Drum/Separation Claw Bias Control; Developing Assembly; Controlling The Developing Assembly Drive; Controlling The Developing Bias - Canon imageRUNNER 5065 series Service Manual

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collecting toner counter; when its reading reaches '250,000', the machine will issue an alarm on the User screen.
Dispose of the collecting toner, and reset the error code.
MEMO:
The collecting toner bottle can hold toner good for a maximum of 500,000 prints. The machine will indicate a collecting toner bottle full alarm when the counter
reading reaches '250,000'.

7.6.3 Drum/Separation Claw Bias Control

iR5065 / iR 5055 / iR5075 / / /
Since the separation claw contacts the drum, toner caught by the separation claw can fall in the feeder path as the machine is getting aged.
Such events can cause the soiled back or faulty images.
As a countermeasure, the machine supplies the AC bias voltage (Vpp430V) to the separation claw, which generates vibration to prevent the toner from accumulating
in the separation claw.
DC-CON

7.7 Developing Assembly

7.7.1 Controlling the Developing Assembly Drive

iR5065 / iR 5055 / iR5075 / / /
The following shows the construction of the developing assembly drive control system:
The following signal is associated with the developing assembly control mechanism:
[1] Developing clutch drive signal; when '0', the drive of the main motor (M1) is transmitted to the developing assembly.

7.7.2 Controlling the Developing Bias

iR5065 / iR 5055 / iR5075 / / /
The following items are associated with the developing bias control system:
[1] Controlling the DC bias constant voltage
[2] Controlling the AC bias constant voltage
Separation
Claw AC
HVT
Bias PCB
F-7-22
24V
DEV_CL_ON* [1]
DRUM_M_FG
DRUM_M_ON
M1
5V
0V
Developing clutch
F-7-23
Separation
Claw
CL1
Chapter 7
0015-9606
0015-4499
0015-4500
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