Canon imageRUNNER ADVANCE 8105 Series Service Manual page 543

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Adjustment > When replacing parts > Image Formation System > Primary Charging Assembly
When the rear side test print image is dark
MEMO:
•
When the rear side test print image is dark [2], execute step 4 until the density
becomes even. When the density becomes even, execute step 5 and the following.
•
When the adjustment screw is turned clockwise, the Charging Wire goes down and
up (gap between grid and Charging Wire becomes narrow and wide). As a result, the
density of output image becomes light.
Note:
Be sure to adjust the dark side (density of the test print image) to be the light side.
4) Make the resin screws [B] and [D] a full turn clockwise. While referring to the replacement
procedure of the Primary Charging Assembly, install it to the main body, output a test print
and check the image.
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Adjustment > When replacing parts > Image Formation System > Primary Charging Assembly
Note:
Since uneven density might occur, be sure to adjust by turning the 2 adjustment
screws with the same amount.
5) Clean the Charging Wire using the service mode.
(FUNCTION > CLAENING > WIRE-CLN) Time required: Approx. 30 sec.
6) nit of Primary Charging Wire current VL(COPIER>ADJUST>HV-PRI>PRI-GRID)
7) Execute the potential control. (COPIER>FUNCTION>DPC>DPC
8) Execute the density correction using the user mode.
("Settings/Registration" > "Adjustment/Maintenance" > "Adjust Image Quality" > "Correct
Density")
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[2]
[D] [B]
F-5-6 F-5-6
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