Carvin_sx300cchan 电路图 维修原理图.pdf

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1、A1.B A3.A A2.B A1.A A3.B B50K B50K B50K R131 R126 R120 R142 R134 R138 P105 P102 P103 HI R136 R137 R135 R145 R124 R121 C129 R149 C130 D107 C124 R139 R140 R141 C125 C123 R144 cw cw cw C122 C121 P104 cw MID !- + !- + !- + !- + !- + + + D108 R128 R130 C114 + R143 C120 + R113 R129 R125 R133 C119 + C118 +

2、 1N914 1N914 A2.A R119 R118 D104 D105 !- + C113 + 1N914 1N914 C115 + D101 C117B + R147 Q104 R123 D102 C116 + 47k C126 + 10k R150 R127 R132 R148 R117 A5.A !- + C172 D1 R192 D3 360K C112A + P1.A cw P1.B cw R174 C16 + D5 R14 R19 R20 R21 R22 R24 R25 C22 + C21 + C20 + R26 C24 C25 + R27 C173 + R176 R177 C

3、19 + 500Hz S101.B S101.A R31 S102.A S102.B R29 C80 + R104 Q29 VOLUME .0068F 0.001F A4.B A6.A A5.B A4.A A6.B 0.1F 0.0033F B50K B50K B50K B50K R220R214R205 R237 R231 R236 LOW P201 P202 P203 MID R234 R235 R233 R242 R212R207 C227 R248 C228 D207 C222 R239 R238 R240 C223 C221 R243 cw cw cw C220 C219 P204

4、cw HI !- + !- + !- + !- + !- + + + D208 R222 R213 C207 + R241 39pF C218 + 330pF 0.01F R201 R223 R225 R226 C216 + C215 + 0.0033 0.1 22F 1N914 1N914 0.01 A8.A R211 R210 D204 D205 !- + C206 + 82PF 1N914 1N914 C211 + 22F D203 1N914 C208 + 0.1F R244 Q201 365k R217 470K D206 1N914 1k 1k 1k C212 + 22F 1k 4

5、7k 68k360k 1k2.2k 47k 33k C224 + 0.1F 1k R249 1M R227 R224 R246 10k R206 47K A7.A !- + 250pF C203 C205 + 0.001F D200 R209 220 D202 10K 150K 10k10k 1K C204 + 1F 1k P200.A cw P200.B cw R204 47 C210 + 82PF D201 R208 1K 22K R218 2.2k R219 470 R221 1k R228 R229 R230 C214 + n/u C217 + 0.047F C213 + 0.1F 3

6、30 3.3K 3.3K 100K 220k R232 100k 47K 560pF C202 C226 + 0.01F R245 4.7K C200 + 0.1F R200 1M R247 10k C225 + 22F 22K 33K 500Hz 1M 3.3K 1M 47K S201.B S201.A R216 220k R215 1M C209 + 180PF S202.A S202.B R202 C201 + 0.1R203 1M Q200 47K N:300 MAIN PRE FX MAIN PRE FX D GND FRONT CH1 FET + A8.B !- + R405 33

7、K FX RET RTN 1L B50K P401 R407 22K C413 + 0.0022 R406 22K C412 + 0.0022 CH1 FET - CH2 FET - N:62 0.0033F smtX A9.B A9.A C303 C304 R315 R313 R314 C309 R312 R316 C310 C308 R319 R310 R311 C307 R309 C306 R318 R317 R308R307 P304 cw P303 cw P302 cw P300 cw !- + !- + R305 R304 C305 + C311 + 1000F R300 C2 +

8、 C313 + +15VDC C405 -15VDC C403 C404 A15.A C400 2!- 3 + 1 MASTER H1A.H H1A.G H1A.A H1A.C H1A.B H1A.E H1A.D +15VDC -15VDC 35V 35V R403 R404 C402 CH3 FET - C300 R301 + Q300 R302 -15VDC +15VDC C406 C407 H5A.A H5A.B H1A.F R306 R401 H5A.C H5A.D R400 C312 + R321 R303 12340 World Trade Drive San Diego, CA

9、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 500Hz A15.B 6 5 +7 C401 R402 FX RET FX SEND +15VDC N:300 MAIN PRE FX S300.A S300.B A10.B !- + C8 + R6 C9 + R7 0.047F 39pF 1K R9 R8 R11 R10 R13 R12 C605 C606 5.6K 10K 220K

10、 1.5K 10K C7 +15VDC INPUT QF1 R1 C302 + R3 10K QF2 C1 + C3 + n/u C4 R2 R4 R5 1M H5B.A H5B.B H5B.C H5B.D +15VDC INPUT C171 + C190 + R190 0.1F 1M 330 47k 1M 0.1F 560pF 250pF 47 1F 0.001F 1k 220 1k 360k 39pF 47k 470k 1k 82pF 22F 22F 1K 2.2k 470 1k0.1F 22k 68k 1k 82pF 1k2.2k 10k 0.01F 0.0068F 0 47k 47k

11、150k 0.0033F 220k 0.047F 33k 22k n/u0.1F 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 22F 0.01F 4.7k 22k 10k10k 22F 47k 1M 0.1F 6.8k 47k 0.1F 1M 15k 22F 82pF A7.B !- + 1M 470k 1F 10 470k n/u n/u n/u 0 0 0.1F 22F 22F 15k 39pF 22k 33k 120pF 22F 220 0.0

12、033F 1M 1M 1K2.2K 47k47k 0.01F 0 0.0033F 1k1k 0.001F 0.0068F 3.3k 0.01F 10k10k 1k 1K1K 0.1F 0.1F 47k R320 22k J1 INPUT H41A.B H41A.C H41A.G A10.A !- + FX SEND H41A.D H41A.E R471 22k R470 6.8k C470 39pF D GND FRONT 0.068F 5457 5457 R36 10k R37 10K VOLUME DRIVE DRIVE HI MID LOW C10 +1F +5V SX 300 Combo/Head PRE-AMP SECTION 30- 03300 80- 03300 B A 9JAN03 1F 收音机爱好者资料库 Ra d i o Fa n s .CN