Roland HandSonic HPD-20 Service Notes page 31

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Sep. 2013
fig.d-main2.eps@R
Q1
QS8J4TR
2SA1832-GR(TE85L.F)
PWR+5V
1
R50
R82
Q2
1k
100k
1
C63
1000pF
D1
5.6B
R5
10k
DGND
DGND
6
5
3
Q1
QS8J4TR
DGND
DGND
D+5V
R109
L7
0
EXCML16A270U
8
1608
7
C33
100pF
TP7
C52
R56
220uF
1k
25V
DGND
ESR
DGND
R16
R22
56k
47k
DGND
1608
1608
C35
C34
330pF
330pF
1608
1608
R72
0
1608
R26
1k
CDRH3D18NP-150NC-R
L3
10
7
FB1
SW1
8
SW1
9
EN1
10uF
5
PGND1
11
6
ITH1
PGND1
CDRH3D18NP-150NC-R
L4
16
18
FB2
SW2
19
SW2
C228
17
EN2
10uF
1
PGND2
15
20
ITH2
PGND2
13
NC
IC2
BD9150MUV-E2
DGND
DGND
A+9V
1SS362FV(TPL3)
R141
0
IC12
UPC29L05T-E1-AZ
3
IN
OUT
C42
C235
10uF
0.22uF
16V
2012
AGND
D+3.3V
15uH
TP5
C39
C40
10uF
2012
2012
UnPop
D+1.2V
15uH
TP9
C221
10uF
2012
2012
UnPop
1608
R70
10k
D ( 0.5% )
A+5V
D17
2
1
1
TP108
C51
100uF
C222
EEEFPV101XAP
0.1uF
HPD-20
31

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