Pioneer SX-450 Service Manual Download | Manualshive

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Summary of Contents for SX-450

Page 1: ...3s r t r t o si I iiJ l E F 0rrroruEen ...

Page 2: ...G RFAssT AwE lu Quz2SA 25xz ozor l E o LN T Y1 C a J o 5 c l cw 6 0 o3 2SC 61 zo 2scl222xz l0v 5 d e o 6 o F 9 o 2 q d SW ITCHIS SI SPEAKER S 1 POWE R OFF 2 S P A 3 SP OFF ql r I K a E 2SCt 222 Ss MODE STEREO _ l 10N0 So LOUDNESS ...

Page 3: ...H i T H Cw 41hs n o s C W t e t tari I l I 2SCl222 xz I t fr 33 611 o o 3 I o G I o d F o F 5 q F I I l n r a r t l u s d F 6 3l 9 N F G LO e a n4 H t q3or2503l3R d e VRlBALANCE CONTROL 1tl 85 C2a6 C O I v C o 5 t tr 3 sct3 8 Qrot Dx I 0 1 h A 25 Uxos ugot DtAutt t0tCAT0R 8V300mA x3 DS l50Ax ...

Page 4: ...l q J t E o 9 6 I o I E ADilusrHEN r c or22P 1 2w oros ezoe 25Cltltl 5At 4 o o lr P E o 9 d Cmz Crro a a a ADJUSTI IENT L2 14H Rzoo l0 llZWl 4s 21t cD 9 t r 5 T s 5 9 2SCl3 8 Dror ft12 tO 2 xz Qror Rlor 33 93_or FU ocor250313R n n t r r v l n UXos UIOB U3o8 DIAL INDICATOR EV300mA x3 3 c r O r U C o 5 c r c ...

Page 5: ... uig I to s a ADJUSTilENT c os22P c E o o E J o 9 o I o E O o d Crn 22Pd ADilUSTtlENT L2 11H Rzco l0 llZWl shs 1i Sfvcn r 9 t r o r 5 T zSCl3 8 Dor D312 lOE2 xe Qror Broijf9qo _FU tr c c s O q3o 250313R O d L h A iv vt n Ujos U30t U3o6 DIAL INDICATOR 8V300mA x3 3 c O f v C r 5 t c ...

Page 6: ...HAll o E a o o s o 9 c ci r l I I i iT H i T H Y c A ttr C3 Qns 2SCl222 xz I l r33 511 o o ll o 9 9 t f o o c I I tAs J 2 I E o3o 250313R N E flK NK I u Edh HtE l 10Nlr0R I ffi 1M 85 t 249J U I Rzia iOoir v 5 t tr 3 EAKER OUTPUT 10 9V EQ lKHr I G N A L Dto l l l s tdt b 3 scl3 8 Qrot 2sv D 6 Drs Dror N l50Ax DIAL INDICATOR 8V 300nrA x3 ...

Page 7: ... J SWITCHES SI SPEAKER S 1 POWER OFF 2 S P A 3 SP OFF I K a o 2SCt 222 Ss MooE STEREO l 10N0 Ss LOUDNESS 5 2 F M M U T I N G 0N t OFF 53 FUNCT 0N I At1 2 Ft1 3 PHONO AUX Sa TAPt MON tTO R Q EL oN S4 Ac VOLTAGE SELECTOR 220V4_ 240v RESISTORS lN OHM 1 4W t o o TOLERANCE UN OTHERWISE NOTED K K CI M MC CAPACITORS lN 4F UNLESS 0THERW ISE NOTEDP pF I VI STGNAL VOLTAGE AT mA DC CURRENT AT N0 V DC VOLTAGE...

Page 8: ...n AC voltmeter Set AM signal generator and SX 450 dial in dication to point C 1 400kH2 4 sx 450 7 Adjust TC4 for maximum indication on AC voltmeter 8 Again set AM signal generator and SX 450 dial indication to point A 9 Adjust bar antenna core for maximum in dication on AC voltmeter 10 Return AM signal generatorand SX 450 dial indication to point C 11 Adjust TC5 for maximum indication on AC voltme...

Page 9: ...dial indication to point C 106MHz 9 Adjust TC3 then TC1 and TC2 for u i rr A indication on AC voltmeter 10 Again set FM signalgeneratorand SX 450dial indication to point A 11 Adjust T3 then T1 and T2 for maximum indication on AC voltmeter 12 Repeat steps 8 11 to eliminate variations in sensitivity at points A and C 13 Adjust t4 for maximum sensitivity 14 Detune to noise only and adjust T5 lower co...

Page 10: ...board sx 450 4 Set SX 450 dial indication to 98MHz and adjust FM signal generator for center of scale indi cation on AM FM meter 5 With FM signal generator unmodulated adjust VR1 so that lissajouspattern on oscilloscope becomesstationary as shown in Fig 12 6 With MPX signal generator modulation lkHz L R 67 5kHz deviation and pilot 7 5kHz deviation adjust T4 for minimum distortion tl a t I I r l I ...

Page 11: ...nnected to the INPUT jacks of SX 450 and an 8 ohm dummy load should be connected across the SPEAKER terminal 3 A DC voltmeter should be connect across between terminal number 19 1 20 for Left channel and 18 1 1 l7 for Right channel 4 Cut the jumper lead if the voltage less than 15mV f i j i t a fNt DC Voltmeter e d ...

Page 12: ...at the cord is under tention 1 6 Turn TUNING knob and confirm normal cord motion then trim off excesscord I t 7 With tuning capacitorbladesfully closed move dial needleto starting point left edgeof scale 8 Apply laquor to tied ends of cord Spring hook Tie to spring hook sx 450 DIAL NEEDLE INSTALLATIONCAUTION Metal portion of dial pointer is plated If this section is touched directly by hand or fin...

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