CQ-SS0070FA — Panasonic Car Audio Service Manual (repair manual). Page 5

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IC601 : LC72322N9A06
Pin
No.
Name
Description
I/O
Volt (V)
FM
AM TAPE
1
XIN
4.5MHz X´tal Oscillator
I
2.3
2.3
2.3
2
TEST2
(Connect to Ground)
-
0
0
0
3
A/B
Tape Direction H:A
Side
I
0
0
4
4
F/R
Tape FF/REW Signal
I
0.4
0.5
5
5
NC
Ground
-
0
0
0
6
ST
Streo Indicator Signal
Input
I
0
7.6
0
7
RADIO
Radio On Signal
O
0
0.9
8.2
8
FM
Radio Band Select
O
0
8.1
8.2
9
NC
-
-
-
-
-
10
MONO
FM MONO Switch
O
0
0
0
11
PWR-CNT
Power ON/OFF Output
L:OFF H:ON
O
0
5
5.1
12
SDA
Electronic Volume
Data Output
O
4.9
5.1
5.1
13
SCK
Electronic Volume
Clock
O
4.9
5.1
5.1
14
SSC
Tuner Search Output
I
0
0
0
15
NC
-
-
-
-
-
16
TAPE
Tape Mode Detect
I
0
0
5.6
17
NC
-
-
-
-
-
18
NC
-
-
-
-
-
19
MUTE
Mute Output
O
5
5.1
5.1
20
SYS-CNT
System ON/OFF
Output L:OFF H:ON
O
0
5.1
5.1
21
KS9 (NC)
-
-
-
-
-
22
KS8 (NC)
-
-
-
-
-
23
KS7 (NC)
-
-
-
-
-
24
KS6 (NC)
-
-
-
-
-
25
KS5
Key Scan Output
O
0
0
0
26
KS4
Key Scan Output
O
0
0
0
27
KS3
Key Scan Output
O
0
0
0
28
KS2
Key Scan Output
O
0
0
0
29
KS1
Key Scan Output
O
0
0
0
30
KS0
Key Scan Output
O
0
0
0
31
VDD
Connect to 5V
-
5.1
5.1
5.1
32
KI3
Key Scan Input
I
0
0
0
33
KI2
Key Scan Input
I
0
0
0
34
KI1
Key Scan Input
I
0
0
0
35
KI0
Key Scan Input
I
0
0
0
36
S28 (NC)
-
-
-
-
-
37
S27 (NC)
-
-
-
-
-
38
S26 (NC)
-
-
-
-
-
39
S25
LCD Segment Output
O
2.5
2.5
2.5
40
S24
LCD Segment Output
O
0
2.5
2.5
41-63 S23-S1
LCD Segment Output
O
2.5
2.5
2.5
64
COM2
LCD Common2
O
2.5
2.5
2.5
65
COM1
LCD Common1
O
2.5
2.5
2.5
66
TELIN
(Connect to 5V)
-
5
5.1
5.1
67
HOLD
ACC Detect
I
4.4
4.4
4.4
68
RES
(Connect to 5V)
-
5
5.1
5.1
69
ADI
FM/AM VSM
I
0
0
0
70
AM/FM IF
FM/AM IF Counter
Input
I
0
2.4
0
71
NC
Ground
-
0
0
0
72
SNS
+5V Detect
I
5
5
5
73
VDD
Connect to 5V
-
5
5
5.1
74
AM/FM OSC FM/AM Local OSC
Input
I
0
2.5
0
75
NC
(Connect to Ground)
-
0
0
0
76
GND
Ground
-
0
0
0
77
EO1
PLL Phase Detector
Output
O
3.7
1.3
1.3
Pin
No.
Name
Description
I/O
Volt (V)
FM
AM TAPE
78
EO2 (NC)
-
-
-
-
-
79
TEST1
(Connect to Ground)
-
0
0
0
80
XOUT
4.5MHz X´tal Oscillator
O
2.4
2.4
2.4
7 TERMINALS DESCRIPTION
5
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