Panasonic SA-AK88 Service Manual page 27

SCHEMATIC DIAGRAM-20
TO
VIDEO CIRCUIT(CN1000)
ON SCHEMATIC DIAGRAM-10
30
29 28 27 26 25 24 23 22 21 20 19 18
V h S b T a d e f G F E H D i g C
D352,353
RL1N4003S-P
D352 D353
Q351
KTC3199GRTA
Q302 STABILIZER
KRA110STA
R486
POWER ON DET
1.2K
5V 4.8V
0V
R490
1K
R380 D348
1SS355TE17
22K
R354
47K
D346
1SS355TE17
K
R376
1K
N
2
R377
4.7K
Q301
KRC111STA
R352
SWITCHING
4.7K
0V
R381
10K
:POSITIVE VOLTAGE LINE
:NEGATIVE VOLTAGE LINE
17 16 15 14 13 12 11 10 9 8 7 6 5 4
R375
100
A
R366 220
B
C
D
B A
Q350
2SB1566E
REGULATOR
7.6V 5V
6V
6V
3.5V
D350
3V
D351
D350,351
1SS355TE17
Q345,347
2SC3311ARTA
Q345
INTERFACE
R489
0.7V
4.7K
0.3V
Q347
R350
0.7V
4.7K
0V
R345
R349
100
Q346
2SC3311ARTA
INTERFACE
1.6V
0.6V
HALT
25
CNVS
26
5V
RST
27
X300
28 NC
(6MHz)
NC
29
1
2.1V
30 CFI
2.3V
R384 CFO
31
1K
3 V
32 SS
LD CLR
33
LD STB
34
LD CLK
35
LD DATA
36
0V
37 PWCNT
CSEL2
38
39 CSEL1
CSEL3
40
S300
(VIDEO OUT SWITCH)
R383
NTSC PAL
1K
0V
:CD-DA/V-CD(AUDIO) SIGNAL LINE
:CD-DA/V-CD(AUDIO&VIDEO) SIGNAL LINE
JK301
VIDEO OUT
3 2 1
CN308
C372
0.47
C364
6.3V470
IC305
BA033T
REGULATOR
OUT GND IN
3 2 1
3.3V 5V
M L R C A J B
47K
24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9
IC307
M38067MC435
SYSTEM CONTROL
41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56
A B C D E F G H
D301
UDZSTE175R1B
D303
UDZSTE175R1B
C369 0.01
B
IC309
TC7W14FTE12L
IC306
INVERTER
BA033T
REGULATOR
2.5V
D 5
2.4V
OUT GND IN
6
C
3 2 1
3.3V 5V
2.4V
7
A
5V
8
Q W
R388 100
R390 100
R392 100
R394
100
R395 100
R396
100
8 7 6 5 4 3 2 1
80
NC
79
NC
78
NC
77
KEY2
76
KEY1
75
VREF-
74
VREF
73
V
DD
72
MCLK
71
MDATA
70
MLD
69
STAY
68
SRVRST
67
REST SW
66
NC
65
NC
57 58 59 60 61 62 63 64
:V-CD(VIDEO) SIGNAL LINE
Q363
2SD2144STA
MUTING
R364
0V
1K
0V
Q364
KRA102STA
MUTING CONT.
0V
4.9V
5V
C371
0.1
GND
4
2.5V
3
2.4V
2
2.4V
1
V
CC
H I D E G F
R386
4.7K
R387 47K
R389 47K
R391 47K
R393 47K
R397 10K
R398 10K
5V
5V
R463
22K
5V
5V
4.9V
Z
0V
Y
4.9V
X
0V (4.8V)
P
4.8V
U
5V
O
5V
10.4V
14.8V
-7.9V
7.7V
5.1V