Teac-MC-DX450i-DAB-Service-Manual电路原理图.pdf

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1、CX-225iDAB/MC-DX450iDAB NOTESCONTENTS 1 SPECIFICATIONS.2 2 MICROCONTROLLERPINFUNCTIONS .3 3 EXPLODEDVIEWANDPARTSLIST .6 4 PCBOARDSANDPARTSLISTS.9 5 INCLUDEDACCESSORIES .17 Micro Hi-Fi System PC boards shown are viewed from parts side. The parts with no reference number or no parts number in the expl

2、oded views are not supplied. As regards the resistors and capacitors, refer to the circuit diagrams supplied pripor to this manual. Parts marked with this sign are safety critical components. They must be replaced with designated components. FOR UK ! RadioFans.CN 收音机爱 好者资料库 2 CX-225iDAB/MC-DX450iDAB

3、 1 SPECIFICATIONS AMPLIFIER section Output Power (L+R) 5 W + 5 W Output Power (Subwoofer) 15 W Input Sensitivity 500 mV Frequency Response 50 to 20,000 Hz Radio Section (FM) Frequency Range 87.50 to 108.00 MHz (50 kHz step) Sensitivity (S/N30dB) 10 dBV/m Radio Section (DAB) Frequency Range Band III:

4、 5A to 13F (174.928 MHz to 239.200 MHz) CD PLAYER Section Frequency Response 20 to 20,000 Hz (1 dB) Signal-to-Noise Ratio 55 dB Wow and Flutter Unmeasurable SPEAKER Type Full range flat type Impedance 4 ohms SUBWOOFER Impedance 8 ohms GENERAL Power Requirements 230 V AC, 50 Hz Power Consumption 74 W

5、 ( Standby: 0.35W ) Dimension (W x H x D) Main Unit 247 x 169.5 x 135 mm L F 3A L/250V AMP Part POWER Part LED Part 12 CN73 F701 D701 D702 C701 0.022u D703 1N4003 D704 1N4003 C702 1000/16V C703 0.01uF C705 470/16V 1 2 4 3 RY71 D706 D707 1110987654321 BN82 D708 1SS133 21 CN74 321 CN72 Q702 C107MT Q70

6、3 A102MT C706 0.0047uF(500V) R704 220 1110987654321 CN70 321 CN76 2 4 3 1 D709 11 10 9 8 7 6 5 4 3 2 1 IC71 C707 3300/25V C708 3300/25V C709 0.01uF C710 0.01uF R705 8.2K(1/4W) R706 8.2K(1/4W) BD72 BD73 BD74 BD75 R707 18K C713 4.7/50V C714 4.7/50V R708 12K R709 12K C715 47/25V R710 680 C716 47/25V R7

7、11 680 - + - + CM1 CM2 8765 4321 IC73 GND IN OUT2 1 3 IC75 C717 6800uF/16V C718 0.01uF C719 100/25V C720 0.01uF C721 100P R712 33K R739 22K R713 33K R715 33K R716 22K C724 0.01uF 11 10 9 8 7 6 5 4 3 2 1 IC72 C726 4.7/50V C727 4.7/50V R722 18K BD76 BD77 R723 12K R726 12K R727 10(1W) C730 0.047u(M) R7

8、28 10(1W) C731 0.047u(M) R729 10(1W) C732 0.047u(M) R730 10(1W) C733 0.047u(M) 6 1 54 23 RY72 Q705 C107MT D710 1SS133 6 1 54 23 RY73 D713 1SS133 21 CN78 C740 0.1uF C741 0.01uF C742 0.01uF 54321 CN79 C723 0.027u C735 0.01uF 54321 CN71 C736 0.01uF(M) C737 0.01uF(M) C743 0.022u C747 0.01uF C746 0.01uF

9、C744 4.7/50V C745 0.01uF 21 CN81 54321 CN77 Q707 C107MT Q706 C107MT R732 220 Q704 A102MT R733 22K OUT GND VCC 1 4 3 IC76 C748 0.01uF Q709 C107MT R734 10K R735 560 R736 560 C749 5600P(M) Q710 A102MT C750 0.12uF D712 D711 1N4003 D714 D715 1N4003 C751 3300/25V C752 1000/25V R737 10K(1/4W) R738 10K(1/4W

10、) C755 0.01uF C756 0.01uF C753 47/25V BD78 C759 0.12uF C757 0.01uF C758 0.01uF F702 F703 D716 D717 C754 1000/25V 1 2 3 4 5 6 7 8 9 10 11 12 13 14 SAD1 CJJ6L001Z 2 45 6 7 8 9 BD79 C760 0.01uF C761 0.01uF C762 1000/25V VOUT GND ON/OFF VIN 4 12 3 IC74 R740 100K D718 1SS133 321 CN91 OB LD91 AGND AGND AG

11、ND AGND AGNDAGND AGNDAGND AGND AGNDAGND AGND AGND AGND AGND AGNDAGND AGND AUDIO_L AUDIO_R AGND +12VA -12VA AGND AGND -12VA AGND AGND AGND SPK_ON AGND AGND AGND AGND AGND PWR_ON AGND AGND SPK_ON AUDIO_L AUDIO_L AUDIO_R AGND AGND AGND SPK_ON1 AGND AGND AGND AGND AGND AGND AGND AGND M+12V AGND AGND AGND M+12V PWR_ON AGND AGND AGND SPK_ON1 AUDIO_R -12VA+12VA AGNDAGNDAGND AGND AGND GND SUB WOOFER UNIT