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30 November, 1999
Bias Control Circuit
Toner Application
Roller
D e v e l o p m e n t
Roller
Transfer Roller
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
Out
Toner Application Roller
Development Roller
B I A S P W M
B I A S C T L
Power
Transfer H
Pack
Transfer L
BIASCTL
BIASPWM
2-13
11-8
11-7
GEPC
1 1 - 1 0
11-9
FCU
Low
High
On
On
- 650 V
0 V
- 400 V
+ 250 V
PRINTING
FCIP2
H545D509.WMF
Low
High
Off
Off
Off
Off
Off
Off
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