Circuit Diagram (Volume) - Roland V-Accordion FR-8x Service Notes

July 2013

CIRCUIT DIAGRAM (VOLUME)

D+5V
CN1
S12B-PH-K-S
1
2
3
TO
4
5
RIGHT REG. B.
6
7
(CN2)
8
9
10
11
12
D
+Vcc
-Vcc
CN2
S10B-PH-K-S P.2JST
10
9
TO
8
7
JACK B. 6
5
4
(CN9)
3
2
1
D
92
SW1
EVQ11A05R
C1
10uF
C2 C2
100nF
D
C21
10nF Q2
RN2426(TE85L.F)
D
R2 R3
D+5V D+5V NIU 220ohm
R22 R21
NIU 470 ohm D6
L-934MBDL
R24 Q3
10K 2SC4738-GR(TE85L.F)
1
R25
10K
D D
SW7
EVQ11A05R
D
VR1
10K
C9
100nF R13 R14 R14 4 5
NIU 100 100
C10 2
10uF 6
C11 C11
100pF
REF
R17 R19
100 560K
3
1
2 REF
IC2A
UPC4570G2-E2-A
D1 SW2 SW3 D2
MA3J142E EVQ11A05R EVQ11A05R MA3J142E
2 1 2 1
D+5V
R1 R1 SW6
100 100 EVQ11A05R
1
Q1
RN2426(TE85L.F)
1
D
R4
330 ohm
IC1A IC1B
D5 D5 R23 TC74VHC14FT(EL) TC74VHC14FT(EL)
100
SPI-325MUWT31
2 1 4
D
6 5 8
R26 IC1C IC1D
100 TC74VHC14FT(EL) TC74VHC14FT(EL)
SW8
EVQ11A05R
D
10
12
VR2
10K
R15 4 5
100 100
2 +Vcc
6
C12
100pF
D D
IC2C
R16
NIU UPC4570G2-E2-A
R18 R18
100 100 R20
560K
5
-Vcc
7
6 REF
IC2B
UPC4570G2-E2-A
SW4 D3 SW5 D4
EVQ11A05R MA3J142E EVQ11A05R MA3J142E
2 1 2 1
D+5V
R7 R8
10K 10K
R9 R9 100 100
D D E E
3 3
A A
R10 R10 100 100
9 2
B B
6
1 7 ENC1
COMM COMM
C6
EC12E24244F25
C5 10nF
10nF
D D D
D+5V C8 C8
100nF 100nF
IC1E
TC74VHC14FT(EL)
11
IC1G
D
TC74VHC14FT(EL)
13
D
D
IC1F
TC74VHC14FT(EL)
C14 C13
100nF 100nF
C15 C16
10uF 100nF
- -
C17
+ +
100nF
D
C19
10uF
C20
100nF
C18
100nF
REF
D
FR-8X/XD
93