Astatic-Echomax2000-mic-sch 电路图 维修手册.pdf

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1、 CLOSED = OFF 3 2 1 DIGITAL DELAY BL YL RD GND WH BK CROWBAR + ETS ON/OFF ETS SINGLE/MULTI MIC GAIN EFFECTS GAIN POWER/ BATTERY FOR 20 dB ATTENUATION OF OUTPUT CUT 1 TO 2 AND JUMP 2 TO 3 D4D3D0 D5D2D1 D6D1D2 D7D0D3 D4D0D0 C2D5D1D1 C1D6D2D2 C0D7D3D3 D4D4 D5D5 D6D6 D7D7 D0 D1 C0D2 SMPL*C1D3 C2D4 D5 D6

2、P1 D7P2 P2 P1 A 1 B 2 C 3 G1 6 G2A 4 G2B 5 Y0 15 Y1 14 Y2 13 Y3 12 Y4 11 Y5 10 Y6 9 Y7 7 21 21 21 21 21 2 1 3 4 6 7 9 10 12 5 8 11 2 1 3 4 6 7 9 10 12 5 8 11 1 2 P24 1 P25 2 P26 3 P27 4 VCC 5 XT2 6 XT1 7 P31 8 P32 9 P33 10 P00 11 P01 12 P02 13 GND 14 P20 15 P21 16 P22 17 P23 18 5 6 7 10 9 8 3 2 1 41

3、1 3 2 1 411 10 9 8 14 1213 11 6 15 21 10 4 53 9 2121 21 21 VOUT 1 SENSE 2 SHUTDOWN 3 GND 4 ERROR* 5 5V 6 FB 7 VIN 8 D1 3 Q1 2 D2 4 Q2 5 D3 7 Q3 6 D4 8 Q4 9 D5 13 Q5 12 D6 14 Q6 15 D7 17 Q7 16 D8 18 Q8 19 CLK 11 CLR 1 D1 3 Q1 2 D2 4 Q2 5 D3 7 Q3 6 D4 8 Q4 9 D5 13 Q5 12 D6 14 Q6 15 D7 17 Q7 16 D8 18 Q

4、8 19 CLK 11 CLR 1 A0 10 A1 9 A2 8 A3 7 A4 6 A5 5 A6 4 A7 3 A8 25 A9 24 A10 21 A11 23 A12 2 CS1 20 CS2 26 WE 27 OE 22 D0 11 D1 12 D2 13 D3 15 D4 16 D5 17 D6 18 D7 19 1 2 3 4 5 6 1 21 2121 5 6 7 21 1 2 3 4 5 6 7 8 9 10 21 21 21 12 13 14 12 13 14 21 212121 21 21 21 1 2 3 Title SizeDocument NumberRev Da

5、te:Sheetof U1 74HC138 C1 100pF R1 4.7K R2 4.7K D11N4148 D21N4148 D3 1N4148 D4 1N4148 D51N4148 SW1 SW 4PDT SW2 SW 4PDT BT1 BATTERY JP1 CART C2 10 pF X1 12MHz C3 18pF C4 18pF U2 Z86E08 U3B TL064 + - U3C TL064 + - U3A TL064 + - U4A TL064 + - U4C TL064 + - J1 R4 15C10K R6 1K R7 2.21K R9 30.1K R10 5.23K

6、C6 0.0027uF C7 0.0027uF R11100K C8 100uF 16V + C9 0.22uF R12 3.40K R13 9.76K C10 0.033uF C11 0.022uF R14 43.2K R15 13.7K C12 100pF U5A 4053B R16 3.32K R17 3.32K R18 10KB U5B 4053B R20 18.7K C13 0.1uF U5C 4053B C14 100pF R22 10 R23 10 D6 1N4148 D7 1N4148 R24 4.99K R25 4.99K R26 10 C15 220uF ELECT + Q

7、1 2N3904 Q2 2N3906 C16 0.1uF Q3 2N3904 D8 1N4148 D9 1N4148 R27 1K Q4 2N3904 R28 10K M1 METER VU VU R29 500K R30 1.5K C17 0.1uF R31 100K R32 100K R33 1M C18 220uF ELECT + R35 100 C19 4.7uF ELECT + R36 3.9K K1 RELAY DPDT K2 RELAY SPDT U6 LP2951 R37 100K R38 100K C22 0.1uF C23 0.1uF U7 74HC273 U8 74HC2

8、73 C24 0.001uF R39 100K U9 6264 JP2 RJ-12 JP3 HEADER 1 R40 3.9K R41 3.9K D10 1N4148 R43 88.7K Q6 2N3906D11 1N4148 D12 1N4148 R44 150K C25100pF R46 100K U4B TL064 + - R4710.0K C26 0.022uF R4810.0K R49 40.2K C27 0.0033uF R50 75.0K R51 95.3K C28 100pF R52 4.64K C29 0.068uF R53 13.7K R54 11.0K C30 100pF

9、 R55 3.9K C31 0.1uF Q7 2N3906 R56 62 D14 1N4148 C32 0.1uF R58 R2R R59 3.57K R60 3.9K Q8 2N3904 Q9 2N3904 R61 10K D16 1N4148 R62 1K C33 10uF + D18 1N4148 R63 3.9K R64 160 D19 1N4148 Q10 2N3904 R65 3.9K R66 3.9K Q11 2N3904 SW3 SW DPST SW4 SW DPST R68 10K R69 47K R70 33 R71 POT C35 1uF + C36 1uF + U3D

10、TL064 + - U4D TL064 + - D13 LED Q5 2N3904 R42 33 R67 1K C34 1uF + D20 1N4148 D21 1N4148 D22 1N4148 D15 1N4148 R8 10.0K C5 0.1 uF R21 7.50K R19 10.0K D17 1N4148 C21 4.7uF TANT + R34 500 POT R45 160 R5 100 R34.75K D23 1N4148 R57 5KA R72 4.7K SP1 SPLASH PAD R73 499 C20 22uF 16V ELECT + VCC/2 VCC/2 VCC/

11、2 VCC/2 VCC VCC/2 VCC VCC VCC/2 VCC V9 VCC VCC V9 V9 VCCVDD VCC/2 VCC VCC/2 V9 V9 V9 V9 V9 VCC VCC VCC VCC GND GND GNDGND GND GND GNDGND GND GND GND GND GNDVSSVEE GND GND GND GND GND GND GNDGND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND VCC VCC 8 8 7 7 6 6 5 5 4 4 3 3 2 2 1 1 DD CC BB AA 43900-00-00 ECHOMAX 2000 ASTATIC C 11Wednesday, May 14, 2003 RadioFans.CN 收音机爱 好者资料库