Pioneer QX-747A F Service Manual Download Page 64 | Manualshive

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Summary of Contents for QX-747A F

Page 1: ...A GFIANNE STHRHS RHCHgVER F ART 141 0 fors 6osMnual Jlpnffiruffiffite ...

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Page 20: ...rator output to the AM antenna terminal through a 1kO resistor 2 Connect the oscilloscope and voltmeter in parallel to TAPE REC jack 3 Set the signal generator output level at approxi mately 30d8 Set signal generator and set dials to 600kHz 4 Adjust cores of T7 tuner assembly and the bar antenna for peak output 5 Set signal generator and set dials to 1 400kH2 6 Adjust TC5 and TC6 tuner assembly fo...

Page 21: ... and TCB to obtain peak output 7 Repeat steps 3 through 6 several times to obtain optimum tracking 8 Set the frequency to gOMHz and adjust the Tb core of the tuner assembly to obtain peak output 9 Detune the set so that noise only is received Adjust the primary bottom core of T6 so that the tuning meter pointer indicates the center position 10 Set signal generator and set dials to 98MHz Set signal...

Page 22: ...ator terminals Gl 747 A Connect the oscilloscope horizontal inputs to MPX SG s PILOT OUT terminals and Vertical inputs to No 18 terminal of tuner assembly Tune unit and FM SG to 98MHz Produce a Lissajous pattern on oscilloscope and adjust VR1 to make the pattern still Then set signal generator for modulation of L later R and pilot Adjust VR2 to obtain maximum channel separation 3 4 5 6 FM signal g...

Page 23: ...ration a defect in the output transistors can be suspected Check the output stage Bottom View 6 After approx 10 20 minutes of warming up time adjust vR101 so that the voltage across terminals 58 and G3 of the power amplifier assembly becomes 20mV 7 In the same way adjust the following variable resistors to obtain 20mV voltage readings across the following terminals Terminals 49 55 VRI02 Terminals ...

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Page 34: ...inal A KE O1O Antenna holder assembly AXB OOl Switch cover assembly AEC 1 1O CM 3x8 T 3x relief 079 s N w _ l a Phono jack A 4 jacks AKB 014 RT 3xB Phono jack B 4 jacks KB 015 tt F hono jack lt jaek AKB 019 Slide switch S3 DE EMPHASIS ASH 013 RT 3x6 t Micioswitch S7 switch cover N ASF 001 Bai antenna ATB 041 W lnsulator xl t AEc 111 Y a9 47 ...

Page 35: ...tor O1 10 f vdv r k 2SD371S R or O 2SC1030S B or il sulator water Transistor o109 AEC 076 1 5 iS D 3i 7QR oro d 2 SGi40 3n or O G 14 Y z x dtp l 4 RT 3x8 Transistor O1 13 i 2S8530 R or O 2SA745 R or Oli Transistor O1 16 i 2SB531S R or O 2547565 8 or C Transistor 01 15i r i ii 1 258530 R or O 2SA745 R or Ol_ 4 5a i RT 3xB l ri P C board clip AEC 1i86 P wer amplifier assembly 1 2 AIJ H 028 1 2 4 N 4...

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Page 37: ...HA1137 Frvr tF rc HAl138 AM rC HAl156 Fwr MPX lC 51 ...

Page 38: ...SC 1682 cx7 18D HA1 156 HA1452 8 9 tont tst4 zhhhbbrrL W Index 2SA725 2SA726 2SC 869 2SC 1312 m c W g 25B 527 25D357 M51651 P to r I t2 t3t4E 16 t7 t8 lJ n ry Jr I W 35K45 D 0 Gl 2SB 507 2SD31 3 25D525 25K4OV t ffiLun A Jl d 2SB 530 2SB 53 1 2SD370 2SD37 1 Wc I ll B t t r_ Ji 2SC 1451 2SC 461 2SC 535 2SC 1344 reE 2SC 1 384 E c B E c B E l rX lT7 o NflO _ c cx 049 13 t5 t6 t7 t8 J92o 2t 2 23 p 89 1...

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Page 40: ...dphone Jack Assembly AWX 054 RESISTORS OTH ER Symbol Description Part No R1 R2 R3 R4 Metal oxide 150 2W Metal oxide 150 2W Metal oxide 150 2W Metal oxide 150 2W RS2P 151 K RS2P 151 K RS2P 151 K RS2P 151 K Glx 747A Switch circuit ass y No 1 1 Relay Switch circuit ass y No 12 Relay i J t i i J l Symbol Description Part No Phone jack FRONT Phone jack REAR AKN OO2 AKN OO2 ...

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Page 44: ...l r 1 8v O 0 a CY t C J C l Oa CO _ O O ti a N ar a t j 3 v e C 1 C I O CD o Y LO VR za R t 1t ii trr O C CO n c ct o O o Y u10 LJ c f a i a l c l GI 0 at t f 9 CY Q2 Cro C z IF 033 Lr N a a ra I rY 0 03 3 a N J Y r ij O fta 0 I til P R 276 Cz Ca tfl 4 ll _5 P s cja tt a l tr ar L L I LJ t 75 I l f a l l cta I L O O Y l o CY Q6 O L t t3 I O ca ll Cc 1 I Y a C CL o t 3 O G ft1 VR zo GI cl O gt Iy 3...

Page 45: ...n S l l l l r ltlF ts p o 2 c t 6 czrat af l I I I t o ao oo fB oo oo 4lJslel 6 7 F Ce0033 o o F fXn Crr0033 VRr o l l00K B x 2 Cro 0 033 o e 1ts h Crz0033 VRr b o Fo o iJ o Crroool8 T il t il i4 4j l VRzo L r J l 6 rooKBx z tr I vf u J VR4a 2 Power amp Power supply ass y No 9 ass y No 17 Gl 7 47 A vR4d 2 amp ass y No 14 VR4c 2 s2 2l5R 6 vR4b 2 s2 215F 9 Power amp ass y No 1 1 Power amp ass y No 5...

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Page 49: ...al oxide Metal oxide Metal oxide Metal oxide Metal oxide Metal oxide Metal oxide Metal oxide Carbon film Carbon film Carbon film Carbon film 68k 68k 68k 68k 33k 33k 33k 33k 150 2W 150 2W 150 2W 150 2W 75 1W 75 1W 75 1W 75 1W 12k w 12k W 12k w 12k w RD PM 6B3J RD PM 6B3J RD74PM 6B3J RD PM 683J RD PM 333J RD PM 333J RD PM 333J RD74PM 333J RS2P 151K RS2P 151K RS2P 151K RS2P 151K RSlP 75OK RSlP 75OK R...

Page 50: ... t I I ta c l G O i l r l I lil cf c 6 _v di c c d v 168zu y9t eu a 0 o v o o o N r t 6I O 2 tl E st t 2 I o Mt t6 sct v 1 2 cc i lr rl tO i i rl r I irii 1 t7 d 0t 0 2 zz fcu ca Cf F ar d O ys g oct Y9 lrz a l to sr F 3 Ul GI y9t Lz 9 a O f f O i 1 1 2 I t d 0 J v N o O r I s q J a o c rll iil r r r il nt lf ft o J C r o n 9 d 0l zz 0tl 0LltL0e AII OLJ 0rizz atJ ...

Page 51: ... Power amp ass y No 49 Power amp ass y No 55 Power amp ass y No 63 Power amp ass y No 58 Power supply ass y No 6 Relay coil Relay coil Power amp ass Y No 8 o 3 s fui 5 c r d r r rANL _ o 3 S X L o rwt oo sa n n o AN oEE 4J cL ANL o ES I p lW A S o Nt o g d P o a EF 9 p nl gr e vw u o AAl_ oSE J o uL r n Y it m po et so BE r d g k I ex A J O mA jE X r AAlf _ ft t iM PB cD e ft E s e__ fu azv o t e ...

Page 52: ...ilm 5 6k Carbon f ilm 15k Carbon f ilm 15k Carbon f ilm 91k Carbon f ilm B 2k Carbon film 5 6k Carbon film 56k Carbon f ilm 10k Carbon film 2lk Carbon film 22 Metal oxide 91 R6 R7 R8 R9 Rl0 R11 R12 R13 R14 R15 R16 R17 R18 R19 R20 R21 R22 R23 R24 R25 RD7 PM 332J RD PM 332J RD PM 332J RDZaPM 332J RD PM 332J RD74PM 332J RD74PM 332J RD74PM 332J RD PM 153J RD74PM 153J RD74PM 153J R Dll4PM 1 53J RD PM 1...

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Page 55: ...K 50 coMA 272K 50 Symbol Description Part No c121 c122 c123 c124 c125 c126 c127 c128 c129 c130 c131 c132 c133 c134 c1 35 c136 c1 37 C138 c139 c140 c141 c142 c143 c144 c1 45 c146 c147 c201 c202 c203 c204 c205 c206 c207 c208 c209 c210 c211 c212 c213 c214 c215 c216 c217 C21B c219 c220 c221 c222 Mylar Mylar Electrolytic Electrolytic Mylar Mylar Mylar Mylar Mylar Mylar Electrolytic Electrolytic Electro...

Page 56: ...Carbon f ilm R127 Carbon film R128 I Carbon film R129 I Carbon film R130 I Carbon film R131 Carbon film R132 Carbon film R133 I Carbon film R134 Carbon film R135 I Carbon film R136 I Carbon film R137 I Carbon film R138 I Carbon film R139 I Carbon film R140 I Carbon film R141 t Carbon film R142 t Carbon film R143 I Carbon film R144 i Carbon film R145 I Carbon film R146 I Carbon film R141 Carbon fil...

Page 57: ...S 223J RD PS 223J RDY PS 474J RD PS 474J RD PS 563J RDTcPS 563J RD PS 3O3J RD74PS 3O3J RD PS 393J RD74PS 393J RD PS 153J RDZcPS 153J RD PS 621J RDTcPS 392J RD PS 392J RDTaPS 114J RD PS 114J R D APS 1 53J RD PS 153J RDTaPS 304J RDTc PS 304J RD PS 1B4J RD74PS 184J RD PS 1O4J RD PS 1O4J RD PS 1O4J RD PS 1O4J RD PS 223J RD PS 223J RD PS 82OJ RS2P 181J RDY4PS 82OJ RD 4PS 82OJ RDI 4PS 820J ACP 047 ACP 0...

Page 58: ...Symbol Description Part No D201 D202 D301 Diode 15188FM 1 Diode 1S188FM 1 Zener diode BZ 12O Gl 747 A 7A ...

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Page 61: ...lOM 1O CSSA OlOM 1O CSSA OlOM 1O CSSA OlOM 1O CSSA R47M 1O coMA 223J 50 CSSA R22M 10 CSSA OlOM 1O CSSA 2R2M 1O CSSA OlOM 1O CSSA 2R2M 10 CSSA R47M 1O CSSA OlOM 1O CSSA OlOM 1O CSSA OlOM 1O CSSA OlOM 1O CSSA O1OM 25 CSSA OlOM 25 c1 c2 c3 c4 c5 c6 c7 C8 c9 c10 c11 c12 c13 c14 c15 c16 c1l c18 c19 c20 c21 c22 c23 c24 c25 c26 c27 c2B c29 c30 c31 c32 c33 c34 c35 c36 c37 c38 c39 c40 c41 c42 c43 c44 c45 R...

Page 62: ...S 3O3J RD PS 474J RDTaPS 105J RD PS 474J RD PS 474J RD74PS 681J RDz4PS 513J RD PS 1O5J RD PS 1OsJ RD PS 1O5J RD74PS 1OsJ R D74PS 1O2J RD PS 1O3J RD PS 1O3J RD PS 1O3J RDZaPS 103J RD PS 224J RD PS 224J RD PS 224J RD PS 224J ACP 048 Symbol Description Part No o3 o4 o5 o6 Q7 o8 o9 010 011 o 12 013 014 015 016 D1 D2 D3 D4 D5 D6 D7 D8 D9 D10 Transistor Transistor Transistor Transistor Transistor Transi...

Page 63: ...t 4 roolre I R 2 1K DZr ldzt40 g zK 100 35 r6 2V 0 2SD313 t J ha tt L cl5 a 720150 x2 Cre 220116 55 5V qb 2SB507P Rra 5 1 lA Dt slB0tj02 Crl 220163 I I I I E Rg 5 6 K Rto 4 7K 0 Czs l Fr t50P I I Rtt tK w Rrz tzK 14 tV Rts 6 2t1 Czo 1m 50 Cre 0 e roo 63 2SA720A g 135 f I Ca 0 0j i ru Fh Rrsz Cre a Lou uJzt30 ou t _ C21 j 330 t0 1 Czz 8 7V 330f0 Rre B2 2 9 POWER SUPPLY CIRCU IT ASSEMBLY AWR 086 2 3...

Page 64: ...No 6 Control amp ass y No 4 Relay coil CD 4 ass y No 5 2200 63 H H H Jcrs no tu fa rc o ru ffi u I t tl e l I f ftui l5 19 t J _ g 1 o D5 Sl80l 02 K j r Jl 1 Wg FTfii ffi t Y f fu Ds srB0r 02o er 250525 J r Jv G___4Arrr___o r C6 0 Ol 0 rffiili4 sl i__ r 30 5V G _ H c2a t50p ni l5x Crc 220 3s P H A o o A4 C s l t I u iniso l ti f ll r os srsol or u Ti trc J ftitotrc l R 356K 14 1vRr2 c F4 H I ll tt...

Page 65: ... CCDSL 1512 ccDSL 1512 50 50 50 SEMICONDUCTORS Symbol Description Part No o1 02 o3 04 o5 o6 D1 D2 D3 D4 D5 D6 D7 DB DZ1 D22 Transistor 2SD525 O or Y Transistor 2SC1318A Oor Transistor 2SC945 O or R Transistor 2SD313 D or E Transistor 2SB507P D or E Transistor 2SA720A O or R Diode Diode Diode Diode Diode Diode Diode Diode SS3R SS3R SS3 ss3 slB01 02 1S1886 stB01 02 1 S1 886 srB01 02 1 S1 886 s lB01 ...

Page 66: ...32 J1 c 041l25 o a CY Y O o IY dsm R36 33K F Q 254 726 a 1 tl t O ct e N Q zSC1 s1 o 2SA 26 R64 41K R5s B2K Rlos 5 6 l i Rrzs 4 1 th O LO Q ct N C t fra lt 6 9 G1 l Y O c c l 5 oa 0 2SA 126 a 1k JJ vv N u F a 4 i l 5 _s o ty I I I I I I I I I I I I I 59 O ln t a r Y c N E d cJ c 9 d O Lr E 9 _ Dl1524 13 c21 330 10 L Lt O CI 105 25852 l Rllo 5 6 1W Qe zSC859 L OO icD ro_ OO o Rrrr 5 6 l l _ O I I c...

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Page 73: ...IONEEFI ELECTFIONICS C fFIF fFIATION 75 Oxfond Dnive Moonachie New Jersey O7O74 U S A PIONEEFI ELECTFIONIC EUFIOFE N V Luithagensteenweg no 9 2O3O Antwenp Belgium PIONEEFI ELECTFIONICS AUSTFIALIA PTY LTD 17A 1A4 Boundany Road Bnaeslde Victonia 3195 Austnalia o AUG 1975 Printed in Japan ...

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