Mackie CFX20 MKII Service Manual Download Page 45

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A-2

Components noted with this symbol shall be replaced only by the

component specifi ed. This is required to maintain product safety.

CFX•16

15 SEPTEMBER 2002

070-121-XX REV A40 BOMSHELL CFX16

PART #

REV

DESCRIPTION

QTY

NOTES

070-121-XX

A40

BOMSHELL CFX16

SEE BELOW

080-142-00

TRANSFORMER ASSEMBLY -010 120V

SEE PAGE 12

510-001-00

FUSE SB 1A 5X20MM 250V UL

640-001-00

LC IEC SJT 10A/125V 6FT

LINECORD

820-104-00

C00

OWNERS MANUAL

090-121-00 REV A3 CFX16 FINAL ASSEMBLY

PART #

REV

DESCRIPTION

QTY

NOTES

040-358-00

RIBBON CABLE 18G 7P .156 16IN

055-192-00-01

C11

EFFECTS PCB ASSEMBLY

SEE PAGE 4

055-241-00-03

C05

MASTER PCB ASSEMBLY

SEE PAGE 5

055-242-00-02

C05

SLAVE PCB ASSEMBLY 4

SEE PAGE 9

055-258-00-02

A11

POWER SUPPLY PCB ASSEMBLY

SEE PAGE 11

055-260-00-02

B00

AC INPUT PCB ASSEMBLY

SEE PAGE 12

080-144-00

BNC ASSEMBLY

SEE PAGE 12

400-365-00

QDISK TAB .250 M #6 MNT

410-005-00

INSL SILPAD TO-220

550-443-00

SCR CHASSIS TOP CXF 16

550-446-00

CHASSIS BOTTOM CXF 16

550-462-00

CLAMP TO-220 X 4

550-491-00

FAB PLT HTSK CFX PWR SPLY

550-551-10

PNT LEFT SIDE CFX

550-551-20

PNT RIGHT SIDE CFX

550-553-00

SCR BACK CFX-16

620-045-00

CBL FLT 14C W/PINS 3.5IN

700-010-00

TF 6-32X1/4 PHP BLKZC

700-011-00

MCH 4-40X1/4 BTNSKT BLKOX

700-028-01

SEMS 6-32X5/16 PHP BLKZC

700-028-03

SEMS 6-32X1/2 PHP BLKZC

701-016-00

5-20X5/16 PHPII TYP B BLK

705-001-00

KEPNUT 6-32

0000223

NUT, HEX, THREADED, 1/4”

705-008-00

NUT LOCK 8-32

0000222

WASHER

750-001-00

BUMPON ROUND BLK .63X.31

760-037-01

C00

KNOB SLIDE 10X25MM MLDLIN

Summary of Contents for CFX20 MKII

Page 1: ......

Page 2: ......

Page 3: ...ckie Designs Inc All rights reserved MASTER 241 SLAVE 242 POWER 258 AC POWER 260 EFFECTS 192 Click on any box Click on any box CFX SCHEMATICS mit PCB PARTS LIST ALL BOARDS NOTE The CFX 12 has one Slave board the CFX 16 has two the CFX 20 has three ...

Page 18: ...ved MASTER BOARD 241 REV A 241 13 Top of Board if this has been printed double sided and has been lined up cor rectly you can shine a light through this page and see the bottom of the board s traces and pads Sometimes this works some times not ...

Page 20: ...O O U 15 O O U 15 O O 1 2 EFX 2 INT EFX 1 EXT PRE FADER AUX U 15 O O U 15 O O U 15 O O U 15 O O 1 2 EFX 2 INT EFX 1 EXT PRE FADER AUX U 15 O O U 15 O O U 15 O O U 15 O O 1 2 EFX 2 INT EFX 1 EXT PRE FADER AUX U 15 O O U 15 O O U 15 O O U 15 O O 1 2 EFX 2 INT EFX 1 EXT PRE FADER AUX U 15 O O U 15 O O U 15 O O U 15 O O 1 2 EFX 2 INT EFX 1 EXT PRE FADER AUX U 15 O O U 15 O O U 15 O O U 15 O O 1 2 EFX ...

Page 25: ...100 12k HI MID FREQ 80Hz LOW EQ U 15 15 U 15 15 U 15 15 ASSIGN L R PAN L R PAN L R PAN L R PAN 3 4 1 2 MUTE 3 4 1 2 MUTE 3 4 1 2 MUTE dB 30 20 10 O O 40 50 5 5 U 60 10 SOLO PFL dB 30 20 10 O O 40 50 5 5 U 60 10 SOLO PFL dB 30 20 10 O O 40 50 5 5 U 60 10 SOLO PFL dB 30 20 10 O O 40 50 5 5 U 60 10 SOLO PFL 1 EFX 2 INT EFX 1 EXT PRE FADER AUX U 15 O O U 15 O O U 15 O O U 15 O O 1 2 EFX 2 INT EFX 1 EX...

Page 29: ... REV DESCRIPTION PAGE 090 120 00 A3 CFX12 2 070 120 XX A40 BOMSHELL CFX12 2 055 192 00 01 C11 EFFECTS PCB ASSEMBLY 4 055 241 00 03 C05 MASTER PCB ASSEMBLY 5 055 242 00 02 C05 SLAVE PCB ASSEMBLY 9 055 258 00 01 A10 POWER SUPPLY PCB ASSEMBLY 11 055 260 00 02 B00 AC INPUT PCB ASSEMBLY 12 080 144 00 D BNC ASSEMBLY 12 080 142 00 B TRANSFORMER ASSY 010 120V 12 ...

Page 30: ...02 B00 AC INPUT ASSEMBLY 1 SEE PAGE 12 080 144 00 D BNC ASSEMBLY 1 SEE PAGE 12 400 365 00 A QDISK TAB 250 M 6 MNT 1 410 005 00 A INSL SILPAD TO 220 4 550 442 00 B1 SILKSCREENED CHASSIS TOP CXF 12 1 550 445 00 A1 CHASSIS BOTTOM CXF 12 1 550 462 00 A1 CLAMP TO 220 X 4 1 550 491 00 A1 FAB PLT HTSK CFX PWR SPLY 1 550 551 10 A1 PAINTED LEFT SIDE CFX 1 550 551 20 A1 PAINTED RIGHT SIDE CFX 1 550 552 00 B...

Page 31: ... GRY 17 760 048 02 B KNOB 9MM MAGENTA 44 760 048 03 B KNOB 9MM BLU GRY 34 760 048 04 B KNOB 9MM DARK GRAY 18 760 091 00 A KNOB MASTER VOLUME 1 780 050 00 A LIPSEAL MASTER CFX 1 780 051 00 A LIPSEAL SLAVE 4 CFX 1 790 002 00 A BAG POLY 12 X 18 2MIL 1 790 027 00 A BAG POLY 20X7X36 4MIL GUS 1 800 130 00 B BOX CMPT CFX 12 1 810 083 00 A FOAM FRONT CMPT CFX 1 810 084 00 A FOAM REAR CMPT CFX 1 Bomshell C...

Page 32: ...5OV NPO SM 13 212 023 00 B1 CER 001UF 10 50V NPO SM 3 212 024 00 A1 CER 1UF 25V Y5V 1206 4 212 027 00 A1 CER 1UF 16V 10 X7R 0603 15 212 029 00 A1 CER 270PF 5 50V NPO SM 2 212 032 00 A1 CER 2200PF 10 50V X7R 5 223 003 00 A1 LYT 22UF 20 6 3V SM 1 223 004 00 B1 LYT 10UF 20 16V SM 5 300 003 00 A DIO SW DL4148 100V SM 4 325 027 03 A CMOS 74HC74A DUAL D FLPFL 1 325 071 03 A CMOS 74HCU04 HEX INV SM 1 329...

Page 33: ... 2 140 061 00 A RES TF SM 1W 5 330 OHM 2 140 064 00 A RES TF SM 1W 5 430 OHM 1 140 065 00 A RES TF SM 1W 5 470 OHM 3 140 066 00 A RES TF SM 1W 5 510 OHM 53 140 068 00 A RES TF SM 1W 5 620 OHM 1 140 073 00 A RES TF SM 1W 5 1K0 OHM 64 140 074 00 A RES TF SM 1W 5 1K1 OHM 2 140 076 00 A RES TF SM 1W 5 1K3 OHM 1 140 077 00 A RES TF SM 1W 5 1K5 OHM 2 140 079 00 A RES TF SM 1W 5 1K8 OHM 4 140 080 00 A RE...

Page 34: ...52 00 B RES MF SM 1W 1 4K12 OHM 4 145 356 00 B RES MF SM 1W 1 4K53 OHM 2 145 358 00 B RES MF SM 1W 1 4K75 OHM 2 145 368 00 B RES MF SM 1W 1 6K04 OHM 2 145 373 00 B RES MF SM 1W 1 6K81 OHM 1 145 377 00 B RES MF SM 1W 1 7K50 OHM 2 145 388 00 B RES MF SM 1W 1 9K76 OHM 5 145 389 00 B RES MF SM 1W 1 10K0 OHM 16 145 397 00 B RES MF SM 1W 1 12K1 OHM 4 145 406 00 B RES MF SM 1W 1 15K0 OHM 4 145 416 00 B R...

Page 35: ... 4 220 008 02 A1 LYT 1UF 20 50V RAD TR 2 220 013 02 A1 LYT 22UF 20 50V RAD TR 12 220 027 02 B1 LYT 10UF 20 50V RAD TR 6 300 003 00 A DIO SW DL4148 100V SM 8 301 004 00 A DIO PWR DL4002 SM 16 302 010 03 B DIO ZEN DL5232B 5 6V SM 2 304 002 00 A LED RED T1 3 4 W FLASHER 1 304 027 02 C00 LED RED W 425 SPACER TR 5 304 028 02 C00 LED YEL W 425 SPACER TR 7 304 029 02 C00 LED GRN W 425 SPACER TR 20 310 00...

Page 36: ... SEPTEMBER 2002 PART REV DESCRIPTION QTY NOTES 620 042 00 A CBL FLT 16C W TABS 1 4 0 1 660 002 00 A 24GA JUMPER WIRE TR 82 706 009 00 C SPCR PLASTIC 385 LED 1 706 033 01 D STDF SWAGE NO 4 X 542L F 21 706 038 00 A STDF SWAGE 4 40X 25L 25OD 3 760 107 00 B BUTTON 2 COLOR 9X5MM 40 760 108 00 A BUTTON 2 COLOR 9X9MM 6 Master PCB assembly continued ...

Page 37: ...RES TF SM 1W 5 36K OHM 4 140 114 00 A RES TF SM 1W 5 47K OHM 8 140 123 00 A RES TF SM 1W 5 100K OHM 24 141 051 00 B RES TF SM 25W 5 120 OHM 4 145 066 00 B RES MF SM 1W 1 4 75 OHM 4 145 339 00 B RES MF SM 1W 1 3K01 OHM 20 145 346 00 B RES MF SM 1W 1 3K57 OHM 4 145 352 00 B RES MF SM 1W 1 4K12 OHM 4 145 389 00 B RES MF SM 1W 1 10K0 OHM 16 145 418 00 B RES MF SM 1W 1 20K0 OHM 8 146 373 00 A RES MF SM...

Page 38: ...PACER TR 4 311 002 00 A XSTR PNP MMST4403 SMT 8 320 020 00 A IC DUAL OP AMP NJM4565G 14 323 002 00 C LM339D QUAD COMP SM 2 400 464 00 AO1 JACK 1 4 V PCMNT 1MM WASH 8 400 223 00 A XLR PCMNT NEUTRIK AP SER 4 400 349 00 A HDR SKT BTTM ENTRY 14P 1 4 450 242 00 C PCB CFX SLAVE 4 1 0000162 A SWITCH 2PDT PUSH V SNAPIN 24 660 002 00 A 24GA JUMPER WIRE TR 31 706 033 01 D STDF SWAGE NO 4 X 542L F 10 760 107...

Page 39: ...20 25V RAD TR 1 220 007 00 B1 LYT 100UF 20 100V RAD 1 220 011 02 A1 LYT 100UF 20 25V RAD 2 220 012 02 B1 LYT 4 7UF 20 63V RAD TR 1 220 023 00 C1 LYT 6800UF 20 35V RAD 3 220 026 00 B1 LYT 1000UF 20 100V RAD 1 220 027 02 B1 LYT 10UF 20 50V RAD TR 2 301 001 00 A DIO PWR 1N4002 17 301 003 00 B DIO PWR 1N5401 3A 100V 4 321 003 00 B REG 7805 5V 1 321 008 00 B REG LM317T ADJ 2 321 009 00 A REG LM337T ADJ...

Page 40: ... 712 020 00 A BRKT ANG 6 32X 037THK STL 1 712 021 01 B RVT CL END 125X 062 125 2 055 260 00 02 REV B00 AC INPUT PCB ASSEMBLY PART REV DESCRIPTION QTY NOTES 400 010 00 B BNC PANEL MOUNT 1 400 065 00 A TERM QDISC 250 F 18 22GA 1 400 091 00 A TERM QDISC 187 F 18 22GA 1 610 027 00 B WIR 22G 1007 BLU 17IN ST2 1 610 028 00 B WIR 22G 1007 GRN 17IN ST2 1 705 030 00 1 NUT 3 8 W 400 010 00 1 710 047 00 1 WA...

Page 41: ...00 11 410 005 00 12 510 001 00 13 550 442 00 14 550 445 00 15 550 462 00 43 550 491 00 16 550 551 10 17 550 551 20 18 550 552 00 20 620 045 00 22 700 010 00 23 700 011 00 24 700 028 01 25 700 028 03 26 701 016 00 27 705 001 00 28 705 003 00 29 705 008 00 31 710 002 00 33 750 001 00 34 760 037 01 35 760 037 03 36 760 048 01 37 760 048 02 38 760 048 03 39 760 048 04 40 760 091 00 41 780 050 00 42 78...

Page 44: ...16 Parts List PART DESCRIPTION PAGE 090 121 0 CFX16 2 070 121 XX BOMSHELL CFX16 2 055 192 00 01 EFFECTS PCB ASSEMBLY 4 055 241 00 03 MASTER PCB ASSEMBLY 5 055 242 00 02 SLAVE PCB ASSEMBLY 9 055 258 00 01 POWER SUPPLY PCB ASSEMBLY 11 080 144 00 BNC ASSEMBLY 12 055 260 00 02 AC INPUT PCB ASSEMBLY 12 080 142 00 TRANSFORMER ASSY 010 120V 12 ...

Page 45: ...9 055 258 00 02 A11 POWER SUPPLY PCB ASSEMBLY 1 SEE PAGE 11 055 260 00 02 B00 AC INPUT PCB ASSEMBLY 1 SEE PAGE 12 080 144 00 D BNC ASSEMBLY 1 SEE PAGE 12 400 365 00 A QDISK TAB 250 M 6 MNT 1 410 005 00 A INSL SILPAD TO 220 4 550 443 00 B1 SCR CHASSIS TOP CXF 16 1 550 446 00 A1 CHASSIS BOTTOM CXF 16 1 550 462 00 A1 CLAMP TO 220 X 4 1 550 491 00 A1 FAB PLT HTSK CFX PWR SPLY 1 550 551 10 A1 PNT LEFT ...

Page 46: ... SLIDE 11X24 BLUE 4 760 048 01 B KNOB 9MM LT GRY 21 760 048 02 B KNOB 9MM MAGENTA 60 760 048 03 B KNOB 9MM BLU GRY 46 760 048 04 B KNOB 9MM DARK GRAY 26 760 091 00 A KNOB MASTER VOLUME 1 780 050 00 A LIPSEAL MASTER CFX 1 780 051 00 A LIPSEAL SLAVE 4 CFX 2 790 002 00 A BAG POLY 12 X 18 2MIL 1 790 027 00 A BAG POLY 20X7X36 4MIL GUS 1 800 131 00 B BOX CMPT CFX 16 1 810 083 00 A FOAM FRONT CMPT CFX 1 ...

Page 47: ...R 1000PF 5 5OV NPO SM 13 212 023 00 B1 CER 001UF 10 50V NPO SM 3 212 024 00 A1 CER 1UF 25V Y5V 1206 4 212 027 00 A1 CER 1UF 16V 10 X7R 0603 15 212 029 00 A1 CER 270PF 5 50V NPO SM 2 212 032 00 A1 CER 2200PF 10 50V X7R 5 223 003 00 A1 LYT 22UF 20 6 3V SM 1 223 004 00 B1 LYT 10UF 20 16V SM 5 300 003 00 A DIO SW DL4148 100V SM 4 325 027 03 A CMOS 74HC74A DUAL D FLPFL 1 325 071 03 A CMOS 74HCU04 HEX I...

Page 48: ...40 061 00 A RES TF SM 1W 5 330 OHM 2 140 064 00 A RES TF SM 1W 5 430 OHM 1 140 065 00 A RES TF SM 1W 5 470 OHM 3 140 066 00 A RES TF SM 1W 5 510 OHM 53 140 068 00 A RES TF SM 1W 5 620 OHM 1 140 073 00 A RES TF SM 1W 5 1K0 OHM 64 140 074 00 A RES TF SM 1W 5 1K1 OHM 2 140 076 00 A RES TF SM 1W 5 1K3 OHM 1 140 077 00 A RES TF SM 1W 5 1K5 OHM 2 140 079 00 A RES TF SM 1W 5 1K8 OHM 4 140 080 00 A RES TF...

Page 49: ...ES MF SM 1W 1 3K92 OHM 2 145 352 00 B RES MF SM 1W 1 4K12 OHM 4 145 356 00 B RES MF SM 1W 1 4K53 OHM 2 145 358 00 B RES MF SM 1W 1 4K75 OHM 2 145 368 00 B RES MF SM 1W 1 6K04 OHM 2 145 373 00 B RES MF SM 1W 1 6K81 OHM 1 145 377 00 B RES MF SM 1W 1 7K50 OHM 2 145 388 00 B RES MF SM 1W 1 9K76 OHM 5 145 389 00 B RES MF SM 1W 1 10K0 OHM 16 145 397 00 B RES MF SM 1W 1 12K1 OHM 4 145 406 00 B RES MF SM ...

Page 50: ...UF 20 50V RAD TR 2 220 013 02 A1 LYT 22UF 20 50V RAD TR 12 220 027 02 B1 LYT 10UF 20 50V RAD TR 6 300 003 00 A DIO SW DL4148 100V SM 8 301 004 00 A DIO PWR DL4002 SM 16 302 010 03 B DIO ZEN DL5232B 5 6V SM 2 304 002 00 A LED RED T1 3 4 W FLASHER 1 304 027 02 C00 LED RED W 425 SPACER TR 5 304 028 02 C00 LED YEL W 425 SPACER TR 7 304 029 02 C00 LED GRN W 425 SPACER TR 20 310 002 02 A1 XSTR PNP 2N440...

Page 51: ...roduct safety CFX 16 15 SEPTEMBER 2002 PART REV DESCRIPTION QTY NOTES 660 002 00 A 24GA JUMPER WIRE TR 82 706 009 00 C SPCR PLASTIC 385 LED 1 706 033 01 D STDF SWAGE NO 4 X 542L F 21 706 038 00 A STDF SWAGE 4 40X 25L 25OD 3 760 107 00 B BTN 2 COLOR 9X5MM 40 760 108 00 A BTN 2 COLOR 9X9MM 6 Master PCB assembly continued ...

Page 52: ...A RES TF SM 1W 5 36K OHM 4 140 114 00 A RES TF SM 1W 5 47K OHM 8 140 123 00 A RES TF SM 1W 5 100K OHM 24 141 051 00 B RES TF SM 25W 5 120 OHM 4 145 066 00 B RES MF SM 1W 1 4 75 OHM 4 145 339 00 B RES MF SM 1W 1 3K01 OHM 20 145 346 00 B RES MF SM 1W 1 3K57 OHM 4 145 352 00 B RES MF SM 1W 1 4K12 OHM 4 145 389 00 B RES MF SM 1W 1 10K0 OHM 16 145 418 00 B RES MF SM 1W 1 20K0 OHM 8 146 373 00 A RES MF ...

Page 53: ...5 SPACER TR 4 311 002 00 A XSTR PNP MMST4403 SMT 8 320 020 00 A IC DUAL OP AMP NJM4565G 14 323 002 00 C LM339D QUAD COMP SM 2 400 464 00 AO1 JACK 1 4 V PCMNT 1MM WASH 8 400 223 00 A XLR PCMNT NEUTRIK AP SER 4 400 349 00 A HDR SKT BTTM ENTRY 14P 1 4 450 242 00 C PCB CFX SLAVE 4 1 0000162 A SWITCH 2PDT PUSH V SNAPIN 24 660 002 00 A 24GA JUMPER WIRE TR 31 706 033 01 D STDF SWAGE NO 4 X 542L F 10 760 ...

Page 54: ... 25V RAD TR 1 220 007 00 B1 LYT 100UF 20 100V RAD 1 220 011 02 A1 LYT 100UF 20 25V RAD 2 220 012 02 B1 LYT 4 7UF 20 63V RAD TR 1 220 023 00 C1 LYT 6800UF 20 35V RAD 3 220 026 00 B1 LYT 1000UF 20 100V RAD 1 220 027 02 B1 LYT 10UF 20 50V RAD TR 2 301 001 00 A DIO PWR 1N4002 17 301 003 00 B DIO PWR 1N5401 3A 100V 4 321 003 00 B REG 7805 5V 1 321 008 00 B REG LM317T ADJ 2 321 009 00 A REG LM337T ADJ 1...

Page 55: ...712 020 00 A BRKT ANG 6 32X 037THK STL 1 712 021 01 B RVT CL END 125X 062 125 2 055 260 00 02 REV B00 AC INPUT PCB ASSEMBLY PART REV DESCRIPTION QTY NOTES 400 010 00 D BNC PANEL MOUNT 1 400 065 00 A TERM QDISC 250 F 18 22GA 1 400 091 00 A TERM QDISC 187 F 18 22GA 1 610 027 00 B WIR 22G 1007 BLU 17IN ST2 1 610 028 00 B WIR 22G 1007 GRN 17IN ST2 1 705 030 00 1 NUT 3 8 W 400 010 00 1 710 047 00 1 WAS...

Page 56: ...00 11 410 005 00 12 510 001 00 13 550 443 00 14 550 446 00 15 550 462 00 43 550 491 00 16 550 551 10 17 550 551 20 18 550 553 00 20 620 045 00 22 700 010 00 23 700 011 00 24 700 028 01 25 700 028 03 26 701 016 00 27 705 001 00 28 705 003 00 29 705 008 00 31 710 002 00 33 750 001 00 34 760 037 01 35 760 037 03 36 760 048 01 37 760 048 02 38 760 048 03 39 760 048 04 40 760 091 00 41 780 050 00 42 78...

Page 59: ...0 Parts List PART DESCRIPTION PAGE 090 122 00 CFX20 1 070 122 XX BOMSHELL CFX20 2 055 192 00 01 EFFECTS PCB ASSEMBLY 4 055 241 00 03 MASTER PCB ASSEMBLY 5 055 242 00 02 SLAVE PCB ASSEMBLY 9 055 258 00 01 POWER SUPPLY PCB ASSEMBLY 11 055 260 00 02 AC INPUT PCB ASSEMBLY 12 080 144 00 BNC ASSEMBLY 12 080 142 00 TRANSFORMER ASSY 010 120V 12 ...

Page 60: ... BNC ASSEMBLY 1 SEE PAGE 12 400 365 00 A QDISK TAB 250 M 6 MNT 1 410 005 00 A INSL SILPAD TO 220 4 550 444 00 B1 SCR CHASSIS TOP CXF 20 1 550 447 00 A1 CHASSIS BOTTOM CXF 20 1 550 462 00 A1 CLAMP TO 220 X 4 1 550 491 00 A1 FAB PLT HTSK CFX PWR SPLY 1 550 551 10 A1 PNT LEFT SIDE CFX 1 550 551 20 A1 PNT RIGHT SIDE CFX 1 550 554 00 B1 SCR BACK CFX 20 1 620 045 00 A CBL FLT 14C W PINS 3 5IN 6 700 010 ...

Page 61: ...tain product safety CFX 20 15 SEPTEMBER 2002 Bomshell CFX20 continued PART REV DESCRIPTION QTY NOTES 780 051 00 A LIPSEAL SLAVE 4 CFX 3 790 002 00 A BAG POLY 12 X 18 2MIL 1 790 027 00 A BAG POLY 20X7X36 4MIL GUS 1 800 132 00 B BOX CMPT CFX 20 1 810 083 00 A FOAM FRONT CMPT CFX 1 810 084 00 A FOAM REAR CMPT CFX 1 ...

Page 62: ...5OV NPO SM 13 212 023 00 B1 CER 001UF 10 50V NPO SM 3 212 024 00 A1 CER 1UF 25V Y5V 1206 4 212 027 00 A1 CER 1UF 16V 10 X7R 0603 15 212 029 00 A1 CER 270PF 5 50V NPO SM 2 212 032 00 A1 CER 2200PF 10 50V X7R 5 223 003 00 A1 LYT 22UF 20 6 3V SM 1 223 004 00 B1 LYT 10UF 20 16V SM 5 300 003 00 A DIO SW DL4148 100V SM 4 325 027 03 A CMOS 74HC74A DUAL D FLPFL 1 325 071 03 A CMOS 74HCU04 HEX INV SM 1 329...

Page 63: ... 140 061 00 A RES TF SM 1W 5 330 OHM 2 140 064 00 A RES TF SM 1W 5 430 OHM 1 140 065 00 A RES TF SM 1W 5 470 OHM 3 140 066 00 A RES TF SM 1W 5 510 OHM 53 140 068 00 A RES TF SM 1W 5 620 OHM 1 140 073 00 A RES TF SM 1W 5 1K0 OHM 64 140 074 00 A RES TF SM 1W 5 1K1 OHM 2 140 076 00 A RES TF SM 1W 5 1K3 OHM 1 140 077 00 A RES TF SM 1W 5 1K5 OHM 2 140 079 00 A RES TF SM 1W 5 1K8 OHM 4 140 080 00 A RES ...

Page 64: ...52 00 B RES MF SM 1W 1 4K12 OHM 4 145 356 00 B RES MF SM 1W 1 4K53 OHM 2 145 358 00 B RES MF SM 1W 1 4K75 OHM 2 145 368 00 B RES MF SM 1W 1 6K04 OHM 2 145 373 00 B RES MF SM 1W 1 6K81 OHM 1 145 377 00 B RES MF SM 1W 1 7K50 OHM 2 145 388 00 B RES MF SM 1W 1 9K76 OHM 5 145 389 00 B RES MF SM 1W 1 10K0 OHM 16 145 397 00 B RES MF SM 1W 1 12K1 OHM 4 145 406 00 B RES MF SM 1W 1 15K0 OHM 4 145 416 00 B R...

Page 65: ...LYT 470UF 20 6 3V RAD TR 4 220 008 02 A1 LYT 1UF 20 50V RAD TR 2 220 013 02 A1 LYT 22UF 20 50V RAD TR 12 220 027 02 B1 LYT 10UF 20 50V RAD TR 6 300 003 00 A DIO SW DL4148 100V SM 8 301 004 00 A DIO PWR DL4002 SM 16 302 010 03 B DIO ZEN DL5232B 5 6V SM 2 304 002 00 A LED RED T1 3 4 W FLASHER 1 304 027 02 C00 LED RED W 425 SPACER TR 5 304 028 02 C00 LED YEL W 425 SPACER TR 7 304 029 02 C00 LED GRN W...

Page 66: ... SEPTEMBER 2002 PART REV DESCRIPTION QTY NOTES 620 042 00 A CBL FLT 16C W TABS 1 4 0 1 660 002 00 A 24GA JUMPER WIRE TR 82 706 009 00 C SPCR PLASTIC 385 LED 1 706 033 01 D STDF SWAGE NO 4 X 542L F 21 706 038 00 A STDF SWAGE 4 40X 25L 25OD 3 760 107 00 B BUTTON 2 COLOR 9X5MM 40 760 108 00 A BUTTON 2 COLOR 9X9MM 6 Master PCB assembly continued ...

Page 67: ...A RES TF SM 1W 5 36K OHM 4 140 114 00 A RES TF SM 1W 5 47K OHM 8 140 123 00 A RES TF SM 1W 5 100K OHM 24 141 051 00 B RES TF SM 25W 5 120 OHM 4 145 066 00 B RES MF SM 1W 1 4 75 OHM 4 145 339 00 B RES MF SM 1W 1 3K01 OHM 20 145 346 00 B RES MF SM 1W 1 3K57 OHM 4 145 352 00 B RES MF SM 1W 1 4K12 OHM 4 145 389 00 B RES MF SM 1W 1 10K0 OHM 16 145 418 00 B RES MF SM 1W 1 20K0 OHM 8 146 373 00 A RES MF ...

Page 68: ...2 00 A XSTR PNP MMST4403 SMT 8 320 020 00 A IC DUAL OP AMP NJM4565G 14 323 002 00 C LM339D QUAD COMP SM 2 400 464 00 AO1 JACK 1 4 V PCMNT 1MM WASH 8 400 223 00 A XLR PCMNT NEUTRIK AP SER 4 400 349 00 A HDR SKT BTTM ENTRY 14P 1 4 450 242 00 C PCB CFX SLAVE 4 1 0000162 A SWITCH 2PDT PUSH V SNAPIN 24 660 002 00 A 24GA JUMPER WIRE TR 31 706 033 01 D STDF SWAGE NO 4 X 542L F 10 760 107 00 B BTN 2 COLOR...

Page 69: ... 25V RAD TR 1 220 007 00 B1 LYT 100UF 20 100V RAD 1 220 011 02 A1 LYT 100UF 20 25V RAD 2 220 012 02 B1 LYT 4 7UF 20 63V RAD TR 1 220 023 00 C1 LYT 6800UF 20 35V RAD 3 220 026 00 B1 LYT 1000UF 20 100V RAD 1 220 027 02 B1 LYT 10UF 20 50V RAD TR 2 301 001 00 A DIO PWR 1N4002 17 301 003 00 B DIO PWR 1N5401 3A 100V 4 321 003 00 B REG 7805 5V 1 321 008 00 B REG LM317T ADJ 2 321 009 00 A REG LM337T ADJ 1...

Page 70: ...12 020 00 A BRKT ANG 6 32X 037THK STL 1 712 021 01 B RIVET CL END 125X 062 125 2 055 260 00 02 REV B00 AC INPUT PCB ASSEMBLY PART REV DESCRIPTION QTY NOTES 400 010 00 B BNC PANEL MOUNT 1 400 065 00 A TERM QDISC 250 F 18 22GA 1 400 091 00 A TERM QDISC 187 F 18 22GA 1 610 027 00 B WIR 22G 1007 BLU 17IN ST2 1 610 028 00 B WIR 22G 1007 GRN 17IN ST2 1 705 030 00 1 NUT 3 8 W 400 010 00 1 710 047 00 1 WA...

Page 71: ...00 11 410 005 00 12 510 001 00 13 550 444 00 14 550 447 00 15 550 462 00 43 550 491 00 16 550 551 10 17 550 551 20 18 550 554 00 20 620 045 00 22 700 010 00 23 700 011 00 24 700 028 01 25 700 028 03 26 701 016 00 27 705 001 00 28 705 003 00 29 705 008 00 31 710 002 00 33 750 001 00 34 760 037 01 35 760 037 03 36 760 048 01 37 760 048 02 38 760 048 03 39 760 048 04 40 760 091 00 41 780 050 00 42 78...

Page 86: ...ved MASTER BOARD 241 REV A 241 13 Top of Board if this has been printed double sided and has been lined up cor rectly you can shine a light through this page and see the bottom of the board s traces and pads Sometimes this works some times not ...

Page 88: ...O O U 15 O O U 15 O O 1 2 EFX 2 INT EFX 1 EXT PRE FADER AUX U 15 O O U 15 O O U 15 O O U 15 O O 1 2 EFX 2 INT EFX 1 EXT PRE FADER AUX U 15 O O U 15 O O U 15 O O U 15 O O 1 2 EFX 2 INT EFX 1 EXT PRE FADER AUX U 15 O O U 15 O O U 15 O O U 15 O O 1 2 EFX 2 INT EFX 1 EXT PRE FADER AUX U 15 O O U 15 O O U 15 O O U 15 O O 1 2 EFX 2 INT EFX 1 EXT PRE FADER AUX U 15 O O U 15 O O U 15 O O U 15 O O 1 2 EFX ...

Page 93: ...100 12k HI MID FREQ 80Hz LOW EQ U 15 15 U 15 15 U 15 15 ASSIGN L R PAN L R PAN L R PAN L R PAN 3 4 1 2 MUTE 3 4 1 2 MUTE 3 4 1 2 MUTE dB 30 20 10 O O 40 50 5 5 U 60 10 SOLO PFL dB 30 20 10 O O 40 50 5 5 U 60 10 SOLO PFL dB 30 20 10 O O 40 50 5 5 U 60 10 SOLO PFL dB 30 20 10 O O 40 50 5 5 U 60 10 SOLO PFL 1 EFX 2 INT EFX 1 EXT PRE FADER AUX U 15 O O U 15 O O U 15 O O U 15 O O 1 2 EFX 2 INT EFX 1 EX...

Page 97: ...FT SIDE CFX A 1 17 550 551 20 PNT RIGHT SIDE CFX A 1 18 550 552 00 SCR BACK CFX 12 B 1 CFX12 18 550 553 00 SCR BACK CFX 16 B 1 CFX16 18 550 554 00 SCR BACK CFX 20 B 1 CFX20 20 620 045 00 CBL FLT 14C W PINS 3 5IN A 2 640 001 00 LC IEC SJT 10A 125V 6FT D 1 LINECORD 22 700 010 00 TF 6 32X1 4 PHP BLKZC A 26 23 700 011 00 MCH 4 40X1 4 BTNSKT BLKOX A 34 24 700 028 01 SEMS 6 32X5 16 PHP BLKZC B 6 25 700 ...

Page 98: ...dB 30 20 10 OO 40 50 5 5 U 60 10 dB 30 20 10 OO 40 50 5 5 U 60 10 15 15 5 10 0 5 10 15 15 5 10 0 5 10 1 EFX 2 INT EFX 1 EXT POWER STATUS RUDE SOLO BREAK SWITCH MUTES ALL CHANNELS PRE FADER AUX U 15 O O U 15 O O U 15 O O U 15 O O 1 2 EFX 2 INT EFX 1 EXT PRE FADER AUX U 15 O O U 15 O O U 15 O O U 15 O O 1 2 EFX 2 INT EFX 1 EXT PRE FADER AUX U 15 O O U 15 O O U 15 O O U 15 O O 1 2 EFX 2 INT EFX 1 EXT...

Page 99: ...2 SERVICE ON THIS EQUIPMENT IS TO BE PERFORMED BY EXPERIENCED REPAIR TECHNICIANS ONLY ...

Page 100: ...ions SERVICE TECHNICAL ASSISTANCE Mackie Designs Service Technical Assistance is available 8AM 5PM PST Monday through Friday for Authorized Mackie Service Centers at 1 800 258 6883 Feel free to call with any questions and speak with a carefully calibrated technician If one is not available leave a detailed message and a qualified Mackoid will return your call asap DISCLAIMER The information contai...

Page 101: ...X 16 has two and the CFX 20 has three This is the main difference between the three models The power board regulates the AC power to 15VDC 5VDC and 48VDC phantom power The AC power board holds the IEC connector fuse holder power switch and caps This table shows which boards are used in each mixer Note Each schematic chapter is labeled with the number of the board it describes For example chapter 2...

Page 102: ... MID HI 80 800 12K LO MID 3K AUX 1 AUX 2 EFX 1 EFX 2 PRE POST PAN MAIN TRIM LEFT RIGHT SOLO 1 2 MUTE EFX RETURN 1 SUBWOOFER OUT 1 2 3 63 125250500 1K 2K 4K 8K 16K TAPE OUT RIGHT BREAK MAIN LEVEL MAIN INSERT LEFT ASSIGN RIGHT ASSIGN SUB 1 OUT 63 125250500 1K 2K 4K 8K 16K TAPE OUT LEFT BREAK TAPE LEVEL MAIN LEVEL MAIN INSERT TAPE IN LEFT TAPE IN RIGHT EFX 2 EFX 1 SOLO SOLO CONTROL AUX 2 AUX 1 SUB 1 ...

Page 103: ... Input 28 dBu Trim 50 dB 18 dBu Trim 6 dB Line Input 8 dBu Trim 30 dB 38 dBu Trim 15 dB Insert Input Stereo Line Input Tape Input and Effects Return 20 dBu Maximum Voltage Gain Mic Input to Insert Output 50 dB Tape Output 66 dB Sub Output 66 dB Main Output 76 dB Aux Send 71 dB Line Input to Insert Output 30 dB Tape Output 46 dB Sub Output 46 dB Main Output 56 dB Aux Send 51 dB Stereo Line Input to...

Page 104: ...TERS EFX 2 SEND TO MAIN MIX EFFECTS TO MONITOR AUX 1 AUX 2 CUSTOM 32 BIT PRECISION DIGITAL STEREO EFFECTS PROCESSOR Adjustment of the rotary encoder S1 will vary the level of BIT 0 through to BIT 3 This will select which DSP algorithm is in effect on the EFX board s DSP IC U2 The adjustment of these two pots directly affects the CODEC IC U3 The levels are named POT 1 and POT 2 at connector J1 The ...

Page 105: ...al signal The CODEC also receives analog control signals from the two Parameter pots converts this to digital and sends a combined digital signal to the DSP The DSP and the two SRAM ICs form a powerful DSP system The DSP receives the digital data from the CODEC as well as the direct control signals from the rotary encoder and the EFX WIDE switch The DSP programing selects and performs the appropri...

Page 106: ...nit under test 2 Connect the mixer under test to an AC power source using a ground lift adaptor leaving the mixer s safety ground floating Turn the mixer on 3 The meter reading should be less than 750mVAC note this is equivalent to 0 5mA of leakage current 4 Flip the plug over in the receptical so the hot and neutral are swapped Verify that the reading is still less then 750mVAC 5 If either readin...

Page 107: ... 12 13 SOLO GND 14 SOLO CTL J1 1 J1 2 J1 J1 3 J1 4 J1 5 J1 6 J1 7 J1 8 J1 9 J1 10 J1 11 J1 12 J1 13 J1 14 J1 15 J1 16 FLAG IN BANK 5V DGND MONO IN AGND RIGHT OUT LEFT OUT POT1 POT2 CLIP_LED N C BIT 0 BIT 1 BIT 2 BIT 3 Connectors MIXER TO EFX BOARD Rotary Encoder Analog outputs Analog input WIDE switch Bypass switch This shows the signals present on the EFX board connector J1 The details for the mi...

Page 108: ...1 8 EFX_1 9 EFX_2 10 EFX_2 11 16V 12 16V 13 14 48V J16 1 SUB_4 2 SUB_4 3 SUB_2 4 SUB_4 5 SUB_3 6 SUB_3 7 SUB_1 8 SUB_1 9 CHAN_GND 10 CHAN_GND 11 PFL 12 13 SOLO GND 14 SOLO CTL SLAVE CIRCUIT BOARD CONNECTIONS This shows the signals into the SLAVE board from the MASTER Actually this is all rather sad that past generations fought in the American Civil War to put a stop to this sort of thing All circu...

Page 109: ... LEVEL MICGAIN 6 50 U 15dB 30dB XLR 400 223 00 1 4 jack 400 214 00 Pot 130 003 02 Knob 760 048 02 Magenta Switch 500 037 00 Button 760 107 00 Pot 130 002 02 Knob 760 048 03 Blue Pot 130 064 02 Knob 760 048 04 Dk Grey Pot 130 002 02 Knob 760 048 03 Blue Pot 130 003 02 Knob 760 048 04 Dk Grey Pot 130 030 02 Knob 760 048 01 white LED 304 028 02 yellow Switch 500 037 00 Button 760 107 00 Switch 500 03...

Page 110: ...MP 12V 0 5A MAIN OUT L R 11 LEFT AUX SEND UTILITY OUT SUB OUT TAPE INPUT TAPE OUTPUT L L R 1 2 1 2 L L R R L R EFX SEND STEREO EFX RETURN MAIN INSERT MONO MONO L R S 75Hz SUB OUT R 1 2 1 2 3 4 MAIN OUT 9 LEFT RIGHT 10 RIGHT 12 12k HI HI MID 3k 80Hz LOW EQ U 15 15 U 15 15 U 15 15 U 15 15 12k HI HI MID 3k 80Hz LOW EQ U 15 15 U 15 15 U 15 15 U 15 15 XLR 400 041 00 All 1 4 jacks 400 214 00 Quad RCA ja...

Page 111: ... 2 INT RETURN MASTERS EFX 2 SEND TO MAIN MIX EFFECTS TO MONITOR AUX 1 AUX 2 PHANTOM POWER CFX12 MIXER STEREO GRAPHIC EQ 1K 500 250 63 125 16K 2K 4K 8K 12 CHANNEL COMPACT INTEGRATED LIVE SOUND MIXER Green LED 304 029 02 RED LED 304 002 00 Pot 130 061 02 Knob 760 048 01 white Switch 500 037 00 Button 760 107 00 Pot 130 003 02 Knob 760 048 02 magenta Red LED 304 027 02 Pot 130 061 02 Knob 760 048 01 ...

Page 112: ... 040 Cables 055 Finished PCB Assy 100 Pots and resistors 200 Capacitors 300 Semiconductors 400 Jacks Connectors 500 Switches 510 Fuses 550 Chassis Metalwork 600 Transformers 601 Inductors 610 Wires and Cables 640 AC line cords 700 Hardware 760 Knobs Plastic 770 Fans 790 Misc Packing 800 Printed Material 860 EPROM Components noted with this symbol shall be replaced only by the component specified T...

Page 113: ...5 550 462 00 CLAMP TO 220 X 4 A 1 43 550 491 00 FAB PLT HTSK CFX PWR SPLY A 1 16 550 551 10 PNT LEFT SIDE CFX A 1 17 550 551 20 PNT RIGHT SIDE CFX A 1 18 550 552 00 BACK CFX 12 B 1 CFX12 18 550 553 00 BACK CFX 16 B 1 CFX16 18 550 554 00 BACK CFX 20 B 1 CFX20 20 620 045 00 CBL FLT 14C W PINS 3 5IN A 2 4 6 2 for CFX 12 4 16 6 20 640 001 00 LC IEC SJT 10A 125V 6FT D 1 120v Linecord 640 002 02 LC JAPA...

Page 114: ...BAG POLY 20X7X36 4MIL GUS A 1 800 130 00 BOX CMPT CFX 12 B 1 CFX12 800 131 00 BOX CMPT CFX 16 B 1 CFX16 800 132 00 BOX CMPT CFX 20 B 1 CFX20 810 086 00 FOAM SET CFX 1 820 104 00 OWNR MNL COMPACT CFX A 1 COVERS ALL CFX Item Part Description Rev Qty Notes ...

Page 115: ...000PF 5 C42 45 C47 48 C50 56 212 023 00 CAPACITOR CERAMIC SMT 0 001 10 C7 8 C36 212 024 00 CER 1UF 25V Y5V 1206 1UF 400 C10 11 C15 C34 212 027 00 CAPACITOR CERAMIC SMT 1UF 10 C1 C3 4 C12 C14 C16 17 C20 C24 25 C27 C29 C32 33 C38 212 029 00 CAPACITOR CERAMIC SMT 270PF 5 C22 23 212 032 00 CAPACITOR CERAMIC X7R SMT 2200PF 10 C35 C37 C39 41 220 011 00 LYT 100UF 20 25V RAD 100UF 10 C5 223 003 00 LYT 22U...

Page 116: ...0 061 00 RESISTOR CF 330 5 R842 R844 140 064 00 RES TF SM 1W 5 430 OHM 430 5 R765 140 065 00 RESISTOR CF 470 5 R841 R843 R845 140 066 00 RES TF SM 1W 5 510 OHM 510 5 R35 R37 R40 41 R70 73 R115 R117 R121 R132 R150 153 R198 R200 R204 R215 R235 238 R276 R278 R282 R291 R312 315 R336 337 R347 R356 R394 397 R433 434 R445 R456 R499 502 R618 R675 R840 R850 851 140 068 00 RESISTOR CF 620 5 R839 140 073 00 ...

Page 117: ...872 R875 R877 140 098 00 RES TF SM 1W 5 11K OHM 11K 5 R155 R157 R240 R243 R399 R403 R504 R508 R565 R570 R644 R649 140 101 00 RES TF SM 1W 5 15K OHM 15K 5 R159 R161 R242 R246 R377 R463 R478 R489 R571 R573 R651 R716 140 104 00 RES TF SM 1W 5 20K OHM 20K 5 R30 R46 R91 R110 R125 R176 R208 R284 R542 R546 R874 R876 140 105 00 RESISTOR TF SMT 22K 5 R537 140 108 00 RESISTOR TF SMT 27K 5 R11 R86 R171 R256 ...

Page 118: ... RESISTOR MF SMT 15K0 1 R662 R668 R717 R738 145 416 00 RESISTOR MF SMT 19K1 1 R728 R737 145 417 00 RESISTOR MF SMT 19K6 1 R813 R830 145 418 00 RES MF SM 1W 1 20K0 OHM 20K0 1 R7 8 R82 83 R167 168 R252 253 145 426 00 RESISTOR MF SMT 24K3 1 R582 R589 R600 R611 145 435 00 RESISTOR MF SMT 30K1 1 R659 R661 R667 R674 145 445 00 RESISTOR MF SMT 38K3 1 R721 R725 R733 R742 145 455 00 RESISTOR MF SMT 48K7 1 ...

Page 119: ...5 00 CAPACITOR CERAMIC SMT 33PF 5 C288 C293 212 018 00 CER 10PF 5 50V NPO SM 10PF 5 C32 C73 C119 C161 C169 C201 C206 C247 212 019 00 CAPACITOR CERAMIC SMT 150PF 5 C10 C15 C21 C23 C50 C55 C62 C64 C95 C100 C107 C109 C143 C148 C151 C153 212 021 00 CAPACITOR CERAMIC SMT 27pF C270 271 C276 C321 C326 327 C469 470 C475 477 C484 212 023 00 CAPACITOR CERAMIC SMT 0 001 10 C9 C49 C94 C142 C175 C220 220 002 0...

Page 120: ...ARATOR SMD LM339 U2 U6 U66 71 325 086 03 IC ANALOG MUX DEMUX 74HC4053 U32 U35 U40 400 022 00 CONNECTOR JACK QUAD RCA HORIZ J25 400 041 00 CONNECTOR XLR PC MTG VERT MALE J39 41 400 048 00 HDR 7P 156X1 RTA J44 400 214 00 JACK 1 4 V PCMNT 1MM WASH J2 3 J7 8 J10 11 J13 24 J26 33 J35 38 J42 43 400 223 00 CONNECTOR XLR PC MTG VERT FML J1 J6 J9 J12 400 349 00 HDR SKT BOT ENTRY 14P 100X1 J4 5 450 241 00 P...

Page 121: ...244 R317 140 098 00 RES TF SM 1W 5 11K OHM 11K 5 R155 R157 R240 R243 140 101 00 RES TF SM 1W 5 15K OHM 15K 5 R159 R161 R242 R246 140 104 00 RES TF SM 1W 5 20K OHM 20K 5 R30 R46 R91 R110 R125 R176 R208 R284 140 108 00 RESISTOR TF SMT 27K 5 R11 R86 R171 R256 140 111 00 RES TF SM 1W 5 36K OHM 36K 5 R25 R105 R189 R267 140 114 00 RES TF SM 1W 5 47K OHM 47K 5 R48 49 R127 128 R210 211 R286 287 140 123 00...

Page 122: ...167 C169 170 220 003 02 LYT 47UF 20 50V RAD TR 47UF 10 C1 C7 C41 C47 C86 C92 C134 C140 220 004 02 CAPACITOR LYTIC RADIAL T R 470UF 10 C16 C56 C101 C149 220 013 02 LYT 22UF 20 50V RAD TR 22UF 10 C22 C25 C27 C63 C66 C68 C108 C111 C113 C152 C155 C157 301 004 00 DIO PWR DL4002 SM DL4002 D1 4 D6 9 D11 14 D16 19 304 028 02 LED YEL W 425 SPACER TR YEL D5 D10 D15 D20 311 002 00 X SISTOR PNP SMD IMBT4403 Q...

Page 123: ...OR 321 008 00 I C ADJ POS 3 TERM VOLTAGE LM317T U1 U4 REGULATOR 321 009 00 I C ADJ NEG 3 TERM VOLTAGE LM337T U2 REGULATOR 400 060 00 FUSE CLIP PC MT 5MM DIA NULL Z8 9 400 093 00 HDR 7P 156X1 LOCKING J2 400 173 00 TERM 25 QKDS PCMT STABLE J3 400 348 00 TERM QDISC 187 MALE PCMT J4 400 350 00 HDR 9P 156X1 STR LOCK J1 450 258 00 PCB CFX POWER SUPPLY Z18 510 002 00 FUSE 5A SLO BLO 5 X 20MM 5A F1 PART N...

Page 124: ... on the Powered Mixer series the front panel must be removed 1 Remove all cords including the power cable and speaker outputs from the mixer 2 Place the mixer on a dry non marring surface with the heat sink facing down 3 Remove the six screws securing the front panel of the mixer to the plastic enclosure These are located three per side on the far left and right edges of the front panel Keep track...

Page 125: ...y cut pin 1 of the cable as shown in the diagram below The cut should be flush with the ribbon cable s insulation so there is no chance of any electrical contact 5 Replace the ribbon cable onto the EFX board making sure that all pins are inserted correctly and there is no connection to pin 1 6 Reassemble the mixer and fully retest before returning it to your customer CUT OFF PIN 1 as flush as poss...

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