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M1231.PCB_DATABASE_HISTORY
MODEL(S):-
NX750P
#
DATE
VER#
DESCRIPTION OF CHANGE
1
AUGUST 2004 V1.00
MADE FROM M1158-V.200
2
NOV-26-2004
.
PC#6772: REV. WIRE COLORS ON WOOFER & HORN (GT)
3
MAY30th 2005 V2.00
CHANGED POWER SUPPLY CAPACITORS TO NEW
4
.
.
FIVE LEG #5862 3300U & FORCE UPDATED BOARD (M.R)
5
.
.
C102 FROM 22N #6435 TO 100N #5242
6
SEP-21-2005
.
PC#6979:GT:R6&R23 #4815 12R->#2038 11R FUSIBLE
7
OCT-31-2005
.
PC7003:GT:R9 #4979 15K->#6104 2K2, ADD 8921 WASHER
8
DEC-13-2005
.
PC#7052:GT:Q14&Q15 6914 IRFP350->6967 IRFP23N50LPBF
9
JUN-29-2006
V2.01
AH, PC#7136, REPLACE R77, R81 AND R82 WITH #4686
10
.
.
37K4 1% 1/4W. REPLACE R78 WITH #4611
11
OCT 16 2006
V3.00
PC#7178, Updated limiter for RoHS compliance
12
.
.
PC#7167, ENLARGE HOLE SIZE FOR #3522
13
FEB 07 2007
V3.01
AH, PC#7205, C37 100N #5212 TO 470P #5201
M1231.PCB_DATABASE_HISTORY
MODEL(S):-
NX750P
#
DATE
VER#
DESCRIPTION OF CHANGE
1
.
.
R177 4K7 #4982 TO 15K #4979
2
.
.
ONLY M1231A CE VER. R157 10K #4940 TO 3K3 #4938
3
.
.
D34 AND D43 1N4148 #6825 TO BAT 85 #6733
4
22-AUG-2007 V3.02
PC#7261, N.A. VERSION CHANGE R152 150K #4839 TO
5
.
.
56K #4835, R89 1K #4981 TO 56K #5018, C23 22U #5631TO
6
.
.
10U #5281 C19 1U #5254 TO 4U7 #5258
7
01-FEB-2008
V3.03
PC#7453, ONLY FOR NA. REMOVE C19 AND R89 FROM AI.
8
.
.
BA WILL PUT 33K,470R,100N AND 10U AS SHOWN
9
.
.
PC#7398, ADD CROWBAR CIRCUIT AND CHANGE FUSE
10
.
.
AT THE SAME TIME SEE PRODUCTION NOTE
11
11-MAY-2009
V4.00
PC#7356, 7701, AND 7757 - PAD UPDATE, XLR MTG HOLE
12
D
V
ADDED. X1 REF REMOVED IN LAYOUT
13
02-NOV-2010 V5.00
ADDED MOLEX CONNECTORS FOR TRANSFORMER.
1
V05
ELIMINATED THE NEED TO TACK ON PARTS.
2
02-FEB-2011
V05
PC8185: CHANGE #3453 TO #4100
3
03-NOV-2011 V06
PC8244 - CHANGED PADS ON 3696 RELAY - ML
4
.
.
PC8326 - MOVED Q16, C97 & C98.
5
.
.
ADDED TRACE BETWEEN ADJACENT
6
.
.
PADS OF C95 & C96. - ML
7
.
.
PC8325 - UPDATED HOLE SIZES FOR CONN 4151 - ML
8
14-NOV-2011
.
FIXED PSU NET NAMES AS PER PAUL B. - ML
9
31-AUG-2012 V07
PC8448: #3392, #4100 new pattern, move DS to BOT GG
10
16-JUL-2013
V08
PC8545: Moved vias from under resistors. - ML
11
.
.
PC8553: Removed pattern for RoHS limiter board. - ML
12
01-APR-2014
.
PC8624: New faceplate / Changed LEDs to hand. - ML
13
15-DEC-2014
V09
PC#8734:D28 and D36 added to 7815,7915 regulators O/P.
SEE LAYOUT DIAGRAM
LEADS & PINS REFERENCE
74HC86N (YS#6605)
IR2110 (YS#6887)
DIP14
NE5532N (YS#6884)
74HC74N (YS#6964)
MC33078P (YS#6840)
2N5401 (YS#5108)
GG
2N5551 (YS#5107)
DIP14
MPSA06 (YS#5103)
MPSA13 (YS#5105)
J111 (YS#5119)
MPSA92 (YS#5114)
D
S
G
TO-92
MJE340 (YS#6873)
BC550C (YS#5101)
BC560C (YS#5102)
C
B
E
TO-92
74HC14N (YS#6603)
MC33079P (YS#6804)
DIP14
DIP14
DIP14
NSL-32SR2 (YS#6858)
LM311 (YS#6640)
OPTO
IRFP23N50L (YS#6967)
DIP8
DIP8
IRFP9140N (YS#6932)
IRFP140N (YS#6931)
BDX54C (YS#6911)
BDX53C (YS#6912)
TO-247
TO-220
E B C
B
C
E
G
D
S
TO-92
MC7815CT (YS#6872)
MC7915CT (YS#6871)
TO-220
TO-220
E
C
B
TO-126
I
G
O
G
I
POTENTIOMETERS AND KNOBS
M1231 - POTS LIST
MODEL(S):-
NX750P
REF
FUNCTION
PART#
COLOR
P1
MAIN GAIN
#4434
GREY
P2
MIC GAIN
#4432
RED
P3
BASS CONTROL
#4435
GREEN
P4
CD/LINE GAIN
#4432
RED
P5
TREBLE CONTROL
#4434
GREEN
R
F
P
K
R
F
P
K
R
F
P
K
R
F
P
K
R
F
P
K
R
F
P
K
R
F
P
K
O
KNOB
#9916
#9915
#9917
#9915
#9917
N
N
N
N
N
"STYLE_P32"
N
N
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