JVC RC-550L - Tuner Alignment; AM IF & RF Alignment; FM IF & Discriminator Alignment

RC-550L/LB
Tuner Alignment
Output Measuring: Speaker terminal (Impedance = 622), output level 50mW (0.55V/6Q)
AM IF & RF Alignment
Input (SSG) Modulation 400Hz, Modulated to 30%
Frequency
Place to be aligned Set the V. Capacitor to
Band Frequency
rie 455kHz Loop Antenna L13,14,17 Minimum
Repeat the Step 1, and adjust for no further improvement.
520kHz LQ Maximum
Loop Antenna
1650kHz C52 Minimum
L5
7
Repeat the Steps 3 & 4.
MW
600kHz [eB el] 600kHz Signal
Loop Antenna
1400kHz Cc 1400kHz Signal
Repeat the Steps 6 & 7, and adjust for no further improvement.
145kHz L10 Maximum
Loop Antenna
360kHz C53 Minimum
_
=
— | — NI] oO ~ on; PB] win
Repeat the Steps 9 & 10.
LW
160kHz 160kHz Signal
Loop Antenna
350kHz 350kHz Signal
Repeat the Steps 12 & 13, and adjust for no further improvement.
= wo
Rod Antenna L11 Maximum
through
6.3MHz Dummy Antenna C54 Minimum
Repeat the Steps 15 & 16,
5.9MHz Rod Antenna L7 5.9MHz Signal
through
6.3MHz Dummy Antenna C38 6.3MHz Signal
20 Repeat the Steps 18 & 19, and adjust for no further improvement.
21 5.8MHz Rod Antenna L12 Maximum
through
22 18.6MHz Dummy Antenna C55 Minimum
No wo
Repeat the Steps 21 & 22.
Sw2
24 6.0MHz Rod Antenna L8 6.0MHz Signal
through
25 18.0MHz Dummy Antenna C39 18.0MHz Signal
Repeat the Steps 24 & 25, and adjust for no further improvement.
NO
oO
Note: Set the fine tuning knob to the centre position when aligning.
Output (Oscilloscope) : OIF TP5 (hot) & TP8
Discriminator TP4 (hot) & TP8
Place to be aligned Wave form
L3 Peak
-W1-— No. 1384