Controlling The Developing Bias - Canon GP215 Service Manual

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3. OPERATIONS AND TIMING

D. Controlling the Developing Bias

Figure 3-506 shows the circuit used to control the developing bias of the composite power supply PCB,

and the circuit has the following functions:

• Turning ON and OFF the AC component of the developing bias.

• Turning ON and OFF the DC component of the developing bias.

• Controlling the DC component of the developing bias to a specific voltage.

Composite power supply PCB

DC controller PCB

Figure 3-506

Developing AC

drive circuit

CANON GP215/200 REV.0 JULY 1996 PRINTED IN JAPAN (IMPRIME AU JAPON)

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