ADJUSTMENTS 1. VCC2 adjustment, VCC2-3, VCC7, VEE1 voltage check 2. LLD coil adjustment 3. Free running frequency adjustment 4. Contrast adjustment 5. TINT pot adjustment Preparations 1. Connect AVB (CP725) to GND. 2. Set SW100 on UHF mode. Adjustment procedures 1.
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• Adjustment Monitoring HDB (CP305) with a frequency counter, adjust VR700 so that the frequency is 15.734 ± 0.1 [kHz]. • Caution (1) Disconnect the wire between SYF terminal and VCC2-7. Applying IF signal make sure that synchronization is normal on the display. (2) Use input signal pattern conforming CCIR standard.
SCHEMATIC DIAGRAMS LINEAR IF Detection Circuit Audio Amplifier Circuit Antenna Antenna External Jack Earphone Jack Speaker Chroma Circuit Tunner Tunner Power Switch Tuning Voltage Generator Circuit 40 V 4.0 V –5 V Power Supply Circuit Display Controller Circuit Display Generator Voltage Circuit —...
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BACK LIGHT Notes: 1. All resistance values are indicated in "ohms" (k=10 ohms, M=10 ohms). µF). 2. All capacitance values are indicated in "µF" (p=10 3. All inductance values are indicated in "µH."...
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