Description Of Operation; Description Of Structure - Hitachi DZ-HS303A Service Manual

Description of Operation

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3-1 Description of Structure

The DZ-HS303A and DZ-HS300A DVD video camera/recorders are produced with a one-inch HDD
attached to the existing DZ-GX3300A and DZ-BX37A.
Therefore, the confi guration and shapes of their structural components/circuit boards closely
resemble those of DZ-GX3300A and DZ-BX37A.
(1) Difference in structure from DZ-GX3300A/BX37A
R case: Since a HDD is mounted inside the cover of disc insertion block, the shape of the cover is
different.
(2) Major circuit boards and units
The DZ-HS303A/HS300A include the following circuit boards and units:
(a) DVD drive unit (DRG circuit board):
The DRG circuit board in unit incorporates the DVD drive circuit and the power supply
circuit (except for HDD power supply circuit) of the entire DVD video camera/recorder.
(b) Lens unit
(c) EVF unit
(d) LCD unit (LCD circuit board):
The LCD circuit board in unit incorporates the LCD monitor drive and backlight drive circuits.
(e) AVJ-H/L circuit board:
Incorporates the AV output, PC connection and external microphone terminals.
H is for DZ-HS303A and L for DZ-HS300A.
(f) FRT-H/L circuit board:
Incorporates the white balance (WB) sensor, remote infrared receiver (IR) sensor, etc.
The FRT-H circuit board in DZ-HS303A also has a fl ash circuit.
H is for DZ-HS303A and L for DZ-HS300A.
(g) GSL-3M/L circuit board:
This circuit board connects the CCD image sensor to MAN circuit board. It incorporates an
EIS sensor, CCD drive IC, etc.
3M is for DZ-HS303A and L for DZ-HS300A.
(h) LMF-H/L circuit board:
This circuit board connects the SDL circuit board (incorporating a card slot) in L case to MAN
circuit board.
H is for DZ-HS303A and L for DZ-HS300A.
(i) MAN circuit board:
Incorporates the circuits that control the entire DVD video camera/recorder, the video/audio
signal processing circuit and HDD power supply circuit.
(j) SHE-H circuit board:
This circuit board connects the accessory shoe control/power supply terminal to MAN circuit board.
The SHE-H circuit board is mounted only in the DZ-HS303A whose accessory shoe has a control/
power supply terminal.
(k) HDD unit
(l) HDF circuit board:
This circuit board connects the MAN circuit board to HDD unit.
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