Sony PXW-X500, Руководство по обслуживанию

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Power voltages supply circuit (DC/DC converter, UNREG)
There are 27 voltages that are classified into to following groups.
• Step-down voltages (+5V, +3.3V, +2.5V, +1.8V, +7V, +6V, +1.5V, +1.2V, +12V, etc.)
• Step-up voltages (+16V, +24V)
• Negative voltages (-5V, -8.5V)
• UNREG voltages (LENS, VF, DC-OUT, REMORT, OTHER)
Each voltage is activated and deactivated according to the power sequence control by the power control microcomputer.
Voltage short-circuit protection
The output voltage and output current of each voltage are monitored. When an abnormal output voltage or current is
detected, the camera unit is shut down. The protection circuit is not automatically reset even after short-circuit is cleared.
Therefore, power must be turned off and on again.
1-2-8. Wireless Block
GPS
Position and time information is acquired from the satellite through the antenna on the GPS module (GP-1019 board).
This information is transmitted to the CN-3723 and the HN-415 boards, then to the DPR-362 board through the fine-
wire coaxial cable, and then to the application processor EMMA (IC4200).
• GPS module (GP-1019 board)
The GPS module (GP-1019 board) acquires position and time information and transmits it to the DPR-362 board
through the CN-3723 and HN-415 boards.
• CN-3723 board
GPS signals from the GPS module (GP-1019 board) are sent through the relay CN-3723 board to the connector
(CN51).
• HN-415 board
Signals from the CN-3723 board are sent from the connector (CN4) to the connector (CN0400) on the DPR-362
board through the fine-wire coaxial harness.
• DPR-362 board
The following signals are sent from the application processor EMMA (IC4200) to the connector (CN0400).
• Serial communication (with GPS) signals
• GPS ON/OFF signal
• GPS RESET signal
Wi-Fi
• DPR-362 board
The USB Host signal and the reset signal of the application processor EMMA (IC4200) are sent through the
connector (CN2303) to the WIFI MODULE (WM board) to communicate between EMMA and WM.
SDI output signals from the GMON (IC2301) are sent through the connector (CN2303) to the WIFI MODULE
(WM board) to be used for proxy recording. The WIFI MODULE (WM board) power is controlled with the power
ON signal connected to the power microcomputer Darwin (IC5002) through the connector (CN2303).
• CN-3722 board (Wi-Fi USB connector)
The Wi-Fi dongle of the Wi-Fi USB connector (CN003) is controlled by the WM board through CN001 and
transmits the proxy data in the SD memory (CN002/SD-58 board) managed by the WIFI MODULE (WM board).
• SD-58 board (Proxy SD card slot)
The SD memory in the SD card slot (CN002) is controlled by the WIFI MODULE (WM board) through the
connector (CN001). Proxy data filed by the WIFI MODULE (WM board) is recorded.
PXW-X500
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