Ricoh FT5034, Service Manual

Page: 59 / 139

9. Bias Voltage
1. Bias Control Signals and Output Voltage (without Temperature Compensation)
NO
CN101-B18
Bias 4
CN101-B19
Bias 3
CN101-A18
Bias 2
CN101-A19
Bias 1
Output
(V)
Notch ADS
1 0 0 0 1 200
2 0 0 1 0 230
3 0 0 1 1 260 3 ~ 6 2.6 ~
4 0 1 0 0 290 2
5 0 1 0 1 320 1,7 2.16 ~ 2.6
6 0 1 1 0 350
7 0 1 1 1 380 1.65 ~ 2.16
8 1 0 0 0 410
9 1 0 0 1 440 ~ 1.65
10 1 0 1 0 500
11 1 0 1 1 500
12 1 1 0 0 530
13 1 1 0 1 560
14 1 1 1 0 590
15 1 1 1 1 620
16 0 0 0 0 0
2. Bias for Sensor Pattern
When the sensor pattern is developed, the ID sensor bias is applied at +470 volts
and stays constant at +260 volts in non image timing.
470 V
260 V
image
non image
ID Sensor Bias
ID Sensor Pattern
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