Marshall 120 Power Amp 2x120w Schematic

This is the 4 pages manual for Marshall 120 Power Amp 2x120w Schematic.
Read or download the pdf for free. If you want to contribute, please upload pdfs to audioservicemanuals.wetransfer.com.

Page: 1 / 4
Marshall 120 Power Amp 2x120w Schematic

Extracted text from Marshall 120 Power Amp 2x120w Schematic (Ocr-read)


Page 1

(\1
(SI? +HT
-q
S N a
L? a %
SJ 3 § g m D [x
cu m N Q,
-q
> >2 73
5 U1 ¥
S O N T
2 H U
C) E X E
Z S!
(D
:< 3 g2:
9 3m a
g s
g N
TO C56 $54 2 g 3 a
- m
BEEELEEBE3BZ U é TDTk TDTl £2: E ES
. 01-8 M N $§ §PK $12535 ISFEED35 .1 m :1: §
+ m m S RL R a N
LIN +---|I g g & o - :2 E RIN
R73 25V N V21 N TRQQ 8 a TO C55
TRQLL . 3 E12] 5'. uneven-53412
D m .a REFF21
G a % D29 n__ EEEEEzEEFTézg m g 3
P F i- a a u: 3
.- m 5
9 53v Wu 2 g 0-.- 53V
1 m I
GRND C51+
F 2 m
70 E U i m D H i L0
6' E E TR13 N $32 % E TRIM. E E
In 2 DC In -4
MUTE f g T TR2 § §
u, m
TO RLi-Z m % P 3 § (y 33533211751412
DRG ViZB-Bl-BZ 2 E _ E REFDu.
REFDLE. E g > m f m g
m H w M m U 3111 5, L + f. + f. -
3| m WM (i 2: :U 35?: 1:: 5: ms 13 m
T W m m 3 § T S I: R: I P ° F
. L) U
FHT
+HT _ _
n g A
c ,\ _
383 TlF T1 381 2 + E E u a 0:? 0235315225332 H
GRND «Tm-gm] TOW 0 g g g A EC 1
3 In s D:
,5 5 REF D3 REF E3 3m + < AC2 L" g
a S v SPEAKER SPEAKER 1 T7 2
>2: 3 E :2 E S §SZE OUTPUTS OUTPUTS c - :I- V E . TO stnsts F 13
E .1 5 LEFT RIGHT TB - V V - DRGV128-51»E2 u a
- WES m _ H N m
NOTES.- - $5 . T3 g S .s m g » é _
1>ALLRESISTORS i/LFN UNLESS STATED. '-© 0 T F s U g T H MAINS
A JSL» TO T11 TO T12 352 'T __ -cn :: 2:00
2) SAFETY CRITICALCOMPONENTS 1n REF D3 REF E3 4 m g Ug E a m > L) TRANSFORMER
COMPONENTS MUST BE REPLACED % 3 E m g g TURRDID
NITH THE SAME TYPE AND CHASSIS EARTH < a INTERNATIONAL
RATING ONLY. - - iOOV:XXX
_HT 115V:XXX
3)TO R112 REF D|+=TD RESISTOR RLL2 GRID REFERENCE DH». GRND 23BV=><><><
AL, OT|- ER HOLES = X = (THROUGH PLATED) MATERIAL DIMENSIDNSIN TIT
A E J N HATERIALTHICKNESS TOLERANCE(IJNLESSIJTHERNISESTATED) , ' I LE SHT 1 OF 3
B E K P WNBKEIR WE18.11.5113 4 1 POWER AMPLIFIERS
C L O CHECKED we mm 0146.111: 155
155 ECO NUMBER DATE D H M R 128/ 128 iN"111231111212311-s;LagsgfigézxmI VIZB-Bl-BE 2
A B C D E F G H

Page 2

IgnOYELOlieTS /


B C D E F G H
N EHT +HT
S)
I
I 00 22PCBS
S TLT mums '- D3E] R87
3 (n R107 _KJL 2- , } mK ICZb RIOS
> E E DRGJIfleTOlIse O2 % 15" ' D38 3 1 WM 7
E, I - - m DLO-B 3 +
._. m5 REFE3 70 + IC30
-0 mums 2
. m _
a m 932: $8 3 § 422% 5?
Z |-- U'Ig qu H N 2 U
. S, m H N \
(D [,4 m
K
o GRND CLBIP
VALVESTATE .- fi DIMENSION .- $ Z -HT +HT
REMOTE F >5 ME REMOTE W 5 m:
INPUT Eff INPUT E; m N y w
_ Im 73 I2 23 LO Q g 03
ESE LU ,_. 357 LnLU ,_. 00 II
33 :3 33 El ZZPCSB
5 EL; S D 2 mums .4H7 035
5243C MONOP B 524C MONOP g TD Tlla (n R85 _.Q_ 1 _ , '
I~ N D DRG VIZB-EZ-BE 0 D33 1'»
03 g E W s 5 7E 15k I Lmzua Mug
r m ,2: % § r m 5 % N > a U m,_ '- 15 5 S :- m T 1C3d
U m E m U7 E z :3 I- mums
E ° 0 E N O m
[Al N; .-
D GRND D F 332: 32:;
. I I I I . d m
VALVESTATE DIMENSION .
ON ON
REGi
+LT 7E15 +15
- - I D _ - - - -
COM
3 E HP 8 3 m E E
®- EE 00- ?[RFEJ' mm H + E E E
- SJ - [\J 7R __ N UT s s s
E 55 > O rm 0 N r N r 3 fl 3 fl 3
E E E R a E wk; E Efl RE 5 a
N H :- - I-CN
- FUSIBLE mm 3 m SZN FAN a a B u
AC1 + 1/214 2R2 D9 |/| 0+5 LU j, \ SUPPLY
R25 m 3 GRND
TD CDNl 1 I 0-. I BAkSEB BALSEO BAbSEE LMBkE
DROv12O-Sz-O2 5m
REF [35. FUSIELE LICEC ICLEC hIClc 11 ICEe
AC2 +---0 BCLsz
1/214
R28 U D a a 8
>-- >-- (1 n r)
n N S O 0 U1 E 00 E .- >-- m
OEIIB E: wwaw
_i Z _ TR7 53 23 23 5"
- W u: u:
E 5 COM < <
1) ALL RESISTURS l/lEl/J UNLESS STATED. < " I . .
- 2) SAFETY CRITICAL COMPONENTS 'LT 7915 -15
COMPONENTS MUSTBE REPLACED RE62
WITH THE SAME TYPE AND
RATING ONLY.
3)TDCDN1 REPSS:-
TO CONNECTOR 1 GRID REF GS. SHT2 0F3
AL _ OTHER HOLES : >< : (THROUGH PLATED) MATERIAL ummsmsm TITLE
A E J N MATERIALTHICKNESS TOLERANCE(UNLESSLITHERNISESYATED! ' ' REGULATORS.MUTING
B F K P WNB.KEIR N 13.21337 4 PEAK AND REMOTE
C G L [J CHECKED TE MODEL 0 JIHHAPSHALLIPRUDUWUD _ DNG.NO ISS
ISS ECO NUMBER DATE D H M R APPRWED DATE 128/128 igiléZEZélél"W'5 , " VlZB-Bl-BE 2
A B C D E P | G H