19
DVX-100
SECTION 5
ELECTRICAL ADJUSTMENTS
Preparation
• Use DVD-ROM disc for test as follows.
NTSC:
HLX-504 (J-6090-088-A) (single layer)
HLX-505 (J-6090-089-A) (dual layer)
PAL:
HLX-506 (J-6090-077-A) (single layer)
HLX-507 (J-6090-078-A) (dual layer)
• Before perform the adjustments, connect the FM modulator.
Video Frequency Adjustment
Connection:
Procedure:
1. Connect a frequency counter to TP (27MHz) and GND on the
MPEG board.
2. Adjust CT501 on the MPEG board so that the frequency
counter reads 27 MHz
±
0.1 kHz.
MPEG board
TP (27MHz)
+
–
frequency counter
Video Output Level Adjustment
Connection:
Procedure:
1. Connect an oscilloscope to CS151 pin
1
(VIDEO OUTPUT
REAR) and pin
3
(GND) on the MPEG board.
2. Playback the color bars (100%) of the test disc.
3. Adjust SVR181 on the MPEG board so that the waveform level
of the oscilloscope is 1.0
±
0.1 Vp-p.
MPEG board
CS151
1
(VIDEO OUT REAR)
CS151
3
(GND)
+
–
oscilloscope
1.0
±
0.1 Vp-p
Adjustment Location:
SVR181
Video Output Level
Adjustment
CT501
Video Frequency
Adjustment
– MPEG BOARD (Component Side) –
CS151
TP (27MHz )
– MPEG BOARD (Conductor Side) –
6
1
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