Read Panasonic CQ-JM8480K Service Manual online
Pin
No.
Port
Descriptions
I/O
FM
AM
CD
93
BATT DET BATT detection input H:+B
ON from vehicle
I
4.8
4.7
4.7
94
NC
(VDD pull-up)
I
4.8
4.8
4.8
95
SIG IN
-
-
-
-
-
96
SIG OUT
-
-
-
-
-
97
RADIO. ON Radio power supply control
output H: Radio power
supply ON
supply ON
O
4.8
4.8
0
98
ANT.
CONT
CONT
Antenna output H:ANT ON
O
4.7
4.7
0
99
BEEP
BEEP output 3kHz 100ms
O
0
0
0
100 VOL ENB
Input B of VOL rotary
encoder
encoder
I
0
0
0
7.2. Display Block
IC901 : YEAMLC75853
Pin
No.
No.
Port
Descriptions
I/O
Vol
(V)
(V)
1-3
SEG1-3
LCD segment data
O
2.5
4, 5
-
Not used
-
-
6-15
SEG13-4
LCD segment data
O
2.5
16-26
-
Not used
-
-
27-37 SEG14-24
LCD segment data
O
2.5
38-40
-
Not used
-
-
41-43 COM1-3
LCD common output
O
2.5
44-47 KS1-4
Key scan signal
O
5.0
48
-
Not used
-
-
49
KS6
Key scan signal
O
5.0
50-53 KI1-4
Key data input
I
0
54
-
Not used
-
-
55
TEST
(Connecting to ground)
-
0
56
VDD
+5V power supply
-
5.0
57
VDD1
Ground through capacitor
-
3.3
58
VDD2
Ground through capacitor
-
1.7
59
VSS
Ground
-
0
60
OSC
CR oscillator
-
3.9
61
D2
key data output
O
5.0
62
CE
Chip enable
I
0
63
CLK
LCD clock
I
0
64
D1
LCD data input
I
0
7
MAZDA / CQ-JM8480K
Click on the first or last page to see other CQ-JM8480K service manuals if exist.