Panasonic SC-HC20GA, Service Manual

Page: 92 / 115

92
17.8. MOTOR, BRIDGE 1, SPEAKER & BRIDGE 2 CIRCUIT
A
B
C
D
E
F
G
H
1 2 3 4 5 6 7 8 9 10 11 1 2 13 14
1 2 3 4 5 6 7 8 9 10 11 1 2 13 14
A
B
D
E
F
H
G
C
: +B S IGN A L LINE
S CHEM A TIC DI A GR A M - 8
S C-HC 2 0G A /GN MOTOR / BRIDGE 1 / S PE A KER / BRIDGE 2 CIRCUIT
MOTOR CIRCUIT
TO
BRIDGE 1
CIRCUIT
(P909)
IN
S CHEM A TIC
DI A GR A M - 8
TO
PO
S ITION S W
CIRCUIT
(P
6 41*)
IN S CHEM A TIC
DI A GR A M - 7
: +B S IGN A L LINE
BRIDGE 1 CIRCUIT
TO
M
A IN CIRCUIT
(P101)
IN
S CHEM A TIC
DI A GR A M - 5
TO
MOTOR CIRCUIT
(P
6 4 2 )
IN S CHEM A TIC
DI A GR A M - 8
BRIDGE 2 CIRCUIT
: A UDIO OUTPUT S IGN A L LINE
TO
M
A IN CIRCUIT (P 2 )
IN S CHEM A TIC
DI A GR A M - 3
TO
S PE A KER CIRCUIT
(P905)
IN
S CHEM A TIC
DI A GR A M - 8
S PE A KER CIRCUIT
: A UDIO OUTPUT S IGN A L LINE
TO
BRIDGE
2
CIRCUIT (P90 7 )
IN S CHEM A TIC
DI A GR A M - 8
TO LEFT S PE A KER
TO RIGHT S PE A KER
+
MT1*
D 6 01
D 6 01~D 6 0 2
B0BC 7 R500001
D 6 0 2
MOTOR
2
4
3
1
6
5
P 6 4 2
2
1
4
3
P 6 40*
V REF-
INT_3.3 V
PO S ITION(OPEN)
PO S ITION(CLO S E)
M-
M+
V REF-
PO S ITION(CLO S E)
PO S ITION(OPEN)
INT_3.3 V
2
4
3
1
6
5
P909
2
4
3
1
6
5
P910
PO S ITION(CLO S E)
M+
M-
PO S ITION(OPEN)
V REF-
INT_3.3 V
M+
M-
PO S ITION(OPEN)
V REF-
INT_3.3 V
PO S ITION(CLO S E)
P90 6 P90 7
2
1
4
3 L_ S PKR_-
R_ S PKR_-
R_ S PKR_+
L_ S PKR_+
2
1
4
3
L_ S PKR_-
L_ S PKR_+
R_ S PKR_-
R_ S PKR_+
1
2
P903*
1
2
P904*
L_ S PKR_+
L_ S PKR_-
R_ S PKR_-
R_ S PKR_+
2
1
4
3
P905
L_ S PKR_+
R_ S PKR_+
L_ S PKR_-
R_ S PKR_-