Read Panasonic WV-CS950 / WV-CS954E Service Manual online
2. Data Multiplex/De-Multiplex circuit
All incoming/outgoing data or signals of the camera should pass the Slip Ring.
However, the Slip Ring has a limited number of signal paths so that the data
and signals should be multiplexed. Once they are multiplexed, they must be
de-multiplexed. The IC37 is used for this purpose.
The IC1 (CPU) on the Digital Board sends out RS485TxD from pin29.
The RS485TxD signal includes RS485 and 2 Alarm Output signals.
The RS485TxD signal enters to pin6 of IC18 on the Servo Board via
CN4,pin11 (Digital Board)
Æ CN1, pin14 (Servo Board).
The RS485TxD is output from pin8 of IC18 then appeared at pin2 of CN3
named as DOUT. The DOUT signal will be transferred to the Communication
board through the Slip Ring.
The signal at CN3, pin1 is a multiplexed signal named as DIN from
Communication Board via Slip Ring. This signla includes RS485, 4 alarm
inputs, Dip switch informaiton and Line Pulse (LP).
This signal (DIN) enters to pin4,6,8 of IC37.
The RS485RxD signal is output from IC37 pin2,pin20. The RS485RxD
signal includes RS485 signal, Alarm input signals and the Dip switchi
information. The RS485RxD signal is supplied to CN1, pin15.
The LP signal is made by IC35, IC36 and IC34. Then PL signal is output from
pin4, IC34 and is supplied to CN1,pin15..
The RS485RxD signal is supplied to IC1, pin30 via CN1,pin15
ÆCN4 pin10.
The LP signal is supplied to IC1, pin18 via CN1,pin12
Æ CN4,pin13.
3. Power Regulator
There are 2 power switching regulators on the Servo Board, IC12 and IC16.
The IC12 generates the DC power for the Pan and Tilt Motors.
The IC16 generates the DC power for the whole camera circuits.
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