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Design Information And History
Section:
Product(s):
History.SchDoc
M1535
5
5
Sheet
Of
PCB#:
Rev#:
Modified:
V06
File:
27/11/2014
NX25P-2
EML Rev#:
03
Tmp Rev:
V23
CHANGE HISTORY
POTENTIOMETERS AND KNOBS
LEADS AND PINS REFERENCE
DESIGN HISTORY AND INFORMATION
THIS SHEET CONTAINS A CHANGE HISTORY LOG, A LIST OF THE POTS & KNOBS AND A LEADS & PINS REFERENCE SECTION.
.
V01
FIRST PRODUCTION RELEASE. - ML
Modified schematic to reflect rework done on V01 boards. See power supply section. - ML
Added 5V6 zeners in series with the linear regulators. - ML
Moved C26 away from Q5. - ML
Moved C43 away from C42. - ML
Changed XLR connector J3 to YS#4140. - ML
Substituted YS#5255 (1u 63V) for 5254 (1u 63V). See PC for details. - ML
GND scheme changed (see PC for details)
R106 and R127 changed from 1K0 (7621) to 470R (#7856).
R109 and R125 changed from 33K (#7863) to 27K4 (#7636).
Tack on two diodes#6438 (1N4007) on U1 and U2 as per PC#8734 V05 and earlier version.
D25,D26 #6438 (1N4007) added across the output of 7815 and 7915 regulators.
.
.
V02
.
V03
V04
V04
V05
V05
V06
.
23-JAN-2013
13
10
7
4
1
9
11
12
8
#
2
3
5
6
VER#
DATE
DESCRIPTION OF CHANGE
.
03-JUL-2013
21-OCT-2013
20-DEC-2013
MAY-22-2014
NOV-13-2014
.
NOV-25-2014
15-APR-2013
25-APR-2013
.
PC#
.
8525
8518
8548
8579
8618
8632
8733
8734
8734
.
"STYLE_P32"
P1
P2
P3
P4
8653
4434
4434
4435
4432
.
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.
.
8653
8653
8653
.
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LINE IN LEVEL
REF
POT#
FUNCTION
KNOB#
MIC LEVEL
.
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.
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.
TREBLE
BASS
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STYLE
P32
P32
P32
P32
.
.
.
.
.
.
.
.
.
IRFP140N (YS#6931)
TO-247AC
D S
IRFP9140N (YS#6932)
G
2SD2560 (YS#6805)
TO3P
2SB1647 (YS#6812)
B C E
TO92
E B C
2N6517 (YS#6854)
