Canon
imageRUNNER ADVANCE DX C7700 Series Service Guide
imageRUNNER ADVANCE DX C7700 Series Service Guide
April 2022
Revision 4
Page 78
R. Periodic Maintenance
Some parts of the machine must be checked and/or replaced on a periodic
basis to ensure a specific level of machine performance. These parts are likely
to affect the performance once they fail even in the absence of external change
or damage. Whenever possible, plan their replacement so that it will coincide
with a scheduled service visit.
Note:
All periodic maintenance shown in the below table is for reference
purposes only and are subject to change without notice. Refer to the Service
Manual for additional information.
Table 43 – Main Unit Periodic Maintenance Items
Main Unit Periodic Maintenance
Part Name
Estimated Interval
Remarks
Developing Assembly Cover (Color) When Photosensitive Drum Unit
(Color) is replaced
Clean
Developing Assembly Cover (Black)
Clean
Pre-fixing Feed Belt
When Secondary Transfer Outer
Roller is replaced
Clean
When Needed
Post-secondary Transfer Sensor
Clean
Registration Sensor
Clean
Paper Width Sensor
Clean
ITB Drive Roller
When ITB/Secondary Transfer
Inner Roller is replaced
Clean
ITB Steering Roller
Clean
Post Upper Duct
When Pre-transfer Charging
Wire is replaced
Clean
Shield Plate (Primary Charging
Assembly)
When the Primary Charging
Wire is replaced
Clean
Shield Plate (Post Charging
Assembly)
When Pre-transfer Charging
Wire is replaced
Clean
Developing Assembly Lower Toner
Receptacle
When Photosensitive Drum Unit
(Black) is replaced
Clean
Catch Sheet
When the Photosensitive Drum
Unit (Color) is replaced
Clean
Drum Heater Sliding Assembly
When Photosensitive Drum Unit
(Black) is replaced
Clean/
Lubricate
IH Unit
When the Fixing Film is replaced
Clean
Fixing Inlet Guide
Clean
When Needed
Feed Guide
When Secondary Transfer Outer
Roller is replaced
Clean
When Needed
Feed Roller/Roller
Clean
When Needed
Leakage Breaker
Once or twice / year
Inspect
61 Value is based on LTR sized paper. Estimated average values in the field, based on data from
supplier. Data is subject to change depending upon many factors including, without limitation,
monthly copy volume, environment, type of image printed and customer handling of the equipment.
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