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KVT-M707/M707Y
QQ
3 7 63 1515 0
OSD Clock and OSD HSYNC Phase Adjustment
(X14-)
Condition
Video source: VIDEO
Input: NTSC video (Video: Color bar)
Screen mode: FULL
Adjustment Procedure
1. When starting up in Test Mode, it starts up with VIDEO
source (FULL).
F-key will switch: Menu Screen ↔ VIDEO
2. Refer to Figure 1.
Monitor with an oscilloscope IC301 pin11 TP307 (HYSNC)
and IC301 pin2 TP308 (OSC IN) and set T-range to 0.1µsec.
* Depending on performance of oscilloscope, it would be
easier to adjust with smaller T-range.
* Put on trigger with HSYNC.
* When the waveform cannot be accurately monitored due
to lack of oscilloscope capability and/or probe capacity,
use HSYNC: TP309 and OSC IN: TP310.
In that case, the wave oscillation width will be smaller.
3. As shown in Figure 2, so that from the falling of HSYNC
TE
L 13942296513
and the 16th falling of OSC IN will overlap with the rising of
HSYNC, turn VR2 and adjust.
Default value of Test Mode screen position adjustment
HPOSI adjustment
Full OSD
TV
VIDEO
NAVI
www
.
24
ADJUSTMENT
OSD screen position adjustment
+2
+1
0
-4
0
-4
0
+1
x
ao
y
i
8
1
Q Q
3
6 7
1 3
Fig 2 The phases of CLK and HSYNC at default of
1
u163
.
Fig 3 CLK and HSYNC phases after adjustment
2 9
9 4
2 8
Fig. 1
16
1 5
0 5
8
2 9
9 4
variable resister (Center)
16
m
co
9 9
(X14-)
IC301 pin11
HSYNC
(X14-)
IC301 pin2
OSC IN
2 8
9 9
VR2
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