Carvin_sx300r_1 电路图 维修原理图.pdf

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1、C101 P101.A cw P101.B cw R100 C100 560pF 250pF 47 DRIVE H1B.A H1B.B 250pF C201 P200.A cw P200.B cw R200 47 560pF C200 DRIVE H2B.A H2B.B C301 P300 cw R300 C300 + 15k 22F 82pF A3.A !- + H3B.A H3B.B CLEAN A1.A A1.B B50K B50K B50K R110 R101 R106 P105 P102 P103 HI R104 R105 R103 R112 C108 R107 R108 R109

2、C106 C105 R113 cw cw cw C104 C103 P104 cw MID !- + !- + R111 C102 + C107 + 10k R102 33k 100k 330pF LOW 3.3k3.3k 0.0068F 3.3k 10k 0.0033F 0.001F 1k 0.01F 1k1k 0.1F 0.1F 100k 1M 1M VOLUME H1B.C H1B.D VOLUME .0068F 0.001F A2.A A2.B 0.1F 0.0033F B50K B50K B50K B50K R207 R201 R206 LOW P201 P202 P203 MID

3、R204 R205 R203 R212 C208 R209 R208 R210 C206 C205 R213 cw cw cw C204 C203 P204 cw HI !- + !- + R211 C202 + 330pF 0.01F 33k C207 + 0.1F 1k 10k 10k 1K 1k 3.3K 3.3K 100K R202 100k 1M 3.3K 1M H2B.C H2B.D 0.0033F smtX A3.B R308 R306 R307 C307 R305 R309 C305 C304 R312 R303 R304C303 R302 C302 R311 R310 P30

4、4 cw P303 cw P302 cw !- + C306 + 1M 1M 1k1k 0.001F 0.0068F 3.3k 0.01F 10k10k 1k 1K1K 0.1F 0.1F 47k HI MID LOW H3B.C H3B.D #107#109#110#111#112#113 #106#101#100#103#105#104#102 Front card H6A.D H6A.C H6A.A H6A.B D GND FRONT R552 33K DSP LEVEL B50K P500 P502 cw P501 cw ADJUST 1 SELECT 1 R551 R550 C550

5、 0.1u C551 0.1F C552 0.1F 1K 680 D GND FRONT D GND FRONT D GND FRONT H5A.D H5A.C H5A.A H5A.B SELECT ADJUST ADJUST SELECT C401 C402 H4B.A H4B.B H4B.C H4B.D +15VDC F -15VDC F R400 R401 C400 0 0 0.1F 0.1F 0.1F 12340 World Trade Drive San Diego, CA 92128 (858) 487-1600 FAX 487-6629 REVISED BY: APPROVED: DRAWN BY: DATE: DATE: ASSY. DATE: ARVIN REV: REV: NO: PCB NO: C A.J.Ashley 30- 03301 80- 03301 30AUG02 SX 300R RACK PRE-AMP #170#171#172#173#174#175#177#178#179 PAGE 1 of 5 B A 收音机爱好者资料库 Ra d i o Fa n s .CN