Setton RS 440 Service Manual

Page 2

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CONTENTS

SPECIFICATIONS ........................................................
CIRCUIT DESCRIPTION ....................................................

2.1
2.2
23
2.4
2.5
2.6

FM FRONT END .....................................................
AM TUNER .........................................................
FM IF AMPLIFIER AND MPX DECODER ....................................
SIGNAL STRENGTH METER .............................................

ALIGNMENT PROCEDURES ..................................................

3,1
3.2
3.3
3.4
3.5
3.6
3.7
3.8
3.9

TEST EQUIPMENT .....................................................
MAIN AMPLIFIER ALIGNMENT ...........................................
AM IF ALIGNMENT ...................................................
AM TRACKING ALIGNMENT .............................................
AM SIGNAL METER ALIGNMENT .........................................
FM IF ALIGNMENT ....................................................
FM FRONT END ALIGNMENT ............................................
IF DISTORTION ALIGNMENT ............................................
SIGNAL METER ALIGNMENT ............................................

3.10 FM MPX CIRCUIT ALIGNMENT ...........................................
BLOCK DIAGRAM .........................................................
DIAL CORD STRINGING ....................................................
BOTTOM SCREWS ASSEMBLING ..............................................
ELECTRICAL PARTS LOCATION (P.C. BOARDS) ..................................
EXPLODED VIEW .........................................................

CAUTION

BEFORE OPERATING THIS UNIT PLEASE CHECK POWER
SOURCE VOLTAGE CAREFULLY.

INCORRECT VOLTAGE SETTING MAY SERIOUSLY DAMAGE
THE UNIT, WHEN CHANGING VOLTAGE SETTING, ALWAYS
REMOVE THE POWER CORD PLUG FROM AC OUTLET.