YORKVILLE 50KW Service Manual page 13

"STYLE_P28"
POTENTIOMETERS/SWITCHES AND KNOBS
MODEL(S):- 5OKB/50KW M578A/M578B {TITLE}
REF FUNCTION POT/SW YS#
P1 GAIN-1 #4418
P2 TREBLE #4420
P3 BASS #4420
P4 GAIN-2 #4417
R F P
R F P
R F P
R F P
R F P
R F P
R F P
R F P
MULTI VALUE PARTS
MODELS:
50KW 50KB
# COMP#
M578A M578B
1
_C11 27P 5404 47P 5408
2
_C20 220N 5318 100N 5314
3
_C21 3N3 5428 1N5 5424
4
_C22 NotStuffed 100N 5314
5
_C23 47N 5308 68N 5310
6
_R29 2K7 4864 3K9 4850
7
_R30 10K 4829 4K7 4827
8
_R31 0R0 4599 4K7 4827
9
_R32 NotStuffed 2K2 4847
10
_X63 Stuffed NotStuffed
11
_X64 NotStuffed Stuffed
12
C P P
13
C P P
14
C P P
15
C P P
16
C P P
17
C P P
18
C P P
19
C P P
20
C P P
LM3876T
KNOB
#8641
#8641
#8641
#8641
K
K
K
K
K
K
K
K
{MODEL C} {MODEL D}
{BOARD C} {BOARD D}
P P
P P
P P
P P
P P
P P
P P
P P
P P
P P
P P
P P
P P
P P
P P
P P
P P
P P
P P
P P
X578 PENDING CHANGES
MODEL(S):-
50KB, 50KW
# PC# PENDING CHANGE
1 PC X
2 PC X
3 PC X
4 PC X
5 PC X
6 PC X
7 PC X
8 PC X
9 PC X
10 PC X
11 PC X
12 PC X
13 PC X
*PLACE IMPLEMENTED CHANGES INTO BOARD HISTORY
X578 PCB DATABASE HISTORY
MODEL(S):-
50KB/50KW
# DATE VER# DESCRIPTION OF CHANGE
1 JAN-2000 1.P0 PC#____ DERIVED FROM M512
2 . . POTS CHANGED TO STYLE 28
3 APR-2000 1.0P2 GROUNDS UPDATED, RCA JKS WIRES->JMPR
4 20-APR-2000 1.0P3 DELETE D11->D14, C12 15P->27P
5 23-NOV-2000 2.00 PC#6248 #3417 BRKTS MOVED DOWN .010
6 . . PC#6346 R21,ZD4 MOVED DOWN
7 07-FEB-2001 2.10 PC#6316 50KW C38 150N->220N
8 18-APR-2002 3.00 NEW PADS FOR FUSEHOLDER
9 08-NOV-2002 4.00 PC#6576 RESIZE TO ALLOW SHEARING
10 . . BEFORE ASSEMBLY NEW TAB HOLE SIZE
11 10-JUL-2003 5.00P0 PCAD2002 REDRAW,16V MIC PHANTOM,EFX GND REREF
12 2-SEP-2003 5.00P1 REV. C27, MOVE F1, ROUTING&DRILL HOLES CHANGED
13 22-SEP-2003 5.00P1.1 Added test points, fixed routing
1 D 5.00P1.2 Moved F1 to give room to W7
2 25-NOV-2003 5.00 Change copper pour by X27 to stop the perception of a short
3 11-DEC-2003 5.00 Fixed position of shear holes
4 9-FEB-2004 5.00 Corrected J7 to be #3523
5 MAR-01-2005 6.00 GT:FIXED AC CE CLEARANCES
6 24-MAY-2005 6.10 PC#6904: ADD TARGETS TO CORNERS OF THE BOARD
7 07-JUL-2009 6.20 ADDED SCORE AND REMOVED SOME ROUTES
8 09-JUL-2015 VO7 Board changed from single to double sided.
9 D V N
10 D V N
11 D V N
12 D V N
13 D V N
Product
ECO
Date:
Filename:
50KB/50KW
PCB# X578
Mon Jul 13, 2015 Rev:
X578V07sch.sch2006
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Sheet 2 of 2
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V6.20