Ricoh MV310 Service Manual page 65

May 22nd, 1995
Bias Control Circuit
Toner Application
Roller
Development
Roller
Transfer Roller
The cpu controls the voltages to the toner application and development roll-
ers using the Bias 0 and Bias 1 signals as shown in the following table.
Bias 0
In
Bias 1
Toner Application
Out Roller
Development Roller
Bias 0
21-6
Bias 1
21-7
Power
Transfer 0
Pack
21-4
Transfer 1
21-5
Low
Low
- 700 V
-400 V
DETAILED SECTION DESCRIPTIONS
IC4
1-44
Power
1-45
Pack
1-83
Driver
1-87
FDU
High Low
Low High
- 50 V Off
+ 250 V -400 V
2-37
PRINTING
FCE
CPU
H521D652.wmf
High
High
Off
Off