Panasonic SA-AK88 Service Manual page 38

SCHEMATIC DIAGRAM-2
:POSITIVE VOLTAGE LINE
1.5V
P-P
F=16.9344MHz
C722
10P
C721 1.6V
10P
1.6V
E
(0.1V) 3.2V
B
R710
10
2.4V
L
A
(1.2V) 0.2V
1.7V
R741 47K 1.7V
1.7V
R742
220K
PLAY
2ms. 0.1V/DIV.
A B C D
TP1 TP3 TP4
S701
(REST)
TP2
7.8V
1
2 3 4 5
TP16
:CD-DA/V-CD(AUDIO & VIDEO) SIGNAL LINE
N M
C731
6.3V220
C730
0.1
61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80
3.3V
V
60
DD
X2 OUT
59
0.6V
X1 IN
58
P-P
57 Vss
0V
T
SBCK F=16.9344MHz
56
SUBC PLAY
55
VCOF2
54
53 PCK
384FS T 13.3ms.
52 IC702
AVss2 MN662790RSC
51
3.3V
AV 2 SERVO PROCESSOR/
50 DD
0V
DIGITAL SIGNAL PROCESSOR/
VCOF
49
DIGITAL FILTER/
48 PLLF PLAY
D/A CONVERTER
DSLF
47
PLAY
DRF
46
1V
IREF T
45
0.9V
P-P
44 ARF
PLAY
WVEL
43
0.5 s. 0.2V/DIV.
1.7V
DSLF2
42
PLLF2 T
41
40 39 38 37 36 35 34 33 32 31 30
0.6V
P-P
A B C D E F G H I
E F G H I J K
TP5 TP6 TP7 TP8 TP12 TP13 TP14
TP15
6 7 8 9 10 11 12 13
R717 R719
100 0
PLAY
2.2V
P-P
1kHz, 0dB
R718 R720
100 0
5.1V 3.3V
1.6V
BCLK
1
1.6V
PLAY LRCK
2
3.2V
0V (2.4V)
SRDATA
3
3.3V
DV 1 4
DD
0V
13.3ms.
DVss1
5
0V
TX
6
3.2V 3.2V (2.9V)
MCLK
7
0V
MDATA 8
0V
3.2V
MLD
9
PLAY
SENSE
10
3.2V
/FLOCK
11
0V
/TLOCK
12
F=75Hz
0V
BLKCK 13
3.2V
3.2V
SQCK
14
3.3V
SUBQ
15
0V
13.3ms. DMUTE
16
0V (3.3V)
STAT 17
3.2V 3.2V
/RST
18
SMCK
19
0V
13.3ms. CSEL
20
29 28 27 26 25 24 23 22 21
PLAY
2ms. 0.1V/DIV.
A B C D E F G
L M N O P
TP18 TP17
TP20 TP19
C743
0.1
14 15 16 17 18 19 20
TO
MAIN(CONTROL)CIRCUIT
(CN307) ON SCHEMATIC
DIAGRAM-18
:CD-DA/V-CD(AUDIO) SIGNAL LINE
3.3V
5V
TP21
A
TP23
B
V
U
T
S
PLAY
3.2V
0V
F=44.1kHz
PLAY
R
P
Q 0.2 s. 1V/DIV.
O
K
J
I
H
G
F
R753
10
D
C
0.2V
P-P
Q R S T U V
21 22 23 24 25 26 27 28
3.2V
0V
C753
470P
3.3V
B
A
CN702
29 30