Dvc Unit Adjustments - Panasonic AG-DV2500P Service Manual

3.2

DVC UNIT ADJUSTMENTS

Preparation : Connect the Rewrite board (VFK1846) to
CN4004 on the Main board. Connect it in the ori-
entation shown in Fig. 3.2, so that the test point
surface (component mounting surface) faces to-
ward the rear.
NOTE : DVC UNIT ADJUSTMENTS can be completed if
NTSC mode is performed.
Set the NTSC/PAL switch of the rear panel to NTSC.
Measuring
No. Item instruments &
Input signals
1 PB switching Alignment tape,
point adjust- VFK1842
ment
color bar
recorded section
HID (TP5)
a
SPA (TP6)
ENV OUT
(TP9)
a, b : 126µ sec ±10µ sec
Fig. 3.2.1(1)
3-4
Measuring point
Mode Adjustment parts (
Adjustment level (
• PLAY TP6 (SPA)
• ADJUST TP9 (ENV OUT)
MENU, 100. TRIG: TP5 (HID)
PB SW GND: TP1 (GND)
POINT [Rewrite board]
Auto adjustment
a and b = 126 µ sec
10 µ sec
b
Fig. 3.2 Rewrite board connection method
( )
) Adjustment procedure
)
(1)Select ADJUST MENU No. 100, "PB SW
POINT".
(2)Playback the alignment tape. Confirm that the
compatibility adjustment has been performed
and the FM waveform at TP9 (ENV OUT) is flat
and stable.
(3)Press the [ SET ] button to cause the *
marking to blink. The PB switching point will
be adjusted automatically.
REWRITE board