User manual PIONEER SX-440 schematic

[. . . ] Dror, ft12 2 xz Qror FU Rlor 93_or 33 ocor250313R 3 c\r O . <r- U) C ) o 5 c!- c r - n UXos UIOB n trr. vl n U3o8 DIAL INDICATOR A E V3 0 0 m x 3 A S s ' y AWK - 069 Qo, r, Qos 2SCl3tSAxz 2g\ltQlxz , 0. 6V SW 3H a1 Rll E2K = ADJUSTilENT . s a = cE. . --* t S' hF c@ eo c?os22P + $ o o E . J R. , 'o('-uig to I :< o 9 -o I o = 22PdCrn ADilUSTtlENT L2 11H E > shs'1i++ Sfvcn >9 t r<o (r l0 Rzco (llZWl O. -+' o, d r. 5 . T zSCl3 8+ Qror Dor, D312 xe lOE2 Broijf 9qo' _FU: c! tr) c-) O s q3o, 250313R O d L) c{ O . f v> C) 3 (r c!- 5 h A t Ujos ! [. . . ] U30t . iv. vt U3o6 n DIAL INDICATOR A 8 V 3 0 0 mx 3 RF Ass'/ AWE o o (ji o t, L\V o, HA1. l37 o a', e HAll E cci r IND STEREO 8V 50mA a o o s )< o 9 &- Yc-A ttr C3 l-. Qns H'* 'T= i . iT; I I" i H <f, " )< o o ll o 2SCl222 xz -l-r33. 511 & I t > = 9, 9. o. o <. , c:, tAs 2 I E I J I ?scl3 8+ Qrot Dto l{l s tdt 'b 3 o3o, 250313R flK NK <: N. @ E 2sv t-249J. U I D6 RziaiOoir RECi Li l'10Nlr0R I ffi I u^'Edh+HtE 1M(85) v) < ? @ 5 tr3- t - Drs- Dror N-l50Ax+ DIAL INDICATOR x 8V 3 0 0 n rA3 AT VOLTAGE VI : SIONAL I G mA : DC CURRENT NO AT V : DC VOLTAGE NO AT 1 E A K E R O U T P U T 0 . 9/V Q ( l K H r ) E IGNAL 3 6 RF Ass'7 AWE 2SC535 oro2 C, n4 VCrlCr r02 a l o P1'-Jlc-'-#lF ll;ia ld 5 )< o 9 a, l= J- or-HAl. !3? lj a. h 0, 03 2SC+61 LA vc, rct AP s a la, Qnz2SA?25xz ozo3, o T . Y{' (v E J C63100/16' =l Rr+s24K Lr) f, ( l0v 6 6 d r Ua (o o O o (J d 5 o d o @ S IK a -o 2SCt 222 S WI T C H E S ; SI SPEAKER S 1 O POWER FF 2 SPA 3 SP OFF Ss Ss S4 MooE ++ STEREO LOUDNESS l'10N0 52 53 I 2 3 + Sa FM MUTING 0N -'t OFF FUNCT|0N At1 Ft1 PHONO AUX tTO TAPt MON R oN -Q. EL- Ac VOLTAGE ELECTOR S 220V 4_ 240v RESISTORS: l N O H M 1 / 4 W , t \ o / o T O L E R A N CU N E , OTHERWISE TED =K. CI M=MC} K NO , : CAPACITORS lN, 4F UNLESS ISE 0THERW NOTEDP=pF AT VOLTAGE VI : STGNAL I' '-> mA : DC CURRENT N0 AT V : DC VOLTAGE NO AT sx-450 ?Through a 1k ohm resistor, connect an AM signal generator to the AM antenna terminal. Set AM signal generator and SX-440 dial indication to point A (600kHz). Set AM signal generator and SX-440 dial indication to point C (1, 400kH2). Repeat steps 4-11 to eliminate variations in AC voltmeter indications at noint A and C. F AC voltmeter A M s i g n a lg e n e r a t o r q' tr@ . { ) q 1 25 9. 2 FM SECTION 1. With FM signal generator unmodulated, adjust VR1 so that lissajous pattern on oscilloscope becomes stationary as shown in Fig. With MPX signal generator modulation lkHz, L + R 67. 5kHz deviation and pilot 7. 5kHz deviation, adjust T4 for minimum distortion. AC voltmeter Distortion meter F M s i g n a lg e n e r a t o r Dummy load tl' Oscilloscope M P X s i g n ag e n e r a t o r l 'a t I I l I r|} ' I I I I I I Fig. 12 I I i 9 . 4 P O W E RA M P L I F I E R S E C T I O N( I D L E C U R R E N T } 1. Nothing should be connected to the INPUT jacks of SX-440 and an 8 ohm dummy load should be connected across the SPEAKER terminal. A DC voltmeter should be connect across between terminal number 19 1+;, 20 (-) for Left channel and 18 1+1, l7 (-) for Right channel. Cut the jumper lead, if the voltage less than 15mV. a r'' DC Voltmeter fi j**' ita { fNt # ed sx-450 ) 1 0 . D r A L C O R DS T R T N G T N G Removethe Front panel (Seepage 14, 15). Tie one end of cord to stud on inner section of tuning drum (more easily performed by loosening setscrew and temporarily removing tuning drum from shaft). [. . . ] Tie one end of cord to stud on inner section of tuning drum (more easily performed by loosening setscrew and temporarily removing tuning drum from shaft). Passcord through pulley opening, make a half tum around the pulley, then route in the sequence:pulley A-Dial needle-pulley B-C. Wind cord clockwise (as viewed from rear panel) 3 turns around dial shaft, then route to pulley D. [. . . ]