SEE LAYOUT DIAGRAM
NOTE FOR MARCONI: CHECK N115, N117, N118, N119 MOVEMENT
REF
FUNCTION
KNOB
MODEL(S):-
POT/SW YS#
POTENTIOMETERS/SWITCHES AND KNOBS
R
R
R
R
R
R
P4
R
R
P1
P2
P3
F
F
F
F
F
F
GAIN-2
F
F
GAIN-1
TREBLE
BASS
P
P
P
P
P
P
#4417
P
P
#4418
#4420
#4420
5OKB/50KW
K
K
K
K
K
K
#8641
K
K
#8641
#8641
#8641
M578A/M578B {TITLE}
13
10
7
4
1
12
9
6
11
5
8
3
#
2
MODEL(S):-
PC#
*PLACE IMPLEMENTED CHANGES INTO BOARD HISTORY
PENDING CHANGE
X
X
X
X
X
X
X
X
X
X
X
X
X
PC
PC
PC
PC
PC
PC
PC
PC
PC
PC
PC
PC
PC
{MODEL}
M___ PENDING CHANGES
11
8
5
2
12
9
6
13
10
7
3
4
1
D
09-JUL-2015
MAR-01-2005
25-NOV-2003
V
VO7
6.00
5.00
N
Board changed from single to double sided.
GT:FIXED AC CE CLEARANCES
Change copper pour by X27 to stop the perception of a short
D
D
24-MAY-2005
D
D
07-JUL-2009
11-DEC-2003
9-FEB-2004
D
V
V
6.10
V
V
6.20
5.00
5.00
5.00P1.2
N
N
PC#6904: ADD TARGETS TO CORNERS OF THE BOARD
N
N
ADDED SCORE AND REMOVED SOME ROUTES
Fixed position of shear holes
Corrected J7 to be #3523
Moved F1 to give room to W7
12
9
6
3
#
13
11
10
5
4
8
7
2
1
DATE
MODEL(S):-
VER#
DESCRIPTION OF CHANGE
2-SEP-2003
08-NOV-2002
.
APR-2000
5.00P1
4.00
.
1.0P2
REV. C27, MOVE F1, ROUTING&DRILL HOLES CHANGED
PC#6576 RESIZE TO ALLOW SHEARING
PC#6346 R21,ZD4 MOVED DOWN
GROUNDS UPDATED, RCA JKS WIRES->JMPR
10-JUL-2003
.
22-SEP-2003
18-APR-2002
07-FEB-2001
20-APR-2000
23-NOV-2000
JAN-2000
.
.
5.00P0
5.00P1.1
2.10
3.00
1.0P3
2.00
1.P0
.
BEFORE ASSEMBLY NEW TAB HOLE SIZE
N
N
PC#6248 #3417 BRKTS MOVED DOWN .010
DELETE D11->D14, C12 15P->27P
PC#6316 50KW C38 150N->220N
NEW PADS FOR FUSEHOLDER
POTS CHANGED TO STYLE 28
PC#____ DERIVED FROM M512
X578 PCB DATABASE HISTORY
50KB/50KW
