Samsung RCD-750 - FM Adjustment Procedures

7-1-3. FM adjustment
ae |
ITEM CONNECTION | STEP S.S.G RADIO DIAL Adjustment
Frequency
SETTING
Point
RESULT
1 87.3MHz Tune to the FL2 Best resonating
Lowest frequency | FM OSC coil point of SSG.
Frequency Fig. 2 i — [— =a
coverage ;
108.3MHz Tune to the VC2 OSC Best resonating
¢ highest frequency | trimmer(VARICON) | point of SSG.
| =i all |
a 3 Repeat steps 1 and 2 several times.
4 90MHz 90MHz Not required
| —_
Tracking Fig. 2 |
:
106MHz
106MHz
VCT1
ANT
Maximum
trimmer (VARICON)| Output
aes Bea
i 6 Repeat steps 4 and 5 to obtain suitable sensitivity at
9O0MHz and 106 MHz.
FM OUTPUT : FIC1 (KA2293) PIN NO. 13, 14
IF GENERATOR
MAIN PCB
IC1 PIN NO 19
GNDO
O
B4 BODY
oO
| | 75 ohm DUMMY
MAIN PCB
RCD-750
i or GND
4 ohm load
Fig. 2
A
OUT
VTVM OSCILLOSCOPE
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