Sequential Circuits Prophet-5 Service Manual - Audiofanzine

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11 *SECTION 1SERVICEIl-OINTRODUCTIONThis section contains instructions for converting Rev 3.0 or 3.1Prophets to Rev 3,2. Italso presents procedure for Rev 3.0, 3.1, and 3.2 diagnostic computer tests. Finally,there is a trim procedure for the added WHEEL-MOD VGA in Rev 3.2.11-1 REVISION 3.2 RETROFIT KIT INSTRUCTIONSRevision 3.2 Retrofit kitskit includes:can be ordered through the Service Dept. as Model S63- TheQUANTITY31211SCI P/NM-031M-362R-0^6Z-803Z-80^DESCRIPTIONlockwasherDIGITAL/ANALOG Label5.1 ohmAssembled and Tested PCB 3Assembled and Tested Wire HarnessBack Panel Modification1. Open the Rev 3.0 or 3.1 Prophet as shown in Section 1. Disconnect Power Supplyconnector P302 and the Audio Cable P^02. Set the entire top section aside.2. Remove PCB 5 Power Supply Board and regulators from back panel. PCB 5 will laterbe modified.3. Mark and centerpunch the back panel according to Fig. 11-0.^. Drill (2) y
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PROPHET-5 SYNTHESIZERTECHNICAL MANU
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iJTable of ContentsISECTION 1MECHAN
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'1SECTION 1MECHANICAL1-0 GENERALThi
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Raise the top panel assembly to ser
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1-5 PCB 1/2 CONTROL PANELSOnce PCB
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Figure 1-5KEYBOARD REMOVAL1 -7/1 -8
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TOADDITIONALVCOsTOADDITIONALENV GEN
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2-2 THE PROPHETThe Prophet is a sub
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COMMON ANALOGVOICE(VOiCES e-5 ARE S
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'IAll processed CVs originate from
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ajMim—2-8 AUDIO OUTPUTAs shown in
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.'2-10 MICROPROCESSOR, MEMORY, AND
Page 27 and 28:
For troubleshooting, it should be e
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2-12 ADC, DAC, AND CV OUTPUTSThe DA
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iirH- - jMg 1— -^ 'iVMUX, U201-3^
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the same CV and trigger pattern to
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SECTION 3DOCUMENTS3-0 DOCUMENT LIST
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TOP PANEL ASSEMBLY1CHASSiSLAST \NOT
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TB/0i/20f 32 22 30 20 19 25 233 2 I
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Inpreparation for service, set up t
Page 60 and 61: 4-2 OSCILLATOR B TESTSTEP MODULE CO
Page 62 and 63: 4-S FILTER TEST.STEP'MODULE CONTROL
Page 64 and 65: 4-8 POLY-MOD TEST—A.STEP MODULE C
Page 66 and 67: i4-11 PITCH WHEEL TRIMThis trim rem
Page 68 and 69: A)I4-16 VCO SCALE TRIMBE SURE RECOR
Page 70 and 71: 4-19 FILTER ENVELOPE AMOUNT VCA BAL
Page 72 and 73: 4-21 FINAL VGA BAL1. Switch PRESET
Page 74 and 75: 115-3 PCB 3BT301 E-040L-\:!Oi 0-U45
Page 76 and 77: I ]U374U375U376U377U37SU379U380U381
Page 78 and 79: 1R419SR4199R4200R4201R4202R4203R420
Page 80 and 81: 51» IR44S7/488 R-025R44S9 R-009R44
Page 82 and 83: kL096 E-066098 E-071100 E-078102 E-
Page 84 and 85: IJ310 M-156312 M-157314 M-158316 M-
Page 86 and 87: JJ51S R-161520 R--162522 R-163524 R
Page 88 and 89: FFFFDBKFETFFFILTFINFINEFOAFREQFSKFT
Page 90 and 91: 11 IJSECTION 8THEORY8-0 INTRODUCTIO
Page 92 and 93: 1 1for the 2 to 5-foot range. The c
Page 94 and 95: IiSECTION 9PRCX^RAMMING9-0 INTRODUC
Page 96 and 97: I3JIJThe Prophet will not accept st
Page 98 and 99: ByteByte 23Switch Bit (7)OSC A PULS
Page 100 and 101: t J IISECTION 10REVISION 3.1 and 3.
Page 102 and 103: I+ I5V+5dI^1-+5V 2'2pF+I6V+5V^^' U3
Page 104 and 105: T&=* PANEL ASSE^^mtYSAfKEYBOARD,'r-
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Page 108 and 109: 4/J«-5[E> -TUNER57a12wzofwiOi^^^^^
Page 112 and 113: ^ 1 1 ;4 PINFigure II-OFigure11-TM1
Page 114 and 115: I 111-2 REVISION 3.0 MEMORY TESTRev
Page 116 and 117: Tr1 1-5 WHEEL BALANCE TRIM1. See pa
Page 118 and 119: SECTION 13PROPHET-5 REV 3.3 UPDATET
Page 120 and 121: iFigure 13-1PCB 3 TOP MODIFICATIONT
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Page 124 and 125: i/*5-tft/jj4-y,6-C90H202 >7-CS0H5Q3
Page 126 and 127: '^'K'..v''
Page 128 and 129: tV t IEPROM1000.3.0V.8.0V.8.1V.8.21
Page 130 and 131: IJmemory interface1000.3.01000.3.11
Page 132 and 133: ittKRAM, non-volatile (NV)1000.3.01
Page 134: 1voltage-current convertervoice ass
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Sequential Circuits Prophet-5 Service Manual - Audiofanzine

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