Carvin_midi_interface 电路图 维修原理图.pdf

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1、286 375 R21 D1 220 1N914 6N138 NC 28 27 26 25 24 23 22 21 32 33 34 35 36 37 38 39 30 29 17 16 15 14 13 12 11 10 20 18 19 31 40 5 6 7 8 4 3 2 1 9 8 0 C 3 1 R24 C18 + 10K 10f +5VDC C20 +5VDC .01f C16 C17 Y1 27pf 27pf 6MHZ S2 27 19 18 17 16 15 13 12 11 26 20 22 23 28 21 24 25 10 14 2 8 3 4 5 6 7 9 1 2

2、7 C 6 4 19 16 15 12 17 14 13 18 11 9 6 5 2 8 7 4 3 1 7 4 H C 3 7 3 C21 +5VDC D2 C19 + 470/16 1N4733A RDX X2 X1 P1 . 7 P1 . 6 P1 . 5 P1 . 4 P1 . 3 P1 . 2 P1 . 1 P1 . 0 EA/ RST VCC P2 . 7 P2 . 6 P2 . 5 P2 . 4 P2 . 3 P2 . 2 P2 . 1 P2 . 0 P0 . 7 P0 . 6 P0 . 5 P0 . 4 P0 . 3 P0 . 2 P0 . 1 P0 . 0 ALE PSEN/

3、 P3 . 7 P3 . 6 P3 . 5 P3 . 4 P3 . 3 P3 . 2 P3 . 1 P3 . 0 VSS RD/ WR/ T1 T0 INT1/ INT0/ TXD A15 A14 A13 A12 A11 A10 A09 A08 AD7 AD6 AD5 AD4 AD3 AD2 AD1 AD0 ALE PSEN/ 8D 7D 6D 5D 4D 3D 2D 1D 8Q 7Q 6Q 5Q 4Q 3Q 2Q 1Q ENOE A07 A06 A05 A04 A03 A02 A01 A00 A12 A11 A10 A9 A8 A7 A6 A5 A4 A3 A2 A1 A0 VSS V C

4、C V P P PGM/ D7 D6 D5 D4 D3 D2 D1 D0 NC CE/ OE/ .01 +5 AD7 AD6 AD5 AD4 AD3 AD2 AD1 AD0 NC 17JUN92 MIDI INTERFACE J. KENNEDY + 5VDC H10-4 H10-3 H10-2 H10-1 H10-8 H10-7 R23 J. KENNEDY LAST USED LIST 1. ALL CAPACITORS ARE IN MICROFARADS, EXCEPT AS NOTED. NOTES: UNLESS OTHERWISE SPECIFIED. MIDI INTERFAC

5、E 2. ALL GROUNDS ARE B C H J R D2 Y1 +15VDC BINARY ENCODED PATCH MASTER CONNECT 2 OF 2 10,11 21 21-24 S2 SCHEMATIC: 84-00117 R26 220 R25 R22 U 1 270 150 H10-5 H10-6 -15VDC-15VDC GND A GND B JMP14 JMP15 56 U1.C 98 U1.D 1110 U1.E 1312 U1.F +5VDC JMP14,15 MIDI VERSION 30-00107 N/U N/U +5VDC 2 5 4 1 6 3

6、 7 J21 MIDI IN 3 5 2 4 1 J22 +5VDC 3 4 U1.B 12 U1.A MIDI THRU 220 U5 U2 U3 U4 D 80-00107F C23 680pf 3. 3. ADDED AS SECINDARY OPERATION. 4MAR93 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 15-23 收音机爱好者资料库 Ra d i o Fa n s .CN