Mackie SR24 4 User manual

SR24•4
4 BUS MIXING CONSOLE
SERVICE MANUAL
1995, 1999MACKIEDESIGNS,INC.
820-175-00

2
SERVICE ON THIS EQUIPMENT IS TO BE PERFORMED BY
EXPERIENCED REPAIR TECHNICIANS ONLY

3
INTRODUCTION
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
MackieDesigns, Service Technical Assistance, isavailable 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.
SERVICE ON THIS EQUIPMENT IS TO BE PERFORMED BY
EXPERIENCED REPAIR TECHNICIANS ONLY
CONTENTS
INTRODUCTION .................................................................................3
Technical Support ........................................................................3
Disclaimer.......................................................................................3
BLOCK DIAGRAM .............................................................................4
QUICK PARTS.................................................................................. 5-6
FOLD-OUT SECTIONS (Schematics and PCB layouts)
Master Board .......................................................................... 49-1
Power Supply .......................................................................... 51-1
Channel Board ....................................................................... 50-1

4
•
•• • ••
•
•
•
••
•
••
••
•
•
••
•
•
•
•
•
•
••
•
••
•
••••••
•
••
•
•
•
•
•
•
•
•
•
•
•
• •
•
•
••
•
•
•
•
•
•
•
••••••
•
•
•
•
•
•
•
•
••
•
••
•
•
•
•
•
•
•• ••
•
•
•
•
•
•
•
•
•
•
•
•
• •
• •
•
••
•
•
•
••
•
•
•
•
•
••
••••
•
•• ••
•
•
•
•
•• •
•
•
•
••
•
•
••••
•
•
•
•
•
•
•
12
3
TRIM: MIC GAIN- +10 to +60 dB LINE GAIN- -10 to +40 dB
LO CUT
MUTE
INSERT -20 dB LED
EQ
LO MID HI
80 8k 12k
100-
GAIN
FREQ GAIN
GAIN
FADER
PAN
O/L LED ASSIGN
SWITCHES
1-2
3-4
L-R
SOLO IN
PLACE
PFL
LOGIC
MUTE LED
(STEADY)
SOLO LED
(FLASHING)
AUX 1
AUX 2
AUX 3
AUX 4
AUX 5
AUX 6
PRE
MONO
INPUT
CHANNEL
(1 of 20)
BOLD LINES INDICATE
SIGNAL PATH FROM MIC
INPUT TO LEFT MAIN OUTPUT.
LEFT
(MONO)
RIGHT
TRIM
-20dB
LED
MUTE
LO LO- HI- HI
MID MID
LO LO- HI- HI
80 800 3k 12k
MID MID
O/L
LED
FADER
LINE GAIN-
-20 TO +20dB
+
-
+
-
+
-
MUTE LED
(STEADY)
SOLO LED
(FLASHING
AUX 1
AUX 2
AUX 3
AUX 4
AUX 5
AUX 6
PRE
STEREO
INPUT
CHANNEL
(1 OF 2)
MACKIE SR24•4 BLOCK DIAGRAM Rev. 1.6 4/15/97
STOPLIGHT EXIT 27B
316 GLENDALE (KNOCK FIRST)
TALKBACK
XLR INPUT LEVEL TB TO AUX 1-2
TB TO L-R MIX
1-23-4 L-R/SUBS LEVEL AUX RET 4 IN
AUX RET 3 IN
AUX RET 1 (2) IN
LEVEL
LEVEL
SOLO
SOLO LED
AUX
SEND
(1 OF 6)
AUX 1
OUTPUT
+
-
+
-
+
-
+
-
+
-
+
-
L
L
L
R
R R
L
R
PHONES OUTPUTS
PHONES
AMPS
RELAY
AUX SEND 1 (2)
SOLO
LEVEL
PFL/SIP
LEVEL RUDE SOLO LED
TAPE TO
MONITOR
L
R
CONTROL ROOM OUT
SOLO RELAY
TAPE IN
R MIX
L MIX INSERTS FADER
RIGHT XLR OUT
LEFT XLR OUT
MONO XLR OUT
RIGHT OUT
R
L
TAPE OUT
LEFT OUT
MONO
LEVEL
SUB
OUT
1
SUB
OUT
5
FADER
SUB OUT 1 (1 OF 4)
ASSIGN
TO L-R
PAN
TAPE TO L-R
SOLO
PFL
LOGIC
GAIN
AIR
16kHz
MIC
IN
LINE
IN
+22
+10
+7
+4
+2
0
-2
-4
-7
-10
-20
-30
-40
METERS
SUB 1
SUB 2
SUB 3
SUB 4
AUX 1
AUX 2
AUX 3
AUX 4
AUX 5
AUX 6
L MIX
R MIX
SOLO L
SOLO R
PFL
LOGIC
•
Vp
•
•
••
•
•
SOLO
•
∑
LEVEL
ØdBu=Ø VU
∑
∑
•
∑
∑
∑
∑
∑
•
•
∑
∑
MONITOR LEVEL
1
2
3
1
2
3
1
2
3
•
•
•
∑
∑
∑
•
•
•
1-2
3-4
L-R
SOLO IN
PLACE
PFL
LOGIC
•
80 800 3k 12k
•
•
••
•
PAN
•
INSERT
•
•
•
•
PHANTOM POWER
(GLOBAL SWITCH)
MACKIE
MIC PREAMP
75Hz HPF

5
QUICK PARTS
GAIN TRIM knob 760-048-01 50KGpot 130-061-02
AUX
(pre)
button 760-003-00 switch 500-018-00
AUX SENDS(red) knob 760-048-02 50KG pot 130-003-02
EQsection (blue) all knobs 760-048-03 50KBpot 130-066-02
MUTE button 760-011-00 switch 500-018-00
FADER knob 760-037-01 50KDpot 130-032-00
BALANCE(dark grey) knob 760-048-04 656 pot 130-065-02
BUS ASSIGN button 760-003-00 switch 500-018-00
SOLO button 760-013-00 switch 500-012-00
REDLEDS 304-001-00
FADER knob 760-037-01 10KDpot 130-031-00
L/RASSIGN button 760-013-00 switch 500-018-00
AIREQ CONTROL knob 760-048-03 10KB pot 130-022-02
PHONES/CRLEVEL knob 760-048-03 50KG pot 130-061-02
TALKBACKASSIGN buttons 760-013-00 switchs 500-012-00
YELLOWLED 304-003-00 TALKBACK LEVEL knob 760-048-01 50KB pot 130-002-02
SOLOMODE button 760-003-00 switch 500-018-00
SOLOLEVEL knob 760-048-01 50KGpot 130-061-02
AUX SENDS (red) knob 760-048-02 50KG pot 130-003-02
EQsection (blue) all knobs 760-048-03
Mid EQ 10KBpot 130-022-02
MIDFreq 500KCpot 130-064-02
HI/LOEQ 50KBpot 130-002-02
AUX
(pre)
button 760-003-00 switch 500-018-00
PAN (dark grey) knob 760-048-04 656 pot 130-065-02
MUTE button 760-002-00 switch 500-018-00
SOLO button 760-013-00 switch 500-012-00
BUSASSIGN button 760-003-00 switch 500-018-00
FADER knob 760-037-01 10KDpot 130-031-00
REDLEDS 304-001-00
GREENLED 304-004-00
GAIN TRIM knob 760-048-01 5KZYpot 130-030-02
LO-CUT button 760-003-00 switch 500-018-00
TAPERET.TO PH / CR button 760-003-00 switch 500-018-00
TAPERET.TO MAIN MIX button 760-003-00 switch 500-018-00
Exploded view - see next page
SUBSOLO button 760-013-00 switch 500-012-00
05/99
END CAP - LEFT
760-045-20
ENDCAP -RIGHT 760-045-10
1/4" JACKS
400-214-00 400-223-00
XLR JACKS

6
RUDESOLOLITE
304-006-00
AUXSENDS
knob 760-048-02
50KG pot 130-003-02
AUX SEND SOLOS
button 760-011-00
switch 500-012-00
AUXRETURNS
knob 760-048-02
50KGpot 130-061-02
AUX RET.SOLO
button 760-011-00
switch 500-012-00
AUXRET.#4ASSIGN
button 760-003-00
switch 500-018-00
AUX RET TO AUX SOLOS
knob 760-048-01
50KGpot 130-003-02
TAPE RET.LEVEL
knob 760-048-01
50KGpot 130-061-02
BNC
400-010-00
REDLEDS
304-001-00
05/99
QUICK PARTS