Product
Date:
Filename:
PCB#
of
Sheet
Rev:
3
3
4V0
M1231V400sch.sch2002
NX750P
Mon May 11, 2009
M1231
NX750P
Product
Date:
Filename:
PCB#
of
Sheet
Rev:
3
3
4V0
M1231V400sch.sch2002
NX750P
Mon May 11, 2009
M1231
NX750P
-22V
+22V
-15V
+15V
+120V
PSGND
1N5402
D56
1N5402
D52
-44V
C
123:A
180V
3300U
1N5402
D55
PSGND
3392
GRN
GND
W26
3392
BLK
XFMR BLK
W10
3392
GRY
41Vrms
W18
3392
RED
20Vrms
W17
3392
VIO
105Vrms
W6
4007
D50
SILENT
PSGND
MR752
D61
WHT
-148V
W24
IGND
GRN
INPUT GND
W16
1.0W
1K8
R187
.
S4
DPDT Switch
3392
WHT
AC WHT
W21
3392
BLK
AC BLK
W9
3392
BLK
XFMR BLK
W20
N.A.
3392
VIO
105Vrms
W23
3392
YEL
CENTER TAP
W14
3392
RED
20Vrms
W13
3392
GRY
41Vrms
W12
CE
1N5402
D58
100V
100N
C116
BLK
SILENT
W25
63V
C110
4U7
1N5402
D57
1N5402
D51
1N5402
D54
MR752
D59
63V
C115
2200U
GRN
PSGND
W15
MR752
D53
+44V
-120V
PSGND
C
63:A
180V
3300U
1300UH
L5
6492
#2479
F 5A
100V
C109
100N
63V
C103
4U7
1N5402
D60
63V
C104
2200U
MR752
D48
YEL
+148V
W7
IEC_RECT
CE
CH1337
CH1337
CH1337E
N.A.
100V
C40
100N
250V
4N7
C112
R61
2487
T7.0
4007
D49
N.A.:CH1337
CE: CH1337E
FUSE
F1
FAST BLOW
50V
C111
2200U
OUT
IN
GND
MC7915CT
6871
{Watts}
.
U31
TO220
RED
-28V
W19
OUT
IN
GND
MC7815CT
6872
{Watts}
.
U30
TO220
BLU
+28V
W11
ORN
+57V
W8
FUSE F1
250V
C106
680N
R98
2487
T7.0
250V
C102
100N
#2465
F 7A
#2482
F3.15A
#2465
F 7A
3392
GRN
PSGND
W27
FUSE
N.A.: #2465 F 7A
CE: #2482 F3.15A
50V
C105
2200U
BRN
-57V
W22
8
9
1
2
3
4
5
6
7
L6
CH1337
WITHOUT CROWBAR WITH CROWBAR
CH1337E
TRANSFORMER
TO POWER AMP PCB
CHASSIS GROUND
MADE THROUGH
1/4" INPUT JACKS
POWER SUPPLY
KNOB
PART#
FUNCTION
REF
MODEL(S):-
{NEW}
NX750P
POT LIST
#9916
#9915
#9917
#9915
#9917
N
N
N
N
N
N
N
GREY
RED
GREEN
RED
GREEN
K
K
K
K
K
K
K
#4434
#4432
#4435
#4432
#4434
P
P
P
P
P
P
P
MAIN GAIN
MIC GAIN
BASS CONTROL
CD/LINE GAIN
TREBLE CONTROL
F
F
F
F
F
F
F
P1
P2
P3
P4
P5
R
R
R
R
R
R
R
XC85
9
10
11
12
13
MODEL(S):-
DATE
VER#
DESCRIPTION OF CHANGE
#
1
2
3
4
5
6
7
8
PC#7167, ENLARGE HOLE SIZE FOR #3522
37K4 1% 1/4W. REPLACE R78 WITH #4611
V3.01
.
FEB 07 2007
.
PC#7052:GT:Q14&Q15 6914 IRFP350->6967 IRFP23N50LPBF
PC7003:GT:R9 #4979 15K->#6104 2K2, ADD 8921 WASHER
PC#6979:GT:R6&R23 #4815 12R->#2038 11R FUSIBLE
C102 FROM 22N #6435 TO 100N #5242
FIVE LEG #5862 3300U & FORCE UPDATED BOARD (M.R)
CHANGED POWER SUPPLY CAPACITORS TO NEW
PC#6772: REV. WIRE COLORS ON WOOFER & HORN (GT)
.
.
.
.
.
V2.00
.
OCT-31-2005
SEP-21-2005
.
.
MAY30th 2005
NOV-26-2004
DEC-13-2005
M1231.PCB_DATABASE_HISTORY
NX750P
AUGUST 2004V1.00
MADE FROM M1158-V.200
AH, PC#7136, REPLACE R77, R81 AND R82 WITH #4686
.
.
V2.01
AUG-16-2006
OCT 16 2006 V3.00
PC#7178, Updated limiter for RoHS compliance
AH, PC#7205, C37 100N #5212 TO 470P #5201
9
10
11
12
13
MODEL(S):-
DATE
VER#
DESCRIPTION OF CHANGE
#
1
2
3
4
5
6
7
8
N
ADDED. X1 REF REMOVED IN LAYOUT
PC#7356, 7701, AND 7757 - PAD UPDATE, XLR MTG HOLE
V
V
V4.00
11-MAY-2009
D
D
BA WILL PUT 33K,470R,100N AND 10U AS SHOWN
PC#7453, ONLY FOR NA. REMOVE C19 AND R89 FROM AI.
10U #5281 C19 1U #5254 TO 4U7 #5258
56K #4835, R89 1K #4981 TO 56K #5018, C23 22U #5631TO
PC#7261, N.A. VERSION CHANGE R152 150K #4839 TO
D34 AND D43 1N4148 #6825 TO BAT 85 #6733
ONLY M1231A CE VER. R157 10K #4940 TO 3K3 #4938
.
V3.03
.
.
V3.02
.
.
.
01-FEB-2008
.
.
22-AUG-2007
.
.
R177 4K7 #4982 TO 15K #4979
.
.
M1231.PCB_DATABASE_HISTORY
NX750P
.
.
PC#7398, ADD CROWBAR CIRCUIT AND CHANGE FUSE
AT THE SAME TIME SEE PRODUCTION NOTE
.
.
Summary of Contents for NX750P -
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Page 10: ...ONLY NORTH AMERICA ONLY NORTH AMERICA ...
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Page 20: ...NX750P EXPORT CE 230V CH1337E MAR 23 05 BLUE BROWN ...