SERVICE MANUAL
Contents
1. C703 C702 0621 0 1 0 1 UBZ3 9B EX Z AN MA4062 M 9701 MA4062 M 0601 0621 622 2502137 0P T 2 AZ G LED DRIVE Duef 4 O Jj 2 2 1 l CONTROL R702 100 D u suite L Pas j MAIN BOARD vi 9 opp sw BOARD SE S EE E e SES Page R706 100 S ree PT jw TE Page 18 lt gt SE k GE 20 H BIN lt m m m 2 NC lt 15 L S 2 Be GND 1 a a Of DTA114EKA gt gt gt Lit KEY ACTIVE SWITCH o 100k CHASSIS De AAA R592 L51 47 ex d 0591 592 EEP veo KEN BATTERY 0 A SS CHECK 25C2412k gR ee EE a a Pi o 2 E o o lt 6 9 e A 2 2 A E REGULATOR IC B D RESET SIGNAL GENERATOR 8591 MA8075 M nm hE S ACIN 100 TOk 10k MA111 El 1 OHHH AHAHHH E PW_ON hh V m _L low A re m TUSV 1 d REMOTE INJ uy Al SR GES RS j ee eee ee ee 9571 SSES A CEE ACCESSORY DTCTI4EKA o AJ ACCESSORY R572 maBogs a CHECK O 0614 AN o Sie ed DA E R574 WK 15R139 25 22k C571 ES 22k IDAS i GE E 47k lt 22 nih lt 23 lt 24 lt 25 7N 19 19 XR 4950X 6 5 PRINTED WIRING BOARD SUB Board SUB BOARS J component 519E K1 S2 K2 LENCOL Page 17 KEY BOARD CN901 Page 22 A1 S1 A2 WU O o O O o EE O O O Q A O OIOIO OI IOO B CNP801 1 676 6052. am y q gt lt 9 o 5 lt E S S S mu o co P cP LU 5 kE 21 21 6 8 SCHEMATIC DIAGRAM KEY Board SUB BOARD CNP801 Page 20 2 See page 15 for Waveform XR 4950X KEY BOARD RE901 ROTARY ENCODER VOLUME CONTROL H m I LCO DATA LCO CE LCD CLK DO DOOR SW SEEK ZAMS R910 LSW906 172 MODE 6 8k gt lp R981 O W 0 5904 i PRST a gt O 5902 PRST R903 680 LED910 913 LWA673 R15 1 LCD BACK LIGHT R915 lk R917 1 5k LSW912 172 gt LSW913 1 2 5 LSW914 1 2 4 LSW915 1 2 3 LSW916 2 S K LSW917 1 2 EP de LSW917 2 2 551 LSW913 2 2 S42 S41 540 w LED901 904 CL 190SR C8 T ILLUMINATION ne Omg 2 7662 220 LIQUI CRYSTAL DISPLAY DRIVER R957 330k C95 C952 C954 C955 100p 0 022 T 0 1 0 1 59 vss C954 D952 UDZ TE 17 5 1B 1 4 R954 1k MEP IC901 8 LC75824E LCD901 LIQUI CRYSTAL DISPLAY 521 S20 S14 13 23 23 XR 4950X 6 9 IC PIN FUNCTION DESCRIPTION e MAIN BOARD IC501 MN101C49KTA2 SYSTEM CONTROLLER Pin No LA N Nn Oo Ch 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 VREF Reference voltage 0V input terminal for A D converter FM a
3. Design and specifications are subject to change without notice FM AM CASSETTE GAR STEREO 9 873 510 11 Sony Corporation 2001D0500 1 e Vehicle Company 2001 4 Shinagawa Tec Service Manual Production Group XR 4950X 6 3 SCHEMATIC DIAGRAM MAIN Board 1 2 See page 15 for Waveforms See page 21 for IC Block Diagrams Jl FM AM ANTENNA D MAIN BOARD 1 2 TUI TUX 020 FM AM TUNER UNIT CASE GND CHASSIS HP901 PLAYBACK J MECHANISM BLOCK M901 K ean REEL CN351 13P 1 gt gt gt z gt gt gt lt s gt 4 gt A S 6 gt E 7 gt gt Ei H Hey r 8 gt E S 9 gt masmi a D Oo C22 e 0 l l E CO A a sl Sr e E E N u ae lt T LL ME O O o e a IL C41 100p 18k T0 S S 470 N gt co ejeje RC INI lt 0 gt FWD lt 4 8 gt REW bee a LSO mn Ss W Soo OA 11 gt Hie EECH Ba PS ne een Zem E lt o gt OZ Ewo ne ao ag ol E lt n SC dll RSR 330p 22 CT T 15 gt E an TAPE EQUALTZER AMP AMS nee CDR se E As e REES ol 10501 Ll U get p SYSTEM CONTROLLER E i MNIDICASKTA2 19 gt RC INO KO E2P_SIO IC B D E2P_CKO 1C351 302 Ser 0354 LOADING TAPE d i 25D1802FAST CAPSTAN REEL OPERATION MOTOR 0
4. 20 20 6 6 SCHEMATIC DIAGRAM SUB Board 2 3 4 SUB BOARD CNP801 14P LSW801 172 gt G LEDen CL 190PG CB T TAPE WINDOW LSW801 2 2 JRE Sl RE 0 CN701 J Page 19 KEY 0 KEO O 0 i CO CO B B XR 4950X e IC Block Diagrams MAIN Board IC331 TDA7402TR IC301 CXA2509AQ T4 10351 LB1930M TLM S 2 N 26 25 24 23 a CONTROL UIRGHI CIRCUIT ACINLF 64 SWINR 35 ACIN SUBWOOFER EE SELECTOR CONTROL ACOUTR 87 ACOUTL 88 MAIN SECOND CREF 89 vec 15 NC l a VDD z S VOICE SEN o BANDPASS 14 MSOUT ed spa E 13 DGND E 12 MSTC ore 11 G1FB m 8 SM lt m CH T e i D OOOO SOFTMUTE 2 S ESE E ER EB QUAL S E zz E E i COMPANDER a j w LOUDNESS LOUDNESS EC F E MULTIPATH 16 MPOUT DETECTOR e IN GAIN STEREO ADJUST 45 MPIN STEREO BLAND BEEP a IN GAIN MUTE CONVERTER 14 LEVEL PILOT MAIN SOURCE MIXING SECOND SOURCE SELECTOR SELECTOR SELECTOR 80kHz 43 MPX INPUT t MULTIPLEXER AM FM NOISE BLANKER 12 AMIF PIL DET Y S 0m gt a o F gt gt gt a not o 9 Z A co
5. 8 REGULATOR MOTOR DRIVE DRIVER lt 8 7 gt TA wa ad Doref 0354 21 gt REGULATOR ESA CONTROL SWITCH E R354 M 0353 BTC114EKA gigle S INVERTER elele 22 gt zll a an GEET K gt LIL __ l A ae 552 NOSE DETECT 18 18 MAIN BOARD 2 2 Page 19 XR 4950X 6 4 SCHEMATIC DIAGRAM MAIN Board 2 2 See page 21 for IC Block Diagrams 19 20 21 22 23 24 25 26 21 28 29 30 31 32 33 34 35 36 37 J331 2P SS PE ee AUDIO OUT EE EE MAIN BOARD 2 2 1C751 a O O Y ier POWER ANE 1 4 Y 10751 183 c285 TAB268HS CHASSIS p p 4 3 O NC i TI B cat ts T ee Fut FRONT L D t L nis Em pu E V A FRONT L FRONT LCH 100 4 7 100 0 0171 D ig IC B D DTC314TK RI72 C174 REAR L FRONT LCH MUT I NG 22k 0 2 REAR LCH C172 REAR R REAR LCH 0181 100p DAT REAR R REAR RCH S ee C lt 2 x ee FRONT RCH lt 4 AC C106 R282 ATT lt gt SE2R DTC314TK INPUT SELECT MUT ING lt 7 6206 F IL ELECTRICAL VOLUME 10331 ANT REM li wt fin Gyo 5 lt 8 E R273 C271 R271 JC271 MUTING kel ACC lt 9 100 4 7 100 0 0 BATT lt 10 M 1H ANV ANY gt GND JC194 JC195 0 0 0588 Se 155119 E 755 RIO tigi TEST 10 47k 1000 16V P mit R594 C783 lk 0 1 O C781 on 0785 C782 C784 300 aper del O1 Dal CHASS 15 4 F L781 A 2504H
6. ED drive signal output of the tape window and 2 indicator LED801 LSW801 H LED on H is output to turn on LED when front panel is opened REINI Dial pulse input of the rotary encoder RE901 for volume control REINO AD ON A D converter power control signal output When the KEYACK pin 9 that controls reference voltage power for key A D conversion input is active L is output from this terminal to enable the input Power on off control signal output of the illumination LED and liquid crystal display driver ILLON cE IC901 H power on XR 4950X 84 REL 1 Rotation detection signal input from supply reel sensor and take up reel sensor on the deck mechanism 2 Tape position EJECT FF REW L EJECT mode H others mode 86 REV FWD mode detection signal L FF and FWD mode H others mode 87 input from the tape operation switch L REW mode H others mode on the deck mechanism L REV and EJECT mode H others mode 88 89 LMLOD Motor drive signal output to the loading tape operation motor driver IC351 H active For the loading direction and forward side operation 1 Motor drive signal output to the loading tape operation motor driver IC351 H active 90 LMEJ i For the eject direction and reverse side operation 1 91 TAPON O Tape system power supply on off control signal output H tape on 92 x CMON O Capstan reel moto
7. F REW mode e direction control signal output to the CXA2509AQ IC301 mmm SE e E Se L forward direction H reverse direction METAL control in out terminal MTLON At initial mode auto manual mode selection input of METAL function manual at L input At manual mode METAL on off control signal output terminal METAL on at H output At auto mode input at MTLIN pin 62 TAPATT Tape muting on off control signal output to the CXA2509AQ IC301 H muting on Active at ATA FF REW mode Dolby control in out terminal DOLON At initial mode valid invalid selection input of dolby function valid at L input At normal mode dolby on off control signal output terminal dolby on at H output Not used this function fixed at H Ces a music is present or not from CXA2509AQ IC301 is detected at auto music sensor L music is present H music is not present 4VPRE H 4VPREOUT model setting terminal L 4VPREOUT model Fixed at H in this set ms 59 to 73 L L Not used open 74 75 76 77 78 79 80 81 82 83 24 E2P SIO Two way data bus with the FM AM tuner unit TU1 E2P CKO K Clock signal output to the FM AM tuner unit TU1 P O Notused open SWSHIFT MEN AM filter control signal output to the FM AM tuner unit TU1 L SW mode DOORS W Front panel open close detection signal input L is input when the front panel is closed DOORIND L
8. SERVICE MANUAL Ver 1 0 2001 04 AR 4950X AEP Model Model Name Using Similar Mechanism Cassette player section 4 track 2 channel stereo Wow and flutter 0 08 WRMS Frequency response 30 18 000 Hz Signal to noise ratio 58 dB Tape track Tuner section FM Tuning range 87 5 108 0 MHz Aerial terminal External aerial connector Intermediate frequency 10 7 MHz 450kHz Usable sensitivity 8 dBf Selectivity 75 dB at 400 kHz Signal to noise ratio 66 GB stereo 72 dB mono Harmonic distortion at 1 kHz 0 6 stereo 0 3 mono 35 dB at 1 kHz 30 15 000 Hz Separation Frequency response AM Tuning range 531 1 602 kHz Aerial terminal External aerial connector Intermediate frequency 10 7 MHz 450 kHz Sensitivity 30 uV Power amplifier section Outputs Speaker outputs sure seal connectors Speaker impedance 4 8 ohms Maximum power output 50 W x 4 at 4 ohms Tape Transport Mechanism Type MG 25F 136 SPECIFICATIONS General Outputs Tone controls Power requirements Dimensions Mounting dimensions Mass Supplied accessories Audio output Power aerial relay control lead Power amplifier control lead Telephone ATT control lead Bass 9 dB at 100 Hz Treble 9 dB at 10 kHz 12 V DC car battery negative earth Approx 178 x 50 x 183 mm w h d Approx 182 x 53 x 162 mm w h d Approx 1 2 kg Parts for installation and connections 1 set Front panel case 1
9. ay driver IC901 H active LCDCKO O Serial data transfer clock signal output to the liquid crystal display driver CH Rotary remote commander shift key input terminal L shift Internal RAM reset detection signal input terminal RAMBU I Input terminal to check that RAM data are not destroyed due to low voltage This checking is made within 50 msec after reset Not used fixed at L Input of acknowledge signal for the key entry Acknowledge signal is input to accept function KEY ACK I I s cy and eject keys in the power off status On at input of H P O Notused open BUIN Battery detect signal input from the battery detect circuit L is input at low voltage SIRCS Sircs remote control signal input terminal Not used fixed at L 30 31 O Notused open 32 34 35 36 37 MTLIN Auto metal detection signal input terminal H auto metal Not used fixed at L RESET System reset signal input from the reset signal generator IC551 and reset switch S551 L reset L is input for several 100 msec after power on then it changes to H Tuner system power supply on off control signal output to the BA4908 IC611 TUNON copy H tuner power on BEEP K Beep sound drive signal output to the power amplifier IC751 Main system power supply on off control signal output to the B A4908 IC611 PW ON LT H power on x COLSEL 1 Setting terminal
10. for the illumination color L amber H green Fixed at L in this set 24 Pin No 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 Accessory detection signal input L accessory on Setting terminal for the test mode H test mode Normally fixed at L Telephone muting signal input terminal At input of H the signal is attenuated by 20 dB Serial data transfer clock signal input terminal Not used fixed at L UNISO O Serial data output terminal Not used fixed at L Serial data input terminal Not used fixed at L UNICKO O Serial data transfer clock signal output terminal Not used fixed at L VOLATT NN Muting on off control signal output to the electrical volume IC331 L muting on I2C CKO zn Clock signal output to the electrical volume 1C331 and FM AM tuner unit TU1 Standby on off control signal output to the power amplifier 1C751 AMPON oy i standby mode H amplifier on AMPATT o Muting on off control signal output to the power amplifier IC751 L muting on Ant Io Audio line muting on off control signal output H muting on Muting on off control signal output of the FM and AM tuner signal H muting on TU ATT Not used open AMSON Tape auto music sensor control signal output to the CKA2509AQ IC301 L is output to lower the gain for audio level at F
11. nd AM signal meter voltage detection input from the FM AM tuner unit TU1 VSM I A D input FMAGC Kma FM AGC level detection signal input from the FM AM tuner unit TU1 A D input DK input terminal A D input LSW801 LSW909 LSW912 to LSW917 ZS D BASS 6 5 4 3 2 REP 1 keys input NS l E input terminal A D input LSW901 to LSW907 S901 to S904 KEYINO OFF SOURCE SOUND MENU MODE al ENTER SEEK AMS ka a PRST SEEK AMS kl gt gt PRST keys input DSTSEL Destination setting terminal fixed at H in this set RCIN0 Rotary remote commander key Input terminal A D input QUALITY Noise level detection signal input at SEEK mode A D input Not used open O Not used open VREF Reference voltage 5V input terminal for A D converter Oo v Power supply terminal 5V for A D converter OSCOUT o Main system clock output terminal 18 432 MHz OSCIN Main system clock input terminal 18 432 MHz O ys Ground terminal for A D converter Sub system clock input terminal 32 768 kHz XOUT EN Sub system clock output terminal 32 768 kHz MMOD Not used fixed at L EE BUSON O Bus on off control signal output terminal L bus on Not used fixed at H SYSRST O Reset signal output terminal L reset Not used fixed at H LCDSO O Serial data output to the liquid crystal display driver CH LCDCE O Chip enable signal output to the liquid crystal displ
12. r M901 drive signal output H motor on aal o Nowe os ous Ground terminal for D A converter Not used open oS 96 NSMASK O Discharge control signal output terminal H discharge Not used open mom ose _ 100 DAVDD Powersupply terminal 5V for D A converter Not used open Loading tape operation motor control 2 LOADING EJECT Terminal s FORWARD REVERSE Ers SE M5 018 25
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