Alto-DigmodDSP3-dsp-sch 电路图 维修手册.pdf

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1、12345678 A B C D 87654321 D C B A 84 U1C NE5523D8 D19 DLED ROSSO R89 10K R77 1K5 GND 7 6 5 + _ U4B LF412CD R70 82K R76 1K5 GND R71 82K R64 1K R631K 1 2 3 + _ U4A LF412CD R88 10K B1 B14 R7310K R7210K R212 R218 GND B10 R202 10K R29 10K R31 47K R2 1K R3 GND A-B R47 10K +5V R30 10K R36 3K3 R1410K B12 R2

2、34 GND R231 +VCC GND R38 1M5 R39 10K GND R41 47R GND R43 47K GND R28 4K7 R44 1K R34 47R 7 6 5 + _ U1B NE5523D8 C30 2n2F50V GND R79 2K7 C291.8nF50V R80 2K7 R75 2K7 GND B8 R97 10M A-B1 R86 15K R69 10K GND C50 R213 R65 1K5 R42 33K B12 C28 1nF GND 1 2 3+ _ U2A NE5523D8 R100 1M C22470pF GND R68 680R R62

3、1K 7 6 5 + _ U2B NE5523D8GND R61 1K R67 1K R66 1K +VCC R237 R228 R201 10K B9 C33220pF GND C26 470pF C32330pF R74 12K1/4W R216 10K1/4W B1 R214R211 B13 R85 12K1/4W R215 10K1/4W B16 GND R217 B7 R225 GND R223R224 C53 GND 1 2 3 + _ U1A NE5523D8 C37470pF R5410K R57 10K B4 R55 10K C36 470pF GND R56 10K B5

4、R87 47R B6 R99 1M R209 1M B30 R83 2K7 R81 3K3 +VCC R82 3K3 GND R78 2K2 7 6 5+ _ U10B GUAINA 8 9 10 + _ U10C GUAINA 14 13 12 + _ U10D GUAINA GNDGND 1 2 3 + _ U10A GUAINA R230 R232 GND R233 GND+VCC R235 GND R222 R221 R226 +VCCGND R220 R48 10K +5V 411 U10E GUAINA 411 U3E TL074CD 14 13 12 + _ U3D TL074C

5、D 8 9 10 + _ U3C TL074CD 7 6 5 + _ U3B TL074CD 1 2 3 + _ U3A TL074CD R59 100K R219 10K +VCC R58 100K R4 47K GND TO-U8-9 R208 100K B11 TO-U6-6 R50 10K GND R49 10K +VCC R51 10K R35 100K +VCC TO-U3-9R52 10K R53 10K R45 4K7 R46 2K2 GND D18 LED VERDE R1003 10K -VCC GND R12 15K R13 1K5 C23 3.9pF 1110 U5E

6、HEF4069 12 U5A HEF4069 34 U5B HEF4069 56 U5C HEF4069 TO-U5-4 TO-U5-6 1312 U5F HEF4069 R9 15K 98 U5D HEF4069 R10 1M C3 330pF R11 12K1 C4100nF R8 2K7 R7 2K7 GND +VCC 84 U2C NE5523D8 84 U4C LF412CD C27 100nF C24 100nF C25 100nF C19 100nF C21 100nF C20 100nF GND -VCC +VCC 714 U5G HEF4069 C17 100nF C6 10

7、0nF +VCC GND L1 1000uH C39 100nF GND C5 1nF C2 100nF TO-U5-12 2 13 Q2 BC817 R6 1K5 +VCC R229 GND TR50-B D12 6.6VZ MMSZ5235B D14 6.6VZ MMSZ5235B C54 C47 C48 C35 C31 10uF10V C34 0R C38 D22 D23 1 1 2 2 3 3 R227 GND 1 1 2 2 3 3 R236 GNDGND D5 DLED ROSSO R84 VT90N1 C16 10uF10V TERMORETRAIBILE TERMORETRAIBILE TERMORETRAIBILETERMORETRAIBILE TERMORETRAIBILE 21 3 D6 BAV99 21 3 D7 BAV99 21 3 D10 BAV70 21 3 D9 BAV70 21 3 D11 BAV70 21 3 D21 21 3 D15 21 3 D20 RadioFans.CN 收音机爱 好者资料库