Schematic Diagram-6 - Panasonic SA-AK78 Service Manual

SA-AK78

SCHEMATIC DIAGRAM-6

E
D
Q1218
DTA114EKAT146
MOTOR DRIVE
4.9V
((0V))
C
((4.9V))
0V
A
B
:NEGATIVE VOLTAGE LINE
:POSITIVE VOLTAGE LINE
14.8V
Z1101
1 2
C
H
F
E
D
B
((0V))
1 2
((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
3 4 5 6 7
5V
5.1V
R1215 2.2K
R1216 2.2K
4.9V
((0V)) ((4.6V)) ((0V)) ((0V))
3 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
SOLENOID DRIVE
32
H1100
M.GND
1
MO.GND
2
MO +B
3
14.2V
4 D.GND
R1144
+B(3)
5
10K
B Rch IN
6
A 7 Lch IN
R1143 A.GND
8
10K
D Rch OUT
9
C Lch OUT
10
TP10 TP9
CN1201
SW5V
1
2 SER1
SER4
3
VREF-
4
TPS
5
6 DECK1
DECK2
7
VREF(+)
8
W1200
14.2V 2
Q1203
2SD965RTA
MOTOR DRIVE
R1206
((0V))
220
1
((0.7V))
K
To MAIN CIRCUIT
(CN100)
on SCHEMATIC
DIAGRAM-12
F
To FL CIRCUIT
(H601)
on SCHEMATIC
DIAGRAM-9
M
MOTOR