Panasonic SJ-MD150 Servise Manual page 80

SCHEMATIC DIAGRAM-9
E
MAIN CIRCUIT
DIGITAL
OPTICAL
D715
1SS254TA
1
JK703
2
IN1
3
D716
1SS254TA
1
JK704
2
IN2
3
1
JK702
2
OUT
3
CN401
F2 1
-VP 2
F1 3
GND 4
+B(1) 5
+B(2) 6
SELCONT2 7
SELCONT1 8
C
To
NC 9
FL CIRCUIT
CSSP 10
(CN901)
REQPS 11
on SCHEMATIC
SYSRST 12
DIAGRAM-8
ACDET 13
LOADSW 14
PW DA/AD 15
MUTE 16
DATASP 17
CLKPS 18
P.CONT 19
DATAPS 20
CN402
VREF- 1
KEY1 2
KEY2 3
LED1 4
TX 5
LED3 6
RX1 7
RX2 8
REQ 9
CS 10
CLK 11
DATAI 12
DATAO 13
A
To
SYSRST 14
MD SERVO
HEAD+5V 15
CIRCUIT(CN4)
D.GND 16
on SCHEMATIC
NC 17
DIAGRAM-6
LOAD SW 18
L+5V 19
D+3.3V 20
M+5V 21
SWS 22
M.GND 23
M.GND 24
SCL 25
SDAR 26
A+3.3V 27
SDAP 28
DA.GND 29
DEO 30
:POSITIVE VOLTAGE LINE
:NEGATIVE VOLTAGE LINE
Q454
4.9V 5V
0V
Q454,455
DTA143ESATP
POWER SUPPLY
Q455
0V 5V
4.9V
5V
-30.6V
D318
1SS291TA
4.9V
4.9V
D317
1SS291TA
R408 270
Q403
0V 4.9V
2.6V 0V
10K 10K
10K 10K
Q401 0V
3.3V
10K
10K
Q402
R406
270
N
O
P
R407 1K
Q
R
S
T
5V U
5V V
W
X
Y
R404
270
Z
:MD PLAYBACK SIGNAL LINE
:MD RECORDING SIGNAL LINE
0V
N
0V
4.5V
E 10
3.1V
P 11
4.7V
J 12
3.1V
13
S
4.9V
4.9V 14
A
B
C
D
E
F
3.3V
G
H
1.1V
1.7V
I
J
K
3.3V
L
M
4.8V
F
E
Q401-403
DTC114ESATP
SWITCHING
IC304
S81233SGY-Z
REGULATOR
OUT
C404
0.1
3.3V
5V
IC401
TC74HCT7007A
INTERFACE
8 7
GND
R411
1K
2.5V
9 6
1.7V
5
0V R410
1K
0V (1.5V)
4
0V
0V (1.1V)
3
R409
1K
2.3V
2
1.6V
V 1
CC
X Z W
IC402
TC74HC4050EL
INTERFACE
1 V NC 16
CC
3V
2 15 O
4.2V
3 14 F
4 NC 13
3.2V
5 12 Q
4.6V
6 11 K
3.3V
7 10 R
4.7V
8 GND 9 M
G
T
Y
IN GND
1 2 3
3.3V 5V
5V
A
C
B
D