RMX Series Technical Service Manual 33
Gray shading indicates
signal path
NOTES: UNLESS OTHERWISE SPECIFIED
A
B
8
7
6
5
8
6
7
5
C
D
QSC AUDIO PRODUCTS.
WITHOUT EXPRESS WRITTEN CONSENT FROM
BE DISCLOSED, REPRODUCED OR USED
OF QSC AUDIO PRODUCTS, THAT MAY NOT
INFORMATION WHICH IS THE PROPERTY
THIS DOCUMENT CONTAINS PROPRIETARY
C
D
1
4
3
2
REV
SH
A
1
DWG NO.
B
2
3
4
SIZE FSCM NO. DWG NO.
SCALE CAD FILE NO. SHEET
REV
D
26
J1:26
25
J1:25
26
J2:26
25
J2:25
+IN_B
GND
+IN B
-IN B
24
J1:24
24
J2:24
-IN_B
BRIDGE
MONO
(6, 7)
7
17
SW1:7
FILTER BYPASS B (8)
FILTER 30 HZ (9)
CLIP LIM B (10)
9
19
SW1:9
10
20
SW1:10
GND
CLIP LIM B
8
18
SW1:8
FILT SEND B (POT)
FILT CAP B
FILT BYP B
5
15
SW1:5
4
14
SW1:4
3
13
SW1:3
2
12
SW1:2
1
11
SW1:1
FILT-SEND A
FILT-BYP A
GND
FILTER 30 HZ (2)
FILTER BYPASS A (3)
CLIP LIM A (1)
PARALLEL
INPUTS
(4, 5)
6
16
SW1:6
BR MONO FEED
BR M SEND (HI-SIG A)
8
J2:8
9
J2:9
10
J2:10
11
J2:11
12
J2:12
GND
8
J1:8
9
J1:9
10
J1:10
11
J1:11
12
J1:12
BR MONO FEED
13
J1:13
13
J2:13
14
J1:14
GND
14
J2:14
BR_RET
C132
47P-50V
^C_1206
10.0K
^R_0805
R103
C102
.1-50V-10%
^C_1206
3
+
8
7
5
1
4
-
2
U10:1
LM13600M
11
6
P1
A1
16
J2:16
BR_CUT
15
J2:15
BR_BAL
16
J1:16
15
J1:15
17
J2:17
17
J1:17
18
J2:18
18
J1:18
GND
19
J1:19
20
J1:20
21
J1:21
22
J1:22
23
J1:23
23
J2:23
22
J2:22
21
J2:21
20
J2:20
19
J2:19
F_BYP_B
F_SND_B
F_30_B
CLIP_B
-14V
C130
100p-50V
^C_1206
R197
100
^R_0805
A1
A1
A1
C125
100-16NP
C105
100-25V
R111
820
^R_0805
R138
4.7K
^R_0805
R104
150K
^R_1206
A1
A1
A1
C131
.001-5%
R114
4.7K
^R_0805
R107
^R_0805
39K
R117
24K
^R_0805
R115
820
^R_1206
C104
.1-50V-10%
^C_1206
R109
100
^R_0805
R108
7.50K
^R_0805
R110
100
^R_0805
Q100
3906
^Q_BJTP_SOT-23
CLIP CH 1
-15V_A
R121
24K
^R_0805
R127
100
^R_0805
D103
1N4148
^D_SOT-23
D100
15V-1W
C113
220-25V
LD100
RED
P1
SPEAKER BUS -- AFTER FUSE
R120
390
^R_0805
R194
12K-1W
R123
23.2K-1%-1/2W
R122
23.2K-1%-1/2W
R126
1K
^R_0805
R167
464K
^R_1206
R195
2.00K
^R_0805
C179
.0033
1
3
2
J201
FILT-CAP A
CH2_+IN
CH2_-IN
TIP
GND
RING
CHASSIS_GND
FIVE POSITION BARRIER STRIP
1
J5:1
3
J5:3
2
J5:2
S
T
R
J202
CLIP-LIM A
C2
470p 5%
^C_1206
C4
470p 5%
^C_1206
5
J5:5
4
J5:4
1
3
2
J101
S
T
R
J102
TIP
RING
CH1_+IN
CH1_-IN
C1
470p 5%
^C_1206
C3
470p 5%
^C_1206
1
J2:1
2
J2:2
3
J2:3
GND
+IN A
-IN A
1
J1:1
2
J1:2
3
J1:3
R101
10.0K
^R_0805
R100
10.0K
^R_0805
R102
1K
^R_0805
C101
180p-5%
^C_0805
4
J2:4
FILT-BYP A
FILT-SEND A
FILT-CAP A
SW TO GND FOR CLIP LIM
5
J2:5
6
J2:6
7
J2:7
5
J1:5
GND
4
J1:4
6
J1:6
7
J1:7
C103
180p-5%
^C_0805
A1
26-LINE RIBBON CABLE
CONNECTS BREAKAWAY
INPUT PCB TO MAIN PCB
CHANNEL-1
R173
150K
^R_1206
R178
150K
^R_1206
R190
2.00K
^R_0805
C172
.0033
R177
12K-1W
A1
C109
.15-5%
C108
.15-5%
C107
.22-5%
CW
CCW
W
R112
10K
R113
274
^R_0805
R106
10.0K
^R_0805
R116
820K
^R_1206
R196
270
^R_0805
+14V
10K LINEAR 3B
RIGHT ANGLE POT
ROUTE THIS GROUND
TO "P" GND AT
HEAT SINK COMMON
BETWEEN CH A AND CH B
ROUTE THIS GROUND
TO "A" GND AT
JI-2 INPUT CABLE
CHANNEL 1 GAIN
SPEAKER BUS -- BEFORE FUSE
R20
3.3-1W
R_RES1W
R105
10.0K
^R_0805
C111
27p-200V-COG
^C_1206
3
+
2
-
1
NE5532
U101:1
C106
47-10NP
A1
A1 P1
+15V_A
R166
464K
^R_1206
D104
1N4148
^D_SOT-23
Q101
3904
^Q_BJTN_SOT-23
R125
47K
^R_1206
D102
1N4148
^D_SOT-23
C110
27p
^C_0805
C114
0.0015u, 250V
^C_1206
R124
75
^R_0805
8
4
5
+
6
-
7
NE5532
U101:2
D101
15V-1W
C112
220-25V
P1
NEG
CURRENT
LIMIT
POS
CURRENT
LIMIT
D105
1N4148
^D_SOT-23
C115
0.0022u, 10%
^C_1206
D113
1N4148
^D_SOT-23
R130
820
^R_1206
D107
5.6V-.25W
D108
1N4934
D109
1N4934
CW
CCW
W
2.2K
R139
^Q_BJTN_SOT-23
3904
Q102
R128
10K
^R_0805
SIG CH 1
FP
+110_A
^D_SOT-23
1N4148
D112
R129
^R_0805
1.5K
YELLOW
LD101
0.01
C181
8.2K-5W
R118
8.2K-5W
R119
Q103
2SA1943
R136
22-1W
P1
R156
0.22-3W
R181
1.5-2W
R152
0.22-3W
R148
0.22-3W
R142
0.22-3W
Q107
2SA1943
Q109
2SA1943
Q111
2SA1943
D117
1N4004
D116
1N4148
^D_SOT-23
R_RES1W
R146
3.3-1W
MJE15032
Q105
R198
2.2K-5W
C119
.022
P1
P1
10V-1N4740A
D174
D170
3.9V
1N4148
^D_SOT-23
D171
R179
4.7K
^R_0805
R174
4.7K
^R_0805
R172
470K
^R_0805
R171
5.90K
^R_0805
R175
3.01K
^R_0805
2
3
4
V-
1
GND
8
V+
5
BAL
6
BAL/STR
7
^LM311-SMT
U170
^U_LM311
.36W at full clip
POS STEP DRIVER
TO -VMED
C170
47pF-50V-5%
^C_0805
^Q_BJTP_SOT-23
3906
Q172
3904
Q171
^Q_BJTN_SOT-23
D173
1N4148
^D_SOT-23
R170
47
^R_0805
RFZ44
Q170
100-25V
C173
C171
10-35V
R176
12K
^R_0805
+110_A
C120
12000-63V
R180
5.1K-5W
R164
100-1/4W
C129
22-25NP
R160
5.6-2W
L100
2uH
E100
JP14
F100
25A-125V
C121
12000-63V
SPEAKER CONNECTORS
ON BREAK-AWAY PCB.
CONTINUED, SHEET 2
SPEAKER OUTPUT PCB
CHANNEL 1
SEE SH 3
CT_A
J103 +
R163
10-1/4W
D119
2N5064
R165
15K-1W
2N5064
D120
C174
0.1-250V
D175
MUR1520
+55_A
DC FAULT
PROTECTION
MT1
MT2
G
Q113
MAC224
P1
BR-POS
NEG STEP DRIVER
R192
150K
^R_1206
R186
150K
^R_1206
2
3
4
V-
1
GND
8
V+
5
BAL
6
BAL/STR
7
^LM311-SMT
U171
^U_LM311
C178
.1-50V-10%
^C_1206
R193
4.7K
^R_0805
R187
4.7K
^R_0805
R185
470K
^R_0805
1N4148
^D_SOT-23
D177
R191
2.2K
^R_0805
R189
47
^R_0805
^Q_BJTN_SOT-23
3904
Q173
Q175
3906
^Q_BJTP_SOT-23
RFZ44
Q174
C177
47pF-50V-5%
^C_0805
C180
100-25V
D178
12V-1W-1N4742A
R137
22-1W
8.2K-5W
R133
8.2K-5W
R135
R183
47K
^R_0805
D111
^D_SOT-23
1N4148
R184
5.90K
^R_0805
C176
47pF-50V-5%
^C_0805
-110_A
FP
NTC
BIAS
D106
1N4148
^D_SOT-23
R132
820
^R_1206
D110
5.6V-.25W
CW
CCW
W
R131
100
Q104
2SC5200
50
R134
C116
.022
CW
CCW
W
R140
2.2K
D114
1N4148
^D_SOT-23
D115
1N4148
^D_SOT-23
R147
3.3-1W
R_RES1W
MJE15033
Q106
Q108
2SC5200
Q110
2SC5200
Q112
2SC5200
D118
1N4004
R157
2.2K-5W
R158
2.2K-5W
P1
R159
0.22-3W
R182
1.5-2W
R153
0.22-3W
R149
0.22-3W
R143
0.22-3W
D176
MUR1520
R188
5.1K-5W
C123
12000-63V
.1-250V
C175
R23B
68K
^R_1206
R23A
68K
^R_1206
R22B
68K
^R_1206
R22A
68K
^R_1206
SP_B
BR_BAL
-55_A
R155
12-5W
R154
12-5W
R162
12-5W
R161
12-5W
E101
JP13
C122
12000-63V
5-WAY
BINDING
POST
CH 1
WIRES TO
BREAK-AWAY
SPEAKER
OUTPUT PCB
J103 -
C126
0.068-250V
C124
0.068-250V
P1
2+
1+
2-
1-
J100
SPEAKON
BR-NEG
P1
R24
3.01K
^R_0805
-110_A
NONE
SH-002451-00
SH-002451-00
PLOT DATE:
P:GPE
PRODUCTS\PRMX-SERIESQSC245
0
4
4
2
OF
Thu Sep 07, 2000
42
7.9 RMX 2450 Schematic Diagram 1 of 3
Channel 1
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