Read Panasonic CQ-LT1180TA Service Manual online
6.1. Main Block
IC601 : C2BBGE000580
Pin
No.
Port
Description
I/O
(V)
1
LCD-CL
Clock for LCD data
O
0
2
LCD-DI
LCD data
O
0
3
SEC TIME
No connection
-
-
4
GND
Ground
-
0
5
LCD.ON
Not used
-
-
6
ILL.ON
Not used
-
-
7
VDD
+5V power supply
-
5
8
SEC ON
Not used
-
-
9~12
-
Not used
-
-
13
M1-B
Tape main motor control
O
0
14
M1-A
Tape main motor control
O
0
15
-
(Connecting tp ground)
-
0
16
-
(Connecting tp ground)
-
0
17
POM SO
Not used
-
-
18
ROM SI
Not used
-
-
19
ROM CS
Not used
-
-
20
ROM CSK
Not used
-
-
21
LATH
Data latch
O
5
22
A/B
Tape FF/REW switch
I
0
23
/MTL
Metal tape mode
O
5
24
DATA
Data for system power IC
O
0
25
CLK
Clock for system power IC
O
0
26
STBY
System power IC stand-by
O
5
27
/MS
TPS no sound detection
I
0
28
MS PL/FF
MS mode selection
O
0
29
T.LOAD
Tape loading detection
I
0
30
/DOLBY
Dolby control
O
0
31
CAM-A/B
Tape side detection
I
5
32
/T.IN
Tape insert detection
I
0
33
GND
Ground
-
0
34
TE2
Tape end detection
I
1.8
35
TE1
Tape end detection
I
2.2
36, 37 DIV1,2
Not used
-
-
38
/M2F
Tape solenoid control
O
0.5
39
SEC LED
Not used
-
-
40
MSM
MS gain control
O
0
41
/EQ
Metal tape detection
I
0
42
BIT3
Tape moe SW
I
0
43
BIT2
Tape mode SW
I
4.9
44
BIT1
Tape mode SW
I
4.9
45
MUTE
Mute output
O
0
46
BEEP
Beep output
O
0
47
VOL DAT
Data for electronic vol.
O
0
48
VOL CLK
Clock for electronic vol.
O
0
49
NC
No connection
-
-
50
TEST
(+5V pull-up)
-
4.2
51
MAIN
Not used
-
-
52
PLL.DO
PLL data
I
4.9
53
PLL.CLK
PLL clock
O
0
54
PLL.DI
PLL data
O
0
55
PLL.CE
PLL chip enabling
O
0
56
LAN-OUT
LAN data
O
0
57
LAN-IN
LAN data
I
0.2
58
ST
FM stereo detection
I
0
59
SD
B/S detection
I
0
60
/RESET
System reset
I
3.5
61
/ILL-DET
illumi. on detection
I
3.5
62
+B-DET
Battery level detection
I
3.2
63
ACC-DET
ACC level detection
I
3.4
64
/T.EJECT
Tape eject
I
3.4
65
AN NK
Not used
-
-
66
MODE B
Not used
-
-
67
MODE A
Not used
-
-
68
VDD
+5V power supply
-
4.9
69
X1
Crystal oscillatorv terminal
-
2.4
70
X2
Crystal oscillatorv terminal
-
0.6
71
GND
Ground
-
0
72
XT2
Not used
-
-
73
XT1
Not used
-
-
74
AVDD
+5V power supply
-
5
75
ACC 5V
+5V power supply
-
5
76
VSM
Not used
-
-
77
MAIN-VOL
Main volume level
I
0
78
REO.IN
(Ground pull-down)
-
0
79
LCD-DO
LCD data
I
4.9
80
LCD-CE
LCD driver enabling
O
0
6.2. Display Block
IC601 : YEAMLC75853
Pin
No.
Port
Description
I/O
(V)
1-20 SEG1-20
LCD segment data
O
2.6
21-28
-
Not used
-
-
29-40 SEG29-40
LCD segment data
O
2.6
41-43 COM1-3
LCD common output
O
2.6
44
S41
Not used
-
-
45-49 KS1-6
Key scan signal
O
5.2
50
KI1
Not used
-
-
51-54 KI2-5
Key data input
I
0
55
TEST
(Connecting to ground)
-
0
56
VDD
+5V power supply
-
5.2
57
VDD1
Ground through capacitor
-
3.5
58
VDD2
Ground through capacitor
-
1.8
59
VSS
Ground
-
0
60
OSC
CR oscillator
-
4.1
61
DO
key data output
O
5.2
62
CE
Chip enable
I
0
63
CLK
LCD clock
I
0
64
DI
LCD data input
I
0
6 TERMINALS DESCRIPTION
6
CQ-LT1180TA
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