Kyocera C5020N - FS Color LED Printer, Руководство по обслуживанию

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2F3/2F4
2-1-25
The primary transfer roller bias is triggered by a serial data which is generated by the engine controller PWB and derived
from the bias high voltage PWB. The engine controller PWB converts current and voltage into serial data and applies it to
the bias high voltage PWB. The bias high voltage PWB then uses D/A converter (IC501) and revert it into analog voltage.
The analog voltage is applied to the high voltage output circuit which in turn applies the secondary transfer roller with the
bias accordingly.
Figure 2-1-34 Secondary transfer unit block diagram
6
7
8
HVBDATD
HVBCLKD
HVBLATD
Bias high voltage PWB
Secondary
transfer
roller
Secondary
transfer
roller bias
-40
m
A
YC5-6
YC5-7
YC5-8
Engine controller PWB
High
voltage
output
circuit
D/A
converter
(IC501)