Video Detection Coil Adjsutment * Open soldering pad IF. Pattern Signal generator generator TV-350 Set Low-pass filter
Oscilloscope
Input TP2
Output TP3
R=180 ohm C=0.01 µF Input Input Connection Point Pattern generator Signal generator Input Signal Color bar 38.9MHz 41 ± 3dBµ Adjust Output Connection Low-pass filter Oscilloscope Output Point Result
TP2
T200
TP3
Adjust for DC level at mini-
AFT Coil Adjustment * Open soldering pad IF. Sweep generator TV-350 Set
Oscilloscope
Voltmeter
Input TP2
Output TP4
Sweep generator
TP2
38.9 ± 5MHz (Sweep) Marker: T201 38.9MHz 70dBµ
Voltmeter Oscilloscope
TP4
Adjust for 1.8 ± 0.2V reading on voltmeter. Confirm that the marker is at the middle of S-curve on oscilloscope.
Contrast Adjustment * Open soldering pad IF. Pattern generator Signal generator TV-350 Set Low-pass filter Input TP2 Output TP5 R=100 ohm C=2700 pF Pattern generator Signal generator
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Oscilloscope
TP2
Color bar 38.9MHz 70dBµ
Adjust step form wave to read VR300 Oscilloscope TP5 0.75 ± 0.05 Vp-p.
