Kenwood SVT-M700 Service Manual page 11

Item
3-13. B Sub-contrast
adjustment
CH : 15
3-14. VCOM amplitude
adjustment
CH : 1
3-15. Exit from Video level 1. Exit from Video level adjustment mode by pressing DIRECT key of
adjustment mode
4. Flicker adjustment
VR302
Attention
When Touch Panel Adjustment and Video level adjustment are
done, please use the Remote sensor jig.
Process
(1) Remove the Unit's connector (2 Pin Type).
(2) Connect the BU and GND lines of the Remote sensor jig to the
Power Supply unit.
(3) Insert the jig's connector toward the tip of the arrow.
ADJUSTMENT
Adjustment method/Adjustment value
1. Select CH : 15 by using the remote controller.
2. Observe the waveform of TP26 on an oscilloscope.
3. Adjust the amplitude value so that the waveform between the 9th
step from the pedestal and the reversal one is 1.7V±0.1V by using
the remote controller.
4. Fix the adjustment value by using the remote controller.
1. Select CH : 1 by using the remote controller.
2. Observe the waveform of TP132 on an oscilloscope.
3. Adjust the amplitude value so that VCOM square-wave is 6.9V±
0.1V by using the remote controller.
4. Fix the adjustment value by using the remote controller.
the remote controller. At this time, all adjustment data by using
Video level adjustment mode are written to EEPROM.
1. Input the Composite Gray RASTA [NTSC] signal.
2. Adjust VR302 so that the flicker level will be the minimum.
SYNC
1.7V
SYNC
6.9V
Remote sensor jig
SVT-M700
Conditions
• Input : Video in
• Input signal : Composite
SYNC (10 STEP signal)
[NTSC]
0.7V
• AC range
• Oscilloscope 0.5V/DIV
• Input : Video in
• Input signal : Composite
SYNC (10 STEP signal)
[NTSC]
0.7V
• AC range
• Oscilloscope 1.0V/DIV
• Must be in test mode.
• Input signal : Composite
input Gray RASTA
[NTSC](Easy to read
level of white 30~50%)
BU line(YEL)
GND line(BLK)
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