Panasonic SA-AK78 Service Manual page 32

SA-AK78
SCHEMATIC DIAGRAM-6
E
D
Q1218
DTA114EKAT146
MOTOR DRIVE
4.9V
((0V))
C
((4.9V))
0V
A
B
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:NEGATIVE VOLTAGE LINE
:POSITIVE VOLTAGE LINE
14.8V
Z1101
1 2 3
C
H
F
E
D
B
5.1V
((0V)) ((0V))
1 2 3
((5.1V))
Q1220
DTA143XKA146
MOTOR DRIVE
((4.9V)) ((5.1V))
16 15 14
((5V)) ((4.5V)) ((4.5V)) ((0V))
R1232
1K
((0V))
A
G
:TAPE PLAYBACK SIGNAL LINE
: RECORDING SIGNAL LINE
25K 25K 25K
4 5 6 7
5V
R1215 2.2K
R1216 2.2K
4.9V
((4.6V)) ((0V)) ((0V))
4 5 6 7 8
IC1105
BU2090AF-E2
SYSTEM CONTROL
13 12 11 10 9
((4.9V)) ((0V))
0V 4.3V
Q1206
2SB621RTA
R1221 SOLENOID DRIVE
2.7
((0V)) ((14.2V))
((14V))
Q1208
DTC114TKA146
SOLENOID DRIVE
((4.5V)) ((14V))
((4.9V))
((4.9V))
((4.5V)) ((14V))
Q1209
DTC114TKA146
SOLENOID DRIVE
((14V))
R1225
2.7
((0V)) ((14.2V))
Q1207
2SB621RTA
R1206
SOLENOID DRIVE
220
32
H1100
M.GND
1
MO.GND
2
MO +B
14.2V 3
To
4 D.GND
R1144
(CN100)
+B(3)
5
10K
on SCHEMATIC
B 6 Rch IN
DIAGRAM-12
A Lch IN
7
R1143 8 A.GND
10K
D Rch OUT
9
C 10 Lch OUT
TP10 TP9
CN1201
SW5V
1
SER1
2
To
SER4
3
(H601)
VREF-
4
on SCHEMATIC
TPS
5
DIAGRAM-9
DECK1
6
7 DECK2
VREF(+)
8
W1200
2
14.2V
Q1203
M
2SD965RTA
MOTOR
MOTOR DRIVE
((0V))
1
((0.7V))
K
MAIN CIRCUIT
F
FL CIRCUIT