Samsung MAX-B420 Service Manual page 4

1-3 AM(MW),LW,SW1,SW2 Adjustment
Circuit Measuring Instrument & Step
to be Arrangement
Adjusted
1
OSC Connect AM signal
generator to loop
antenna,VTVM AND
oscilloscope 2
(Fig 1-3)
AM
(MW)
RF " 1
" 1
INTER FREQ
OSC Fig 1-3
LW
RF
OSC Fig 1-3
SW1
RF
OSC Fig 1-3
SW2
RF
Samsung Electronics
S.S.G Radio dial Adjusting Adjust for
Frequency Setting Point
522KHz 522KHz MW OSC Aduust for
(IR117)
1611KHz 1611KHz MW OSC
Check for 7.0V±1.0V at the high.
(IR117)
594KHz 594KHz MW ANT Maximum out
455KHz 522KHz TL2 Maximum out
1 146KHz LW OSC Aduust for
2 290KHz LW OSC
Check for 7.0V±1.0V at the high.
1 150KHz 150KHz LW ANT Maximum out
1 2.3MHz SW1 OSC Aduust for
2 7.3MHz -
Check for 8.5V±1.0V at the high.
1 3.5MHz 3.5MHz SW1 ANT Maximum out
1 9.5MHz SW2 OSC Aduust for
2 26.1MHz -
Check for 8.0V±1.0V at the high.
1 10MHz 10MHz SW2 ANT 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.
Alignment and Adjustments
1-3