Boss GT-100 Service Notes page 29

Mar. 2012
fig.d-main-1.eps@R
GND
C69
1uF
16V
C68
1uF
16V
R50 0
R57 0
GND
R56 0
R40 0
GND
A+14
GND
A-14
FB+14V
L1
ELL6SH470M Q4
47uH QS5U17TR(PB FREE)
3 4
Q4
C16
1
QS5U17TR(PB FREE)
4.7uF 47uF
25V
Q17 C39
C24
SI2303CDS-T1-GE3 47uF
4.7uF
25V
2 3
25V
D24
CUS02(TE85L.Q)
Q1 UnPop
Q1 UnPop
4 2
1 5
FB-14V
L2
Q5
ELL6SH220M
CPH5848-J-TL-E
22uH
2 5
C280
1uF C128
16V 10uF
2125
L4
ELL6SH470M
Q2
CPH5848-J-TL-E 47uH
2 5
C281
1uF C142
C19
16V 10uF
0.1uF
2125
A+12
GND
GND
A+14
Q29
Q41
2SC4738-GR(TE85L.F)
MCH6306-TL-E
4 6
S D4
5
R21 D3
3
2
0 D2
1608 1
D1
R22
2.2k
C38
C18
0.1uF
C228 25V
25V
1uF
16V
TP41
C246
220uF
C32 25V
TP42 0.1uF
25V
R27
2.2k
3
R23
0
2SA1832-GR(TE85L.F)
1608
A-14
IC8
NJM2882F33-TE1
1 5
VIN VOUT
3 4
CTRL N-BP
R89
10k
C149
10000pF
GND
FB+1.2V
for ESC2 Core
D+1.2
R24
0
1608
C79
C26 C25 C258
100uF
0.1uF 0.1uF 0.1uF
6.3V
GND
for Digital
FB+3.3V
D+3.3
R26 0
1608
C34
220uF
C23
16V
0.1uF
R186
0 UnPop for PHONES
1608
A+PH
Q31
2SC4738-GR(TE85L.F)
3 2
R266
2.2k
C249
0.1uF
25V
TP98
C247
10uF
35V
for ANALOG
A+12
2
C22 C33
0.1uF 47uF
C245 25V 25V
220uF
25V
GND
C40
47uF
25V
2
Q30
35V
10uF
C248
A-12
for ANALOG
C251
0.1uF
25V
R267
2.2k
3 2
Q32
2SA1832-GR(TE85L.F)
A+3.3
A-PH
for PHONES
R187
0 UnPop
1608
TP206
C27
0.1uF
GND
GT-100
29