Reference Data - Hitachi DZ-GX20A Service Manual

Adjustment > Creating Reference Data
6-1-2 Power Supply and Materials for Creating Reference Data
1) DVD video camera/recorder that is the same model as the one to be adjusted and whose camera
block is operating normally.
Note:
It is recommended that you use a brand-new unit of the same model when creating the reference
data. If such a unit is not available, use the same model of the DVD video camera/recorder that is
received from customer for repairing fault in disc drive that is other than in the camera block,
and one where there is no problem in recording of camera image and the zoom is operating
normally.
2) 3100 K light box (maintenance is necessary)
3) Color monitor (color TV with AV input jacks)
4) DC power supply for DSP-R jig (5 V/1 A)
6-1-3 Connections when Creating Reference Data
Connect the DVD video camera/recorder (for creating reference data), jigs and test equipment as
shown in Fig. 6-1-1.
Caution
It is very dangerous to perform any work with the DVD video camera/recorder disassembled, since the
DVD video camera/recorder has a laser-emitting block and high-voltage circuits: Do not remove any
parts other than the adjustment cover.
(1) Setting of light box
1) Use a light box whose color temperature is controlled with no flickering: Using an inappropriate
light box will interference with work.
(2) Setting and disassembly of DVD video camera/recorder
1) Open the LCD monitor and insert a fine-tipped flat-bladed screwdriver into the groove in
adjustment cover, and remove the cover from L case in the direction of the arrow: Be very careful
not to scratch the cover or L case with screwdriver.
2) Set the light box 30-50 cm away from DVD video camera/recorder, and eliminate any effects from
surrounding light, except where such designation is given.
3) Set the lens surface of DVD video camera/recorder in parallel with the surface of light box as far
as possible, and adjust the focus.
4) Use a small tripod to fix the DVD video camera/recorder, making certain it does not move during
creation of reference data.
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