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7. Adjustment Procedures
. Adjustments related with the timing pulse
Input: Full-field color bar signal (white: 100 %), 1.0 Vp-p
Measurement:
10 Mohms probe, using dual-trace oscilloscope. Voltage measurement using digital tester having impedance of
1 Mohms or more.
JX-W9
"
Test point
Adhustmont
Name
Condition
Check point
point
1}
1C49 pin 6
VR26
BURST
,
V R28
WIDTH
Input signal
cust
A
A: Set VR26 so that it comes in the
middle between the burst and sync
signals.
B: Set VR28 so that it comes in the
middle between the burst and video
signals.
2 | IC46 pin 10
VR29
H.BL
Input signal
,
u
t
ial
A.
1
Min.
Set A so that in the middie of the front
porch.
MULTI
TTT
TT
3 | 1C45 pin7
VR27
V.BL
'
r
a
Set A so that it comes before the video
signal.
1
—
fo
4 | 1C56 pin 2
VR44
TIM.U
Bypass: OFF
Set the potential of IC56 pin 2 0.2 V
Mode: EFFECT
lower than that of 1C59 pin 1.
Wipe: Circle
Manual/Auto: AUTO
IN/OUT: IN
Ex:
IC59
IC59 pint ...10.8V
pin 1
IC56
pin2...10.6V
L
4
|
:
5 | 1C56 pind
VR43
TIM.L
IN/OUT: OUT
Set the potential of IC pin 2 0.2 V
higher than that of 1C59 pin 1.
Ex:
1C59 pint ...1.2V
1C56 pind... 1.4V
6 | 140 pin 15
VR-2
H.F freerun } Set so no signal is input.
Set to 15.620 +25 Hz
7
IC280 pin5,C113
| C98
|
CHROMA
| Set so no signal is input.
Set to 4.432607 +25 Hz.
freerunning
Set to 4.43273 +25 Hz.
(No, 70053) 19°
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