JVC GY-DV5000U Service Manual page 64

3.4.4 DVC UNIT ADJUSTMENTS
Preparation : Connect the Rewrite board (CK453800B) to
CN801 on the DBCD board. Connect it in the ori-
entation shown in Fig. 3.4, so that the test point
surface (component mounting surface) faces up-
ward.
Measuring
No. Item instruments &
Input signals
1 PB switching Alignment tape,
point adjust- NTSC : MC-1,
ment PAL
color bar
recorded section
HID (TP5)
a
SPA (TP6)
ENV OUT
(TP9)
a, b : 126µ sec ±10µ sec
3-10
Mode
• PLAY
• ADJUST
: MC-2 MENU, 100.
PB SW
POINT
b
Fig. 3.4 Rewrite board connection method
Measuring point ( * )
Adjustment parts ( - )
Adjustment level ( + )
* TP6 (SPA)
(1) Press the EDIT SEARCH +/– button to select
* TP9 (ENV OUT)
ADJUST MENU No. 100, "PB SW POINT".
TRIG: TP5 (HID) (2) Play the alignment tape. Ensure that the com-
GND: TP1 (GND) patibility adjustment has been performed and
[Rewrite board] the FM waveform at TP9 (ENV OUT) is flat and
- Auto adjustment
stable.
+ a, b = 126 µs sec
(3) Press the SHUTTER dial to cause the * mark-
10 µs sec ing to blink. The PB switching point will be
adjusted automatically.
REWRITE BOARD
Adjustment procedure