Philips 27G7 Service Manual page 42

2nd Tuner AGC Adjustment
1. Tune to a normally snow free station.
2. Adjust potentiometer 3140 (on the Single PIP Panel A10782 or A10783) to its fully counterclockwise
position.
3. Slowly turn potentiometer 3140 clockwise to a point slightly beyond the point of minimum snow.
Note: Do not turn the control any further as it may result in an overloaded picture on the face of the CRT
(caused by a strong station).
2nd Tuner AFT Adjustment
1. Input a 45.75 MHz video signal to the input of the saw filter (Pin 1 of 1140).
2. Connect a voltmeter at Test Point F509 of the Single PIP Processing Panel.
3. Adjust coil 5147 to obtain a reading of 2.5 volts on the voltmeter.
Figure 5
Figure 6