Circuit Diagram (Amp Board) - Roland BOSS KATANA-50 Mk II Service Notes

Oct. 2019

Circuit Diagram (Amp Board)

fig.d-50-amp.eps
to MAIN BOARD(CN4)
+PVCC_AMP
TP704
TP703
REF-GND_AMP
12.SENSOR 12
12
11.REF-GND 11
11
10.AG 10
10
9.C-FBK 9
9
8.AG 8
8
7.SIG-MAIN 7
7
6.MUTE-AMP 6
6
5.+PVCC 5
5
4.PG-AMP 4
4
3.PG-AMP 3
3
2.-PVCC 2
2
1.SP-OUT 1
1
CN700
5100068458
TP702
TP701
TP700
-PVCC_AMP AG_AMP
PG_AMP
40
R703
470
AG_AMP
SPOUT-MONITOR [2D]
R707
C710
1608 22k
100pF
50V
1005
SP-OUT
[4C]
AG_AMP
D700 1SS387
R700 R701
330 47k
1608 1608
R702
22k
1608
[2B] SPOUT-MONITOR
REF-GND_AMP
C708
47uF
R704
63V
22k
[105 ]
+PVCC_AMP
C703
0.1uF
100V
1005
C709 AG_AMP
220pF
100V
1608
UnPop
2
IN-
3
IN+
4
SGND
R705
10
22k
MUTE
9
STBY
AG_AMP
AG_AMP
C702
0.1uF
C700 AG_AMP
100V
10uF
25V
1608 -PVCC_AMP
AG_AMP
R708
C701
0
0.1uF
1608
AG_AMP HS_GND_1 PG_AMP
50V
1005
AG_AMP
KTN-50 POWER IC HOLDER
MK700
HS_GND_1
KTN-50_2
C706
330uF
63V
[105 ] Radial
R710
82k
PG_AMP
1608
14
SP-OUT
OUT
12
LOADER
6
BOOTS
C705
5
CLIP_DET 22uF
50V
IC700
[105 ]
TDA7293V
50V
R711
82k
1608
C707
330uF
PG_AMP
63V
[105 ]
Radial
C711
0.1uF
50V
HS_GND_2
1005
MK700
HS_GND_2
[2C]