Expert m 1436 home stereo music system

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ALIGNMENT PROCEDURE (TUNER) 1. Signal input must be kept as low as possible to avoid AGC and limiting action. 2. Standard modulation is 400H2 at 30% amplitude. 3. Set volume control at maximum unless otherwise indicated, when using V.T.V.M. for output indicator. 4. Set function selector to "RADlO" position. Step Signal Generator or Sweep Generator Radio D ial Setting OutputlndicatorConnection Adiust Adiust for Connection F requency AM-II -ALIGNMENT 1 Push MW button 2. To standard loop-ANT placed at a distance of 60cm from the built-in bar-ANT. 470 KHz Point of non-inter-f erence Scope or V.M. To TP101(GND to R1221 or SPoutput T103 T104 (1st(2nd IFT) IFT) Maximum output MW.R F ALIG NM ENT 3. SAME AS STEP (21 540 KHz 540 KHz SAME AS STEP (21 L5(MW OSC coil) Maximu m output 4. SAME AS STEP (21 1600 KHz 1600 KHz SAME AS STEP (21 TC6(MW OSC trimmer) Maximu m output 5. Repeat steps (3) and (41 . 6. SAME AS STEP (21 600 KHz 600 KHz sAME AS STEP (21 190 1 (MW ANT coil) Maximum output 7. SAME AS STEP (21 1400 KHz 1400 KHz SAME AS STEP (21 TC4(MW ANT trimmer) Maximum output 8. Repeat steps (6) and (7l,. LW.R F ALIGNMENT i9. Push LW button. II 10. SAMEAS STEP (21 150 KHz 150 KHz SAME AS STEP (21 L6(LW OSC coil) Maximum output 11 SAME AS STEP (21 300 KHz 300 KHz SAME AS STEP (21 TC7(LW OSC trimmer) Maximum output 12. Flepeat steps (10) and (1 1 ) 13. SAME AS STEP (21 160 KHz 160 KHz SAME AS STEP (21 1902(LW ANT coil) Maximu m output 14. SAME AS STEP (21 280 K Hz 280 KHz SAME AS STEP (21 TC5(LW ANT trimmer) Maximum output 15. Repeat steps (13) and (14l, . FM.IF ALIGNMENT 16. Push FM button. 17. SWE EP G EN E RATO R Hot side .... clip Transisto r (O2) as shown in Fig. A G N D .... to Chassis (o 2 .... 2SC 10471 10.7 MHz Point of non-interf erence Vertical amplifier of scope. To TP 102 (Gtl D to R1221 T 102(FM Det. Coil) Turn fully counter clockwise T1 (1st I FT) T1 01 (Fltlt Det. Coil) F lat and maximu m as shown in Fig. B. T102(FM Det. Coil) "S" curvg as shown in Fig. C. -1-

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ALIGNMENT PROCEDURE (TUNER) Fis. A Fig. B Fig. C TUNER ALIGNMENT COMPONENT LAYOUT (COMPONENT SIDE) Step Signal Generator of Sweep Generator Radio Dial Setting Output indicator Connection Adjust Adiust for Connection F requency FM.R F ALIGNMENT 18. To FMANT terminal Through dummy BB MHz 88 MHz Scope or V.M. To TP102 (GND to R1221 or SPoutput L4(FM OSC coil) Maximu m output 19. SAME AS STEP (18) 108 MHz 108 MHz SAME AS STEP (18) TC3(Fttlt OSC trimmer) Maximum output 20. Repeat steps (18) and (19). 21 SAME AS STEP (18) 90 MHz 90 MHz SAME AS STEP (18) L1(FM ANT coil) L2(Fttlt RF coil) Maximu m putput 22. SAME AS STEP (18) 106 MHz 106 MHz SAME AS STEP (18) TC1 (FITII ANT trimmer)TC2(Fttlt RF trimmer) Maximum output 23. Repeat steps (21l, and (221 . FM MPX PILOT ALIGNMENT 24. No. signa I Point of no n -i nter- ference F req uency cou nter To TP151 (GruD to Rl22]. Short-circuit between R122 and TP102. SV R .152 19 KHz+30 Hz FM STEREO SEPARATION ALIGNMENT 25. SAME AS STEP (18) 98 MHz !nput 1 mV stereo mod. 1 KHz 3Oo/o L (and R) 98 MHz Scope or V.M. To right ch. output (To Left ch. output) SVRl 51 Minimum output 022SC1047 /^\ ru LOUDNESS FM LW MW FM AFC -2-