YORKVILLE Coliseum CA12, Service Schematics

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Title
Number Revision Size
A4
Date: 15-Feb-2006 Sheet of
File: D:\OTHER MODEL\MP1200\AMP1270.ddbDrawn By:
MAIN BOARD 6OF 7
6 7
LHH
1270S06.SCH
R
6
0
9
4
7
K
R601
1.5K
R603
56K
R605
10K
R607
4.7K
C603
56P
C601
4u7/50V
3
2
1
IC601A
4558
R
6
1
0
4
7
K
R602
1.5K
R606
10K
R608
4.7K
C604 56P
C602
4u7/50V
5
6
7
IC601B
4558
IN
P
U
T
R604
56K
L
IN
E
-1
R
6
1
4
2
.2
K
R615
220K
C611
56P
3
2
1
IC602A
4558
R
6
1
1
1
0
0
K
5
6
7
IC602B
4558
R620
15K
D602
1N4148
C612
100uF/25V
R616
4.7K
R
6
1
3
1
0
0
K
FC601
N.C
FC602
N.C
2
3
1
SW601A
5
6
4
SW601B
R
6
1
2
1
0
0
K
Q601
2N4401
R617
100
C609
4u7/50V
C605
10u/25V
C606
10u/25V
D605 1N4148
1
2
3
4
5
6
7
8
9
10
CNA602
CON10
BUS-L BUS-R
TO ZONE 2 AMPLIFIER
CLOCK
Clock
POWER.6
R-CH.6
L-CH.6
D607
1N4148
+15V
-15V
8
4
IC602C
4558
8
4
IC601C
4558
C607
100uF/25V
C608
100uF/25V
+15V
-15V
L-IN.6
R-IN.6
BUS PW
C610
10u/25V
D
6
0
1
1
N
4
1
4
8
Q603
2N4401
D611
1N4148
CLIP.6
D606
1N4148
D
6
0
9
1
N
4
1
4
8
OutA
2
VCC
1
VREF
5
IN-A
3
Sense
6
SW
7
INT
4
IN-B
8
OutB
9
GND
10
IC604
NJM2761
11
10
12
IC107C
SSM2164
3
2
9
7
8
4
5
1
6
JK603
3
2
1
IC603A
TL072
R637
30K
C619 100P
R
6
3
3
3
0
K
C617
1uF/50V
R635
499
C615
560P
14
15
13
IC107D
SSM2164
5
6
7
IC603B
TL072
R638
30K
C620 100P
R
6
3
4
3
0
K
C618
1uF/50V
R636
499
C616
560P
1 3
2
VR601
B50K
1 3
2
VR602
B50K
+5V
8
4
IC603C
TL072
R639
9.1K
2
3
1
SW602A
R621
220
D604
1N4148
RESET
reset
R618
220K
+15V
CLIP-6
POW-6
VCL-6
VCR-6
JK606A
JK606B
BOARD CNA702
+15V
VCA-L
Clock
POWER
RCH-O
-15V
VCA-R
GND
CLIP
LIMITER SW
OFF
ON
R640
1K
REMOTE VOLUME
C
6
2
5
0
.2
2
u
F
/5
0
V
C623
0.22uF/50V
C624
0.22uF/50V
C627
0.022uF/50V
LCH-O
R619
10K
R625
22K
C629
22uF/25V
+5V
R624
15K
D608
1N4148
C
6
2
6
0
.2
2
u
F
/5
0
V
+15V
R641
68
ZD601
12V
+15V
C
6
3
0
0
.1
u
F
MUTE MUTE
R
6
4
2
4
7
K
C628
0.22uF/50V
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