Yamaha Gx-700Vcd Schematic Only 电路图.pdf

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1、ABCDEFGH 1 2 3 4 5 6 IJKLMN 7 8 9 10 GX-700/GX-700VCD ISCHEMATIC DIAGRAM (GX-700 CD) * All voltage are measured with a 10M/V DC electric volt meter. * Components having special characteristics are marked Z?and must be replaced with parts having specifications equal to those originally installed. * S

2、chematic diagram is subject to change without notice. Point q (Pin59 of IC5) V : 5V/divH : 50 nsec/div DC range1 : 1 probe Point w (Pin39 of IC11) V : 2V/divH : 50 nsec/div DC range1 : 1 probe IC2 : AN8803SB Digital Servo Head Amp 36 PDAC EQ + 35 PDBD + 31 PDFR 34 PDF + 32 PDER 33 PDE + + + VCBA + V

3、CBA 29 F.BAL 7 RF OUT 6 RF + 27 FEOUT 28 FE + VCBA + VCBA + + 30 TBAL + 24 CROSS + 25 TEOUT 26 TE 8 RF IN RF DETECT 9 C.AGC AGC 10 ARF 17 RF DET ENV DETECT 11 C.ENV 12 C.EA 19 ENV BDO OFTR 13C.SBDO 14BDO 15C.SBRT 16OFTR 18GND 5VCC + 23 TEBPF + 22 VDET + 20VREF 1 PD 4 LDP 3 LDON 2LD 21LD OFF + OUT1 I

4、N1 VCC +VCC OUT2 1 2 3 45 +IN1IN2 +IN2 + 6 7 8 IC10 : PC4570G2 Dual OP-Amp IC1 : LA6541D 4 Channel BTL Driver VCC MUTE VIN1 VG1 VO1 VO2 GND GND 1 2 3 4 5 6 7 8 GND VO3 VO4 VG2 VIN2 REG OUT REG IN 9 10 11 12 13 14 15 VCC VREF VIN4 VG4 VO8 VO7 GND GND 30 29 28 27 26 25 24 23 GND VO6 VO5 VG3 VIN3 CD RE

5、S 22 21 20 19 18 17 16RESET + + REGULATOR LEVEL SHIFT 3 LEVEL SHIFT 2 BTL AMP 3 BTL AMP 2 LEVEL SHIFT 4 11K11K LEVEL SHIFT 1 BTL AMP 4 VCC 11K11K BTL AMP 1 IC3, 4 : TA8409S Full Bridge Motor Driver 9 26 7 3 8 5 1 STAND-BY CIRCUIT VREF CIRCUIT THERMAL SHUTDOWN CIRCUIT VCCVS VREF OUT 1 OUT 2 IN 1 IN 2

6、 GND IC7, 9 : TC74HC125AF Quad 3 State Bus Buffers 1A 1Y 1CVcc 4C 1 2 3 4112C 4A 4Y 12 13 14 2A 2Y 3C 3A 5 6 7GND3Y8 9 10 IC13 : TC74HC04AF Hex Inverters 1A 1Y 2Y VDD 6A 1 2 3 411 2A6Y 5A 12 13 14 3A 3Y 5Y 4A 5 6 7VSS4Y8 9 10 IC8 : TC74VHC14F Hex Schmit Trigger Inverters VDD14 I613 O612 I511 O510 I4

7、9 O48 I11 O12 I23 O24 I35 O36 VSS7 0V 0V CD HEAD AMP SPC & DAC ACT MOTOR DRIVE MOTOR DRIVE CD CPU LPF MUTING REGULATOR REGULATOR CD(Lch) 2.4 2.4 0 0 1.5 1.2 2.4 2.5 2.5 2.4 2.4 2.4 2.4 2.4 2.4 2.4 2.4 2.40.1 3.8 4.9 0 4.9 2.4 2.9 2.5 3.6 1.6 3.8 3.2 3.5 0.6 3.5 0 0 0 3.8 4.4 1.9 0 0.2 0.60.2 6.3 6.2

8、 2.4 2.4 2.4 3.0 0 0 0 2.8 2.7 2.4 2.4 6.3 2.5 2.4 2.4 2.7 2.7 0 0 0 3.1 2.4 2.4 2.4 0.8 2.5 6.2 0 0 0 6.2 0.9 11.1 0 1.1 4.8 0 0 4.8 1.1 0 11.1 1.2 2.7 0 0 6.2 0 0 4.7 0 2.5 1.2 2.5 2.2 4.9 0 0 2.4 2.3 4.9 0 4.9 4.7 2.4 0 2.4 4.9 0 2.4 2.4 4.9 0.6 0 1.2 0.2 0 2.4 2.5 2.5 2.6 2.3 2.4 2.4 2.4 2.4 2.4

9、 2.3 2.4 2.4 4.3 4.9 0 4.7 0 0 0 0 4.7 2.4 0 4.9 2.4 2.4 4.85.5 8.54.9 7.9 7.9 0 1.2 1.8 1.2 1.20 0 0 2.7 0 0 0 0 0 6.8 6.8 6.8 6.311.1 4.8 0 4.7 4.70 0 4.8 4.84.8 0 4.8 4.7 4.7 0 0 0 0 0 4.8 0 04.9 0 4.6 4.3 0 0 4.8 0 0 4.7 0 0 0 0 0 0 4.8 0 0 0 0 0 0 0 0 4.8 0 0 0 0 0 0 0 0 0 0 4.3 4.7 2.1 2.3 0 0

10、 0 0 0 0 0 0 0 4.8 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 4.7 4.7 4.7 4.8 4.8 0 0 0 0 0 0 0 0 4.8 0 0 4.8 4.8 4.8 -11.9 -11.9 0 0 0 0 -11.9 0 0 0 -12.0 12.4 0 0 0 q w 8 3 1 2 6 5 7 4 1 2 5 4 3 6 14 12 13 11 109 46 5 2 1 89 7 3 7 8 14 1011 66 MAIN(1) P73 A-2 INPUT(1) P68 A-9 EFFECT(1) P72 I-5 RadioFans.CN 收音机

11、爱 好者资料库 ABCDEFGH 1 2 3 4 5 6 IJKLMNO 7 8 9 10 GX-700/GX-700VCD ISCHEMATIC DIAGRAM (GX-700VCD VCD) * All voltage are measured with a 10M/V DC electric volt meter. * Components having special characteristics are marked Z?and must be replaced with parts having specifications equal to those originally i

12、nstalled. * Schematic diagram is subject to change without notice. Point q (Pin59 of IC5) V : 5V/divH : 50 nsec/div DC range1 : 1 probe Point w (Pin39 of IC11) V : 2V/divH : 50 nsec/div DC range1 : 1 probe IC2 : AN8803SB Digital Servo Head Amp 36 PDAC EQ + 35 PDBD + 31 PDFR 34 PDF + 32 PDER 33 PDE +

13、 + + VCBA + VCBA 29 F.BAL 7 RF OUT 6 RF + 27 FEOUT 28 FE + VCBA + VCBA + + 30 TBAL + 24 CROSS + 25 TEOUT 26 TE 8 RF IN RF DETECT 9 C.AGC AGC 10 ARF 17 RF DET ENV DETECT 11 C.ENV 12 C.EA 19 ENV BDO OFTR 13C.SBDO 14BDO 15C.SBRT 16OFTR 18GND 5VCC + 23 TEBPF + 22 VDET + 20VREF 1 PD 4 LDP 3 LDON 2LD 21LD

14、 OFF + OUT1 IN1 VCC +VCC OUT2 1 2 3 45 +IN1IN2 +IN2 + 6 7 8 IC10 : PC4570G2 Dual OP-Amp IC1 : LA6541D 4 Channel BTL Driver VCC MUTE VIN1 VG1 VO1 VO2 GND GND 1 2 3 4 5 6 7 8 GND VO3 VO4 VG2 VIN2 REG OUT REG IN 9 10 11 12 13 14 15 VCC VREF VIN4 VG4 VO8 VO7 GND GND 30 29 28 27 26 25 24 23 GND VO6 VO5 V

15、G3 VIN3 CD RES 22 21 20 19 18 17 16RESET + + REGULATOR LEVEL SHIFT 3 LEVEL SHIFT 2 BTL AMP 3 BTL AMP 2 LEVEL SHIFT 4 11K11K LEVEL SHIFT 1 BTL AMP 4 VCC 11K11K BTL AMP 1 IC3, 4 : TA8409S Full Bridge Motor Driver 9 26 7 3 8 5 1 STAND-BY CIRCUIT VREF CIRCUIT THERMAL SHUTDOWN CIRCUIT VCCVS VREF OUT 1 OU

16、T 2 IN 1 IN 2 GND IC7, 9 : TC74HC125AF Quad 3 State Bus Buffers 1A 1Y 1CVcc 4C 1 2 3 4112C 4A 4Y 12 13 14 2A 2Y 3C 3A 5 6 7GND3Y8 9 10 IC13 : TC74HC04AF Hex Inverters 1A 1Y 2Y VDD 6A 1 2 3 411 2A6Y 5A 12 13 14 3A 3Y 5Y 4A 5 6 7VSS4Y8 9 10 IC8 : TC74VHC14F Hex Schmit Trigger Inverters VDD14 I613 O612

17、 I511 O510 I49 O48 I11 O12 I23 O24 I35 O36 VSS7 0V 0V NO.TERMINALI/OFUNCTION 1A+3.3V+3.3V POWER SUPPLY FOR ANALOG VIDEO 2CVOUTOCOMPOSITE VIDEO OUT 3COUTOC VIDEO OUTPUT (S) 4YOUTOY VIDEO OUTPUT (S) 5VGNDANALOG VIDEO GROUND 6VGNDANALOG VIDEO GROUND 7R+5VDIGITAL +5V POWER SUPPLY 8D+3.3VDIGITAL +3.3V PO

18、WER SUPPLY 9D+3.3VDIGITAL +3.3V POWER SUPPLY 10DGNDDIGITAL GROUND 11DGNDDIGITAL GROUND 12XCKIAUDIO EXTERNAL FREQUENCY CLOCK 13EMPHOAUDIO EMPHASIS OUTPUT 14DILRCKOAUDIO LEFT RIGHT CLOCK 15HRDYOHOST DATA READY 16DISCKOAUDIO BIT CLOCK 17DIDATAOAUDIO DATA SERIAL BUS 18HINTOHOST INTERRUPT 19SBCKOSUBCODE

19、CLOCK FOR CD-G 20VRSTIHARDWARE RESET (LOW ACTIVE) 21HCKIHOST CLOCK 22HDIOI/OHOST SERIAL DATA BUS 23CDSCKICD BIT CLOCK 24CDDATAICD DATA 25CDLRCKICD LEFT RIGHT CLOCK 26IPFLGICD DATA ERROR FLAG (C2P0) 27HSELIHOST ADDRESS/DATA SELECT 28SUBCISUBCODE DATA FOR CD-G 29CLDCKISUBCODE FRAME SYNC FOR CD-G 30BLK

20、CKISUBCODE BLOCK SYNC FOR CD-G CONNECTION TERMINAL SPECIFICATION NOTE: None of the components of the VCD module can be supplied separately. Only a VCD module unit (VZ150200) is available. VCD MODULE VZ150200 2. SUBCODE INTERFACE 3. AUDIO OUTPUT INTERFACE 4. HOST INTERFACE HOST READ TIMING HOST WRITE

21、 TIMING CD HEAD AMP SPC & DAC ACT MOTOR DRIVE MOTOR DRIVE CD CPU LPF MUTING REGULATOR REGULATOR CD(Lch) 2.4 2.4 0 0 1.5 1.2 2.4 2.5 2.5 2.4 2.4 2.4 2.4 2.4 2.4 2.4 2.4 2.40.1 3.8 4.9 0 4.9 2.4 2.9 2.5 3.6 1.6 3.8 3.2 3.5 0.6 3.5 0 0 0 3.8 4.4 1.9 0 0.2 0.60.2 6.3 6.2 2.4 2.4 2.4 3.0 0 0 0 2.8 2.7 2.

22、4 2.4 6.3 2.5 2.4 2.4 2.7 2.7 0 0 0 3.1 2.4 2.4 2.4 0.8 2.5 6.2 0 0 0 6.2 0.9 11.1 0 1.1 4.8 0 0 4.8 1.1 0 11.1 1.2 2.7 0 0 6.2 0 0 4.7 0 2.5 1.2 2.5 2.2 4.9 0 0 2.4 2.3 4.9 0 4.9 4.7 2.4 0 2.4 4.9 0 2.5 2.4 2.5 4.9 0.6 0 1.2 0.2 0 2.4 2.5 2.5 2.6 2.3 2.4 2.4 2.4 2.4 2.4 2.3 2.4 2.4 4.3 4.9 0 4.8 0

23、0 0 0 4.8 0 0 4.9 2.4 2.4 2.4 4.85.5 8.54.9 7.9 7.9 0 1.2 1.8 1.2 1.20 0 0 2.7 0 0 0 0 0 6.8 6.8 6.8 6.311.1 4.8 0 4.8 4.8 0 0 4.84.8 4.8 0 4.8 4.8 4.8 0 0 0 4.9 4.8 0 0 0 4.6 4.3 0 0 4.8 0 0 4.8 0 0 0 0 0 0 4.8 0 0 0 0 0 0 0 0 4.8 0 0 0 0 0 0 0 0 0 0 4.3 0 4.8 4.7 2.0 2.3 0 0 0 0 0 0 0 0 0 4.8 0 0

24、0 0 0 0 0 0 0 0 0 0 0 0 4.7 4.8 4.8 4.8 4.8 0 0 0 0 0 0 0 04.8 4.8 4.8 4.8 -11.9 -11.9 0 0 0 0 -11.9 0 0 0 -12.0 12.4 0 0 0 4.8 0 0 2.42.4 4.9 4.94.90 0 4.80 0 0 0 0 0 4.8 4.8 0 4.8 4.8 4.8 q w 8 3 1 2 6 5 7 4 1 2 5 43 6 14 7 3 7 5 63 4 14 2 1 5 4 6 21 14 12 13 11 109 46 5 2 1 89 7 3 8 14 1011 VCD (

25、1) VCD (2) 67 MAIN(1) P73 A-2 INPUT(1) P69 A-9 EFFECT(1) P72 I-5 EFFECT(1) P72 A-5 RadioFans.CN 收音机爱 好者资料库 ABCDEFGH 1 2 3 4 5 6 IJKLMN 7 8 9 10 GX-700/GX-700VCD ISCHEMATIC DIAGRAM (GX-700 INPUT) The voltages are measured by LH tape at PLAY mode (no-signal condition) Only the voitages () are at REC m

26、ode. G DOLBY NR OFF * All voltage are measured with a 10M/V DC electric volt meter. * Components having special characteristics are marked Z?and must be replaced with parts having specifications equal to those originally installed. * Schematic diagram is subject to change without notice. IC3, 4 : TC

27、4052BF Dual 4 Channel Analog Multiplexers/Demultiplexers INHIBIT 0 0 0 0 1 B 0 0 1 1 X A 0 1 0 1 X 0 x, 0y 1x, 1y 2x, 2y 3x, 3y NONE IC7 : LC75393E Electronic Volume Control CCB BUS INTERFACE DECODER + LATCHES RSBC2 RHP1 RHP2 RRECOUT10 RRECIN10 RRECOUT1 RCOM1 RH RF2C1 RF2C2 RF2C3 RF1C1 RF1C2 RF1C3 R

28、TIN RSVROUT 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 LSBC2 LHP1 LHP2 LRECOUT10 LRECIN10 LRECOUT1 LCOM1 LH LF2C1 LF2C2 LF2C3 LF1C1 LF1C2 LF1C3 LTIN LSVROUT 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 RSBC1 RCOM2 R1dBOUT R10dBIN R10dBOUT RVSS CE DI CL DVSS LVSS L10dBOUT L10dBIN L1dBOUT LCOM2 LSBC1 4

29、9 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 VCOFF VCON DIRECT PASS DIRECT PASS VCOFF VCON RSVRIN RVCOUT VDD RVref1 RVref2 RIN VC4 VC3 VC2 VC1 LIN LVref2 LVref1 MICIN LVCOUT LSVRIN 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 IC5 : PD4066BG Quad Analog Switch/Multiplexer SW A IN/OUT1 OUT/IN2 OU

30、T/IN3 IN/OUT4 CONT B5 CONT C6 VSS7 14VDD 13CONT A 12CONT D 11IN/OUT 10OUT/IN 9OUT/IN 8IN/OUT SW D SW B SW C SIG/A SIG/B SIG/D SIG/C 16 VDD 6 INHIBIT 10A 9B 8VSS 7VEE 12X0 14X1 15X2 11X3 1Y0 5Y1 2Y2 4Y3 LEVEL CONVERTER BINARY TO 1-OF-4 DECODER WITH INHIBIT SW SW SW SW SW SW SW SW 13X 3Y IC10 : BA1521

31、8N Dual OP-Amp IN1 2 +IN1 3 VCC 4 +IN2 5 IN2 6 OUT2 7 +VCC 8 OUT1 1 + + IC1 : LB1641 Motor Driver 23 P1 5 IN 1 1 GND 4VZ 6IN 2 OUT 1 8 VCC 2 10 OUT 2 9 P2 INPUT LOGIC PRE DRIVER 7 VCC 1 IC2 : PC1330HA 2 ch Head Selector Switch INVERTER COMPARATOR 1 SWR 1 2 GND 3 SWP 1 4 CONT 5 GND 6 VCC 9 SWR 2 8 GN

32、D 7 SWP 2 105Hz BPF VREF BIAS 340Hz BPF 1kHz BPF 3.4kHz BPF DIF 10.5kHz BPF PEAK HOLD PEAK HOLD PEAK HOLD PEAK HOLD PEAK HOLD RES RES RES RES MPX DEC RES REFFERENCE CURRENT 6 7 8 9 5 4 3 2 1 13 12 11 10 14 15 16 17 18BIASC VREFC BREF N. C. N. C. DIF OUT C IN A IN VCC GND A OUT TEST N. C. N. C. SEL C

33、 B A A C C A IC26 : BA3835S 5-Band BPF and Peak Hold for Spectrum Analyzer IC9, 11, 21 : PC4570G2 Dual OP-Amp + OUT1 IN1 VCC +VCC OUT2 1 2 3 45 +IN1IN2 +IN2 + 6 7 8 IC6 : CXA1897Q Dolby B-Type Noise Reduction System with Recording/Playback Equalizer 17222019 REC EQ CTL REC EQ CTL GND D PB IN1 NRSW G

34、ND AGC OUT1 VCC 10K 40K 10dB AMP IREFMUTE 36 D TC1 DR OUT1 REC IN1 DECK AB A EQ B EQ REC OUT1 REC OUT2 SPEED FP CAL GP CAL REC IN2 DR OUT2 VCC RFC AMS OUT AMS GAIN 35 34 32 30 29 27 26 2512 24 D REC IN1 D IREF GND 31 NR D L OUT2 NR AMS 182115161314 45464847 REC EQ REC EQ 11 10 9 8 7 6 AGC IREF AGC I

35、N1 D PBIN2 MODE AGC OUT2 D TC2 GND IREF VG AGC TC D REC IN2 REC MUTE D L OUT2 AGC IN2 10K 40K 10dB AMP 5 433 3 2 1 4443 GND PB OUTB1 PB OUTA1 PB FB21 PB FB11 PB INB1 PB INA1 PB INA2 PB INB2 PB FB12 PB FB22 PB OUTA2 PB OUTB2 GND GND 413937 GND GND 23 3840 28 42 Point e (Pin37 of IC8) V : 2V/divH : 20

36、 sec/div DC range1 : 1 probe Point r (Pin39 of IC8) V : 2V/divH : 50 nsec/div DC range1 : 1 probe Point t CH1 : Collector of Q19 CH2 : Anode of D11 H : 0.5 sec/divDC range1 : 1 probe V : 2V/div (CH1) V : 2V/div (CH2) (This waveform is not available by pushing the power switch ON and OFF.) CH 1 CH 2

37、With the POWER ON, disconnect the A/C power cord. Reconnect the A/C power cord and the above waveforms will start. Disconnect the power cord from the AC outlet. 0V0V 1 2 3 4 5 6 7 8 9 10 11 12 13 1. R REC 2. METAL 3. F REC 4. CASS IN 5. CrO2 6. +SOL 7. SENSOR OUT 8. +5V SENSOR 9. PLAY SW 10. +MTR 11

38、. COM 12. MTR SPEED B 13. MTR SPEED A MAIN PCB + B A MABUCHI MTR MECHA CHASSISPH TYPE (JST) SOL 1 2 3 4 5 1. LOAD OUT (+) 2. LOAD IN (+) 3. LOAD OUT 4. COM 5. LOAD IN LOADING PCB PH TYPE (JST) MTR + 1. Lch R / P HD PH CONNECTOR + + L R E HD + 2. Lch 3. Rch 4. Rch + 5. E 6. E+ INPUT SELECTOR BUFFER M

39、OTOR DRIVE MECHANISM CONTROL RESET MAIN CPU SPECTRUM ANALYZER REGULATOR REGULATOR PRE AMP MUTING REGULATOR MUTING BUFFER TONE AMP ELECTRONIC VOLUME CONTROL HEAD EQ AMP DOLBY B-TYPE PROCESSOR REC/PB SW BIAS OSC TUNER CD TAPE PB 0 0 0 8.0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.7 11.2 11.2 11.5 11.2 12.2 12.2 12.

40、2 TAPE SPEED ADJ. BIAS ADJ. (Lch) BIAS ADJ. (Lch) 0 0 0 0 0 0 0 4.9 4.6 0 0 0 0 0 23.1 0 0 00 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2.4 7.4 4.0 4.0 1.2 0 0 2.5 2.4 4.0 4.0 4.0 1.3 1.3 2.6 2.6 1.2 4.0 3.9 4.0 4.0 4.1 0.3 8.6 8.6 4.0 2.6 4.0 3.4 3.4 PB LEVEL ADJ. (Lch) REC LEVEL ADJ. (Rch) REC LEVEL ADJ.(

41、Lch) 0.3 4.0 2.6 4.0 3.9 4.0 1.1 4.1 2.5 4.4 8.0 8.0 PB LEVEL ADJ. (Rch) 0.5 0.7 12.2 12.2 0 0 0.5 0.7 1.0 0 0 9.0 9.09.0 9.0 4.7 0 0 0 0 0 0 4.7 9.0 9.0 9.0 -8.4 9.0 9.0 0 0 0 00 0 0 0 0 0 9.0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 -8.3 -8.4 4.7 9.0 -8.4 9.0 9.0 4.4 9.0 4.4 4.4 4.4 4.4 4.4 2.3

42、 4.6 4.4 4.4 4.4 4.4 4.4 4.4 4.4 0 0 4.4 4.3 4.2 4.3 4.2 4.4 4.4 4.4 4.3 4.4 4.3 4.2 4.4 4.2 4.2 4.4 4.4 4.4 4.4 4.2 4.4 4.4 4.4 4.4 4.4 12.3 0 0 0 0 0 0 -11.9 4.9 4.9 4.8 4.8 4.8 4.7 4.5 4.6 4.7 4.7 4.7 4.7 4.7 4.7 4.7 4.6 4.6 4.7 4.7 4.1 4.1 4.7 1.8 4.8 4.8 4.8 4.8 4.8 1.6 4.6 2.1 4.9 5.1 4.6 4.7

43、4.7 4.5 4.7 4.7 4.7 2.1 4.7 4.7 4.4 4.8 4.8 5.5 5.5 4.7 4.6 4.9 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 00 0 0 0 2.1 0 0 0 0 0 0 4.1 4.6 2.9 1.2 1.8 1.7 2.3 1.9 2.3 1.7 4.6 4.8 5.2 0.9 0.80.3 1.7 1.8 2.9 1.2 2.4 4.7 2.4 1.4 2.4 2.40 0 5.5 9.0 -11.9 0.7 12.3 0.7 0.4 4.9 4.9 9.0 9.6 9.6 0 4.8

44、5.5 12.4 12.4 5.5 2.1 5.2 0 0 0 0 0 0 0 0 0 0 0 0 12.4 9.7 9.7 0 13.0 6.1 6.1 0 0 0 0 0 0 -11.9 -11.9 -11.9 12.3 0 0 0 4.9 4.7 4.7 9.0 -8.4 0 0 4.7 0 0 00 0 0 0 0 0 0 0 0 0 0 0 0 t r e (8.1) (4.6) (0.1) (0.2) (14.4) (3.4) (0) (0) (0) (0) (3.4) (4.9) (15.0) (5.5) (21.8) (15.0) (15.0) (0) (0) (14.4) (

45、1.6) (4.6) (0) (0) (4.6) (0) (0.7) 14 7 (4.6) (0.6) (4.7) (0) (0) (4.8) (3.0) (2.0) (3.0) CASS INCASS CASSCASS 68 P72 I-4 SAME PAGE M-8 SAME PAGE M-9 SAME PAGE N-8 P74 H-6 P66 L-2 SAME PAGE K-6 P70 E-6 P70 H-5 P73 A-4 P73 H-7 P73 A-3 SAME PAGE B-9 P70 E-1 P72 I-6 SAME PAGE A-7 SAME PAGE A-5 SAME PAG

46、E A-6 RadioFans.CN 收音机爱 好者资料库 ABCDEFGH 1 2 3 4 5 6 IJKLMNO 7 8 9 10 GX-700/GX-700VCD ISCHEMATIC DIAGRAM (GX-700VCD INPUT) The voltages are measured by LH tape at PLAY mode (no-signal condition) Only the voitages () are at REC mode. G DOLBY NR OFF * All voltage are measured with a 10M/V DC electric v

47、olt meter. * Components having special characteristics are marked Z?and must be replaced with parts having specifications equal to those originally installed. * Schematic diagram is subject to change without notice. IC3, 4 : TC4052BF Dual 4 Channel Analog Multiplexers/Demultiplexers INHIBIT 0 0 0 0

48、1 B 0 0 1 1 X A 0 1 0 1 X 0 x, 0y 1x, 1y 2x, 2y 3x, 3y NONE IC7 : LC75393E Electronic Volume Control CCB BUS INTERFACE DECODER + LATCHES RSBC2 RHP1 RHP2 RRECOUT10 RRECIN10 RRECOUT1 RCOM1 RH RF2C1 RF2C2 RF2C3 RF1C1 RF1C2 RF1C3 RTIN RSVROUT 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 LSBC2 LHP1 LHP2 LRECOU

49、T10 LRECIN10 LRECOUT1 LCOM1 LH LF2C1 LF2C2 LF2C3 LF1C1 LF1C2 LF1C3 LTIN LSVROUT 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 RSBC1 RCOM2 R1dBOUT R10dBIN R10dBOUT RVSS CE DI CL DVSS LVSS L10dBOUT L10dBIN L1dBOUT LCOM2 LSBC1 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 VCOFF VCON DIRECT PASS DIRECT PASS VCOFF VCON RSVRIN RVCOUT VDD RVref1 RVref2 RIN VC4 VC3 VC2 VC1 LIN LVref2 LVref1 MICIN LVCOUT LSVRIN 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 IC5 : PD4066BG Quad Analog Switch/Multiplexer SW A IN/OUT1 OUT/IN2 OUT/IN3 IN/OUT4 CONT B