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ADJUSTMENT PROCEDURE
INSTRUMENT AND TOOLS
. FM, AM STANDARD SIGNAL GENERATOR (SSG)
. OSCILLOSCOPE
. FREQUENCY COUNTER
VTVM
. LOOP ANTENNA
DUMMY LOAD (4 OHM)
. DIGITAL TESTER
NOgPpons
BEFORE MAKING ADJUSTMENT
1. Check the power source voltage.
2. Select desired Band and Function.
3. Set Tone Control at mid position
4. Modulate AM to 30% amplitude with 400Hz signal and FM to 22.5MHz deviation with 400Hz signal.
5. Set Volume Control to approximately S0mW (40hm)
@
ADJUSTMENT POINT LOCATION (AUDIO SECTION)
MAIN PCB (PARTS SIDE)
e@ 7105
: AMANT TRIMMER (1404KHz: 2BAND)
e@ 1102
AMASC TRIMMER (1611, 1720KHz)
e@ 1104
AM ANT TRIMMER (1404KHz)
e L102
AM OSC COIL (522, 530KHz)
e L101
AM ANT COIL (594KHz)
e L501
: REC BIAS COIL (85KHz)
—15—
LW ANT TRIMMER (270KHz)
LW OSC TRIMMER (295KHz)
LW OSC COIL (146KHz)
LW ANT COIL (164KHz)
AM IFT COIL (594KHz)
SPEED CONTROL (2985KHz)
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