Mhz Carrier Level Adjustment; Y Demod Carrier Balance Adjustment - Sony CCU-TX7 Service Manual

4-3-7. 22.5 MHz Carrier Level Adjustment

Equipment : Oscilloscope
To be extended : YD-26 board
Test point : TP10 (GND: E5)/YD-26 board
Adjusting point : 1RV7 (Y CARR LEVEL)/
YD-26 board
: A = 400 ± 20 mV p-p
Specification
(BW LIMIT/Oscilloscope → "OFF")
4-16
A

4-3-8. Y DEMOD Carrier Balance Adjustment

Equipment : Oscilloscope
To be extended : YD-26 board
Preparation :
. In case of RCP-TX7
Set IRIS AUTO button to "OFF", and close the lens iris by
IRIS control knob.
. In case of COU-TX7
Set AUTO/MANUAL switch to "MANUAL", and close
the lens iris by IRIS control knob.
. S3 (Y 2nd AGC)/YD-26 board → "OFF"
Test point : TP11 (GND: E6)/YD-26 board
Adjusting point : 1RV8 (Y CARR BAL)/YD-26 board
Specification : A = maximum level
V
A
CCU-TX7 (E)/V1