Roland Va-3 - Phones PCB Assembly & Diagram; Switch D-Beam PCB Assembly & Diagram; Volume PCB Assembly & Diagram

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VA-3
Jan, 2001
PHONES PCB ASSY & CIRCUIT DIAGRAM
ASSY 7770707000
View from component side
L1=L2=L3=L4=L5=L6=BLO3RN2-R62T2
FROM POW.AMP. BOARD
RETURN R
RETURN L
SEND L
SEND R
AGND
PHONE_R
PHONE_L
(CN4)
JK1
YKB21_5006
8
7
3
2
4
5
1
JK2
YKB21_5006
8
7
3
2
4
5
1
R1
33I
R2
33I
R3
33I
R4
33I
L3
L1
L2
L4
L5
CN1
53014_0710
3
4
2
1
5
6
7
C1
100nFC
L6
C2
100nFC
View from component side
SWITCH D-BEAM PCB ASSY& CIRCUIT DIAGRAM
ASSY 7770705000
DBEAM
ON/OFF
TO CONTROL BOARD
(CN2)
DBEAM
ON/OFF
LED_A
LED_K
LSSC1
SCD7
SW24
D27
1 2
D105
12
CN1
53015-0410
3
4
2
1
VOLUME PCB ASSY & CIRCUIT DIAGRAM
ASSY 7770706000
View from component side
SEND R
SEND L
RETURN L
RETURN R
A.GND
A.GND
VOLUME
412536n
MAXMIN
TOP WIEV
TO JACK BOARD
(CN1)
A
A
VR1A
RK14K1230
1 3
2
VR1B
4 6
5
CN5
53015-0610
3
4
2
1
5
6
C1
100nFc