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Pioneer SX-838 User's Manual

1. q TUNING dL d db db LAMP ASS y fi METER 1 d 4 K n AWX 068 14 38 35 34 3 3 3 3 LE AM FM PHONO PHONO2 AUX pin pa pad ASSy FUNCTION INDICATOR 2 55W 55W BQ Amy SWITCH Assy AWS 074 A W 3 Smp Siap Sisb 15 2 5 a I E 0 cun EE lb X 2200 N beim un acl au 2 SpA 4 110 1207 130 I Ry 150 2W 2A 220 240 50 60 Hs 110 120 130 Sna Swa Siga J 1 OS gt d 8 TA Lev 70 LG NIAE 82v 9 d sanc 4292445 1 DE m Fe 00 W 224569487 ii 3 bA o jin gt 041 slg E esa 4 SWITCHED UNSWITCHED iG el LI 0 100W MAX TOTAL 200W MAX T P P j 12 p SP C 48 C47 n CONTROL Ass Y AWG 028 PROTECTION CIRCUIT ASSy AWM 025 Risa 220K MN g afg SWITCH W VOLUME 070 ROI E PHONO 1 Q Yi AUX a RCH 2 1 i 10076 R122 2 S lg n A ke JE MEN vob RT gen SWITCH Qo 2SC1344 x 2 0 AWS 065 5 gt 5 he 5 EU 3 E Eg 280726 ae
2. The oscilloscope X plates horizontal inputs should be connected to the PILOT OUT terminals on the MPX signal generator and the Y plates vertical inputs to terminal number 18 The AC millivolt meter should be connected to the TAPE REC terminals with changeover possible from L to R channels Multiplex Signal Generator Modulation L R 1kHz 67 5kHz deviation PILOT 19kHz 7 5kHz deviation Set the FM signal generator output to minimum Adjust for a stationary Lissajous waveform on the oscilloscope Reset the FM signal generator to 60dB level output And modulate either the L or R channel Adjust for the maximum separation TUNER ASSEMBLY AWE 041 19 Aligning the AM Section 1 5 838 Control Settings Set the controls knob and switch of the SX 838 as follows POWER ON FUNCTION AM 2 Connections between Test Equipment and the SX 838 Connect the AM signal qenerator to the AM antenna terminals in series with a 1k dummy resistor Connect the AC millivolt meter to the TAPE REC terminal jacks 3 Set the AM signal generator to 30 modulation at 400Hz 4 Set the AM signal generator output to 30dB at 600kHz Adjust for maximum output Carry out the ferrite loopstick antenna core adjust ment at the same time 5 Adjust for maximum output with the frequency set at 1 400kHz Adjustments 4 5 above should be re peated several times until no further significant improvement is ob
3. o T Power transformer ATT 168 A Power transformer ATT 172 0 E Power transformer ATT 181 0 GN Sub chassis ANF 235 A Electrolytic capacitor 1 000uF 63V ACH 001 C Electrolytic capacitor 8 000 50V ACH 015 0 Chassis AN A 066 E Wire supporter AEC 084 C Foot AEC 027 0 Bottom plate ANE 057 B Wire clip B AEC 005 0 Relay ASR 007 0 Wire clip A AEC 004 0 Ground terminal strip K13 047 0 P C board holder AE B 019 0 Protection circuit assembly AWM 025 C Power supply circuit assembly AWR 055 A KCU F Power supply circuit assembly AWR 064 0 GN Equalizer amplifier assembly AWF 011 0 Shield plate ANF 250 0 Wire clip AEC 064 0 Power amplifier assembly AWH 031 A Ground terminal strip 2P K13 048 0 Wire clip C AEC 007 0 Shield cover 240 Tuner assembly AWE 041 A Tuning pulley assembly AXA 015 A P C board held metal ANF 237 A P C board held metal B ANF 238 A Wooden cabinet 035 Screw 4 26 011 Washer B21 01 1 0 26 Sx 838 Exploded View 1 DE AR SA 28 NOTICE Any parts asterisked are subject to being not supplied Parts List of Exploded 2 a ome T 29 Dial scale AAG 075 A Dial scale held metal ANF 243 A Dial pointer assembly AAF 031 A Meter Signal amp Tuning AAW 029 0 Lamp box ANH 21 1 B Lamp holder ANG 097 0 Pilot lamp socket AKK 002 0 Pi
4. Operating Instructions Sx 838 Less than 0 2 Less than 0 4 20Hz 15kHz 192 dB 5OHz 10kHz UI dB More than 40dB More than 30dB 65dB 300 Balanced 7582 Unbalanced 120V 60Hz or 110 120 130 220 and 240V switchable 50 60Hz 240W UL approved model only 350W 5 line voltage model only 520 W x175 H x420 D mm 20 1 2 x 6 7 8 x 16 9 16 in 16 2kg 3516 1002 20 3kg 4416 1102 5 line voltage model only 2 FRONT PANEL FACILITIES SIGNAL METER For AM and FM station tunings AM tuning Tune the dial pointer so that the SIGNAL meter needle comes to the extreme right FM tuning Both the SIGNAL and FM TUNING meters work together The optimum point of the SIGNAL meter needle is the same as in AM tuning Then use the FM TUNING meter SPEAKER BUTTONS Each of speaker systems A B and C is connected to each of output terminals A B and C By pushing the following SPKR A Speaker systems A into operation SPKR B Speaker systems B into operation SPKR C Speaker systems C into operation NOTES 1 When any two pairs of the buttons A B B C C A are depressed the corresponding pairs of speaker systems will come into operation However operating all three buttons even though depressed at the same time not possible 2 Only when listening through headphones press again the SPKR button s in use to OFF undepressed from the ON position pressed POWER SWITCH
5. Part No aue Carbon film 2 2M Yow SWITCHES E 225 Lever switch Power ASK 066 0 Lever switch Power ASK 067 0 E Relay ASR 007 0 KCU Fuse holder AKR 008 0 KCU Slide switch ASH 008 0 OTHERS Tuner assembly AWE 041 A Equalizer amplifier assembly AWF 01 1 0 Microphone amplifier assembly AWM 064 0 Control amplifier assembly AWG 029 0 Power amplifier assembly AWH 031 A Protection circuit assembly AWM 025 C Power supply circuit assembly AWR 055 A Switch amp VR assembly AWX 070 0 Switch circuit assembly function AWS 073 0 Switch circuit assembly FM muting AWS 075 0 Switch circuit assembly mode loudness AWS 065 0 Switch circuit assembly filter AF muting AWS 066 0 Switch circuit assembly speakers AWS 074 0 Lamp board assembly AWX 069 0 5P connector assembly AWX 062 0 Wooden cabinet assembly AMM 035 B Phono jack C 6 jacks AKB 016 0 Phono jack A 4 jacks AKB 014 0 Phono jack 1 jack AKB 019 0 Antenna terminal board AK A 002 0 35 5 080 10 ine Binding post for ground AKE 012 A Power transformer ATT 168 A Power transformer ATT 172 0 Ferrite loopstick antenna ATB 026 0 Balun T22 025 A E22 032 0 Pilot lamp 8V 0 3A dial scale
6. RD PM 101 Carbon film Carbon film 6 8k RD PM 682 Carbon film 6 8k 682 Carbon film 6 8k 682 Carbon film 6 8k RD PM 682 51 Control Amplifier Assembly Carbon film 560k RD PM 564J Carbon film 560k RD PM 564 Carbon film 100k RD PM 104J Carbon film 100k RD PM 104 Carbon film RD 4PM 182 Carbon film RD PM 182 Carbon film 100 RD PM 101 Carbon film 100 RD PM 101 Carbon film 2 7k RD7PM 272 Carbon film RD PM 272 Carbon film RD PM 682 Carbon film 6 8k RD PM 682 Carbon film 330 RD PM 331 Carbon film 330 RD PM 331 Carbon film 220k RD PM 224 Carbon film RD PM 224 SWITCHES S1 Lever switch Turn over low ASK 07 1 0 S2 Lever switch Turn over high ASK 069 0 52 Control Amplifier Assembly 3 100 50 a 1 a 2SC1451 o Rag Ras 47 1W L 2 uH 19 000 RA 20 gue 1 Rag 0 5 SW V L 0 HMV A18W3SSV 3 1114 H3MOd 9 EL AN ZE x 2SC1451 7 2SA726 2SD287 AF EK 2SC1079 a T 2SC1116 Qu 9 Foil Side AWH 031 A Parts List of Power Amplifier Assembly AWH 031 A SEMICONDUCTORS Transistor 2SA726 F or G Transistor 2SA726 F or G Transistor 2SA726 F or G Transistor 2SA726 F or G Transistor 2SC1451 V or B Transistor 2SC1451 V or B Transistor 2SB528 C or D Transi
7. Pilot lamp 8V 0 3A meter AEL 015 0 Pilot lamp 8V 50mA position AEL 022 0 Pilot lamp 8V 50mA position AEL 024 0 Fuse 4A AC power AEK 100 0 Fuse 3A protection AE K 101 0 Fuse 1A protection AEK 106 0 Fuse 2A AC power AEK 103 0 Fuse 4A protection AEK 202 0 AC socket AKP 005 0 Speaker output terminal AKE 014 0 Phone jack Headphone K72 026 0 Jumper plug AKM 004 A Fuse holder AC power AKR 001 0 Pilot lamp socket AKK 002 0 AC power cord ADG 004 0 AC power cord ADG 005 0 FM antenna ADH 002 0 Operating instructions ARB 101 0 Packing case AHD 213 A AH A 066 A AHA 067 A AHC 014 A Side pad L Side pad R Inside packing 36 Miscellaneous Parts List 16 FM ANT TO AM LOCAL B TO 8 MUT DET MPX 3SK45 Q 3SK45 9 HA1201 2 u Ue Es 3 G n S amp b 2 pa 2 va 6 ate E gt a gt elo a c 7 77 27 d Q T MET 18 2 MUT T Y auto 99 8 1 w 3 31 gen dein WS SOK Rse47K 10 MULT 1 PATH 204 MPX B gt 13 1V a E 8 125 0 5 Cas 5 3 L OUT 1 5 E w o t 2 x m 2 8 58 i OR OUT 1 yn e T 0 amp 2 a 012 77 iw 838 2SA763
8. 151850 Ce 0 01 19 MA 21 22 0 23 07 151885 125V SX B38 Parts List of Power Supply Circuit Assembly AWR 055 0 SEMICONDUCTORS Transistor 2SD313 E Transistor 2SD313P E or D Transistor 25 945 or Diode SR3AM 8 Diode SR3AM 8 Diode SR3AM 8 Diode SR3AM 8 Diode 1S1886 Diode 1S1850 Diode 1S1885 Zener diode WZ 130 Zener diode WZ 130 RESISTORS Carbon film YAW RD7PS 221 Metal oxide 796 1W RS1P 222K Wire wound 220 5W RT5B 221K Carbon film 1 5k RD PS 152 Carbon film RD PS 152 Carbon film RD PS 332 Carbon film 27k RD PS 273J Carbon film 18k RDXPS 183 Carbon film 4 7 RD PS 4R7J Carbon film RD PS 361 RD PS 512 RD PS 182 Carbon film Carbon film CAPACITORS Ceramic 0 01 150V ACG 004 0 Ceramic 0 01 150V ACG 004 0 Ceramic 0 01 150V ACG 004 0 Ceramic 0 01 150V ACG 004 0 Ceramic 0 01 150V ACG 004 0 Ceramic ACG 004 0 Ceramic 0 01 150V ACG 004 0 Electrolytic 470 80V ACH 038 0 Electrolytic 470 SOV ACH 038 0 Electrolytic 100 50V CEA 101P 50 Electrolytic CEA 101P 50 Electrolytic 220 16V CEA 221P 16 Electrolytic 2 200 10V CEA 222P 10 Electrolytic 220 50V CEA 221P 50 Electrolytic 470 16V CEA 471P 16 CCDSL 101K 50 Ceramic 63 13 9 SWITCH amp VOLUME ASSEMBLY AWX 070 0 D RARE Ee 0 19
9. 0 18 2 MAC cc k 13 11 61 AUX 35 36 MIC PHONO 2 31 PHONO 1 38 FM 33 AM 6 o PWE TI oe ewa aw amp 9 NO 4 6 oo PG 50 0 ELO SMV 103 Parts List of Switch Circuit Assembly AWS 073 0 SWITCH AND RESISTORS 5 Push switch Carbon film Carbon film Carbon film Carbon film Carbon film Carbon film Carbon film Carbon film Carbon film Function 2 2k 2 2k 2 2k 2 2k 2 2k 2 2k 2 2k 2 2k 100 ASG 069 A RD PM 222 RD PM 222 RD PM 222 RD PM 222 RD PM 222 RD PM 222 RD PM 222 RD PM 222 RD 4PM 101 69 13 11 SWITCH CIRCUIT ASSEMBLY AWS 065 0 N FF 0 Foil Side AWS 065 0 70 Parts List of Switch Circuit Assembly AWS 065 0 SWITCH C1 C2 C3 C4 R1 R2 Description Mylar Mylar Ceramic Ceramic carbon film carbon film ASG 063 0 COMA 273J 50 273J 50 CCDSL 121K 50 CCDSL 121K 50 RD PS 103 RD PS 103 71 13 12 SWITCH CIRCUIT ASSEMBLY AWS 066 0 TONS Foil Side x E x ap 22 Ro 51K Re SIK LOW FIL HIGH FIL SWITCH Push switch filter AF muting ASG 062 0 COMA 6
10. 2SA763P F E 43 Parts List of Equalizer Amplifier Assembly RESISTORS Carbon film 3 3k RD PS 332 Carbon film 3 3k RD 4PS 332 Carbon film 68k RD PS 683 Carbon film 68k RD APS 683J Carbon film RD PS 154 Carbon film 150 RD PS 154 Carbon film 1k RD 4PS 102 Carbon film 1k RD PS 102 Carbon film 18k RD PS 183 Carbon film RD PS 183 Carbon film 36k RD APS 363 Carbon film 36k RD7PS 363 Carbon film 6 8k RD PS 682 Carbon film 6 8k RD PS 682 Carbon film RD PS 222 Carbon film RD PS 222 Carbon film 5 6 RD PS 562 Carbon film 5 6k RD PS 562 Carbon film 470k RD PS 474 NL Carbon film RD PS 474J NL Carbon film 1k RD PS 102 Carbon film 1k RD7PS 102 Carbon film 560k RD PS 564 NL Carbon film 560k RD PS 564J NL Carbon film RD PS 913 RD PS 913 RD PS 114 RD PS 114 Carbon film 91k Carbon film 110k Carbon film SEMICONDUCTORS Transistor 2SA725 F or G 2SA763P 5 or 6 Transistor 2SA725 F or G 2SA763P 5 or 6 Transistor 2SC1313 G or F 2SC1345 E or D Transistor 2SC1313 G or F 28C1345 E or D Transistor 2SC1313 G or F 28C1345 E or D Transistor 2SC1313 G or F 2SC1345 E or DI 44 5 CAPACITORS Electrolytic CSSA 010M 25 Electrolytic i av CSSA 010M 25 Ceramic 100p 5
11. 13 5 CONTROL AMPLIFIER ASSEMBLY AWG 029 0 gt 2 oe 25 e ou ou LA ac 22 C40 YA Fin WOO cry E Q 9700 E 2 g 0 0 NN e ANM NININ x93 My GS y9 9 co ue LA sO 5 5 O a 5 T qS 5 a mx tp e TS gt 5 578 x 9 x D ac gt t A a F oc e at 0 0 O WI Wi FH wy A 200 200 200 200 700 t n 2 815 9291 227 ci 800 HAN NZZ X E 94 doi MK 901 43 LE 01 001 9 0 x Cd A 8 SZ O0l f Gn t al ve yee oly 4 YZZ 1 b se OL Is 48 6 25 1344 Foil Side AWG 029 0 d K 41 35 36 47 35 7 6 00 kuny GAN ro Ri2 39K 08 10 25 o H 9 Rig36K 1 Ho kal e Q4 Go 22 K30 2SA725 Rag 6 8K VR2 a VR2 100KB w 4 R54 220K R46 100 2SA725 2961312 2561312 94 o akt TURNOVER o O o C27 0 0015 2500015 Q A A A o0 R53 220K S R45 100 10 25 R43 1 8K Ris 36K PY Q A A 9 one 2SC1312 Ri910K 7 ee OF R21 1K tub 100KB Aa 0 URNOVER LOW Si
12. Switch circuit assembly function Switch circuit assembly mode loudness Shield cover Speaker output terminal AC socket 5P connector assembly Fuse holder Fuse holder Phono jack A 4 jacks Phono jack C 6 jacks Phono jack 1 jack Antenna terminal board Rear panel Rear panel Rear Panel AC power cord AC power cord AC cord grommet Connector AC power Model name plate Model name plate Model name plate Binding post for ground Ferrite antenna holder assembly Ferrite loopstick antenna Antenna clamper AC cord grommet ANG 103 0 AND 073 B ANG 102 A AEC 101 0 M49 025 E AEB 057 A AEL 023 0 ANG 104 0 AEC 101 0 M49 025 E AN F 249 0 AWS 075 0 AXA 056 0 AWS 074 0 AWS 066 0 AWS 073 0 AWS 065 0 ANF 233 0 AKE 014 0 AKP 005 0 AWX 062 0 AKR 008 0 AKR 001 0 AKB 014 0 AKB 016 0 AKB 019 0 AKA 002 0 ANC 107 D ANC 112 B ANC 114 0 ADG 005 0 ADG 004 0 AEC 079 0 AKP 008 0 AAL 186 0 AAL 202 0 AAL 188 0 AKE 012 A AXB 001 A ATB 026 0 AEC 154 0 AEC 079 0 Sx 838 Exploded View 2 32 13 SCHEMATIC DIAGRAMS P C BOARD PATTERNS AND PARTS LIST 13 1 CIRCUIT CONNECTION DIAGRAM AND MISCELLANEOUS PARTS A SPEAKER IND CATOR 4CH MPX OUT PUNTER SP A SP B SP C FUNCTION SWITCH ASS y AWS 073 7 3 TUNER Assy AWE 041 si T FUNCTION SWITCH ASS y 2 3545 Yeu LT Dum li ju
13. Carbon film RD PS 105 Carbon film e RDWVS 182 Carbon film 5 6k RD PS 562 Carbon film 27 RD AVS 270 Carbon film 150 RD VS 151 RD PS 123 Carbon film 220k RD AVS 224 Carbon film 22 RD VS 220 Carbon film 150 RD PS 151 Carbon film 4 7k RD VS 472 RD VS 103 Carbon film 1k RD VS 102 Carbon film 1k RDWVS 102 Carbon film 22 RD VS 220 Carbon film 100 RD PS 101 RD PS 101 Carbon film 330 RD PS 331 Carbon film 330 RD PS 331 Carbon film 560k RD PS 564 Carbon film 330 RD PS 331 RD PS 123 Carbon film 220k RD VS 224 Carbon film 10k RD PS 103 Carbon film 330 RD PS 331 Carbon film 2 4k RD VS 242 RD PS 163 Carbon film 2 2k RD PS 222 Carbon film 47k RD PS 473 Carbon film 100k RD PS 104 Carbon film 5 6k RD PS 562J RD PS 562 Carbon film 15k RD VS 153 Carbon film 150 RD PS 151J Carbon film 3 3k RD VS 332 Carbon film 10 RD7VS 100 Carbon film 10 RD PS 100 RD PS 104 Carbon film 10 RD PS 100J Carbon film 10 RD PS 100J Carbon film 3 3k RD PS 332 Carbon film 3 3k RD PS 332 RD PS 182 Carbon film 1 8k RD PS 182 Carbon film 18k RD PS 183 Carbon film 18k RD PS 183 Carbon film 3 9k RD PS 392J Continued on the Next Page Carbon film 3 9k RD PS 392 Carbon film 3 9k RD PS 392 Carbon film 3 9k RD PS 392 Carbon film 1 2k R
14. Turn this switch ON but wait for some 3 to 6 seconds during the silence of which the protection circuit elimi nates the unpleasant noise not imputed to a receiver fault PHONES OUTPUT JACKS Accepts stereo headphones BASS CONTROL Clockwise rotation gives stronger emphasis of the bass range below the turnover frequency which is selected by the BASS TURNOVER switch Counterclockwise rota tion reduces bass response This control knob has click stops BASS TURNOVER SWITCH This switch selects the frequency below which the bass tone control will begin to act This turnover frequency can be set at 400Hz or 200Hz to match the character istics of the room the program material or your personal listening preferences LOW CUT HIGH CUT BUTTONS When the low pitched rumble turntable motor or other source is obtrusive de press the LOW CUT button to ON In no interference leave it undepressed OFF When the high frequency scratch noise 254 records or other source is much depress this button to ON In no interference leave it undepressed OFF M TUNING METER While getting the SIGNAL meter needle going to the right make fine adjustment with the FM TUNING meter whose needle comes to the center indicating the optimum reception FM STEREO INDICATOR L mec wp lam lwo oa TTT TREBLE TURNOVER SWI
15. 2 _ A 1 i 5 IN gt a 2801913 FILTER MUTING Assy AwS 066 Voti Siaa Sisa Siwa a o Rw j T RCH Sio 6 1 Sw MUMNG J SWITCHES Sm SPEAKER NOTES 1 FUNCTION Si Se SPEAKER Neither switch S24 Capacitors Cs amp Cy are provided for H AM SPEAKER C FTZ approved unt fi 157 04115 4 25 2 Sm POWER No switch Szs is provided for 120V unit but capacitors Cs wo POE 3 PHONO 1 Sii RELAY are provided E S4 PHONO 2 REC SELECTOR FM POSITION 5 1 FM Di 152473 8 AUX 2 PHONO Sa MON 1 3 SOURCE I 58 MON 2 4 TAPE DUPLICATE Mi i Sa NR ADAPTOR i oh g MON 23 M MUTING 7 Sn LOUDNESS DE EMPHASIS OUS Sq TURN OVER LOW 5 z 54 TURN OVER HIGH 5 54 LOW FILTER z 58 HIGH FILTER amp SWITCHED UNSWITCHED si 100W TOTAL 200W MAX 33 94 e CAPACITORS IN uF UNLESS OTHERWISE NOTED p pF e RESISTORS INQ UNLESS OTHERWISE NOTED ka M MQ Miscellaneous Parts List CAPACITORS Electrolytic 8 000 50V ACH 015 0 Electrolytic 8 000 50V ACH 015 0 Electrolytic 1 000 63V ACH 001 C Ceramic 0 01 50V CKDYF 103Z 50 Ceramic 0 01 250V ACG 001 0 Ceramic 0 01 250V ACG 003 0 Ceramic 0 01 250V ACG 001 0 Mylar 0 0007 50V COMA 472J 50 Mylar 0 0047 50V COMA 472J 50 RESISTOR
16. 79 ao 01 900013 0 300 VY91 8 24 23 01 0022 mo 151850 09 Oly uy Ly 54 pe 8 ZIY pr 08 V V AUC tu WZ 130 08 027 08 01 e 69 85 a oio nu vi 1 5 o H o 10022 Wveus 10 lt 912 W 0 100 12 e cc 100 72 nveys 100 o LL GxX 838 80 Parts List of Power Supply Circuit Assembly AWR 064 0 SEMICONDUCTORS Transistor 2SD313 E Transistor 2SD313P E or D Transistor 2SC945 Q or R Diode SR3AM 8 Diode SR3AM 8 Diode SR3AM 8 Diode SR3AM 8 Diode 151886 Diode 1S1850 Diode 1S1885 Zener diode WZ 130 Zener diode WZ 130 RESISTORS Carbon film YW RD PS 221 Metal oxide E 1W RS1P 222K Wire wound 220 5W RT5B 221K Carbon film 1 5k RD PS 152 Carbon film RD PS 152 Carbon film RD PS 332 Carbon film 27k RD PS 273 Carbon film 18k RD PS 183 Carbon film 4 7 RD PS 4R7J Carbon film RD PS 361 RD PS 512 RD 4PS 182 Carbon film Carbon film CAPACITORS C1 Ceramic 0 01 150V ACG 004 0 Ceramic 0 01 150V ACG 004 0 Ceramic 0 01 150V ACG 004 0 Ceramic 0 01 150V ACG 004 0 C
17. 8ES XS Parts List of Control Amplifier Assembly SEMICONDUCTORS jm CAPACITORS FET 2SK30 Y Transistor 2SA725 F orG Transistor 2SA725 F orG Transistor 2SC1312 F or G 2SC1344 D or E Transistor 2SC1312 F or G 2SC1344 D or E Mylar 50V COMA 104K 50 Mylar 0 50V 104K 50 Electrolytic 47 35V CEA 470P 35 Electrolytic 47 35V CEA 470P 35 Ceramic 47p 50V CCDSL 470K 50 Ceramic CCDSL 470K 50 Electrolytic 10 25V CSZA 100P 25 Electrolytic 10 25V CSZA 100P 25 Ceramic 82p 50V CCDSL 820K 50 Ceramic 82p 50V CCDSL 820K 50 CCDSL 100K 50 Ceramic Ceramic 10p 50V CCDSL 100K 50 Electrolytic 100 10V CEA 101P 10 Electrolytic 100 10V CEA 101P 10 Electrolytic 4 7 25V CEANL 4R7P 25 Electrolytic CEANL 4R7P 25 Mylar 0 02 50V COMA 203J 50 Mylar 0 02 50V COMA 203J 50 Mylar 0 02 50V COMA 203J 50 Mylar 0 02 50V COMA 203J 50 Mylar COMA 203J 50 Mylar 0 02 50V COMA 203J 50 Mylar 0 02 50V COMA 203J 50 Mylar 0 02 50V COMA 203J 50 Mylar 0 0015 50V COMA 152J 50 Mylar COMA 152J 50 Mylar 0 0015 152 50 Mylar 0 0015 50V COMA 152J 50 Electrolytic 10 25V CSZA 100P 25 Electrolytic 10 25V CSZA 100P 25 CSZA 100P 25 Electrolytic Electrolytic 10 25V CSZA 100P 25 Ceramic 10p 50V CCDSL 100K 50 Ceramic 10p 50V CCDSL 1
18. AUX jnput jacks IC INPUT JACK Accepts the plug of the microphone VOLUME CONTROL Governs both the volume of sound outputs from the speaker systems and from the headphones BALANCE CONTROL Adjusts the balance between the sound volume from the left and right speaker systems DOLBY NR ADAPTOR SWITCH When employing Dolby Noise Reduction Adaptor depress this DOLBY NR ADAPTOR to ON TAPE MONITOR 1 2 SWITCHES Monitor the recorded sound while recording with a tape deck Also possible to play back tapes as follows EE With a tape deck connected to the TAPE 1 jacks REC and PB either monitoring of recording in progress of playing back is possible RS With tape deck connected to the TAPE 2 jacks REC and PB or REC PB con nector the same as in 1 above is possi ble 3 CONNECTION DIAGRAM OUTDOOR T TYPE FM FM ANTENNA ANTENNA AM ANTENNA TURNTABLE TURNTABLE l g es gt 4 3000 feeder 750 coaxial cable Connect to ground terminal of turntables tape decks etc 4 H MPX DOLBY NR ADAPTOR OuTFUT GND e PRE POWER AMP PRE OUT POWER IN e mo AM FERRITE ANTENNA For connecting For connecting 4 channel discrete Dolby NR FM broadcast adaptor adaptor FM DE EMPHASIS SWITCH In some countries the receiver PRE POWER AMP is delivered with a selector switch The bridge connecting plus for adjusting the FM de emphasis between PRE OUT and POWER fro
19. CM 8888808 D D D a D q D D en Q 418 i 5 2 o L VA 300 A LAMP ASS y db db db db i pon 5 xo ssc Li ig T 34 35 36 37 LE 3 3 3 3 3 3 AM FM PHONO PHONO PRAN j AUX FUNCTION INDICATOR SPEAKER SWITCH Assy AWS 074 4 SWITCH ASS y gt d AWS 075 fou El Sm So p Su OFF 0 POWER SUPPLY CIRCUIT ASS y AWR 064 4 j D la 1 an i 1 1 an e AC 50 60 VIOLET 8 Seri pu 4 d 4 8 REEN EZ 1 lt a CONTROL ASS y AWG 028 PROTECTION CIRCUIT ASS y 14 LAMP Ass 1 y TREBLE CONTROL 03 04 28C845 x2 ROL Ri 2 2K Rp 2 2K 4 mus Qs 254733 Ray ISK VR VOLUME CONT a LA 5 1 2 gn im RsI8K 4 3 00 O p EE P x j MNT e iE 2264725 mwen POWER Ass y 031 2SA726 5 3 Ra 24K x g a SWITCH _ AWS 065 An E 1 SN e a 28C1313 mon mou 7 Fas Se MUTING a TAF Sm SPEAKER A 1 1 56 SPEAKER B Si AM Sw SPEAKER C 8 152473 2 2 FM Sa POWER 4 8 3 PHONO 1 Si RELAY 3
20. DIAGRAMS P C BOARD PATTERNS AND PARTS LIST 13 1 Circuit Connection Diagram and Miscellaneous Parts 33 13 2 oh TANW EE w koun ai kn STRE UE XO 37 13 3 Equalizer Amplifier Assembly 011 43 13 4 Microphone Amplifier Assembly AWM O64 46 13 5 Control Amplifier Assembly 029 48 13 6 Power Amplifier Assembly 031 53 13 7 Protection Circuit Assembly AWM 025 58 13 8 Power Supply Circuit Assembly AWR O55 61 13 9 Switch amp Volume Assembly 070 64 1310 AWS O73 67 13 31 Switch Circuit Assembly AWS 08B 70 13 12 Switch Circuit Assembly AWS OGG 72 1333 Swen Girodit Awembiy AWSO74 73 13 14 Switch Circuit Assembly AWS O75 74 13 15 SP Connector Assembly AWX OG2 74 14 SCHEMATIC DIAGRAMS P C BOARD PATTERN AND PARTS LIST FOR 220V ONLY MODEL 14 1 Circuit Connection Diagram and Miscellaneous Parts 14 2 Power Supply Circuit Assembly AWR 064 1 SPECIFICATIONS SEMICONDUCTORS FETS ASSO 4 IOS ASAS 4 THafi iSTONS 43 BOS DA 24 AMPLIFIER SECTION Continuous Power Output 20Hz 20kHz Both channels driven 5
21. RD PS 272 Carbon film RD PS 272 Carbon film RD PS 272 Carbon film i RD PS 272J Carbon film RD PS 153 Carbon film RD PS 153 Carbon film RD PS 153 Carbon film RD PS 153 Carbon film RD PS 473 Carbon film RD PS 473 Carbon film RD PS 222 Carbon film a RD PS 222 Carbon film RD PS 153 Carbon film RD PS 153 Carbon film RD PS 820 Carbon film RD PS 820 Carbon film RD PS 562 Carbon film RD PS 154 Carbon film RD PS 153 Carbon film RD PS 153 59 Carbon film 68k RD PS 683 Carbon film 12k RD PS 123 Carbon film 15k 0 153 Carbon film 2 2k RD PS 222 Carbon film 68k RD PS 683 RD PS 220 RS1P 221 RD PS 473 Carbon film Metal oxide 220 1W Carbon film 47k CAPACITORS C1 Electrolytic CSSA R22M 10 C2 Electrolytic CSSA R22M 10 C3 Electrolytic CEA 331P 6 C4 Electrolytic CEA 331P 6 C5 Electrolytic CEA 4R7P 25 C6 Electrolytic CEA 101P 16 60 Protection Circuit Assembly 13 8 POWER SUPPLY CIRCUIT ASSEMBLY AWR 055 0 D GQ C4 0 01X4 s n WZ 130 gt gt 61 c9 2SC945 250313 Foil Side AWR 055 0 Ri 71 oi co E d je a D5 1S1886 250313 25 945 loop 250313 o N Ra 1 5K Rs 1 5K C2 0 01 k D8 Wz 130 Gu 100 50 D3 SR3AM Di SR3AM a e x 001 D uw uw 10 11 12 13
22. S PHONO 2 SELECTOR FM POSITION Qs g Ss MIC 1 FM EM UN 6 AUX 2 PHONO a 2 4 Sa MON 1 3 SOURCE Sg TAPE MON 2 4 TAPE DUPLICATE aai 2861451 5 Ss NR ADAPTOR A 5 MONO 3 FM MUTING Sn LOUDNESS Su DE EMPHASIS Sq TURN OVER LOW Sig TURN OVER HIGH Sa LOW FILTER HIGH FILTER 75 76 e CAPACITORS IN uF UNLESS OTHERWISE NOTED p pF e RESISTORS INQ UNLESS OTHERWISE NOTED M MQ Miscellaneous Parts List CAPACITORS Ew sr Electrolytic 8 000 50V ACH 015 0 Electrolytic 8 000 50V ACH 015 0 Electrolytic 1 000 63V ACH 001 C Ceramic CKDYF 103Z 50 Ceramic ACG 001 0 Ceramic CKDYF 103Z 50 SWITCHES T S1 Lever switch Power ASK 068 0 Relay ASR 007 0 OTHERS mw lt Tuner assembly AWE 041 A Equalizer amplifier assembly AWF 01 1 0 Microphone amplifier assembly AWM 064 0 Control amplifier assembly AWG 029 0 Power amplifier assembly AWH 031 A Protection circuit assembly AWM 025 C Power supply circuit assembly AWR 064 0 Switch amp VR assembly AWX 070 0 Switch circuit assembly function AWS 073 0 Switch circuit assembly FM muting AWS 075 0 Switch circuit assembly mode loudness AWS 065 0 Switch circuit assembly filter AF muting AWS 066 0 Switch circuit assembly speakers AWS 074 0 Lamp loard
23. assembly AWX 069 0 5P connector assembly AWX 062 0 Wooden cabinet assembly AMM 035 B Phono jack C 6 jacks AKB 016 0 Phono jack A 4 jacks AKB 014 0 Phono jack 1 jack AKB 019 0 Antenna terminal board AKA 002 0 si a Zamaa Binding post for ground AKE 012 A Power transformer ATT 181 0 Ferrite loopstick antenna Balun ATB 026 0 T22 025 A E22 032 0 AEL 015 0 AEL 022 0 AEL 024 0 Pilot lamp 8V 0 3A dial scale Pilot lamp 8V 0 3A meter Pilot lamp 8V 50mA position Pilot lamp 8V 50mA position Fuse 3 15A protection Fuse 1A protection Fuse 2A protection Pilot lamp 6V 30mA stereo indicator AEK 042 0 E21 031 0 AEK 017 0 AEL 014 0 AKE 014 0 Speaker output terminal Phone jack Headphone K72 026 0 Jumper plug AKM 004 A Fuse holder protection K91 088 C PL socket AKK 002 0 Connector AC power AKP 008 0 FM antenna ADH 002 0 Operating instructions English ARB 101 0 Operating instructions French German ARD 067 0 Packing case AHD 213 A Side pad L Side pad R Inside packing AH A 066 A AH A 067 A AHC 014 A 78 Miscellaneous Parts List 14 2 Power Supply Circuit Assembly AWR 064 0 WZ 130 r 1 gt 2SC945 2SD313 or lt g 13 sm gt
24. lt mrs c Aib Butfer amplifier Tone contro ry Control amplifier bou 5 PHONO 2 AUX a ce SWITCHES Pk S1 FUNCTION Sis TURN OVER LOW 22 1 52 4 FM 14 TURN OVER HIGH 2 3 PHONO 1 15 LOW FILTER S4 PHONO 2 516 HIGH FILTER 5 MIC S1 AUDIO MUTING S6 AUX Sip SPEAKER A S7 SELECTOR 519 MEE 8 39 TAPE MONITOR 2 21 POWER 9 21 W HEA Se NR ADAPTOR 5 FM MUTING J EADPHONES 4 512 LOUDNESS 5 CIRCUIT DESCRIPTION Signal Path 1 The FM broadcast signal waveform from the antenna is fed to the two dual gate MOS field effect transistor in the front end section for radio frequency amplification This signal is converted into an inter mediate frequency by the dual gate MOS FET mixer stage in combination with the signal from the local oscillator The intermediate frequency signal con verted within the front end section is fed to three ceramic filters and two ICs where it is tuned amplified and detected becoming a audio frequency composite signal The composite signal following detection is fed to the 4CH MPX terminal jack and the multiplex decoder stage The multiplex decoder stage uses one IC for three functions to demodulate the composite signal into the left and right channel stereo signals to operate the automatic mode switching between stereo mono and to switch the stereo indicator lamp appropriately The decodi
25. lt ART 045 0 gt SERVICE MANUAL AM FM STEREO RECEIVER MODEL SX 838 COMES IN THREE VERSIONS DISTINGUISHED AS FOLLOWS Round label on rear panel KCU 120V only UL U S A and CSA Canada approved Voltage F 5 position selector General export model GN 220V only SEMCO Sweden NEMCO Norway and DEMCO Denmark approved PIONEER SX 838 CONTENTS About 220V only model labeled GN This model whose rear panel is labeled circular mark operates only on 220 substantially in its circuit design from two other models When repairing this model please see the manual on page 75 and the followings which include such items as Circuit connection diagram Miscellaneous parts list Schematic diagram of power supply circuit assembly P C board pattern and its parts list Before servicing also please do not fail to check to see if the mark is labeled on the rear panel 3 2 a kw ew 5 3 DIAGRAM 7 E A SR O RENE 9 11 6 PACKING METHOD AND PART NUMBERS 12 ca 13 14 9 eb 0 0 0000 LUGATIQNS CT 15 17 n oec ALIGNMENT PROCEDURE 11 18 112 22 26 13 SCHEMATIC
26. 0 50 852 60W 60 422 55W 55W 82 Both channels driven 70W 70W 4 2 Harmonic Distortion 20Hz 20kHz Continuous Power Output Less than 0 3 1W 1W Power Output Less than 0 05 Intermodulation Distortion Continuous Power Less than 0 3 00 9 1W 1W Power Output Less than 0 05 Power Bandwidth IHF Both channels GEINOR 5Hz 40kHz 0 3 Frequency Response 10Hz 70kHz Input Sensitivity Impedance POWER AMP IN 1V 50kQ2 Output Speaker 492 1622 Headphone 4716 Damping Factor THe BEL oett Ms More than 45 Hum amp Noise IHF short circuited A Network UN More than 110dB Residual Hum amp Noise 80 Pre amp Power simplifier Less than 1mV PREAMPLIFIER SECTION Input Sensitivity Impedance PHONO 3 52 2 5mV 50KX2 PHONO DS SAGES 260662 PHONO Overload Level Ei e e 170mV 480mV MIQ Z er 200 2 150mV 80KX2 TPE PB 1 2 788 186066602 TAPE PB 2 DIN CONTOCTON sii eti i 150mV 80kX Output Level Impedance REG 1 2 150mV TAPE REC 2 DIN connector 30mV 80kQ PRESO 1V 2kQ Harmonic Distortion 20 20 2 Less than 0 1 Frequency Response PHONO RIAA equalization 30Hz 15kHz 0 3dB AUX TAPE PB u S Q 15Hz 40kH
27. 00K 50 Electrolytic 100 6V CEA 101P 6 50 Electrolytic 100 CEA 101P 6 Electrolytic 47 on CEA 470P 35 Electrolytic 47 35V CEA 470P 35 Electrolytic 2 2 25V CSZA 2R2M 25 Electrolytic 2 2 CSZA 2R2M 25 RESISTORS AND POTENTIOMETERS Variable resistor 100k B ACV 136 0 Variable resistor 100k B ACV 136 0 Carbon film 1 8k RD PM 182J Carbon film 1 8k RD7APM 182 Carbon film 47k RD PM 473J Carbon film 47k RD PM 473 Carbon film 1M RD PM 105 Carbon film 1M RD PM 105 Carbon film 56k RD PM 563 Carbon film 56k RD PM 563J RD PM 123J Carbon film Carbon film 12k RD PM 123 Carbon film 3 9k RD APM 392 Carbon film 3 9k RD PM 392 Carbon film 22k RD PM 223 223 Carbon film Carbon film 36k RD PM 363 Carbon film 36k RD PM 363 Carbon film 4 7k RD PM 472J Carbon film 4 7k RD PM 472J RD PM 103 Carbon film Carbon film 10k RD PM 103 Carbon film 1k RD 4PM 102 Carbon film 1k RD PM 102 Carbon film 22k RD PM 223J Carbon film RD PM 223J Carbon film 22k RD PM 223 Carbon film 22k RD PM 223 Carbon film 1M RD PM 105 Carbon film 1M RD PM 105 Carbon film RD PM 105 Carbon film 1M RD PM 105 Carbon film 12k RD PM 123 Carbon film 12k RD PM 123 Carbon film 100 RD PM 101
28. 052 JA LC 9c q lt YOST 0 LI a t YA A e CD a 0 0 A E E 4 64 39 Side AWX 070 0 4 S o o PSI pe Re 22K A Ra 2 2K o P9 s o x o Ra 2 2K 2 2K 6 o o o 02 ANT o o o O P 2 2K O o 0 A A A o0 o 026 Oo 06 GO OO OO OO OO OO OO OO OO 1 2 3 4 5 6 8 9 W n 12 13 _ UG 1W MR 3 Sx 838 Parts List of Switch amp Volume Assembly AWX 070 0 Variable resistor 250k HB Balance ACV 135 0 Variable resistor 250k B1 Volume ACV 134 0 Rotary switch Rec selector ASD 017 0 Lever switch Monitor 1 ASK 072 0 Lever switch Monitor 2 ASK 072 0 Lever switch NR adaptor ASK 072 0 Carbon film 2 2k RD 4PS 222 Carbon film 2 2k RD PS 222 Carbon film 2 2k RD PS 222 Carbon film 2 2k RD PS 222 Carbon film 2 2k RD PS 222 Carbon film 2 2k RD PS 222 Carbon film 2 2k RD PS 222 Carbon film 2 2k RD PS 222 66 13 10 SWITCH CIRCUIT ASSEMBLY AWS 073 0 ii 34 30 Sie 26 e eksitan ERE IC 23 22 21 19 20 2
29. 0V CCDSL 101K 50 Ceramic 100p 50V CCDSL 101K 50 Ceramic 82p 50V CCDSL 820K 50 CCDSL 820K 50 Ceramic Electrolytic 330 6V CEA 331P 6 Electrolytic 330 6V CEA 331P 6 Ceramic 4p 50V CCDSL 040D 50 Ceramic 4p 50V CCDSL 040D 50 Electrolytic CEANL 25 Electrolytic 3 3 25V CEANL 3R3P 25 Styrol 0 0051 50V CQSA 512G 50 Styrol 0 0051 COSA 512G 50 Styrol 0 0015 50V CQSA 152G 50 COSA 152G 50 CEA 101P 25 CEA 221P 16 Styrol Electrolytic 100 25V Electrolytic 220 16V 45 Equalizer Amplifier Assembly 13 4 MICROPHONE AMPLIFIER ASSEMBLY AWM 064 0 46 Sx 838 Parts List of Microphone Amplifier Assembly OTHERS TWS Phone jack Microphe AKN 007 0 Transistor 2SC1344 E or D 2SC1312 G or F Transistor 2SC1344 E or D 2SC1312 G or F Ceramic 50V CKDYF 103Z 50 Electrolytic 35V CEA 221P 35 Electrolytic 16V CSSA R47M 16 Ceramic 50V CCDSL 101K 50 Ceramic 50V CCDSL 300K 50 Electrolytic 6V CEA 221P 6 Electrolytic CEANL R47P 50 RESISTORS R1 1k Carbon film Carbon film 91k Carbon film 180k Carbon film 120k Carbon film 1k R DPM 102 RD PM 913 RD PM 184 RD PM 124 RD PM 102 RD PM 623 RD PM 304 RD PM 183 RD PM 272 RD PM 222 Carbon film Carbon film 300k Carbon film 18 Carbon film 2 7 Carbon film 2 2 RD PM 683 Carbon film 47
30. 0V CKDYF 502Z 50 C58 Electrolytic 10 16V CEA 100P 16 C59 Ceramic 0 04 50V CKDYF 403Z 50 C60 Electrolytic 0 1 25V CSSA OR1M 25 C61 Ceramic 0 01 50V CKDYB 103K 50 C62 Ceramic 0 01 50V CKDYB 103K 50 C63 Electrolytic 220 16V CEA 221P 16 C64 Ceramic 0 005 50V CKDYF 502Z 50 Continued on the Next Page 41 Tuner Assembly SEMICONDUCTORS FET 3SK 45 B FET 3SK45 B Transistor 2SC717 Transistor 25 461 HA1201 IC HA1137 IC HA1138 IC HA1156 Transistor 25 945 or S Transistor 2SA763P 6 or 5 2SA725 F or G Transistor 2SA763P 6 or 5 28A725 F or G Transistor 2SC945 Q S Transistor 2SC945 Q or S Diode 192076 Diode 192076 COILS FILTERS AND TRANSFORMERS T1 FM antenna coil ATC 021 0 T2 FM RF coil ATC 015 0 T3 FM RF coil ATC 016 0 T4 FM OSC coil ATC 022 0 T5 FM matching transformer ATE 008 0 T6 FM IF transformer T73 035 A Ty AM RF coil ATB 014 0 T8 AM OSC coil ATB 013 0 F1 FM ceramic filter ATF 013 B F2 FM ceramic filter ATF 013 B F3 FM ceramic filter ATF 013 B F4 AM ceramic filter ATF 009 0 F5 Low pass filter ATF 019 0 L1 Choke coil ATH 007 0 L2 RF choke coil T24 028 A L3 RF choke coil T24 028 A L4 RF choke coil T24 028 A L5 RF choke coil T24 028 A 42 Tuner Assembly 13 3 EQUALIZER AMPLIFIER ASSEMBLY AWF 011 0 l a 5 Foil Side AWF 011 R23 3K 0 055 Cr45100P Cig 1500P EAN 0 SX 838 2SA725 2561313 sesi GJ 2SC1345
31. 2 The one end of the string to the spring on the TUNING pulley attached to the tuning capacitor 3 Lead the string around pulley A then wind it three turns around the TUNING shaft 4 Lead the string around pulleys B C and D then wind it 1 1 2 turns around the TUNING pulley 1 5 Now tie the other end of the string to the spring on the TUNING pulley Turn the TUNING shaft and check for proper function Then trim the ends of the string 6 Turn the TUNING shaft until the plates of the variable are all the way in Move the pointer to the left end starting point on the dial and fasten it to the string in that position DIAL POINTER ge TUNING SHAFT 17 11 ALIGNMENT PROCEDURE 11 1 ENGLISH Aligning the FM Section 5 10 13 18 SX 838 Control Settings Set the controls knob and switches of the SX 838 as follows POWER ON FUNCTION FM FM MUTING OFF Connections between Test Equipment and the SX 838 The output from an FM signal generator should be connected to the 3002 antenna terminals of the SX 838 A distortion meter should be connected to the TAPE REC terminal jacks on the SX 838 An AC millivolt meter should be con nected to the TAPE REC terminal jacks on the SX 838 in parallel with the distortion meter Set both the FM signal generator and the 5 838 to indicate 98MHz Turn the FM signal generator output level down to minimum Turn the lower core and adjust so that the TUNING
32. 83K 50 COMA 683K 50 COMA 103K 50 COMA 103K 50 RESISTORS R1 Carbon film RD PM 823J Carbon film RD PM 823 Carbon film RD PM 332 Carbon film RD PM 332 Carbon film RD PM 474 Carbon film RD PM 474 Carbon film RD PM 473 Carbon film RD PM 473J Carbon film RD PM 512 Carbon film RD PM 512 Sx 838 12 13 SWITCH CIRCUIT ASSEMBLY AWS 074 0 Sib Sic SPEAKERS A SPEAKERS B SPEAKERS C 4 0 Ri 150 2P w Push switch speakers ASG 068 0 Metal oxide 150 RS2P 151K Metal oxide 150 RS2P 151K 13 13 14 SWITCH CIRCUIT ASSEMBLY AWS 075 0 Foil side Parts List of Switch Circuit Assembly ms meww mw _ Ba Push switch FM muting ASG 058 0 13 15 5P CONNECTOR ASSEMBLY AWX 062 0 Foil Side AWS 062 0 Connector DIN type 5P AKP 007 0 Carbon film 390k RD PS 394 Carbon film 390k RD PS 394J Carbon film 100k RD PS 104 Carbon film 100k RD PS 104 7 4 14 14 1 38 SCHEMATIC DIAGRAMS P C BOARD PATTERNS AND PARTS LIST FOR 220 ONLY MODEL Circuit Connection Diagram and Miscellaneous Parts DIAL SPEAKER IND CATOR 4CH MPX OUT PINTER SP A SP B SP C 2 FUNCTION SWITCH ASS y AWS 073 TUNER Ass y AWE 041 awu F 5 6 5 7 Ami T osHA1201 H 1 T a 3SK45 ex eee buie ede TERI
33. AFT ASSEMBLY KNOB TUNING AXA 056 0 026 PHONO JACK C 6 JACKS 016 0 TUNING PULLEY SWITCH CIRCUIT ASSEMBLY ASSEMBLY ANTENNA TERMINAL AXA 015 A AWS 075 0 BOARD POWER AMPLIFIER AKA 002 0 ASSEMBLY FRONT PANEL AWH 031 0 TUNER ASSEMBLY ASSEMBLY ANB 262 B AWE 041 A a 1000 POWER TRANSFORMER ATT 168 A KU SELAT ATT 172 0 F ASR 007 0 ELECTROLYTIC CAPACITOR 8 000uF 50V ELECTROLYTIC CAPACITOR ACH 015 0 1 0004F 63V SPEAKER OUTPUT TERMINAL 001 AKE 014 0 KNOB POWER TURN OVER AC POWER CORD TAPE MONITOR NR ADG 005 A KCU ADAPTOR ADG 004 0 F AAD 040 0 15 Bottom View SWITCH amp VOLUME CIRCUIT ASSEMBLY AWX 070 0 SWITCH CIRCUIT ASSEMBL Y AWS 065 0 SWITCH CIRCUIT ASSEMBLY AWS 073 0 EQUALIZER AMPLIFIER ANTENNA CLAMPER MICROPHONE ASSEMBLY AEC 154 0 AMPLIFIER AWF 011 0 ASSEMBLY POWER SUPPLY AWM 064 0 CIRCUIT ASSEMBLY AWR 055 0 Ind ge nep AN p lof PROTECTION CIRCUIT ASSEMBLY FUSE HOLDER LEVER SWITCH AWM 025 G AKR 008 0 KCU PO EO AKR 001 0 F ASK 066 0 KCU ASK 067 0 E SWITCH CIRCUIT ASSEMBLY AC SOCKET AWS 066 0 AKP 005 0 AWS 074 0 AKSAN CONTROL AMPLIFIER ASSEMBLY PHONO JACK 1 JACK AWG 029 0 AKB 019 0 BINDING POST FOR GROUND AKE 012 A 16 10 DIAL CORD STRINGING 1 Turn the tuning capacitor so that its plates protrude as much as possible
34. CCDCH 330K 50 C17 Ceramic 15p E CCDCH 150K 50 C18 Ceramic 0 01 50V CKDYF 103Z 50 C19 Ceramic 0 01 50V CKDYF 103Z 50 C20 Ceramic 0 047 25V CKDBC 473Z 25 C21 Ceramic 0 047 25V CKDBC 4737 25 C22 Electrolytic 4 7 25V CEA 4R7P 25 C23 Ceramic 33p 50V CCDSL 330K 50 C24 Electrolytic 10 16V CEA 100P 16 C25 Electrolytic 0 47 50V CEA R47P 50 C26 Electrolytic 10 16V CEA 100P 16 C37 Ceramic 0 047 25V CKDBC 473Z 25 C28 Ceramic 0 047 25V CKDBC 473Z 25 C29 Ceramic 0 047 25V CKDBC 473Z 25 C30 Ceramic 0 047 25V CKDBC 473Z 25 C31 Electrolytic 1 50V CEA 010P 50 C32 Ceramic 150p 50V CCDSL 151K 50 C33 Electrolytic 100 16V CEA 101P 16 C34 Electrolytic 47 16V CEA 470P 16 C35 Mylar 0 047 50V COMA 473K 50 C36 Styrol 510p 50V COSH 511J 50 C37 Electrolytic 0 33 25V CSSA R33M 25 C38 Electrolytic 1 10V CSSA 010M 10 C39 Electrolytic 0 47 25V CSSA R47M 25 CAO Mylar 0 0082 50V COMA 822J 50 C41 Mylar 0 0082 50V COMA 822J 50 C42 Electrolytic 100 16V CEA 101P 16 C43 Electrolytic 2 4 25V CEA 2R2P 25 C44 Electrolytic 25V CEA 2R2P 25 C45 Electrolytic 0 47 50V CEA R47P 50 C46 Electrolytic 0 47 50V CEA R47P 50 C47 Ceramic 0 04 50V CKDYF 403Z 50 C48 Ceramic 8p 50V CCDXL 080F 50 C49 Styrol 300p 50V COSA 301J 50 C50 Mylar 0 01 50V COMA 103K 50 C51 Ceramic 0 04 50V CKDYF 403Z 50 C52 Electrolytic 4 7 25V CEA 4R7P 25 C53 Electrolytic 47 6 CEA 470P 6 C54 Ceramic 220p 50V CCDSL 221K 50 C55 Ceramic 0 01 50V CKDYF 103Z 50 C56 Ceramic 0 01 50V CKDYF 103Z 50 C57 Ceramic 0 005 5
35. D PS 122 Carbon film 1 2k RD PS 122 Carbon film 220k RD PS 224 Carbon film 220k RD PS 224 Carbon film 47 RD PS 470 Carbon film 47k RD PS 473 Carbon film 47k RD PS 473 Carbon film 3 3k RD PS 332 Carbon film 22k RD PS 223 Carbon film 680 RD PS 681 Carbon film 1k RD PS 102 Carbon film 2 2k RD PS 222 Carbon film 100 RD PS 101J Carbon film 47 RD PS 470 Carbon film 24k RD PS 243 Variable resistor semi fixed 4 7k B Variable C92 05 1 0 ACP 04 2 0 resistor semi fixed 330k B Variable ACP 043 0 resistor semi fixed 5Ok B Variable C92 048 0 resistor semi fixed 47k B Variable ACP 00 1 0 resistor semi fixed 2 2k B CAPACITORS TT ACK 006 0 C43 007 A Tuning Capacitor Ceramic Trimmer Ceramic 15p 50V CCDSH 150K 50 Ceramic 100p 50V CCDSL 101K 50 Ceramic 0 01 50V CKDYF 103Z 50 Ceramic 0 01 50V CKDYF 103Z 50 Ceramic 2p 50V CCDSL 020C 50 Ceramic 0 01 50V CKDYF 103Z 50 Ceramic 18p 50V CCDSH 180K 50 Ceramic 0 01 50V CKDYF 103Z 50 Ceramic 18p 50V CCDSH 180K 50 Ceramic 100p 50V CCDSL 101K 50 Ceramic 10p 50V CCDSL 100F 50 Ceramic 0 01 50V CKDYF 103Z 50 Ceramic 0 01 50V CKDYB 103K 50 Ceramic 8p 50V CCDLH 080F 50 Ceramic 15p 50V CCDLH 150K 50 40 Tuner Assembly C16 Ceramic 33p
36. P 26 28 2 E a AM LOCAL E AM TP AUTO ST ROUT LOUT 7 IN IND 2 2 B S MET 77 AM AM N QUT OUT V LVO 3MV 1 8 1355 7 Z EL 86 2SA763P 2SC945 HA1137 HA1138 2SC46 1 HA1156 HA1201 2SC7 1 7 35 45 41312 111098 87654321 5 to 8 8 B c EE 4 Art Ca Es 1234567 9101112 314 15 16 e Foil Side AWE 041 A 14 15 16 17 18 R40 100K R39 10 2 1156 Cai 0 0082 a 1 a AA oo O oo O O Rai 5 6K Cao 00082 her 10 56K Qiz 2 lt A763P 2SC945 18K 33K R43 39K R 3 12K Rs 12K s O 55 220K 13 12 11 56 220K Csa Res 100 644 0 220P C JR4TK RS7 47 Qn R26 24K G AAA o0 2SA763P ik e e m 3 1 9 4 po VILTTI pO oem 6 HAT Te Fs 724 to 9 oo oo oo an co e C49 300P 5 0 04 C57 0 005 84 i o P 6 001 0 152076 ie 33P 47K Ri210K ome 2SC46 Ris 22 5 838 Parts List of Tuner Assembly AWE 041 A RESISTORS AND POTENTIOMETERS Carbon film Carbon film Carbon film Carbon film Carbon film Carbon film Carbon film Carbon film
37. PS 912J RD APS 104 RD PS 104 RD PS 104 5 563J RD PS 114 RD PS 114J RD PS 392 RD PS 392J RD PS 243 RD PS 243 RD PS 102 RD PS 102 RD PS 223 RD PS 223 RS1P 102J RS1P 102J RD PS 392 RD PS 392 RD PS 151J RD7PS 151J 151 RD PS 151 RN1H 4R7K RN1H 4R7K RN1H 4R7K RN1H 4R7K RS1P 100J RS1P 100J RT5B 0R5K RT5B 0R5K RT5B 0R5K RT5B 0R5K RS2P 100J RS2P 100J RD PS 010 RD PS 010J Power Amplifier Assembly CAPACITORS CSSA 010M 25 CSSA 010M 25 Electrolytic 1 25V Electrolytic 1 25V Electrolytic 0 47 25V CSSA R47M 25 Electrolytic 0 47 25V CSSA R47M 25 Ceramic 100p 50V CCDSL 101K 50 Ceramic 100p 50V CCDSL 101K 50 Electrolytic 33 16V CEA 330P 16 Electrolytic 33 16V CEA 330P 16 Ceramic 56p 50V CCDSL 560K 50 Ceramic 56p 50V CCDSL 560K 50 Electrolytic 330 10V CEA 331P 10 Electrolytic 330 10V CEA 331P 10 Electrolytic 100 50V CEA 101P 50 Electrolytic 100 50V CEA 101P 50 Ceramic 12p 500V CCDSL 120K 500 Ceramic 12p 500V CCDSL 120K 500 Ceramic 82p 500V CCDSL 820K 500 Ceramic 82p 500V CCDSL 820K 500 Ceramic 82p 500V CCDSL 820K 500 Ceramic 82p 500V CCDSL 820K 500 COMA 563M 50 COMA 563M 50 Mylar Mylar 0 056 50V OTHERS mml meww mw L 1 AF choke coil T63 009 0 L2 AF choke coil T63 009 0 Socket power transistor AKH 001 0 Spacer ins
38. TCH This switch selects the frequency above which the treble tone control will begin to act This turnover frequency can be set at 2 5kHz or 5kHz to match the characteristics of the room the program material or your personal listening preferences The effect of the tone controls and turnover switches is illustrated in the below TREBLE CONTROL Clockwise rotation gives stronger emphasis of the high range above the turnover frequency selected by the TREBLE TURNOVER switch Counterclockwise rota tion reduces high range response This control knob has click stops RESPONSE IN dB FREQUENCY IN Hz MODE BUTTON Leave this button undepressed if necessary depress this to release it when already depressed for STEREO playback For MONO playback depress it In this case stereo signals for left and right channels will be mixed into mono signal which will be heard from the center of both speaker systems TUNING KNOB REC SELECTOR SWITCH Each setting this switch to FM PHONO and DUPLICATE permits recording on tape of the tape deck connected to the TAPE 1 terminals of the SX 838 Recording from speaker systems can be made in the ordinary manner only when this switch is set to SOURCE FM FM broadcasts can be recorded PHONO Disc records on the turntable can be recorded SOURCE For all other modes of operation such as record playing radio reception etc DUPLICATE Recorded tape can be duplicated or edit
39. control amplifier has an extremely high input impedance using an field effect transistor This greatly reduces the in fluence of the performance imherent in equipment connected externally The output from this FET circuit is into the tone control circuit and employed with turn over switches The control amplifier output is fed to the power amplifier after passing through the LOW FILTER HIGH FILTER and AU DIO MUTING circuits The power amplifier is a differential amplifier of the first stage and pure complementary circuit design with bal anced positive and negative power supply The power amplifier output is fed to the three push buttons which form the SPEAKER switch This selects A B and C speaker system terminal connection If all three speaker systems were to be connected simultaneously the effective speaker impedance might be less than 44 To guard against this possibility when all three buttons are depressed together all three systems are disconnected from the amplifier The protective circuit which guard against DC potentials at the power amplifier output junctions against speaker complex load impedances less than 452 and shorts across the speaker terminals Their operation is such that under the corres ponding abnormal condition a relay acts to separate the output junction and the output circuit Further these protective circuits are also help to mute the unwanted signal which immediately follows switching th
40. e POWER switch ON and to immediate ly disconnect the output after switched OFF 11 6 PACKING METHOD AND PART NUMBERS SIDE PAD R AHA 067 A OPERATING INSTRUCTIONS ARB 101 0 ENGLISH ARD 067 0 FRENCH GERMAN SX 838 SIDE PAD L AHA 066 A PACKING CASE AHD 213 A SX 838 7 LEVEL DIAGRAM LOW amp AUX HIGH FILTER PHONO ai SPEAKERS EQUALIZER CONTROL POWER AMP AMP uiu LO HEADPHONES 2 Aa Mic DS an 30 APRANN 7 SPEAKERS pb TT 2 80 55W o 26598 245dB HEADPHONES 1 25V 0dBV 1V o IN dBV 17598 LEVEL O 35548 37 508 ee e gt O i We 2mV AT A 60 FREQUENCY kHz 13 8 DISASSEMBLY 15 4 14 To remove the wooden cabinet first remove the two screws holding each side then lift the back of the wooden cabinet upward Pull off all knobs Remove the two screws in the upper edge of the front panel and remove two nuts and washers Then pull the panel gently forward To remove the bottom panel first remove the ten screws holding it in place FRONT PANEL 9 PARTS AND P C BOARD LOCATIONS Top View FERRITE LOOPSTICK ANTENNA 026 0 KNOB VOLUME BALANCE REC FERRITE ANTENNA HOLDER ASSEMBLY SELECTOR TREBLE BASS AXB 001 A AAB 068 A TUNING SH
41. ed with two tape decks AUDIO MUTING BUTTON 20dB Depress this button to mute the audio input to 20dB No need to turn down the VOLUME control on each occasion for your convenience M MUTING BUTTON Leave this button undepressed in the ON position while tuning in FM stations Inter station noise may interfere with FM reception while tuning between stations To suppress this noise leave the MUTING button undepress ed in the ON position If the low signal strength is due to distance from the transmitter or other influences depress this button at which the weak station will be heard with the MUTING OFF LOUDNESS BUTTON Depress this button to listen at low volume The human ear s frequency response varies according to the listening volume The depressed button compensates for hearing response with emphasis on the bass and treble FUNCTION SELECTOR BUTTONS For selecting the program source push each button as follows M is dX For AM broadcast reception For broadcast reception STEREO indicator lights up when the broadcast is jn stereo PHONO 1 For operating a turntable connected to the PHONO 1 input jacks PHONO 2 For operating a turntable connected to the PHONO 2 input jacks NIB S For using a microphone Not possible to mix with other program source listening to audio equipment tridge tape player TV sound tuner etc connected to the
42. eramic 0 01 ACG 004 0 Ceramic 0 01 ACG 004 0 Ceramic 0 01 150V ACG 004 0 Electrolytic 470 80V ACH 038 0 Electrolytic 470 80V ACH 038 0 Electrolytic 100 50V CEA 101P 50 Electrolytic 100 50V CEA 101P 50 Electrolytic 220 16V CEA 221P 16 Electrolytic 2 200 10V CEA 222P 10 Electrolytic 220 50V CEA 221P 50 Electrolytic 470 16V CEA 471P 16 Ceramic 100p 50V CCDSL 101K 50 81
43. lot lamp 8V 0 3A meter AEL 015 0 P C board cover ANG 100 0 Lamp board assembly AWX 069 0 Lamp box ANH 210 A Rubber bracket AEB 031 A Pilot lamp 6V 30mA Stereo indicator AEL 014 0 Front panel assembly ANB 262 B Knob Power Turn over Tape monitor NR adaptor AAD 040 0 Knob Bass AAB 068 A Knob Treble Volume Balance Rec selector AAB 068 A Knob Tuning AAA 026 0 Ornamental ring AAC 034 0 Knob FM muting AAD 082 A Coupler Knob to switch AAE 007 0 Spacer AEC 152 A Knob SPKR A B C AAD 064 A Knob Low cut High cut 20dB AAD 065 A Knob Function AAD 066 A Knob Mode Loudness AAD 067 A Lever switch Power ASK 066 0 KCU Lever switch Power ASK 067 0 F Lever switch Power ASK 068 0 GN Phone jack Headphone K72 026 0 Shading plate AED 018 0 Nut insulator B71 031 0 Sub chassis AND 074 B Shield cover ANF 234 0 Control amplifier assembly AWG 029 0 Switch amp volume circuit assembly AW X 070 0 Microphone amplifier assembly AWM 064 0 Shading metal ANF 249 0 Pulley shaft M49 025 E Pulley AEC 153 0 Rubber bracket AEB 057 A Pilot lamp 8V 50mA AEL 022 0 program indicator Er Mec op GT 30 Lamp holder Sub panel Pulley held metal Pulley Pulley shaft Rubber bracket Pilot lamp 8V 50mA program indicator Lamp holder Pulley Pulley shaft Shading metal Switch circuit assembly FM muting Tuning shaft assembly Switch circuit assembly speakers Switch circuit assembly filter AF muting
44. m 50 to 75 If your unit IN jacks should always be left in is equipped with such a switch position in normal use If they on the rear panel and if the high are disconnected or removed no sound range gives an impression sound will come from the speak of weakness move the de em ers phasis switch to its other posi Always be sure to cut the power tion supply before attempting to re move them SGX 838 TAPE DECK open reel cassette TAPE DECK Qe CARTRIDGE TAPE PLAYER arx En LINE LINE LINE OUTPUT INPUT OUTPUT LINE INPUT Recording Playback Cord DIN type SPEAKERS SWITCHED UNSWITCHED 1OOW TOTAL 200W R CH L CH B SPEAKER SYSTEMS 4 BLOCK DIAGRAM 4 CH MPX QUT qoo NM RF amplifier Mixer IF amplifier Detector e 8a ee HHH 96 ko TONNG a Cs Ses 6ND r SIGNAL AM ex METER FERRITE Separation Low pass filter Sic ANTENNA Local oscilator control ge AF amplifier Stabilizer ie eo to AF section 1 Pilot Lamps 36 to Tuner section 9 0 FUSE dado AC LINE 21 Power transfomer lt to power amplifier oc mee j i azez 77771 m AE Sioa Y E 1 5 7 g E e IE 8
45. meter needle is centered Increase the FM signal generator output to 60dB modulated at 400Hz with a deviation of 75kHz Turn the upper core and adjust so that the distortion is at a minimum Steps 4 above should be repeated several times in succession until no further significant im provement is obtained Set the FM signal generator output level to 10dB modulated at 400Hz with a frequency deviation of 75kHz Adjust for maximum output at 9OMHz Adjust for maximum output at 106MHz Adjust for maximum output at 90MHz TUNER ASSEMBLY AWE 041 Adjust for maximum output at 106MHz Steps 11 12 above should be repeated several times in succession until no further significant improvement is ob tained TUNER ASSEMBLY AWE 041 Aligning the FM MPX Section NOTES This set of adjustments should not be carried out until the alignment of the FM section 1712 above has been completed The multiplex signal generator should be connected to the external modulator terminals of the FM signal generator SX 838 Control Settings Set the controls knob and switches of the SX 838 as follows POWER ON FUNCTION FM FM MUTING OFF Connections between the Test Equipment and the SX 838 The output from the FM signal generator should be connected to the 30022 antenna terminals of the SX 838 The output from the MP X signal generator should be connected to the external modulator terminals of the FM signal generator
46. ng system uses a phase locked loop PLL circuit which assures continuous stable operation and excellent stereo separation with low susceptibility to external noise such as car ignition noise and ambient temperature changes After decoding the signal is fed to four transistors and one LC filter where the residual carrier component 38kHz 19kHz and SCA is rejected and then to the audio amplifier section The FM muting circuit is an electronic switch incorporated into the IC so that the demodulated circuit is switched off and on in the IC The AM tuner section employs one monolithic IC which functions as radio frequency amplifier frequency converter local oscillator intermediate frequency amplifier and detector The output is a pure audio signal The signals which are applied to the PHONO 1 and 2 terminal jacks are selected by the FUNCTION switch before being fed to the first stage of the three stage direct coupled equalizer amplifier by which the signals are amplified The output from the equalizer amplifier together with that from the AUX terminal jacks the audio signal from the AM tuner the audio signal from the FM tuner and the amplified signal from MIC terminal jack are all selected by the FUNCTION switch and pass through the switch circuits 10 R Sx 838 for REC SELECTOR TAPE MONITOR DOLBY NR ADAPTOR and the circuits for BALANCE and VOLUME controls before being fed to the control amplifier The
47. stor 2SB528 C or D Transistor 2SD358 C or D Transistor 2SD358 C or D Transistor 2SC1079 R or Y 2SC1116 R O or Y 2SD287 L or M Transistor 2SC1079 R or Y 28C1116 R O or Y 2SD287 L or M Transistor 2SA679 R or Y 2SA747 R O or Y 2SB539 L or M Transistor 2SA679 R or Y 2SA747 R O or Y 2SB539 L or M Diode 152473 Varistor STV 4H Varistor STV 4H Diode 1S2473 Diode 1S2473 RESISTORS AND POTENTIOMETERS Description Variable resistor Variable resistor Variable resistor Variable resistor Carbon film Carbon film Carbon film Carbon film Carbon film Carbon film ACP 029 A ACP 029 A ACP 019 B ACP 019 B RD PS 153 RD PS 184 RD PS 184 RD PS 102 RD PS 682 RD PS 394 SX 838 Continued on the Next Page 55 56 Carbon film Carbon film Carbon film Carbon film Carbon film Carbon film Carbon film Carbon film Carbon film Carbon film Carbon film Carbon film Carbon film Carbon film Carbon film Carbon film Carbon film Carbon film Carbon film Carbon film Metal oxide Metal oxide Carbon film Carbon film Carbon film Carbon film Carbon film Carbon film Metal film Metal film Metal film Metal film Metal oxide Metal oxide Wire wound Wire wound Wire wound Wire wound Metal oxide Metal oxide Carbon film Carbon film RD PS 394 RD PS 104 RD PS 912 RD APS 222 RD PS 222 RD
48. tained 6 Connect the AM signal generator directly to the AM ANT antenna terminals GRA SERI wares ERATE i BOWE a o a o 9 TUNER ASSEMBLY AWE 041 7 With a frequency of 1 400kHz and an AM signal generator output of 36dB adjust for a low frequency output of 70mV 8 With an AM signal generator output of 80dB adjust for a low frequency output of 310mV 20 Aligning the Power Amplifier Sec tion Nothing should be connected to the input jacks of the SX 838 and an 802 dummy resistor should be connected across the speaker terminals A DC millivolt meter should be connected across between terminal number 5 and earth 20 and earth for right channel Adjustment should be made to bring the voltage to zero The DC voltmeter should be connected between terminals number 3 and 4 22 and 23 for right channel Adjustment should be made to bring the voltage to 30mV Sx 838 2 POWER AMPLIFIER ASSEMBLY AWH 031 21 12 EXPLODED VIEW AND PARTS LIST NOTE Parts number is subject to change for the purpose of improvement with notice of a service bulletin Service bulletin will be furnished whenever necessary and you are requested to amend parts number in this manual according to the instructions NOTICE Any parts asterisked are subject to being not supplied Parts List of Exploded View 1
49. ulator AEC 076 0 Heat sink ANH 117 0 Fuse holder AKR 013 0 91 Power Amplifier Assembly 13 7 PROTECTION CIRCUIT ASSEMBLY AWM 025 C 25 857 Ri 27K 61 2SC869 16 472 162473 254733 Q 2SC945 ZON 1384 A ii POWER AMP 7 UNIT Le ey 20V oo 28945 _ Ra ISK 150K 5 R 68K p e 3 Q WV 9 j x 1 RELAY a W Ry 27K Q3 2 3 330 6 N I 1 y l 27K p F a e 70 Re Gy 330 6 ue S e Js d i Me lt gt Power UNIT KI da E RC 1 a lt a x p x A i a Res 2 2K Ra27K 2SC869 25 857 x 522 152473 bs eam 1 I I 4 3 2 13V RCH IN IN Foil Side AWM 025 C 2SC945 2SC869 25 857 25 733 25 1515 25 1384 si st Parts List of Protection Circuit Assembly AWM 025 C SEMICONDUCTORS Transistor 2SC869 C B or D 25 857 25 1515 Transistor 2SC869 C B or D 2SC857K A 2SC1515K Transistor 2SC945 O or R Transistor 25 945 or R Transistor 2SA733 Q Transistor 25 945 or R Transistor 2SC1384 R or Diode 1S2472 Diode 1S2472 Diode 1S2472 Diode 1S2472 Diode 1S2472 Diode 1S2473 Diode 1S2473 Diode 1S2473 RESISTORS Carbon film
50. z 9 5 dB Tone Control BAM GASSER 6dB 100Hz 1098 100Hz TURNOVER FREQUENCY 200Hz 400Hz C adipis 7dB 10kHz 11dB 10kHz TURNOVER FREQUENCY 5kHz 2 5kHz Filter UT esses 8dB 50Hz 6dB oct HIGH GUT iip tes 9dB 10kHz 6dB oct Loudness Contour Volume control set at 40dB BOB BOR vibe 8dB 100Hz 4dB 10kHz Hum amp Noise IHF short circuited A Network More than 70dB MI uei vs rk Uo CORN VEN ders More than 65dB AUX TAPE PB a More than 95dB 6 20dB 3 FM SECTION Usable Sensitivity Capture Ratio Selectivity IHF Signal to Noise Ratio Image Rejection EMHZ 2 22 0 IF Rejection 98MHz Spurious Rejection AM Suppression Harmonic Distortion STEREO 422207445220 Frequency Response Stereo Separation 1kHz BOHz 10kHz Ll Sub Carrier Suppression Antenna Input M uting sus Sas OO AM SECTION Sensitivity IHF Ferrite antenna Ext antenna Selectivity Signal to Noise Ratio Image Rejection IF Rejection MISCELLANEOUS Power Requirements Power Consumption Dimensions ons Weight Without Package With Package SN FURNISHED PARTS FM T type Antenna

Pioneer SX-838 User's Manual

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