Hammond Organ B3 C3 Service Manual
Hammond B-3 Service Manual hammond_organ_b3-c3_service_manual Hammond - B-3 - Service Manual
Hammond C-3 Service Manual hammond_organ_b3-c3_service_manual Hammond - C-3 - Service Manual
Hammond C-3 Service Manual hammond_organ_b3-c3_service_manual Hammond - C-3 - Service Manual
Hammond B-3 Service Manual hammond_organ_b3-c3_service_manual Hammond - B-3 - Service Manual
User Manual: Hammond Organ B3-C3 Service Manual
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A TO PERCUSSION SWITCH K J T4 +1.7V B PERCUSSION CHANNEL INPUT H VIBRATO CHANNEL INPUT R3 270K R6 47K 22 R50 47K R47 470K R48 4.7K C29 25/25 C30 100PF 6 .047 R19 470K +205 T5 C12 .0047 R18 10M R10 3.9M C6 30PF 3 100 R25 +290 R24 22K 95V R22 820 1 47K R52 * 25V 6 V6 6C4 R54 * 47K 1 R53 * 47K 2 12AU7A V7A R55 82K 7 8 22K R56 +33 R62 220K R63 390K C21 .001 R33 68K R34 15M 60PF/SEC "GY" 60 HZ 117VAC "BL" 1.5M R57 R58 4.7M R61 39K P 8 T7 M L N R60 30K PERCUSSION CUTOFF TO PERCUSSSION SWITCH +33 SELECT FOR CHANNEL BALANCE (MOUNTED ON "P" TERMINAL) T1 GY BL BN V8 6X4 3 7 4 82PF C24 G G F V8 E C56 40/450 900 R91 F C56 C57 C58 375V TO HTRS R38 390K 330K R39 R37 270K E TO "VOLUME" TABLET R52,R53,R54,C32 IN AO-28-1 AMPLIFIERS (WITH NO CODE LETTER ONLY) NOTE: 6 1 .033 C23 R36 330K +280 12AX7A 6 V4B 140V C22 24-90PF +1.7V (V2) R35 3.3M 7 THESE COMPONENTS GO BETWEEN POINTS "P" AND "D" IN AO-28-1 AMPLIFIERS (WITH NO CODE LETTER ONLY) INSTEAD OF THOSE SHOWN AT LEFT C33 .0022 C34 .001 C35 390PF C19 .0022 R31 68K 1.8M R32 C17 680PF EXPRESSION CONTROL RADIO-PHONO C20 220PF T6 R62 100K C33 .0033 R63 390K 1.8M R30 C18 220PF +205 1 V7B 6 12AU7A +37 3 C32 390PF .001 C34 150PF C35 C D * C32 .0082 C13 1.0 R29 330K C16 .033 +280 OUTPUT TO VIBRATO LINE INPUT FROM VIBRATO SCANNER C31 .33 7 3 145V 12AX7A 1 V4A +1.7 (V2) R27 1.8M 2 C15 51PF (* SEE NOTE) 22K R23 1M R21 2 12BH7A V3A C11 .0047 +280 R8 470K V5 6C4 R49 2.2K 7 1 R20 2.2M C10 .33 62 5 C5 .01 R9 820K 130V +280 2.2M R7 5 6AU6A V2 62 C28 1 R17 1.2K 7 100PF C8 R51 C9 .33 C4 R15 2.7M C7 24PF 7 1 V1 6AU6A 100PF C3 C2 39PF 30/25 270K R12 47K R16 10M R14 4.7M R13 +1.7 (V2) INPUT FROM MATCHING XFMRS THRU VIBRATO TABLETS NON-VIB CHANNEL INPUT R5 10M R4 1.8M C57 4.7K R95 D CONTROL EXPRESSION A B V1 L N V2 K V6 M J V5 R100 2.7K H V7 T5 T6 T4 +33 +37 +205 REV 1.0 1 TO TONE CABINET R101 2.7K R99 180 MODEL B3, C3, RT3 V4 C9,C26 C59,C60 C56 10/350 +280 C60 50/300 R98 7500 G BN G PREAMPLIFIER TYPE AO-28 Size Document Number B --- --- --Date: April 20, 1995 Sheet 1 of Title SIDE VIEW P 4.7K R96 4500 R97 T3 +290 C26 30/25 V3B 12BH7A C58 30/350 +290 TOP VIEW V3 12V 6 1200 R42 8 4.7K R94 40/400 T3 C 7 335V C25 .001 R41 100K R40 .3M TONE VIBRATO GREAT T1 MATCHING TRANSFORMER (LOWER AND PEDAL) TYPICAL GROUP OF LOWER (GREAT) MANUAL DRAWBARS PEDAL DRAWBARS TYPICAL GROUP OF UPPER (SWELL) MANUAL DRAWBARS OFF SOFT C2 R4 T2 MATCHING TRANSFORMER UPPER 820K 39PF OFF R10 3.9M R5 ON R2 1M A 1 100PF R3 270K 3 62 +1.7V (FROM V2) R7 B 2 3 8 7 6 5 4 3 2 1 0 470K C8 .0001 UPPER MANUAL BUSBARS 12V R41 100K 1200 R33 68K C19 .0022 6 C12 C26 30/25 R42 C21 .001 V3B 12BH7 7 .0047 C13 8 100V R21 1M 7 C9 30/25 R19 470K 60V 3 D 1.0 R22 820 R20 2.2M C10 .33 6 PERCUSSION SIGNAL 95V R24 22K R23 22K +280V C VIBRATO SWITCH +1.7V (TO V1,V4) 5 +280V +290V C25 .001 R25 62 R17 1.2K G 8 +1.7V (FROM V2) 100 V2 6AU6 130V 1 5 R16 BN 7 .0047 R15 2.7M G T3 8 1.8M R31 68K R40 300K 24PF 10M LOWER MANUAL PRESET PANEL R38 390K R36 R35 3.3M +1.7V (FROM V2) C11 R14 R12 270K R34 15M R32 R30 1.8M 285V V3B 6 12BH7A TONE 330K 7 +290V UPPER MANUAL PRESET PANEL R39 12AX7A 6 V4B 330K R27 1.8M +280V R37 270K 140V C20 220PF V4A 12AX7 C7 R13 4.7M LOWER MANUAL BUSBARS C18 220PF 1 270K 2.2M C4 .33 C23 .033 60PF/SEC R28 82PF EXPRESSION CONTROL C16 .033 C15 51PF 60V 2 30PF F C24 C22 C8 130V R8 470K 5 E 24-90PF RADIO-PHONO 330K 5 C3 7 6 2 +280V C5 .01 V1 6AU6 R6 47K R1 3.9M C17 680PF R29 145V 10M C1 470PF NORMAL R10 - SELECT AT TEST TO BALANCE CHANNELS 1.8M VIBRATO SWELL VOLUME R9 ON (GEN 49-91) CLOSED IN V1,V2,V3 91 CLOSED IN V1/C1 CLOSED IN V2/C2 CLOSED IN V3/C3 C35 150PF C34 R44 SCANNER 22K .001 R48 T4 1 H PERCUSSION 470K C28 .047 1 47K (GEN 44-48) T5 R47 OFF 4 ON THIRD 200V V7A 12AU7 V5 6C4 3 100PF 7 .33 R61 33K 8 85V 7 C30 R49 2.2K V7B 12AU7 25/25 J 4.7M 22 K GENERATOR OUTPUT TERMINALS R51 6 PERCUSSION VOLUME SOFT R46 12K 5 4 L1 7 6 L4 8 L5 9 L2 L3 L6 R67 56K R69 R71 R73 R75 39K 33K 18K 12K PERC. DECAY M 7 4.7K 3 R65 27K 1.5M 25V 1 2 R60 30K L R57 V6 6C4 1 200V PERCUSSION CUTOFF R50 (GEN 1-43) +33V 6 R58 1 T6 +205 C31 7 SECOND 390PF 2 C29 44 C33 .0033 +37V +205 6 R62 100K 1 R63 390K C32 R55 82K SLOW R56 22K FAST R66 C37 R68 C38 R70 C39 R72 C40 R74 C41 R76 68K .004 150K .004 150K .004 180K .004 180K .004 180K R59 120K 10 L7 L8 11 L9 12 13 L10 14 L11 15 L12 L13 17 16 L14 L15 L16 L17 18 L18 C42 C43 C44 C45 C46 C47 C48 C49 C50 C51 C52 C53 C54 .004 .004 .004 .004 .004 .004 .004 .004 .004 .004 .004 .004 .001 R77 15K +33V NORMAL VIBRATO DELAY LINE NOTES: TONE GENERATOR R81 10 R84 5 +205V 4500 ON R80 10 R82 47 R85 L20 BL T7 START SWITCH R83 470 R86 6.0V HEATERS R87 2 +290V 250 (1000) 1 4 6 3 7 900 R91 GY SYNCHRONOUS MOTOR V8 6X4 340VRMS PINS 1,6 TO GND NINE CONTACTS UNDER TYPICAL PLAYING KEY. C56 C57 C58 T4 T1 4 R96 T6 CONTROL V8 R95 +33V TOP VIEW EXPRESSION NINE CONTACTS AND CONNECTIONS UNDER "B" ADJUST KEY. 180 T5 C9,C26 C59,C60 T3 V3 V4 V1 V2 V6 V7 V5 PRESET PERCUSSION SWITCH UNDER "B" ADJUST KEY ONLY. 4.7K 4.7K STARTING MOTOR 3 R99 +280V 375V NINE CONTACTS AND CONNECTIONS UNDER "A#" ADJUST KEY ARE SAME AS "B" EXCEPT THAT THESE THREE DRAWBAR WIRES GO DIRECTLY TO KEY CONTACTS. +37V 4.7K 117VAC 50/60HZ HEATER (IF USED) BUSBARS R98 7500 R94 20 R88 600 PEDAL SWITCH C60 50/300 5 8 CONTACTS UNDER TYPICAL PEDAL KEY TO GENERATOR TERMINALS (SEE PEDAL WIRING CHART) 1 R97 335V OFF RUN SWITCH C56 40/450 C57 40/400 C58 30/350 C56 10/350 R100 2.7K R101 2.7K 5 NINE CONTACTS AND CONNECTIONS UNDER TYPICAL PRESET KEY. 6 TO GENERATOR TERMINALS (SEE MANUAL WIRING CHART) 7 R61 SELECTED AT TEST TO BALANCE THE CHANNELS. Title B3/C3 SCHEMATIC Size E Date: Document Number REV --- ---- --December 11, 1995 1.0 Sheet 1 of 1 GY VI BL GN YL OR RD BN BK GY VI BL GN YL OR RD BN BK A W G H Y V I B L G N Y L O R R D B N W G H Y V I B L G N Y L O R R D B N R D B N W G H Y V I B L Y L O R R D B N W G H Y V I B L G Y Y L O R R D G# G F# F E D# D C# A B N G# G F# F E D# D C# GY GY VI VI BL BL GN GN YL YL OR OR RD RD RESISTOR PANEL AND PEDAL FILTER ON BACK OF MANUAL ASSEMBLY RUN SWITCH G N RESISTOR PANEL R83 START SWITCH W H PEDAL FILTER G N Y L BN BN BK BK BK R82 1 O F F O N OFF R80 ON R86 R85 R84 R81 L20 BK BN YL BN BK YL BL BK OR BK BN RD LINE PANEL MATCHING XFMR T1 (LOWER MANUAL) VI WH R87 T2 (UPPER MANUAL) WH GY LOWER MANUAL Y L BK (BL) B N 91 VI 13 GN BL RD RD WH YL YL SYNC MOTOR GY OR RD BN BN GN STARTING MOTOR WH BL BK GY RD OR BK BL C1 PRESET SWITCH R1 BK YL GN BK UPPER MANUAL VIBRATO SCANNER BK R2 BK 8437616593872154427614583862954327612584376175938721644276155838721543276135838628543276114 520868 40531319708646 283191 7586424 0631979 51642420819757 39420208697535 172080 6475313 9 YL BL BN YL TONE GENERATOR WH YL GN GN GN RD RD R46 R59 BL BK WH YO LR R B 68 DN FREQUENCY NUMBERS IN CONSECUTIVE ORDER 1 PEDAL SWITCH YL GN PERCUSSION SWITCH (REAR VIEW, COVER REMOVED) VIBRATO SWITCH TERMINALS ON DRAWBAR BASE SCANNER TERMINAL NUMBERS COLOR CODE 8765 432 8765 432 8765 432 GN YL YL BK BN RD OR YL GN BL VI GY WH B R44 1111 8765 BL 196 2 1111 5431 975 1 19 8 10 765 RD YL GN GN VIBRATO LINE TERMINAL NUMBERS JACK TO TONE CABINET BN AC LINE CONTROL PANEL BLACK BROWN RED ORANGE YELLOW GREEN BLUE VIOLET GREY WHITE BARE (REAR VIEW, COVER REMOVED) GY BL BN G BL G F E Y L C GN GY BK RD OUTLET BOX G Y B L B N B K R D G N Y L B N BK Y L B L R D B N G N GN YL 1 P D A B L N K M J 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 H PREAMP VIBRATO LINE BOX Title WIRING DIAGRAM - HAMMOND B3 OR C3 BN Size Document Number REV E Date: B December 12, 1995 Sheet 1 of 1
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