Roland AT-80SL - Page 121

136
Jun. 2005
CIRCUIT DIAGRAM (DISPLAY, VOLUME)
fig.display-c
fig.vol-c
To TOUCH P
A
To MAIN
BOARD
DD
+
5D
D
+
5D
D
2
+
1
2-1
D
2
+
1
2-1
Q9
2SC1815GR
3
1 2
Q10
2SA1015GR
3
2 1
R78
4.7K
R80
2.7K
Q8
2SC1815GR
3
1 2
R77
4.7K
R79
2.7K
IC7A
UPC4570HA
+
-
3
4
2
R81
2.7K
R83
4.7K
R85
100K
C55
DD@
0.01
Q11
2SA1015GR
3
2 1
IC7B
UPC4570HA
+
-
7
6
8
R82
2.7K
R84
4.7K
R86
100K
C56
DD@
0.01
CN7
52043-0410
1
1
2
2
3
3
4
4
IC7C
UPC4570HA
+
-
1
5 9
C60
ECA-M@
33/16
CN8
B8B-PH-K-S
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
C59
ECA-M@
33/16
DISPLAY BOARD ASSY
MASTER VR
BRILL
To MAIN BOARD
To PANEL C
BOARD
REF
FER
+
5
REF
FER
+
5
REF REF D D D
FER
+
5
D
VR1A
EWANFEX10B14
1
2
3
R91
2.2K
R89
6.8K
C61
(25MV4R7SWB+T)
4.7/25
R92
JP
R90
NIU
C62
SRA-VB@
1/50
C64
0.1
DD@
SW4
EVQQJJ05Q
1 2
LED2
SLI-343URCT32W
12
D13
1SS133
12
SW3
EVQ11A05R
1 2
D12
1SS133
12
C67
0.1
DD@
R87
JP
R88
JP
VR2B
EWANF@
10
20
VR1B
EWANF@
10
20
VR2A
EWANFDX10B14
1
2
3
CN10
53253-0610
1
1
2
2
3
3
4
4
5
5
6
6
CN11
B6B-PH-K-S
1
1
2
2
3
3
4
4
5
5
6
6
C63
ECEA-KS@
47/16
LED1
SLI-343URCT32W
12