for adjusting the side guide plates of the DF is changed.
Service Work:
When the above symptom occurs, upgrade the Rcon Software of the host machine to Ver.8.01, referring to the
Service Information F2-T01-0M3-10016 (System Software information for iRC6800 series).
When the upgrade still fails to remove the symptom, see the attached procedure below and adjust the horizontal
registration as well.
Model:
DADF-M1
Ref No.:
DF-168
(F3-T01-00X-10014-01)
Date:
25-06-04
