SERVICE MANUAL
Contents
1. capacitors in uF unless otherwise noted pF upF 2 EREEBBE m gt jo LEG lt m Boe 015 298 ppp i 1 B 8735 188139 50 WV or less are not indicated except for electrolytics 8704 MA8120 M lt 4 m wg RES 65 8 y i and tantalums 858 resistors are Q and 4W less unless otherwise iinternal component panel designation R553 100 lt 701 781 3800 16 8725 198139 B B Line R705 0 R554 100k 9625 55 8039 x 9 0 22 Tov F 8621 H 8 9 8059 95 az 20332 9 55 38 ee o o 5 0 84 z 219 5 un 54 pu 0622 5 5 zz Em 8550 0 1 0 38 100k EE 85 SE SSE 056 RP 8 252 8 B R52 t 2 2k 6 22 E 1 0622 a 294165 15 9 9 O s 0621 0622 TAI 4EKA T146 MUTING 8RIVE MUTING 0 15 5 4 2 E1 1 UNT rese B Boc E RESET Mu Te waiter R272 8282 R182 R172 B Be GENERATOR NABUST M TT EX Ez 5 R R284 Rigs 8174 f g BEEP 224 2 24 5 1 l B C551 Cep 602 E 8601 AM i I2 o 4 0 1F 5 5v 8192 220k 1922. 5 5 ER 5 9 2 5 820 O 3 Rar R963 nous 922 5 519 5 90 550 220 amp 7 1 CL R955 1k 0 2 5 518 8 11 S Rd 380 T 220 EXE c 18 E a 3 MOSS 3 8 te MW 0 66 a 7 1 ateta amp a pop 3 8916 8917 Ages 5 cage ay 5 T 000000000000 N 8977 3 wel MEUM 3 wel S cle F m gt gt pio m i in n 5 99 5 se 8969 1970 OPS NS pes ey 1 SHT amp LI 330 220 x4 in al ca un 4 4 n 5 0 GREEN alal 9 9 9 Bl alal alal o o 0 8 SHIFT Si 5 KAJ 5 SHIFT SW 5981 1 um 8 55 ESET 85 5 95 gs a gs 1 0 1 1 OFF LC8901 LIQUID CRYSTAL BISPLAY 1 1 ENTER SET UP 1 ge is dc 14 4V and fed with regulated dc power Waveforms taken with a oscilloscope ACC and BATT cords Voltage variations may be noted due to normal production tol d waveforms are dc with respect to ground erances gnal conditions Circled numbers refer to waveforms Signal path APE PLAYBACK gt mpossible to measure gt AM MW e
3. Design and specifications are subject to change FM MW LW CASSETTE CAR STEREO SONY SECTION 6 DIAGRAMS IC Block Diagrams MAIN Board 21 TB2118F EL 10351 LB1930M TLM oo 9 2 VCC NC x lt 5 0 3 02 01 90 4 9 lt 9 9 3 como MOTOR 8 gt CIRCUIT circuit _ 27 our BUFFER S GND 5 6 P GND 4BIT SWALLOW REGULATOR COUNTER SEEK RECP SEEK RECP 4 PRESCALLER 1 12BIT PHASE SIG COMPARATOR PROGRAMMABLE COUNTER 20BIT th IF COUNTER SEFERENCE 40BIT SHIF OSCILLATOR ii DIVIDER REGISTER 188 ON OFF 188 BUFFER SERIAL OUTPUT INTERFACE PORT 2 N N N T 55 o IC331 TDA7462D SE3L MUTE SDA PAUSE a DETECT PAUSE NE LOUDNESS VOLUME TREBLE VOICE BANDPASS OUT FL BASS AUTO CONTROL CONTROL CONTROL ZERO CIRCUIT CIRCUIT CIRCUIT LP 1 OUT FR COMPANDER REAR FADER OUT RL s LOUDNESS CONTROL REAR CIRCUIT FADER OUT RR FRONT SIDE SELECTOR MIXING
4. e RATE TCSTATK 00 10 2 00 044 TLL d FF L LU 1 w 526 100k 7 1 501 E ck ETT ER E jj 5509 LCE 6 Tr 19527 1 0 MASTER U COM 206 3 lt 2 528 100k 5507 Ik PST 1 fien 100 0 1506 Tk PSO yo lt 16501 Tone y l 1 is 59 MNTOT T2GTCI R505 1 PCE R504 1 TAZ m R503 TK AMPON TAQ AMPMUT TN ero 12331 ANY i ELECTRICAL 306 FMON 10581 TUON 1947462 VOLUME TEST R502 100 SIR BUIN NOSE lt R532 8 100k 8501 Mr 100K 8 C334 0 01 B C507 2200 592 s 58 2961528154 e f 9 4 9 E M z ANY 8 5 1 et amp 2 8 R592 5 MEO 8 7 5 2012 9 8 E B075 H 9591 592 NN 5 BACKUP CHECK EEG CHECK 09 a 2 4 4 4 4 Se ee Y 3 T 4 T T TTTT Y Y Y Y Y gt re 0 PT 5 an od ZEEL i C YY Y W Y YYY YYYYY Y TO mem 2 2 Page 23 24
5. STAGE INPUT MULTIPLEXER amp ui 2 5 nae lt Sa cw SUBWOOFER ip FADER SUBWOOFER SUBOUT OUT SUBOUT DIGITAL CONTROL CIRCU gt BUS VDD GND 17 21 R201 Alay lalala 270 T eas 5 W RS 1 if 8 0208 sk T
6. input terminal 80 AD ON Power supply control output of AD conversion 81 PW SEL Power selection initialise 82 ILLON Illumination power supply control output 83 REL Input to detect rotation of reel table 84 POS3 85 POS2 86 POSO 87 POSI Tape position signal detection input 88 LM LOD Loading motor control output to a direction of loading 89 LM EJ Loading motor control output to a direction of ejection 90 TAPON TAPE power supply control output When on is output is output otherwise when off is output L is output 91 Capstan motor control signal output terminal of 92 PW ON System power supply control output 93 FM ON power supply control output terminal 94 TUNON TUNER power supply control output terminal 95 DAVSS Ground 96 to 99 NCO Not used 100 DAVDD Not used Power supply for DA converter 30 o This datasheet has been downloaded from www EEworld com cn Free Download Daily Updated Database 100 Free Datasheet Search Site 100 Free IC Replacement Search Site Convenient Electronic Dictionary Fast Search System www EEworld com cn Datasheets Cannot Be Modified Without Permission Copyright O Each Manufacturing Company
7. taken with a VOM Input impedance 10 MQ gt gt TAPE PLAYBACK ations may be noted due to normal production tol 6 6 IC FUNCTION DESCRIPTION 1 501 MASTER U COM MN101C12GTC1 Pin Name Function VREF Basic voltage side of AD conversion input VSM FM AM common signal meter A D conversion input terminal KEYINI KEYINO KEY AD conversion input DBASS IN Position detecting AD input terminal of D BASS DSTSEL Terminal for setting to select the value of destination FUNC SEL Function selecting AD conversion input Not used RC INO Rotary commander AD conversion input Basic voltage side of AD conversion input VDD Power supply OSC2 OSCI Radiator 18 432 MHz connecting terminal VSS Ground XI XO Sub clock for clock radiator 32 kHz connecting terminal MMOD GND Ground RC INI Rotary commander shift input SYSRST SYSTEM RESET control output BUSON BUS ON control output UNISO Serial data output UNISI Serial data input UNICKO Serial clock output UNICKI Serial clock input Not used KEYACK Key input acknowledge NOSESW Removing attaching front panel detection input BU IN BACK UP detection input terminal SIRCS Remote control input TELMUT TELEPHONE MUTE detection input TEST IN Test mode settin
8. 0 3216 H C191 1000p 751 il g 330 12 4 757 10 16V POWER 4 Vs AMPON 9 272 366017 00 CH DAR C754 32169 qo 16 16 H 2582157 0 7 cg C402 AMPMUT 3216 1 16751 8755 0 0 4 8 R603 1 y P lt AE 380 AS gt 11 BTATTAEKA x KEY ON SWITCH 5 E 2 14 2 1 14 0 C795 1 og TOR 0 32 14V s SO 5 556 Ih a 14 2 5 14 3 E I E E 86 jf 9553 9602 6755 MATH 4 8 XNIASI2 TX 47 15V 1050 i s Ws a P 0551 LAMP REGULATOR ARIVE e e 2 2 20 5 1 2012 5 55 y 8 69 Ey 6 6 10 9 Q O O i 7 17 7 7 7 4 Bu B A E Y YY Y BACK UP Note on Schematic Diagram 1 1 1 1 1 R714 632 9709 ern S724 199139 8702 C784 0 1 5216 lt 8708 096 2 1 95 69 8 C788 0 1 3216 lt fad i 782 0 1 3216 8721 158139 8707 MA4052 M ili dosa lt i T 39892 9752 158139 932 8 st 8712 8705 Leos aia 4 Er e 19558 3 mu mm Power voltage is dc 14 4V and fed with regulated dc power CET EE Hu jum supply from ACC and BATT cords ud F
9. Bi i spt 5 spozwoac 5 R 51818 x 5 55 ice yas 44 E zm 258 2 d bor rae EB Pb 6 21354 0 3216 15 IT 8851 8129 1 01 lt 4 5 gt RIZ 2 2K TAPE REGULATOR 0614 1 gt i PLL 1 C305 H CXA2509AQ T4 0 4 lt 15 4 gt To L21 104H pad 8351 S t sid Tk 14 214 1 4 o x 0 4 lt 14 1 gt 792 2012 5 3 2 P METER 6 E 26 0552 5 SEEK TAFE 14 2 lt 8 6 gt mum T REGULATOR amp hans g e e 2 M 3216 amp ru nc 8352 gt 188719 21 X m 4 9 7 1 6556 3 251 Bk 216 5 220 gs4 28 115 _ 2 CAPSTAN a 81 14 2 lt 0 gt 14 2 gt 41343 0555 5 BTCTTAEKA gt 15 AC 8 CAPSTAN aus SA taj MOTOR SWITCH 4 7K 1621 R32 68 IS 1 4 4 TB2118F v lo p e i 5 Mus 15 8 4 R519 100k 2 202 fon 1 E S ja 2 8121 AM R206 R108 R517 100k jj 22K zz 8 5 8 6207 107 SED EE 6107 R252 8152 tH 0 10k 10k 0 068 OFF gt B ON a 0151 5 gt TAPE L gt gt TAPE R MUTE 0 1 6 MUTE 2012 9 2012 ACC R513 2 2k 0 0 0 Tobe F Y 9251
10. M Voltage and waveforms are dc with respect to ground 1 under no signal conditions ES mark lt gt TAPE PLAYBACK Tir aeee 0 066 90 Z Impossible to measure oyar Q 6606 Voltages are taken with a VOM Input impedance 10 MQ 22 s Voltage variations be noted due to normal production 8 a 3 3 a tolerances 5 E g d Waveforms are taken with a oscilloscope B Voltage variations may be noted due to normal production tolerances Circled numbers refer to waveforms Signal path gt FM gt gt gt PLAYBACK KEY BOARB CNP901 Page 27 Se Aem NC Ape 2 545 IC901 jets sca 9942 2 5 5 fl 59 4 2 5 528 cows 2 542 LCB BRIVE 7 2 5 827 25 zs 8125 1B 55 0 526 5 0 vaa 5 2 5 525 8957 C954 0 1 2 5 5 apaza vo 16901 S24 CL 1184927 0 2 p 0 022 5 LC75824E 525 1 2 1 vss SEP wiiu Big 56 53 wrw we e
11. SERVICE MANUAL MICROFILM Tape track 4 track 2 channel stereo Outputs Wow and flutter 0 08 WRMS Frequency response 30 18 000 Hz Speaker impedance Signal to noise ratio Maximum power output Cassette type TYPE II IV 61dB Ge TYPE 58 dB abel Outputs Tone controls Power requirements FM 1 Tuning range 87 5 108 0 MHz Dimensions Aerial terminal External aerial connector Intermediate frequency 10 7 MHz Mounting dimensions Usable sensitivity 9 dBf Selectivity 75 dB at 400 kHz Mass Signal to noise ratio 65 dB stereo Supplied accessories 68 dB mono Harmonic distortion at 1 KHz 0 7 stereo 0 4 6 mono Separation 35 dB at 1 kHz Frequency response 30 15 000 Hz without notice MW LW Tuning range MW 531 1 602 kHz Aerial terminal Intermediate frequency Sensitivity Photo XR 4880 Model Name Using Similar Mechanism XR 4880 AEP Model UK Model XR C6100R Tape Transport Mechanism Type MG 25F 136 SPECIFICATIONS LW 153 281 kHz External aerial connector 10 7 MHz 450 kHz MW 30 pV LW 50 pV Speaker outputs sure seal connectors 4 8 ohms 35 W x 4 at 4 ohms Power aerial relay control lead Bass 8 dB at 100 Hz Treble 8 dB at 10 kHz 12 DC car battery negative earth Approx 188 x 58 x 181 mm w h d Approx 182 x 53 x 164 mm w h d Approx 1 2 kg Parts for installation and connections 1 set Front panel case 1
12. g input terminal RAMBU Reset detection input of RAM RESET Reset input terminal VOL MUT Electrical volume mute control output BEEP Control output for buzzer AMPMUT Power amplifier mute control output terminal AMPON Power amplifier STANDBY control terminal PLL CKD PLL CLK output terminal PLL CE PLL CE output terminal PLL SO PLL DATA output terminal PLL SI PLL DATA input terminal LCD SO LCD serial data output LCD CE LCD chip enable output terminal LCD CKO LCD serial clock output VOL SIO Electrical volume serial data output Not used VOL CKD Electrical volume serial data output ACC IN Accessory power supply detection input MUT System MUTE control output 50 Function Not used 51 AMSON L is output in AMS mode 52 N R OUT FWD REV control output 53 MTLON Metal control input output 54 TAPMUT Tape mute control output 55 DOLON Dolby control input output 56 AMSIN Input to detect existence of song during AMS mode 57 to 75 NCO Not used 76 ST O Combination stereo input and monaural output TI SD IN SIGNAL DETECTOR input terminal 78 REIN 1 79 REIN 0 Rotary encoder
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