Canon dx 8786 image quality defect

[Jocelyn]

hello I have a canon dx8786 which presents an image quality defect after reinstalling the system. the image is too light when printing and copying. can anyone help me to solve this problem. THANKS

[bobburnsreb]

Try:
Run Copier>Function>Install>Stir-K

Make sure Potential Control is set to on Copier>Option>FNC-SW>PO-CNT=1

Run DPC2 Copier>Function>DPC To execute potential control without power cycle of device.

Check Copier>Display>DPOT>VL1-T / VL1-M The M-measured value should be close to the T-target value (voltage in the light Laser.)

VDT / VDM VDM value should be close to VDT value (voltage in the dark Primary charge.)

Good Luck!
?

[Jocelyn]

Copy>Function>Install>Stir-K. does not exist among the elements of the install function

Make sure Potential Control is set to Copier>Option>FNC-SW>PO-CNT=1.yes it is 1

Run DPC2 Copy>Function>DPC To run the potential check without restarting the device.

Check Copier>Display>DPOT>VL1-T = +190V
VL1-M=+186V

The value VDT / VDM VDM =+495V
VDT = +490
printing and photocopyi dataurl903561.png always remain pale
dataurl903561.png

[zoraldinho]

I had a similar problem. I had to replace the hvt.
There are three together on the tray at the back.
If the image on the drum is ok=transfer hvt
If the image is also bright on the drum = developer hvt

[bobburnsreb]

Instead of stir-k try toner-s