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2
3
A
B
CHANGE HISTORY
#
DATE
VER#
PC#
DESCRIPTION OF CHANGE
1
08-JAN-2014
V01
.
FIRST PRODUCTION RELEASE
2
04-FEB-2014
V01
8624
NEW FACEPLATE / CHANGED LEDS TO HAND INSERTED + 8580 SPACER. - ML
C
3
12-SEP-2014
V02
8683
Replace +15V_LS analog power supply. GG
4
09-JAN-2015
V03
8724
FIXED COMMENT ON D6 TO EQUAL VALUE - JF
5
.
.
8734
ADDED 1N4007 DIODES D16 & D18 ACROSS +15V/-15V OUTPUTS - JF
6
12-MAY-2015
.
8785
Replace C69 and C123 from #5909 to #5935 GG
7
25-JAN-2017
.
8988
Replace C89 from YS#5213 to YS#5220
8
26-JAN-2017
V04
8988
Implemented PC8988 YS#5213 to YS#5220
D
9
29-MAY-2017
V05
9007
Implemented PC9007, moved cap C71 away from W12
10
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11
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12
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13
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E
F
G
H
I
J
THIS SHEET CONTAINS A CHANGE HISTORY LOG, A LIST OF THE POTS & KNOBS AND A LEADS & PINS REFERENCE SECTION.
K
1
2
3
4
5
6
7
DESIGN HISTORY AND INFORMATION
4
5
6
7
8
9
10
11
POTENTIOMETERS AND KNOBS
POTENTIOMETERS AND KNOBS
REF
FUNCTION
P1
MAIN GAIN
P2
MIC GAIN
P3
BASS CONTROL
P4
CD/LINE GAIN
P5
TREBLE CONTROL
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LEADS AND PINS REFERENCE
2N5401 (YS#5108)
2N5551 (YS#5107)
MPSA06 (YS#5103)
BC550C (YS#5101)
MPSA13 (YS#5105)
BC560C (YS#5102)
MPSA92 (YS#5114)
TO-92
TO-92
C
B E
E
B C
LM7815 (YS#6872)
LM7915 (YS#6871)
TO-220
TO-220
I
G
O
G
I
O
8
9
10
11
12
13
14
POT#
STYLE
KNOB#
4434
P32
9916
4432
P32
9915
4435
P32
9917
4432
P32
9915
4434
P32
9917
.
.
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.
.
"STYLE_P32"
.
.
.
.
.
.
FOD816 (YS#2306)
NSL-32SR2 (YS#6858)
1
4
1
2
3
2
IRS21844 (YS#6586)
MJE340 (YS#6873)
1
IN
NC
1
14
SD
VB
2
13
2
J111 (YS#5119)
VSS
HO
3
3
12
TO-126
4
DT
VS
11
4
TO-92
5
COM
NC
5
10
6
LO
NC
6
9
7
VCC
NC
7
8
D
S G
E
C B
IRFP140N (YS#6931)
IRFP9140N (YS#6932)
IRGP20B60PD (YS#2373)
BDX54C (YS#6911)
BDX53C (YS#6912)
TO-247AC
TO-247AC
TO-221D
B
C
E
G
D
S
G
C
E
Section:
Product(s):
PCB#:
M1555
Modified:
2017-06-22
12
13
14
15
16
17
A
B
C
D
E
F
NE5532N (YS#6884)
MC33078 (YS#6840)
TL072 (YS#6882)
4
1
+V
8
3
A
2
7
B
G
3
6
MC33079 (YS#6804)
4
-V
5
14
1
4
13
LM311 (YS#6640)
12
+V
-V
11
1
GND
+V
8
2
10
7
H
3
BS
9
6
2
3
4
-V
B
8
5
LM13600N (YS#6745)
16
15
14
13
12
11
10
9
I
V-
1
2
3
4
5
6
7
8
J
Design Information And History
NX55P-2
K
Rev#:
V05
EML Rev#:
05
Sheet
7
Of
7
File:
History.SchDoc
Tmp Rev:
V028
15
16
17
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