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XR-C5200 SERVICE MANUAL E Model Model Name Using Similar Mechanism Tape Transport Mechanism Type XR-C5100 MG-25F-136 SPECIFICATIONS FM/MW/SW CASSETTE CAR STEREO MICROFILM XR-C5200 6-3. SCHEMATIC DIAGRAM ­ MAIN Board (1/2) ­ · See page 18 for Waveforms. · See page 29 for IC Block Diagrams. ­ 21 ­ ­ 22 ­ XR-C5200 6-4. SCHEMATIC DIAGRAM ­ MAIN Board (2/2) ­ · See page 30 for IC Block Diagrams. (Page 27) ­ 23 ­ ­ 24 ­ XR-C5200 6-6. SCHEMATIC DIAGRAM ­ KEY Board ­ · See page 18 for Waveform. (Page 24) ­ 27 ­ ­ 28 ­ · IC Block Diagrams ­ MAIN Board ­ IC21 TB2118F-EL-S AM CP OUT FM CP OUT A-GND D-GND IC331 TDA7462D013TR 24 23 22 21 20 19 18 17 AMP 16 15 14 13 PAUSE DETECT INPUT GAIN & AUTO ZERO TREBLE/ BASS CONTROL CIRCUIT FRONT FADER 28 27 26 25 24 23 SE3L SE3R MUTE SDA SCL PAUSE AM IN FM IN VDD REG VCC VCC 4BIT SWALLOW COUNTER SEEK/RECP PRESCALLER 12BIT PROGRAMMABLE COUNTER 20BIT IF COUNTER 40BIT SHIFT REGISTER 18BIT ON/OFF BUFFER SERIAL INTERFACE I/O PORT OUTPUT PORT VDD2 AMP INPUT MULTIPLEXER & MIXING STAGE AMP REGULATOR SEEK/RECP + PHASE COMPARATOR REF SIG SE1L SE1R MD+ MD­ CDL+ CDL­ CDR­ CDR+ PDR PDGND PDL SE2L SE2R 1 2 3 4 5 6 7 8 9 10 11 12 13 FRONT SIDE SELECTOR + ­ + + ­ IFC VT XI VDD LOUDNESS CONTROL CIRCUIT VOLUME CONTROL CIRCUIT SOFT MUTE VOICE BANDPASS HP LP 22 OUT FL FRONT FADER COMPANDER REAR FADER LOUDNESS CONTROL CIRCUIT 21 OUT FR REAR SIDE SELECTOR 20 OUT RL INPUT GAIN OSCILLATOR REFERENCE DIVIDER REAR FADER 19 OUT RR 22BIT BEEP SUBWOOFER LP FADER 18 SUBOUT+ 17 SUBOUT­ SDA DIGITAL CONTROL CIRCUIT IIC BUS SCL 16 VDD 15 GND 18BIT SUBWOOFER OUT 1 XO 2 OSC 3 4 5 6 CE DIN CK DOUT 7 SR 8 I/O-1 9 I/O-2 10 11 OUT-1 OUT-2 12 VDD2 CREF 14 POWER SUPPLY IC351 IC301 CXA2509AQ-T4 LINEOUT2 TAPEIN2 PBOUT2 AUXIN2 PBEQ2 MSSW DIREF LB1930M-TLM 10 NC BUFFER CONTROL CIRCUIT BUFFER MOTOR DRIVE CIRCUIT 9 OUT1 8 NC 7 OUT2 6 P-GND IC611 BA3918-V2 VCC 1 NC 2 IN1 3 IN2 4 S-GND 5 GND NC NC REGULATOR 30 29 28 27 26 25 24 23 22 21 24dB 120µ/70µ T2 ­ + PBFB2 31 PBRIN2 32 PBREF2 33 PBFIN2 34 F2 TAPE EQ FWD/RVS VCT 35 PBGND 36 VCT + PBFIN1 37 PBREF1 38 PBRIN1 39 PBFB1 40 T1 120µ/70µ 1 PBEQ1 + ­ 20 MSMODE NR BIAS OVER VOLTAGE PROTECT + ­ 11 FM 12 GND + ­ 10 AM + ­ 5 VDD 6 AMP 7 VCC 8 ANT 9 COM + ­ X1 TAPE/AUX MS MODE 19 DRSW 18 TAPESW 17 INSW 16 NC LPF + ­ F3 14 MSOUT F1 X1 13 DGND BUS ON 1 BUS ON SWITCH RESET SWITCH BATTERY SWITCH 14 VCC RST 2 12 MSTC ­ + + ­ 11 G1FB BATT 3 13 12 11 10 RST BUS ON CLK IN BU IN 24dB 6 MSLPF 2 PBOUT1 3 VCC 4 5 TAPEIN1 AUXIN1 7 LINEOUT1 8 NC 9 NC 10 G2FB CLK 4 VREF 5 DATA 6 GND 7 9 DATA IN 8 DATA OUT ­ 29 ­ MODE2 MODE1 STB NC VCC MS ON/ 15 NC OFF DETECT IC581 BA8270F-E2 1 2 3 4 ­ 30 ­ 6-7. IC PIN FUNCTION DESCRIPTION · MAIN BOARD IC501 MN101C12GTB1 (SYSTEM CONTROLLER) Pin No. 1 2 3 Pin Name AVREF­ VSM KEYIN1 I/O I I I Function Reference voltage (0V) input terminal (for A/D converter) FM and AM signal mete