Adjustment - Sharp Rg-F551G Serviceanleitung

RG-F551G/553G
RG-F552E/554E
ADJUSTMENT | |
|SWITCH
SIGNAL TA
GENERATOR 1 BIZ, 30%, is modulated | |
TEST FRE- FRE- 'ADJUST-
STEP | STAGE |QUENCY | QUENCY |MENT _
DISPLAY |
IF . 98.0 MHz! 98.0 MHz
3 }at54dB | eer oF
FM STEREO SEPARATION ADJUSTMENT
SWITCH
POSITION
SIGNAL |
GENERATOR 400 Hz, 22.5 kHz dev, FM modulated
FREQUENCY. | FREQUENCY | ADJUSTMENT
| DISPLAY
98.0MHz74dB| 98.0 MHz VR201 |
| (Fig. 16)
VCO FREQUENCY ADJUSTMENT
SIGNAL 400 Hz, 22.5 kHz dev, FM modulated
GENERATOR (mono signal)
FREQUENCY FRE- ADJUST- |
QUENCY | MENT
DISPLAY
FM mono position FM stereo position -
(unmodulated)
98.0 MHz at 60 dB 198.0 MHz | VR202__—'| Adjust for 19.00 kHz
(Fig. 16) | +50 Hz.
ANSS ADJUSTMENT
_ Adjust for
maximal
|. output.
108,0 MHz L51 Adjust for mini-
| | mum output.
Adjust for mini-
mum separation,]
FREQUENCY | FREQUENCY ; ADJUSTMENT 7
DISPLAY
Po 'Electronic
TU101 «Voltmeter
(1) Pin.
(Fig. 16)
Figure 12—1 CLOCK REFERENCE FREQUENCY —
Electronic
FM Signal
Voltmeter
Generator
Antenna Socket
To Antenna Socket
2=75 ohms< Ps = 37.5 ohms
= 75 ohms
Z = 50 ohms<! = 50 ohms
To Chassis GND
R2 = 50 ohms
FM Stereo Z: Output impedance of signal generator
Modulator Electronic
eer Voltmeter
FM Signal Phi : Speaker Socket
Generator ocke eer
ome U4.
~ GND
Figure 12—3 IF/SEPARATION
VCO: Antenna Socket
ANSS: IC51
(1) Pin
Electronic
VCO: 1C201 (2 Pin Voltmeter
FM Signal (Fig. 16)
Generator
Figure 12—4 VCO/ANSS
—12—