Service manual

Table: IF PLL offset
AFA AFB IF PLL offset
0 0 Decrease offset value
0 1 Increase offset value
1 0 Correct
1 1 Correct
AGC
Set the pattern generator (e.g., PM5418) to a color bar video signal and connect the RF
output to aerial input. Set amplitude to at least 1mV.
Alignment procedure:
1. Enter SAM mode, select TUNER and activate the AGC line in the sub menu.
2. Connect a DC multimeter to pin 1 of the tuner (item 1200 on LSP).
3. Adjust the AGC until the voltage at pin 1 of the Tuner is just below 3.8V.
4. Increase/decrease the value by pressing the “CURSOR LEFT/RIGHT” button on
the RC transmitter.
5. Store by pushing “MENU/SELECT”.
6. Switch the set to “STANDBY”.
2ND AGC
Set the pattern generator (e.g., PM5418) to a color bar video signal and connect the RF
output to aerial input. Set amplitude to at least 1mV.
Alignment procedure: