30 November, 1999 PRINTING
2-13
Detailed
Descriptions
Bias Control Circuit
The CPU controls the voltages to the toner application and development rollers
through the power pack controller (GEPC), using the BIASCTL and BIASPWM
signals as shown in the following table.
In BIASCTL Low High Low High
BIASPWM On On Off Off
Out Toner Application Roller - 650 V 0 V Off Off
Development Roller - 400 V + 250 V Off Off
FCIP2
GEPC
11-8
Power
Pack
11-9
BIASPWM
FCU
11-7
11-10
BIASCTL
Transfer H
Transfer L
Toner Application
Roller
Development
Roller
Transfer Roller
H545D509.WMF
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