Mach 1 Acoustics 8-BUS Service manual
8•BUS
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8•BUS MIXING CONSOLE
SERVICE MANUAL
1993, 1999 MACKIE DESIGNS, INC.
820-177-00
SERVICE ON THIS EQUIPMENT IS TO BE PERFORMED BY
EXPERIENCED REPAIR TECHNICIANS ONLY
2
CONTENTS
Click on any item to open that page
ALL BOARDS
INTRODUCTION .................................................................................3
Technical Support ........................................................................ 3
Disclaimer.......................................................................................3
BLOCK DIAGRAM ............................................................................. 4
PARTS.......................................................................................5-8, A-1
FOLD-OUT SECTIONS: (Schematics and PCB layouts)
Mic/Line Preamp board ........................................................ 08-1
Channel board ....................................................................... 09-1
Output board ......................................................................... 10-1
Meter board ............................................................................ 11-1
Jack Field board..................................................................... 12-1
Tape Output board............................................................... 13-1
Tape Input board ................................................................... 14-1
Power Supply .......................................................................... 15-1
Expander board ..................................................................... 19-1
Power Distribution board....................................................... 20-1
Expander Output board ....................................................... 21-1
Analog Meter board ............................................................. 22-1
LED Meter board .................................................................... 23-1
INTRODUCTION
SERVICE ON THIS EQUIPMENT IS TO BE PERFORMED BY
EXPERIENCED REPAIR TECHNICIANS ONLY
This manual contains basic service information. It is essential that you have a
copy of the user’s manual as this contains the complete operating instructions.
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 contained in this manual is proprietary to Mackie Designs, Inc. The entire
manual is protected under copyright and may not be reproduced by any means without
express written permission from Mackie Designs, Inc.
3
BLOCK DIAGRAM
•
•
L-MIX-B
AUX 5
AUX 3
AUX 1
L-SOLO
R-BUS
L-BUS
BUS 7
BUS 5
BUS 3
BUS 1
•
•
•
•
•
SUB OUTS 1, 9 & 17
+4/-10
•
METER
•
•
INSERT
R-MIX-B
AUX 6
AUX 4
AUX 2
R-SOLO
BUS 8
BUS 6
BUS 4
BUS 2
•
•
•
•
•
SUB OUTS 2, 10 & 18
+4/-10
METER
•
•
INSERT
L + R
•
•
SOLO
•
•
R MIX
•
•
•
•
-
+
•
•
FADER
SUB MSTR
(#3 - 8 IDENTICAL)
•
L + R
•
L MIX
SOLO
•
•
-
+
•
FADER
SUB MSTR
SUB MASTER 1 & 2
NOTE: ALL SWITCHES SHOWN IN DISENGAGED (UP) POSITION
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
OPTIONAL 24•E
EXPANDER CONSOLE
24-CHANNEL MACKIE 8•BUS
•
•
•
1-2
PAN
–20dB
0L
INSERT
•
•
MIC/LINE
•
•
•
2
3
1
MIC IN
•
LEVEL
•
•
3-4
•
•
•
•
•
•
EQ
IN/OUT
•
EQ
SHELVING
EQ
PARAMETRIC
IN/OUT
LO CUT
75Hz
•
+
(PER 8 CHANNELS)
PHANTOM POWER
AUX OUT
•
•
•
•
•
•
CHAN
FADER
•
MIDLO LOHI
MID
HI
••
HPF
•
-
•
5-6
•
•
•
•
•
SOLO
•
(#4, 5, 6 IDENTICAL)
AUX SEND 3
•
•
•
7-8
•
•
•
•
MUTE
SPLIT
HI/LO EQ
TO MIX B
•
•
•
FREQ
GAIN
"Q"
FREQ
GAIN
PRE EQ
TO AUX MOD
FLIP
TRIM
IN
LINE
•
AUX OUT
•
+
LEVEL
•
•
L/R
•
•
POST
•
•
-
•
•
•
•
AUX 1
•
PRE
•
•
-
+
IN
TAPE
•
•
SOLO
•
(#2 IDENTICAL)
AUX SEND 1
•
•
•
•
•
SOLO
PFL MOD
•
AUX 3
AUX 5
AUX 2
•
SOURCE
PRE
POST
PRE
POST
•
•
(PER 8 CH'S)
+4dBU/–10dBV Select
•
•
•
•
•
•
•
•
AUX 4
AUX 6
SHIFT
PRE
POST
•
OUT
DIRECT
PHONES 1
L
LEVEL
PHONES 1
MONITOR
•
•
SOURCE
PHONES 1
vu
vu
TAPE IN
CH. OUT
•
LEVEL
CHANNEL MIX-B SOURCE MOD
•
•
OPTIONAL METER BRIDGE
SELECT
GLOBAL
•
•
PAN
•
••
FLIP SW
MIX-B
SOURCE
•
INPUT
1 OF 16 (24) (32)
OUTPUT
•
•
AUX 3/4
MIX-B
•••
•
•
•
•
•
L
MIX-B OUTPUT
MIX B
MASTER
•
•
•
•
SOLO
IS SELECTED)
R
(DEFEATED WHEN
CNTRL RM SOURCE
•
•
•
AUX 5/6
EXTERNAL
MONITOR
•
••
•
••
•••
•
•
R
PHONES 2
L UNBAL OUTPUT
•
TO
MIX-B
L/R MIX
•
•
SOURCE
L METER
INSERT
•
R METER
1
2
+
•
•
INSERT
•
3
-
•
•
•
•
•
•
•
•
•
•
•
•
1-2
3-4
•
L/R
7-8
5-6
•
•
•
•
•
BALANCE
LEVEL
••
LEFT
RIGHT
(MONO)
OUTPUT
PHONES 2
SOLO
L
R
•
•
LEVEL
PHONES 2
•
•
•
•
AUX 3/4
MIX-B
EXTERNAL
AUX 5/6
•
•
•
•
•
•••
•
•
•
•
1
2
3
L BAL OUTPUT
•
R UNBAL OUTPUT
•
L/R
MIX
FADER
•
•
INSERT
•
•
SOLO
•
+
•
•
R BAL OUTPUT
-
•••••
(#2 IDENTICAL)
STEREO AUX RETURN 1
(DEFEATED WHEN
CNTRL RM SOURCE
•
•
PHONES 1
•
•
LEFT
(MONO)
IS SELECTED)
•
•
•
•
•
•
•
L/R
SOLO
PHONES 2
•
•
•
•
•
LEVEL
RIGHT
STEREO AUX RETURN 3
L
STUDIO
OUTPUT
•
LEVEL
STUDIO
•
••
MONO
•
SOLO
CONTROL
•
•
•
•••
•
•
•
•
(#4 IDENTICAL)
L
R
STUDIO
OUTPUT
CNTRL RM
•
••
•
•
•
•
•
•
•
•
SOLO
LEVEL
L/R MIX
TO AUX 1
TO AUX 2
TALKBACK:
•
MIC LEVEL
MIC
•
•
•
•
•
•
•
•
To on-ramp #257
of the Santa Ana Freeway
L/R
SOLO
•
•
LEVEL
•
(#6 IDENTICAL)
LEFT
RIGHT
(MONO)
STEREO AUX RETURN 5
OUTPUT
LEVEL
CNTRL RM
•
•••
MIX-B
TO TAPE/
SUBMASTER
•
•
•
R
OUTPUT
CNTRL RM
••
•••
2-TK
TO PHONES
(AND STUDIO)
•
•
•
L
2-TK IN
SOURCE
MONITOR
EXTERNAL
R
2-TK IN
•
•
IN L
EXTERNAL
PAD LOGIC
CONTROL ROOM
•
IN R
EXTERNAL
4
QUICK PARTS
XLR - female jack
400-223-00
*MIC/LINE
button 760-003-00
switch 500-018-00
BNC
400-010-00
GAIN TRIM (off-white)
knob 760-023-00
5k pot 130-020-00
AUX SENDS (magenta)
knob 760-016-00
50k pot 130-003-00
EQ LEVEL (blue-gray)
knob 760-017-00
50k pot 130-002-00
EQ FREQ (dark gray)
knob 760-048-04
50k pot 130-017-00
EQ FREQ (dark gray)
knob 760-048-04
500k pot 130-023-00
MIX B Pan (dark gray)
knob 760-018-00
50k pot 130-003-00
MIX B Level (off-white)
knob 760-023-00
50k pot 130-003-00
PAN (dark gray)
knob 760-018-00
50k pot 130-063-02
RED LED
304-001-00
YELLOW LED
304-003-00
MUTE
button 760-108-00
switch 500-018-00
END CAP - LEFT
760-022-00
*PHANTOM POWER
button 760-003-00
switch 500-018-00
1/4"- female jack
400-214-00
RUBBER PLUG
FLIP
button 760-003-00
switch 500-018-00
AUX - pre/shift/source
button 760-003-00
switch 500-018-00
EQ BWidth (dark gray)
knob 760-048-04
50k pot 130-003-00
EQ LEVEL (blue-gray)
knob 760-017-00
10k pot 130-022-02
HI/LO EQ (blue-gray)
knob 760-017-00
50k pot 130-002-00
EQ - in / low cut
button 760-108-00
switch 500-018-00
MIX B - split
button 760-011-00
switch 500-012-00
MIX B - source
button 760-003-00
switch 500-018-00
GREEN LED
304-004-00
SOLO
button 760-013-00
switch 500-012-00
BUS ASSIGN
button 760-008-00
switch 500-018-00
sheet 1of 2
Exploded Master
Section - see sh. 2
RED LED rect
304-007-00
YELLOW LED rect
304-008-00
GREEN LED rect
304-009-00
SUB-M SOLO
button 760-013-00
switch 500-012-00
RED LED
304-001-00
TALKBACK MIC
480-001-00
SUB-M MONO
button 760-013-00
switch 500-018-00
SUB-M ASSIGN
button 760-002-00
switch 500-018-00
END CAP - RIGHT
760-021-00
VOLUME
gnob 760-024-01
10k pot 130-016-00
*NOTE: CHANNEL MIC/LINE, PHANTOM POWER SWITCHES ALSO REQUIRE -
SWITCH BUTTON EXTENDER PART#760-015-00
MASTER VOLUME
knob 760-024-01
10k pot 130-014-00
05/99
5
EXPLODED MASTER
SECTION
RED LED 304-001-00
SOLO
button 760-013-00
switch 500-012-00
AUX SENDS (magenta)
knob 760-016-00
50k pot 130-003-00
RED LED 304-001-00
LEVEL (off-white)
knob 760-023-00
50k pot 130-012-00
MONITOR ASSIGN
button 760-013-00
switch 500-012-00
MIX B > L/R MIX
button 760-108-00
switch 500-018-00
RED LED
SOLO
button 760-013-00
switch 500-012-00
304-001-00
8 Bus Quick Parts
PHONES SOURCES
button 760-013-00
switch 500-018-00
AUX PAN (dark gray)
knob 760-048-04
50k pot 130-003-00
STUDIO LEVEL (off-white)
knob 760-023-00
25k pot 130-004-02
page 2 of 2
AUX RET ASSIGN
button 760-108-00
switch 500-018-00
AUX RET SOLO
button 760-013-00
switch 500-012-00
AUX RETURNS (off-white)
knob 760-023-00
50k pot 130-012-00
TB - LEVEL
knob 760-023-00
50k pot 130-003-00
TB - DESTINATION
button 760-003-00
switch 500-005-00
TB - PH AND STUDIO
button 760-108-00
switch 500-005-00
RUDE RED LED
304-002-00
MONITOR SOURCES
button 760-003-00
switch 500-018-00
REAR PANEL
7 PIN CIRC male
400-045-00
37 PIN D-SUB female
400-047-00
*
NOTE: SUBMASTER/T APE OUTPUT & TAPE RETURN LEVEL SWITCHES ALSO REQUIRE -
MISCELLANEOUS:
Extrusion ARMREST
16−8, 24−E 551-006-00
24−8 551-007-00
32−8 551-008-00
METER BRIDGE MOUNTING KIT
(080-030-00 - includes instructions
and mounting hardware)
SUB /TAPE OUT*
XLR - male jack
400-223-00
SWITCH BUTTON EXTENDER P AR T#760-028-00
8 BUS OWNER'S MANUAL
820-007-00
ALLEN HEAD (HEX) SCREWS
(4-40 X 1/4) 700-011-00
METER LENS
780-002-00
STAND FASTENER KIT
no part # - includes 10 screws
qty 4 8-32X1/4 machine
qty 6 6-32X1/4 sheet
button 760-003-00
switch 500-012-00
8 BUS Power Supply OWNER'S
MANUAL, 820-006-00
24−E EXPANSION CABLE
640-004-00
POWER SUPPLY POWER SWITCH
16A, 500-006-00
END CAP SCREWS
FRONT (10-32X1 1/4) 700-016-00
BACK (10-32X3/4) 700-015-00
TAPE RETURN*
button 760--108-00
switch 500-018-00
1/4" - female jack
400-214-00
Meter Bridge INSTRUCTIONS
820-008-00
POWER SUPPLY FAN 770-001-00
DC POWER CABLE
040-013-00
LINE CORD 6' IEC 10A
USA (110V), 640-001-00
EURO (230V), 640-002-00
05/99
6
700-015-00
700-011-00
(top surface screws)
700-006-00
(bottom and side screws)
700-016-00
(long screws)
700-023-00
700-006-00
(both sides)
700-028-00
(w/o washer)
706-017-00
710-008-00
701-005-00
(XLR scre ws)
(screw)
(washer)
(short screw)
701-004-00
(each foot)
701-002-00
(top surface screws)
700-019-00
(Large Xformer screws)
(right side only)
700-019-00
(fan screws)
700-006-00
700-005-00
(star ground)
Version 1.0
6/95
7
8
PARTS LIST
8•Bus individual circuit boards
(parts list taken from schematics)
990-008-00 REV S..... Mic/Line Preamp Board.....................Pages 2-3
990-009-00 REV U.... Channel Board ................................... Pages 4-6
990-010-00 REV U.... Output Board ..................................... Pages 7-9
990-011-00 REV I ..... Meter Board........................................Page 10
990-012-00 REV S..... Jack Field Board ................................. Page 10
990-013-00 REV S..... Tape Output Board........................... Page 11
990-014-00 REV S..... Tape Input Board...............................Page 11
990-015-00 REV S..... Power Supply Board........................... Page 12
990-019-00 REV S..... Expander.............................................Page 13
990-020-00 REV C ... Power Distribution .............................. Page 13
990-021-00 REV S..... Expander Output ..............................Page 14
990-022-00 REV H.... Analog Meter Bridge.........................Page 15
990-023-00 REV F..... LED Meter ............................................ Page 16
Parts Numbering guide
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
A-1
990-008-00 REV S, Mic/Line Preamp Board
PART NO. DESCRIPTION VALUE REFERENCE DESIGNATORS
100-009-00 RESISTOR CF 22 5% R113 R213 R313 R413 R513 R613 R713
R813
100-027-00 RESISTOR CF 12 0 5% R121 R155 R221 R255 R321 R355 R421
R455 R521 R555 R621 R655 R721 R755
R821 R855
100-042-00 RESISTOR CF 51 0 5% R107-108 R207-208 R307-308 R407-408
R507-508 R607-608 R707-708 R807-808
100-050-00 RESISTOR CF 1K1 5% R2
100-080-00 RESISTOR CF 20K 5% R1 R118 R218 R318 R418 R518 R618 R718
R818
110-072-00 RESISTOR CF 9K1 5% R3-4
110-080-00 RESISTOR CF 20K 5% R150
111-017-00 RESISTOR CF 4.7 5% R103-104 R203-204 R303-304 R403-404
R503-504 R603-604 R703-704 R803-804
115-281-00 RESISTOR CF 82 5 1% R109-110 R209-210 R309-310 R409-410
R509-510 R609-610 R709-710 R809-810
115-331-00 RESISTOR CF 2K49 1% R111-112 R211-212 R311-312 R411-412
R511-512 R611-612 R711-712 R811-812
115-350-00 RESISTOR CF 3K92 1% R114-117 R119-120 R214-217 R219-220
R314-317 R319-320 R414-417 R419-420
R514-517 R519-520 R614-617 R619-620
R714-717 R719-720 R814-817 R819-820
115-373-00 RESISTOR CF 6K81 1% R101-102 R201-202 R301-302 R401-402
R501-502 R601-602 R701-702 R801-802
115-376-00 RESISTOR CF 7K32 1% R105-106 R205-206 R305-306 R405-406
R505-506 R605-606 R705-706 R805-806
211-001-00 CAPACITOR CERAMIC AXIAL 0.01 10% C3-11
211-008-00 CAPACITOR CERAMIC AXIAL 220 PF 10% C105-106 C205-206 C305-306 C405-406
C505-506 C605-606 C705-706 C805-806
220-002-02 CAPACITOR LYTIC RADIAL TAPE 47UF 10% C108-110 C208-210 C308-310 C408-410
C508-510 C608-610 C708-710 C808-810
220-003-02 CAPACITOR LYTIC RADIAL TAPE 47UF 10% C1-2 C103-104 C203-204 C303-304
C403-404 C503-504 C603-604 C703-704
C803-804
220-004-00 CAPACITOR LYTIC RADIAL 470UF 10% C107 C207 C307 C407 C507 C607 C707
C807
220-005-02 CAPACITOR LYTIC RADIAL TAPE 470UF 10% C12-13
300-001-00 DOIDE SIGNAL 1N4148 D101-104 D201-204 D301-304 D401-404
D501-504 D601-604 D701-704 D801-804
310-003-02 TRANSISTOR PNP, T&R 2SA1084 Q103-104 Q203-204 Q303-304 Q403-404
Q503-504 Q603-604 Q703-704 Q803-804
310-004-00 TRANSISTOR NPN MPSA06 Q1-2 Q101-102 Q201-202 Q301-302
Q401-402 Q501-502 Q601-602 Q701-702
Q801-802
320-001-00 I.C. LINEAR NJM 4560 U1-4
400-002-01 CONNECTOR XLR PC MTG VERT J101 J201 J301 J401 J501 J601 J701 J801
FEMALE
400-003-01 CONN. JACK 1/4” VERT PC MT J102-104 J202-204 J302-304 J402-404
W/LOCKWASHER J502-504 J602-604 J702-704 J802-804
400-013-00 CONNECTOR RTA 20P .100 X 2 J5
400-036-00 CONNECTOR RTA 40P .100 X 2 J4 J6
400-048-00 CONNECTOR RTA 7P .156 X 1 J14
400-056-00 CONNECTOR STR 20P .100 X 2 J12
400-059-00 CONN QUICK DISC 250 E4
A-2
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