Canon iR C3200 Series Service Manual page 807

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16.3.2.4.22 Fogging with BK cartridge that has been used for a certain period of time
[ Verified by Canon Inc. ]
Field Remedy
Ever since DCON Ver.10.02 (DCON software which is to be installed simultaneously with System Ver.10.01),
the service mode described below has been newly added in order to ease fogging which might occur with the
BK cartridge that has been used for a certain period of time.
This service mode switches the amount of toner in the BK developing assembly whose cartridge has been used
for a certain period of time. If fogging occurs under such environment, upgrade DCON to Ver.10.02 and later.
Service mode (level2) [COPIER> Option> BODY>BKTC-DWN]
0: The amount of toner in the developing assembly: small [Factory default/A setting value after RAM is cleared:
0]
1: The amount of toner in the developing assembly: large
16.3.2.4.23 Adjustments to be executed upon occurrence of fogging (Addition of service mode
items)
[ Verified by Canon Inc. ]
Field Remedy
The service mode items below have newly been added to DCON Ver.10.02 (DCON software which is to be
installed simultaneously with System Ver.10.01) in order to ease fogging.
- Adjusting the upper limit of VD:
Service mode (level 2) [COPIER> Adjust> VCONT> VD-LIM-Y/M/C/K]
The smaller the set value is, the lesser the fogging becomes.
- Adjusting the amount of toner replenishment:
Service mode (level 2) [COPIER> Adjust> DENS> T-SPLY-Y/M/C/K]
The smaller the set value is, the lesser the fogging becomes.
- Enables to switch a bias of the lower auxiliary brush under low humidity environment (-800V to -850V):
Service mode (level2) [COPIER> Option> BODY>LSUB-DWY/DWM/DWC]
- Enables to change the toner amount in the developing ass'y which has been used for a certain period of time:
Service mode (level2) [COPIER> Option> BODY>BKTC-DWN]
16.3.2.4.24 Fogging during continuous duplex copying or printing
[ Verified by Canon Inc. ]
Field Remedy
During continuous duplex-copying or -printing the image in low density, it is likely to be fogging. This
symptom has been corrected with System Ver.10.01. So, if this happens, upgrade the system to Ver.10.01 and
later.
Chapter 16
0004-9776
0004-9782
0004-9813
16-33

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