Read Panasonic CQ-EH8480K Service Manual online
Pin
No.
Port
Descriptions
I/O
FM
(V)
AM
(V)
CD
(V)
78 SIYOU4-
A
Specification setting
I
5.1
5.2
5.2
79 SIYOU5-
A
Specification setting
I
0
0
0
80 SIYOU6-
A
Specification setting
I
0
0
0
81 ILL-IN
ILL detection
H: ILL on L: ILL off
H: ILL on L: ILL off
I
0
0
0
82 AVDD
+5V power supply
-
5.2
5.2
5.2
83 AVREF1 Analog reference voltage
-
5.2
5.2
5.2
84 AVSS
Ground
-
0
0
0
85 (IE-BUS-
RX)
IE-BUS data
I
-
-
-
86 (IE-BUS-
TX)
IE-BUS data
O
-
-
-
87 NC
No connection
I
-
-
-
88 REMO-
DATA
Remote controller data
I
5.1
5.1
5.2
89 ILL-
DET(ILL-
)
)
ILL-detection
I
0
0
0
90 SPEED
+5 pull-up
I
-
-
-
91 GA-
INPUT
+5 pull-up
I
-
-
-
92 ACC-
DET
ACC level detection
H: ACC on L: ACC off
H: ACC on L: ACC off
I
5.1
5.2
5.2
93 EJECT-
SW
Eject switch input
H: All buttons open
L: Some buttons pressed
H: All buttons open
L: Some buttons pressed
I
5.1
5.2
5.2
94 (MD-SI)
Condition change for speed
notice H:50msL:20ms
notice H:50msL:20ms
I
-
-
-
95 FLASH-
RX
Usually at low output
O
-
-
-
96 FLASH-
TX
Usually at low output
O
-
-
-
97 (MD-
CLK)
ADLC on/off
H: ADLC on L: ADLC off
H: ADLC on L: ADLC off
O
-
-
-
98 (MD-SO) Mute control when ADLC goes
on & off
H: mute on L: mute off
H: mute on L: mute off
O
-
-
-
99 BEEP
Beep output
O
0
0
0
100 (MD-ON) Sys-acc control
H: acc on L: acc off
O
-
-
-
Note : Voltage measuerments are with respect to ground, with
a voltmeter (internal resistance : 10M ohms).
a voltmeter (internal resistance : 10M ohms).
6.2. Display Block
IC903 : YEAMPD32B015
Pin No.
Name
Description
I / O Vol.(V)
1
IDCH GREEN
LED
LED
-
-
5.2
2
IDCH RED LED
-
-
5.2
3,4
NC
No Connection
-
-
5
VSS
(Connecting to Ground)
-
0
6
VLC5
LCD Control Voltage 5
I
0
7
VLC4
LCD Control Voltage 4
I
2.2
8
VLC3
LCD Control Voltage 3
I
4.2
9
VLC2
LCD Control Voltage 2
I
4.2
10
VLC1
LCD Control Voltage 1
I
6.2
11
VLC0
LCD Drive Voltage
I
8.2
12
VDD
(Connecting to +5V)
-
5.2
13
SYNC
Syncronize Input
-
5.2
14
LCD OFF
LCD Control (LCD Off)
I
4.7
15
RESET
Reset
I
5.2
16
KEY REQ
Key Request Output
O
0
17
SCK
Shift Control Clock Input
I
0
18
DATA
Data In/Out
I/O
5.2
19
STB
Strobe Input
I
0
20
OSC IN
Oscillator Input
I
2.7
21
OSC OUT
Oscillator Output
O
3.0
22 - 25 KEY1 - KEY4
Key Scan Input
I
1.7
26 - 31 SEG1A/KS1 -
SEG6A/KS6
Segment/Key Scan Output
O
4.2
32 - 90 SEG7A -
SEG65A
Segment Output
O
4.2
91,92
COM9 COM8
(NC)
(NC)
No Connection
-
-
93 -
100
COM7A -
COM0A
COM0A
Common 7A - 0A
O
3.5
IC904 : C0HBA0000093
Pin No.
Port
Descriptions
I/O
(V)
1-73
SEG1B-
SEG73B
SEG73B
LCD segment
O
3.6
74-77
COM4-COM1
LCD common
O
3.6
78-83
-
No Connection
-
-
84-88
KI1-KI5
Ground
-
0
89
VDD
Power supply +5V
-
5.2
90
VLCD
LCD drive reference
voltage(VDD)
voltage(VDD)
I
7.1
91
VLCD1
LCD drive reference voltage
1
1
4.8
92
VLCD2
LCD drive reference voltage
2
2
2.5
93
VSS
Ground
-
0
94
TEST
Ground
-
0
95
OSC
CR Oshiretar
I
0
96
RES
-
-
4.8
97
DO
LCD data
O
5.2
98
CE
LCD chip enable
I
0
99
CL
LCD clock
I
0
100
DI
LCD data
I
4.0
8
HONDA / CQ-EH8480K
Click on the first or last page to see other CQ-EH8480K service manuals if exist.