3-18
1
PB switching
point adjust-
ment
Alignment tape,
NTSC : MC-1,
PAL
: MC-2
color bar
recorded section
• PLAY
• ADJUST
MENU, 100.
PB SW
POINT
(1) Press the EDIT USER 1/2 button to select AD-
JUST MENU No. 100, "PB SW POINT".
(2) Play the alignment tape. Ensure that the com-
patibility adjustment has been performed and
the FM waveform at TP9 (ENV OUT) is flat and
stable.
(3) Press the JOG dial to cause the * marking to
blink. The PB switching point will be adjusted
automatically.
*
TP6 (SPA)
*
TP9 (ENV OUT)
TRIG: TP5 (HID)
GND: TP1 (GND)
[Rewrite board]
-
Auto adjustment
+
a, b = 126
µ
s sec
10
µ
s sec
Measuring
Measuring point (
*
)
No.
Item
instruments &
Mode
Adjustment parts (
-
)
Adjustment procedure
Input signals
Adjustment level (
+
)
3.5 DVC UNIT ADJUSTMENTS
Preparation : Connect the Rewrite board (CK453800C) 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.
Fig. 3.4 Rewrite board connection method
a
a, b : 126
µ
sec
±
10
µ
sec
b
HID (TP5)
SPA (TP6)
ENV OUT
(TP9)
REWRITE BOARD
(4) Measure TP6 (SPA) by triggering TP5 (HID) and
confirm that the values a and b are within the
specified ranges.
(5) Rotate the JOG dial to display the adjustment
data in the "DATA:" field. (The DATA value
should not be 00000000 or FFFFFFFF.)
(6) Press the [JOG] button so that the * marking
stops blinking. Now the adjustment is com-
plete.
– – –
A D J U S T
M E N U
– – –
1 0 0 . P B
S W
P O I N T
∗
V R
D A T A
:
- - - -
C T L
D A T A
:
1 2 0
S E T
D A T A
:
1 2 0
D A T A
:
0 0 0 0 0 0 0 0
Rotate the JOG dial to
display data.
After displaying the data,
press the JOG dial to
complete the adjustment.
NOTE:
Make sure that the data value is displayed
before pressing the JOG dial. If this adjust-
ment is completed before the data value is
displayed the adjustment value will not be
put into the memory.
NOTE:
When adjusting this item, set the MODE
switch to VTR.