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3. TINT color adjustment
IF signal
Signal
generator
VCC1-1
Stabilizer
• Conditions
(1) Apply 11.50 ± 0.05 [V] on Vcc1-1.
(2) Signals: provide color bar pattern (white 75 %) composite video signal from CP196.
Signal level; 1Vp-p ± 0.01V (75 ohm termination), conforming to NTSC-M system.
(3) Connect 47kohm resistor between CP304 and CP300 (GND).
• Adjustment
(1) Triggering CP702 (FRP), observe CP706 (VB) waveform.
(2) Adjust VR302 so that 1, 4 pulses are level.
(3) Adjust VR303 so that 2, 3 pulses are level.
(4) Adjust VR302 so that 1, 4 pulses are level.
(5) Adjust VR303 so that 2, 3 pulses are level.
•
Caution
(1) Be sure that amplitude difference between (1) and (4) pulses is less than 0.1 [V].
(2) Be sure that amplitude difference between (2) and (3) pulses is less than 0.1 [V].
M-PCB
CP706
— 4 —
Oscilloscope
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