Roland HandSonic HPD-20 Service Notes page 51

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Sep. 2013
fig.d-jack3.eps@R
A+9V
A-9V
C220
C198
C197
10uF
0.1uF
0.1uF
16V
AGND_POST
R250
470
R249
1608
1
AGND_POST
<E6>
MUTE
R294
470
R295
1608
1
AGND_POST
<E6>
MUTE
R222
470
1608
1
A-MUTE
R223
<1B7>
Q13
10k
2SC4081 T106 QRS (PB FREE)
1608
AGND_POST
C224
1608
C172
100pF
10uF
16V
R233
4.7k
R239
27k
1608
1608
IC19
1608
NJM4556AD
AGND_POST
C168 100pF
2
1
0
3
1608
R357
4.7k
1608
Q11
DTC614TU T106
C173
100pF
1608
AGND_POST
R227
4.7k
R226
27k
1608
1608
IC19
1608
NJM4556AD
AGND_POST
C167 100pF
6
7
0
5
1608
R358
4.7k
1608
Q12
DTC614TU T106
AGND_POST
ADP+9V
D13
1
2
1SS362FV(TPL3)
R245
27k
R244
27k
1608
1608
C92
R242
100k
1
10uF
AGND_POST
16V
2125
1608
Q15
2SA1037AKT146(PB FREE)
R243
47k
1608
AGND_POST
A-9V
OpAmp Gain = 6.74
Phones Amp Gain = 6.14 = +15.76dB
Phones Level +30.7dBu
100uF
16V
C171
R235
47
R220
47
5025
1/2W
5025 1/2W
R228
10k
C59
1608
1
150pF
1608
UnPop
Q10
AGND_POST
DTC614TU T106
R11
330
1608
AGND_POST
<E6>
MUTE
UnPop
AGND_POST
100uF
16V
C174
R236
47
R256
5025
1/2W
5025
R229
10k
C60
1608
1
150pF
1608
UnPop
Q9
AGND_POST
DTC614TU T106
R12
330
AGND_POST
1608
<E6>
MUTE
UnPop
AGND_POST
3225 1/4W
R213
330
1608
R211
680
1
<E6>
MUTE
Q14
DTC614TU T106
AGND_POST
AGND_POST
3225 1/4W
R212
330
1608
R210
680
1
<E6>
MUTE
Q8
DTC614TU T106
AGND_POST
AGND_POST
C157
100uF
16V
MUTE
<B5;B6;C5;C6;D6>
C90
0.1uF
UnPop
A+9V
16V
C199 100uF
C166
0.1uF
AGND_POST
IC19
NJM4556AD
C195
0.1uF
C196
100uF
16V
A-9V
AGND_POST
L35
BLM18BD601SN1D
C65
0.01uF
1608
2
4
FS7
NC-X SYMBOL
3
1
AGND_POST
LGR4609-7100F
R216
0
L38
47
1608
1/2W
BLM18BD601SN1D
C64
AGND_POST
0.01uF
1608
AGND_POST
L31
BLM18BD601SN1D
2
4
FS8
NC-X SYMBOL
3
R237
0
1
1608
1608
LGR4609-7100F
C194
1000pF
R308
0
1608
AGND_POST
L30 BLM18BD601SN1D
AGND_POST
2
4
3
R238
0
1
1608
JK8
1608
LGR4609-7100F
C177
1000pF
R311
0
1608
AGND_POST
AGND_POST
HPD-20
PHONES
JK6
MASTER L
JK7
MASTER R
51

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