Carvin_fs77 电路图 维修原理图.pdf

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1、S2 S3 S4 S1 D7 D5 D1 D2 D3 D4 R12 47K R11 4.7K R9 47K R8 4.7K R6 47K R5 4.7K R3 47K R2 4.7K R13 1KD16 R10 1KD15 R7 1K D14 R4 1KD13 CH 1 CH 2 CH 3 R14 10K R16 1K D17 R15 C2 S5 (active low) (active low) (active low) (active low) 220K R17 10K R19 1K D18 R18 C3 S6 220K R20 10K R22 1K D19 R21 C4 S7 220K

2、0.1 0.1 0.1 REVERB CH 4 MSTR EFF GRAPHIC EQ H8-1 H8-2 H8-3 H8-4 H8-5 H8-6 H8-7 H8-8 H8-9 1 2 Connector V- C1 R1 10F U1 1. ALL CAPACITORS IN MICROFARADS (EXCEPT AS NOTED). 2. ALL DIODES ARE 1N4003 (EXCEPT AS NOTED). NOTES: UNLESS OTHERWISE SPECIFIED 1 3 4 U1 56 U1 98 U1 1256 3498 1312 11 10 U2U2 U2U2

3、 U3 1 2 3 4 U3 U3U3 9856 U3U3 V- V- V- V- V- V- V- D6 D8 D10 D11 D12 D9 LAST USED LIST 13JUN91 30-00177 80-00177 C D R 1-7S SYM 1110 1312 1110 1312 00177 D-9 Footswitch + D20 D21 D22 D23 R23 10K U U1 U1 U2 U2 1 2 13U6 3 4 5 U6 8 9 6 U6 10 11 12U6 N/C N/C N/C N/C 1-23 1-4 1-6 2 3 4 5 1 U4.A 12 11 10

4、9 13 U4.B 2 3 4 5 1 U5.A 12 11 10 9 13 U5.B 4. U1-U6, PIN 7 IS V-, PIN 14 IS GROUND. V- 3. U1-U3 ARE 4584 TYPE SCHMITT TRIGGERS. 5. U4, U5 ARE 4082 TYPE 4-INPUT AND GATES. 6. U6 IS 4066 TYPE. John L. Murphy Quad X-Amp Schematic 84-00177FS-77 Footswitch 1-27 D27 D26 D25 D24 C E J. KENNEDY9JUL92 12340 WORLD TRADE DR. SAN DIEGO, CA 92128 (619) 487-1600 FAX 487-6629 REVISED BY: APPROVED: DRAWN BY: DATE: DATE: ASSY. DATE: ARVIN REV: REV: NO: PCB NO: C 收音机爱好者资料库 Ra d i o Fa n s .CN