Primare-T21-tun-sm 电路图 维修手册.pdf

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1、 T21 Tuner Service Manual RadioFans.CN 收音机爱 好者资料库 1. Circuit Diagrams 2. Technical Specifications Note, Primare T30 is Similar. Confidential ! This document is not allowed to show for third part without written permission from Primare Systems AB. This document is subject to change without notice. Au

2、thor: Bjorn Holmqvist Primare Systems AB RadioFans.CN 收音机爱 好者资料库 1234 A B C D 4321 D C B A Title NumberRevisionSize A4 Date:25-Jun-2003Sheet of File:D:My Filesunderlag produktiont21EM1201 FrontpanelEM1201-02.DDBDrawn By: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 P1 16PIN 1 2 3 4 SW1 1 2 3 4 SW5 1 2 3 4

3、 SW2 1 2 3 4 SW3 1 2 3 4 SW6 1 2 3 4 SW7 1 2 3 4 SW9 R1 1K05 R2 820R R3 953R R4 1K1 R5 1K33 R6 1K6 R7 1K96 R8 2K49 STR 1 D 2 CLK 3 OE 15 Q1 4 Q2 5 Q3 6 Q4 7 Q5 14 Q6 13 Q7 12 Q8 11 QS 9 QS 10 U2 HEF4094BP D4 LED D5 LED D3 LED D2 LED D1 LED R10 1K3 R11 4K7 R12 4K7 R13 4K7 R14 4K7 R17 NC VCC STANDBYPR

4、ESETRDSCENTERSTEREO VCC 1 2 3 4 5 6 CON5 1 2 3 4 5 6 CON7 1 2 3 4 5 6 CON6 1 2 3 CON8 VCCVCC VCC UPDOWNSTOREDISPLAYPRESETIF/BLEND/MONOSTANDBY VCC 2 VOUT 1 GND 3 IR2 R15 10R C9 10u 16V R16 10K VCC IR-RECEIVER VCC C2 100N C1 10u 16V VCC R18 MRS25 C3 100N DISPLAY PCB File Name RadioFans.CN 收音机爱 好者资料库 T

5、echnical Specifications Tuning range (50 kHz steps): 87,5 -108,0 MHz Tuning range Japan (50 kHz steps): 75,5 - 90,5 MHz Usable Sensivity Mono: 0,9 uV, 75 DIN Usable Sensivity Stereo: 20 uV, 75 DIN Capture Ratio: 2,0 dB Image Rejection Ratio: 100 dB Signal-to-noise Ratio Mono: 76 dB Signal-to-noise R

6、atio Stereo: 70 dB Alternate Channel Attenuation: 90 dB, IHF AM Supression Ratio: 50 dB Subcarrier Product Rejection: 76 dB Total Harmonic Distortion Mono: 0,05% (Wide) Total Harmonic Distortion Stereo: 0,15% (Wide) Frequency Response: 20 Hz - 15 kHz +0,3/-0,8 dB Stereo Separation: 43 dB at 1 kHz (Wide), 40 dB at 70 Hz - 10 kHz Power consumption: Stand by 7W Output Voltage: 0,775 V Output Impedance: 600R Muting Level: 18 dBf, 2,2 uV, 75R Output Impedance: 75R