Sony HDC-P1 Maintenance Manual page 17

AT-163APT Board
The AT-163APT board consists of a microcomputer AT CPU (IC109) for system control and a peripheral
circuit. The EEPROM (IC403) on this board retains the main program, and the FRAM (IC133) retains the
camera control data. Furthermore, this board also mounts a lens interface circuit and an auto-iris control
circuit.
IF-1129 Board
The IF-1129 board is provided with a microcomputer IF CPU (IC205) that has a function equivalent to
the CCU to make system settings. The IF FPGA (IC400) switches system connection. This board also
performs command communication with the RCP and MSU. In addition, the LAN controller in the IF
CPU allows LAN connection.
MB-1158 Board
The MB-1158 board is used for connection between boards.
CN-3282 Board
The CN-3282 board is provided with a lens connection connector and a front tally lamp.
CN-3283 Board
The CN-3283 board is provided with a DC IN connector.
SW-1485 Board
The SW-1485 board is an external interface board.
RE-268PT Board
The RE-268PT board converts the input power from the DC IN connector to various output voltages.
The activation/shutdown voltages of the DC power from the DC IN connector are always monitored by
the input protection IC (IC101). The DC power voltages are converted by the power ICs (IC301, IC351,
IC381, IC401, IC451, IC501, IC601), and are then output from CN101 as power voltages.
IC101 performs output protection processing to shut down output of all systems if there is an output short
circuit of any system or there is no output for some reason.
IC202 and IC203 convert the fan output control signal, and IC201 allows variable voltage output to the
fan.
When the power OFF switch signal is input to the D-sub connector connected to the SW-1485 board, the
RE-268PT board outputs are forcibly shut down.
1-9 (E)
HDC-P1