Am(Mw),Lw,Sw1,Sw2 Adjustment - Samsung MAX-VB630 Service Manual

Alignment and Adjustments

1-1-2 AM(MW),LW,SW1,SW2 Adjustment

Circuit Measuring Instrument & Step
to be Arrangement
Adjusted
OSC Connect AM signal
generator to loop
antenna,VTVM AND
oscilloscope
(Fig 1-3)
AM
(MW)
RF "
"
INTER FREQ
OSC Fig 1-3
LW
RF
OSC Fig 1-3
SW1
RF
OSC Fig 1-3
SW2
RF
1-2
S.S.G Radio dial Adjusting Adjust for
Frequency Setting Point
1 522KHz 522KHz MO Adjust for
(IR117)
2 1611KHz 1611KHz MO
Check for 7.0V±1.0V at the high.
(IR117)
1 594KHz 594KHz MA Maximum out
1 455KHz 522KHz AM IF Maximum out
1 146KHz LO Adjust for
2 290KHz LO
Check for 7.0V±1.0V at the high.
1 150KHz 150KHz LA Maximum out
1 2.3MHz SO1 Adjust for
2 7.3MHz -
Check for 8.5V±1.0V at the high.
1 3.5MHz 3.5MHz SA1 Maximum out
1 9.5MHz SO2 Adjust for
2 26.1MHz -
Check for 8.0V±1.0V at the high.
1 10MHz 10MHz SA2 Maximum out
1.0V±0.1V at the low.
2.0V±0.1V at the low.
1.0V±0.1V at the low.
1.5V±0.1V at the low.
Samsung Electronics