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THIS DOCUMENT CONTAINS PROPRIETARY
INFORMATION WHICH IS THE PROPERTY
OF QSC AUDIO PRODUCTS, THAT MAY NOT
BE DISCLOSED, REPRODUCED OR USED
WITHOUT EXPRESS WRITTEN CONSENT FROM
QSC AUDIO PRODUCTS.
D
8
7
U-I CORE POWER TRANSFORMER
NOTE SPLIT SECONDARY WIRING
FROM EACH LEG TO EACH CHANNEL
AC VOLTAGE
PROGRAMMING
TERMINALS
!
120V
R21
BRN
1 OHM 30A
AC INPUT, HIGH (ALL)
QUICK
100V
120V
240V
CONNECT
20V
PC-MTD
BLU
TRANSFORMER PRI LEADS
TABS
0V
BRN
BRN
BRN
J2A
BLK
J3A
GRY
GRY
-
COIL ONE
BLK
BLU
BLU
J4A
C
COIL TWO
-
-
BLK
J5A
120V
GRY
J6A
-
-
GRY
J7A
WHT
RED
RED
20V
RED
0V
WHT
BLU
BLK
-
J8A
J9A
RED
WHT
WHT
AC INPUT, LOW (ALL)
!
CIRCUIT BREAKER
!
USA: 15A-125V
EUROPE: 7.5A-250V
JSW
JP12
IEC AC INLET
TO POWER SWITCH
LINE
1
JP10
2
NEUT
GND
3
20 VAC TO FAN POWER RECTIFIER
B
A
NOTES: UNLESS OTHERWISE SPECIFIED
7
8
32
6
RECTIFIERS BR100, 200 AND C127-227 ARE
LOCATED OFF THE MAIN PCB, MOUNTED
TO CHASSIS.
!
J21:3
J157:3
3
3
!
E9
E13
F100
E1
12A-125V
BR100
400V-25A
E2
C127
E14
E10
E3
1
4
+
-
0.22-200V
E4
!
E15
E11
F200
E5
BR200
12A-125V
400V-25A
E6
E16
E12
E7
C227
1
4
+
-
0.22-200V
E8
MAINTAIN FULL
PRI-SEC CREEPAGE
BR1
200V-1A
3
4
AC1
AC2
R1
1.1 AMP
1000-35V
7.8 RMX 1450 Schematic Diagram 3 of 3
Power Supply
6
5
4
MUTING AND THERMAL PROTECTION.
D1
R10
+VCC_A
150K
1N4004
^R_1206
LD1
GRN
PILOT
R27
LED
220K
^R_1206
-VCC_A
R2
15K-2W
R3
R6
+VCC_B
1.0M
1.0M
Q1
^R_1206
^R_1206
D4
C7
300V-.2A
4.7-250V
R5
1N4148
15K-2W
D5
R26
220K
-VCC_B
1N4148
^R_0805
MAINTAIN FULL
PRI-SEC CREEPAGE
D7
1N4148
D6
J157:2
2
D2
D3
1N4148
J21:2
1N4148
1N4148
2
!
J104:8
8
2500V
U2
J204:8
HI-POT
8
4N29
R4
R7
60C 100 OHM
60C 100 OHM
ATTACH TO HS-2
ATTACH TO HS-1
TH_A
J21:1
J204:9
9
1
SEE SH 1
J104:9
J157:1
9
1
28V PRI-SIDE DC FAN SUPPLY
C6
5
4
3
2
+14V
+15V_B
D8
D13
R18
220K
1N4004
15V
+15V_A
^R_1206
2
J204:2
C8
2
47-50V
J104:2
Q9
D12
Q4
P1
3904
P1
1N4004
3906
Q5
C11
MPSW05
.1-5OV
P1
D14
D11
Q7
3906
1N4148
1N4004
J104:1
1
J204:1
1
-15V_A
D10
R15
D9
1N4004
470K
-14V
1N4148
-15V_B
P1
^R_1206
J18:1
1
+
TO DC FAN
J18:2
-
2
Q3
R17
TIP31C
120-2W
SIZE
FSCM NO.
D
SCALE
NONE
3
2
1
D
BR_CUT
Q8
3904
J104:3
3
J204:3
3
R25
BR_CUT
47
^R_0805
Q6
3906
C
B
A
DWG NO.
REV
SH-001451-00
4
CAD FILE NO.
SHEET
RMX1450-4.sch
3
OF
3
PLOT DATE:
1
Thu Sep 07, 2000
QSC Audio Products, Inc.
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