Circuit Diagram(Main 4/4) - Roland BOSS BR-1180 Service Notes

MAY.2002

CIRCUIT DIAGRAM(MAIN 4/4)

fig.main4-c
CN109
TO +5V POWER BOARD
1
2
CN114
3
4
B4B-XH-A
JK8
2 FL 1
D56
1 1 2 1 4
3
RB051L-40 2 3
HEC0470-01-640 C121
0.1 SH-202
3Amax
30
1
2
3
4
D
3.3V_CPU
IC49
UPC29M33T
1 3
IN OUT
C294 C295
0.1
47/16
D
L13 R273
ELL6SH2R7M(2.7uH) 0.22(0.1W )
2.4Ama x C115
R274
100/16
1k
D
IC22
5
CLM OUT
GND
4
VCC IN
M62270GP
IC48
TA78M09F
1 3
IN OUT
C286 C293
C120 470/16 0.1
470/16
A
Q21A
TPC8303
4.5Amax
1
R138
100k
1
C112 C113
0.1
470/16
D
Q29
CPH6302
6
5 L14
2 ELC10D470E(47uH)
4 1
2.5Amax C116 C117
100/16 0.1
D55
RB051L-40
D D
D
1
2
D
3
C118 C119
0.1
470/16
R147 1k
POWER ON/OFF
H:ON/L:OFF
C123
0.1
D
Q22A
+ 5
D TPC8303
8
7 1
R139
digital power
supply(5V)
100k
Q23 1
DTC114EUA
D D
R141 1k
CDR-POWER ON/OFF
H:ON/L:OFF C111
0.1
D
Q31B
TPC8303
Q22B HD power
TPC8303 3
5
3 6
R259
R143
100k
hard disk power
supply(12V)
100k
1
1 Q27
DTC114EUA
D
Q21B
+
TPC8303 D 3. 3
5
3 6
R144
digital power
supply(3.3V)
100k
1 Q30
DTC114EUA
D
Q31A
+
TPC8303
8
1 7
analog power
R146
supply(+9V)
100k
Q33
1
DTC114EUA
A
BR-1180
CDR_5V
8
7
CDR power
supply(5V)
Q24
DTC114EUA
LCD_BACKLIT
5
6
Q36
DTC114EUA
D
31