PIONEER' o)/>f SOLID STATE FM-AM STEREO RECEIVER sx-44(f -w CAUTION Before connecting the line cord to the wall socket, carefully read and follow the instructions described below, to assure the safety of your unit. o Model SX-440 is set for240V operation when shipped. lf this unit is used in a different line-voltage area, read and follow "LINE VOLTAGE SELECTION AND FUSE" on back cover.
PIONEE.R FEATURES OF SX-44O OSENSITIVE FM CIRCUIT A high performance transistor is used in RF amplifier for excellent sensitivity. No distortion or cross modulation will be caused by high input power. OBUILT.IN MULTIPLEX CIRCUIT Provides full-frequency response and a good separation between channels for excellent stereo effect. OAUTOMATIC FM MULTIPLEX SIGNAL INDICATOR A lamp lights automatically when receiver is tuned to an FM station transmitting stereo multiplex O signals. EASY-TO.
PIONEE.R R MODEL SX.44O FMSTEREo MONO l^ FM 88 s s? 91 90 98 100 l0? t04 106 108 55 60 70 80 S0 100 l?0 140 160 x loKHz TAPE MON LOUDNESS SPEAKER AFF !Hlrr.c MHz VOLUME L __0_.R B I g 6 11 12 t3 Fig.4 15 1617 2B 21 22 23 1g 1B 24 25 26 27 28 29 30 3t 32 33 Fig.
KNOBS AND SWITCHES ON FRONT PANEL 1. POWER SWITCH Power is turned on when the s^ritch is rotated clockwise; turned off when rotated counterclockwise. Operation of this switch also turns on and off the power supplied to the AC OUTLET (3O) When the s^,itch is set to the "A" position, the loudspeakers connected to the SPEAKER SYSTEM A TERMINALS on the rear panel of the SX-440 emit sound; when set to "8". those connected to the SPEAKER SYSTEM B TERMINALS. 2. TUNING INDICATOR 9. BASS CONTROL of the SX440.
TERMINALS AND CONNECTION ON REAR PANEL 15. FM ANTENNA TERMINALS An FM broadcast receiving antenna will be connected terminals, 16. GROUND TERMINAL to these 1 Connect a ground conductor to this terminal for grounding the SX- zl40 17. AM ANTENNA TERMINAL This terminal is provided for connecting an external AM broadcast receiving antenna. most suitable FM antenna, AM antenna and grounding, refer to the article "ANTENNA CONNECTION AND GROUNDING". NOTE: For the 18.
PIONEI.R CONNECTION OF LOUDSPEAKER SYSTEMS Fig. 8 . When connecting loudspeakers, extract speaker connector plug from the accessory bag and connect the speaker wire l€ads to the plugs and illustrated below. Be sure to connect the positive of the leads to the positive terminal of the plug. . When the loudspeakers are connected to the plugs. insert the right channel speaker plug into the speaker system A terminal socket (26) and the left channel speaker plug into the speaker system A terminal socket (27).
CII NOTE: For the outdoor antenna, a standard AM broadcast antenna can be formed by purchasing pVC wire from an electric appliance shop and installing it 25 feet (7.5 m) above the ground for a horizonial length of 50 feet (15 m), with a feeder line 30 feet (1O m) long. These wire lengths may not be so price and may be as long as allowed by the place of installation.
IPIONEER RECEPTION OF BROADCAST r BEFORE TURNING ON THE POWER SWITCH OF THE SX.44O, CHECK THE FOLLOWING: VOLUME CONTROL KNOB (14) is set to "MtN". TAPE MONITOR SWITCH (12) issetto "OFF". MODE SWITCH (11) set to "STEREO". SPEAKER ON/OFF SWITCH (7) is set to "ON". (lf using a stereo headphone, set the s^/itch to "OFF"). r RECEPTION OF FM BROADCAST: 1, SEt thE SELECTOR KNOb (5) tO thE "FM STEREO" position. 2.
OI PLAY OF DISK RECORD Set the SELECTOR knob (5) to the "PHONO" position. lf the record player used a crystal or ceramic cartridge, set the knob to the "AUX" position. 2. When using a monaural record player, set the MODE SWITCH (11) to the "MONO" position. 3. Adjust the voLUME, BASS and TREBLE CONTROLS for desired sound volume and tone quality. 1. PLAY OF CARTRIDGE TAPE 1, Set the SELECTOR knob (b) to the ,,AUX', position.
PTONEER ALIGN M ENT INSTRUCTION instruction with extreme care before attempting alignment. Test Equipment. 1)Standard Signal Generator. 2) VTVM, DC, AC 3) Oscilloscope. " Attention on Alignment, 1) Signal Generator lnput: Always use the minimum generator input that provides a satisfactory output indication. 2) When connecting the test equipment to the input, use a shielded wire that is as short as possible.
CDI ALIGNMENT OF FM SECTION SELECTOR Position of Switch: FM MONO Volume Control Setting: Fully counterclockwise Disconnect TP zoL from TP zoz I npul 0 utput Dial STEP Eq ur C on n pment F ections req uency S Level Eq ui etting C of no nterference on A nectlons Adjusl Point Sweep generator to FlVl antenna term ina r 10.
PIONE.[.R MODEL SX-44O TECHNIGAL SPECIFICATIONS . o FM SECTION Circuitry TRANSISTORS AND DIODES Tuner Section F,E.T. Transistors D iodes Audio Section Transistors Diodes and etc. 1 1 Frequency Range 1 IHF UsableSensitivity 17 lmage Reiection Signal-to-noise Ratio 20 6 Antenna lnPut AUDIO SECTION Circuitry Music Power Output Single ended push-pull RMS Rated Power Output 4fl MULTIPLEX SECTION Circuitry Time-snritching type demodu- Channel Separation automatic selection 35 dB (at 1 kHz.
OI CON DITIONS ENTLY FREQU M ISTAKEN TO TROU BLES Noise: There are a variety of noises relating to the operation of a hi-fi unit. These are generally divided into two types; (1) the unit is faulty (a transistor or part is deteriorated) and (21 an external source of noise gives noise to the unit.
trr PARTS LIST OF THE SX-44O 0APACIT0RS tN P: pF lo% TOLERANCE UNLESS OTHERWISE NOTED ppF Description Symbol Cr Part Toggi Switch S6 No DCI 43.O0 .4K\ 3 -C Line Voltage Selector Se Cz Eiectrolytic C: Ceramic Cs 35V 10v l 000 100 1 80P Ca s42.O22.A Sr 0.01 Cerami c 5 s11,O18-O 2.046.A M I S CE 50v LLAI{E (lUS Ce Cr N4yl ar 0.0 2 + Part Description Symbol zOaZ No Cg Electrolytic Cs 1 000 5 16V 1 -021 .
TUr{tR Ut'lrT( w35-007) ztz Czt3 C lvy la r Cztt CAPACIT{)RS C275 C 276 + C 277 C 2or 1op I0.5p C zoz 0.001 + rooaz C zos 0.01 C 278 RESI ST()RS Czoc C2o5 15p C zoo 0.01 1op C zoz C zoe 1 t O.5p + rooali -o t 0.5p R 201 00p f: 0.5p C zog 1p Czro 0.01 carbon Film 1 00K R zoz R 203 +100 1tM R 205 470 220 C2r2 2.2p R 206 22K Czr: 0.04 R zoz Czr+ o.01 R 208 2.7K Czrs 39Op R2o9 10K Rzro i00 R 0 Czrr t 0.5p Czro 5p C2!7 2p C 218 o.
Is R zoe Carbon Film AUD|0 UiltT (rvl5.073) 33K 68K Rzo; CAPACITORS R 268 Rzos R Symbol 6.
RESI STt)RS Symbol I R 30',I R302 R303 R304 R305 R306 R307 R308 R309 R31 0 R31 1 IRAI{SISTORS Description Part No. Carbon film 1,r '100K R31 50K '1 2SC8l1 BL Transistor Part No o302 o303 o304 2SC870 BL Transistor o307 o30B 0309 25C734 R,,Transistor 03'10 59K 031',I 25C734,P, Transisto r 4312 3 I Descri ptio n o30'r o306 390 1K 4 5 6 7 8 Symbol o305 R312 R31 R31 R31 R31 R31 R31 114 031 3 Q314 25,4561 P Transistor 2.2K 330K 15K R320 R321 5.6K R322 4.
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IfPIONEE.R PARTS LAYOUT (Top View) LI MW FERRITE ANTENNA ANTENNA gzbs=gzo+= irn,l-ol t=--.l l-l tr] Ft ?* W f E"o'39:@, I t:l J_ rzos I o-l t-"-l L2o7 2scB38 T2l0 zrrgQ6zsa o,zscato TUNER ':o: f 2a5cf 2o2 Cf zo4 CI 2ol _:^u o ururr(w:s-ooz ) OQ212 POWER SUPPLY UNIT (wr602t) 2SD226 or130 tA" o ',',f;'tgt 2SD226or13O ;;,"rz r.
