General Description; Overview; Servicing Method - Hitachi DZ-GX20A Service Manual

2

General Description

2-1 Overview

New models DZ-GX20A and DZ-MV780A/MV730A do not require a round DVD holder for disc.
The DZ-GX20A and DZ-MV780A have high-performance CCD image sensors with a total of approx.
2,120,000 pixels and 1,330,000 pixels; both are equipped with a high-performance optical 10-power
zoom.
The DZ-MV730A has a CCD image sensor with a total of 680,000 pixels and an optical 16-power
zoom.

2-1-1 Servicing method

Refer to the following table and perform the designated, appropriate servicing. Any changes that
occur in the service method will be published using service bulletin, etc.
Do not perform any servicing other than that described in this manual.
Information:
The suffixes of circuit board names – "-H", "-L" and "-M" – show the models in which the circuit
boards are used: "-H" is for DZ-GX20A; "-L" for DZ-MV730A; and "-M" for DZ-MV780A.
Parts Name
Disc drive unit
Lens unit
EVF unit
LCD unit
AEL circuit board
AVJ-H/AVJ-L/AVJ-M circuit board
DRF-H/DRF-L/DRF-M circuit board
FRT-H/FRT-L/FRT-M circuit board
GSL-H/GSL-L/GSL-M circuit board
MAN circuit board
SHE-H/SHE-M circuit board
*1: Film type board that connects MAN circuit board and disc drive unit.
Disc drive
unit
Unit replacement. (Which incorporates the DRV and HDL5 circuit
boards.)
Unit replacement.
Unit replacement.
Unit replacement. (Which incorporates the LCD and MR circuit
boards.)
Component replacement: The following components are excluded. If
they are faulty, replace the mounting circuit boards.
CSP ICs
(*1)
Leadless (chip) resistors
Leadless (chip) capacitors
FRT-H/FRT-L/
FRT-M circuit
board
LCD unit
AVJ-H/AVJ-L/
AVJ-M circuit
board
Fig. 2-1-1 Name of the circuit board/unit
Servicing method
GSL-H/GSL-L/
Lens unit
GSL-M circuit
board
AEL
circuit
board
2 - 1
SHE-H/SHE-M
circuit board
EVF unit
DRF-H/DRF-L/
DRF-M circuit
board
MAN
circuit
board