Sony XDCAM PDW-HD1500, Руководство по обслуживанию

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PDW-HD1500/V1 (E)
Seek motor
The seek motor drives the entire optical unit so that the track to be recorded or played back is kept within the object lens
driving range.
ND filter
The transmission factor of the ND filter is selectable to reduce the laser noise that occurs when the read power light is
emitted for the single layer disc.
Spindle motor
The FG generated by the spindle motor is amplified and shaped on the SE-851 board, and is then input into the SV DSP
(IC400, IC1400) on the DR-601 board.
The SV DSP compares the FG frequency with the target frequency, and then controls the spindle motor via the driver
IC500.
System Control
The SY CPU (IC600) on the DR-601 board performs system control. It controls ATA interface, Data Manager, RF-related
ICs, servo ICs, and loader. It also carries out interlocking control, maintenance and error log management of each device
including the optical block.
Firmware programs of the SY CPU and DSP as well as sources of each PLD are stored in the flash memory (IC602), and
the SY CPU loads them to each device when the power is turned on.
The BDC (IC300, IC1300) and SV DSP (IC400, IC1400) are controlled by the parallel CPU bus, while RF-related ICs are
controlled by the serial port through SYS PE (IC700).
Adjustment values and hours meter data are stored in the EEPROM (IC4/SE-850 board).