Musicmaster Guitar Amp Layout
FENDER
MODEL
““MUSICMASTER-AMP”“ SCHEMATIC
NOTICE
1. VOLTAGES READ TO GROUND WITH ELECTRONIC
VOLTMETER VALUES SHOWN + OR - 20%
2. ALL RESISTORS 1/2 WATT 10% TOLERANCE IF NOT SPECIFIED
250K-A
V2
6V6GTA
AUDIO
TRANSFORMER
026847
246v
290v
3
OUTPUT
TRANSFORMER
026839
GREEN
4
5
SPEAKER
8Ω
Ω
8
3
15K
BLACK
1.4v
25 25
1M-A
1
2
820
250K-A
BASS
.047
V1A
VOLUME
100K
100K
1.2v
.1
25 25
8
1500
68K
7
1
250
pf
165v
6
6800
68K
V1B
TREBLE
V1
12AX7A
2
1M
INSTRUMENTS
3. ALL CAPACITORS AT LEAST 400 VOLT IF NOT SPECIFIED
220-2w
25 25
16v
V3
6V6GTA
290v
3
4
5
8
10K
250v
+
-
+
20
300v
POWER
TRANSFORMER
026821
CSA THERMAL
PROTECTOR
010872
BLK
GRN
60Hz
WHT
.047
600v
PILOT
LIGHT
295v
+
40
300v
-
245v
1A 800v
6.3v
This schematic depicts a modification of a manufactured CBS Musical
Instruments Fender branded product.
This schematic is not generated by, nor authorized or sanctioned by the
Fender Music Company, CBS Musical Instruments or other companies
affiliated with the Fender name brand.
20
300v
1A 800v
245v
A.C.
SWITCH
120V
1K
290v
2
2
V3
V2
7
7
4/5
V1
9
CBS MUSICAL INSTRUMENTS - A DIVISION OF CBS, INC
FULLERTON, CALIFORNIA 97431
PART NAME
SCHEMATIC
MUSICMASTER GUITAR AMP. MOD
DOMESTIC T.T
FENDER
MODEL
““MUSICMASTER-AMP”“ LAYOUT
NOTI C E
VOLTAGES READ TO GROUND
WITH ELECTRONIC VOLTMETER
VALUES SHOWN + OR - 20%
BASS
VOLUME
A.C. SWITCH
TREBLE
INSTRUMENTS
2
1
1M-A
1M
6.8
PILOT
LIGHT
68K
68K
25
-
25
250K-A
.1
K
250K-A
+
RED
RED
0
0
W
N
BL AC K
3
EE
+290V.
+295V.
6
8
7
6V6GTA
4
BLUE
5
2
1
2
026847
6
8
7
6V6GTA
0
1.5K
.0 4 7
2
10
K
+1.2V.
GREEN
AC CORD
117 VOLTS AC
0
100K
D
3
5
+
+250V.
BROWN
+290V.
4
2
1
GR
RED
RE
WHIT E
E
BLU
+290V.
6
.0
4
0 7
0
v
TO ALL
6.3V. HEATERS
H
IT
E
GREEN
-
25
1K
+
+
25
-
82
pf
50
300
0
20
-
15K
+
25
0
3
25
0
+
3
2
220 - 2W
-
0
-
4
026821
10K
BLA
CK
RED - YELLOW
YELLOW
+246V.
3
4
1
5
6
9
8
+165V.
7
+1.2V.
12AX7A
This layout depicts a modification of a manufactured CBS Musical
Instruments Fender branded product.
This layout is not generated by, nor authorized or sanctioned by the
Fender Music Company, CBS Musical Instruments or other companies
affiliated with the Fender name brand.
NOTE:
ALL RESISTORS 1/2 WATT 10% TOLERANCE, IF NOT SPECIFIED
NOTE:
ALL CAPACITORS AT LEAST 400 VOLT RATING, IF NOT SPECIFIED
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