Samsung MAX-VB630, Руководство по обслуживанию

Страница: 3 / 28

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