Read Panasonic CQ-LT1010X Service Manual online
6.1. Main Block
IC601 : C2BBGF000087
Pin
No.
No.
Port
Descriptions
I/O
Vol.
(V)
1
STBY
Voltage generator stand-by
O
4.9
2
LATCH
Voltage generator data latch
O
4.9
3-5
NC
No connection
-
-
6
MUTE
Mute
O
0
7
DATE
Voltage generator data
O
0
8
CLK
Voltage generator clock
O
0
9
EQ
Metal tape detection
I
0
10
BIT3
Tape mode SW
I
4.9
11
BIT2
Tape mode SW
I
4.9
12
BIT1
Tape mode SW
I
0
13
VOL CLK
Clock for electronic volume
O
0
14
VOL DATA
Data for electronic volume
O
0
15
RIN
Tape motor control
O
0
16
FIN
Tape motor control
O
0
17
-
Not used
-
-
18
IFZ
(Connecting to ground)
-
0
19
DX/OC
Not used
-
-
20
ST
FM stereo detection
I
0
21
SSC
Search stop clear
O
0
22
SD
B/S detection
I
0
23
REO-IN
Illumi. (-) detection
5.0
24
ACC-DET
ACC level detection
2.0
25
+B-DET
Battery level detection
1.7
26
ILL-DET
Illumi.(+) detection
2.3
27
VDD
+5V power supply
-
4.9
28
VSM
(Connecting to ground)
-
0
29
MAIN VOL
(Connecting to ground)
-
0
30
GND
Ground
-
0
31
GND
Ground
-
0
32
AVSS
Ground
-
0
33
REGCPU
Bypass capacitor terminal
I
3.4
34
VDD1
+5V power supply
-
4.9
35
REGOSC
Bypass capacitor terminal
I
4.9
36
X2
Crystal oscillator
-
1.9
37
X1
Crystal oscillator
-
1.8
38
GND0
Ground
-
0
39
NC
No connection
-
-
40
GND2
Ground
-
0
41
AM IF
AM IF input
I
1.8
42
FM IF
FM IF input
I
2.0
43
VDD PLL
+5V power supply
-
4.9
44
FM OSC
FM local oscillator
I
2.3
45
AM OSC
AM local oscillator
I
0
46
GND PLL
Ground
-
0
47
EO0
PLL phase-comp. error
O
1.6
48
NC
No connection
-
-
49
IC
(Connecting to ground)
-
0
50
RESET
Reset input
I
4.5
51
VOL B
Rotary encoder data for volume
I
4.8
52
VOL A
Rotary encoder data for volume
I
4.8
53
RESMON
Reset output (Vdd=4.5V)
O
4.9
54
LCD-DO
LCD data
I
4.9
55
LCD-DI
LCD data
O
0
56
LCD-CE
LCD driver chip enable
O
0
57
LCD-CLK
LCD clock
O
0
58
SIMUKE1
Destination setting
I
0
59
BEEP
Beep output
O
0
60
SIYOU
Specification setting
I
4.4
61
PWM ILL
ILL power control
O
7.3
62
PWM LCD
LCD power cotrol
O
7.3
63
M2F
Main motor control
O
0
64-68 NC
No connection
-
-
69
SO
Not used
-
0
70
SI
Not used
-
0
71, 72 NC
No connection
-
-
73
D.IN
LAN data
O
0
74
D.OUT
LAN data
I
0
Pin
No.
No.
Port
Descriptions
I/O
Vol.
(V)
75
NC
No connection
-
-
76
MODE B
Rotary encoder for mode SW
I
4.8
77
MODE A
Rotary encoder for mode SW
I
4.8
78
TAPE EJ
Tape eject SW
I
4.5
79
CD EJ
Not used
-
-
80
INTERS
Reset input (Vdd=4.5V)
I
4.9
81
SIMUKE2
Destination setting
I
4.9
82
GND1
Ground
-
0
83-86 NC
No connection
-
-
87
MS-PL/FF
MS mode selection
O
0
88
CAM A/B
Tape side detection
I
0
89
MTL
Metal tape mode on/off
O
0.5
90
DOLBY
Dolby control
O
5.0
91
MS OUT
TPS detection
I
0.6
92
MSM
MS gain control
O
0
93
AMP-ON
Amp power control
O
4.9
94
T.IN
Tape detection
I
0
95
T.LOAD
Tape loading detection
I
0.6
96
A/B
Tape side SW
I
0
97
END A
Tape end detection
I
2.8
98
END B
Tape end detection
I
2.5
99
VDD
+5V power supply
-
4.9
100
GND
Ground
-
0
Note :
Voltage measuerments are with respect to ground, with a
voltmeter (Internal resistance : 10M ohms.)
voltmeter (Internal resistance : 10M ohms.)
6.2. Display Block
IC901 : C0HBA0000016
Pin
No.
No.
Port
Descriptions
I/O
Vol.
(V)
1-33
SEG1-33
LCD segment data
O
2.5
34-40 SEG34-40
Not used
-
-
41-43 COM1-3
LCD common
O
2.5
44
KS1/S41
Not used
-
-
45-49
KS2-9
Key scan
O
0.9
50-54 KI1-5
Key data
I
0
55
TEST
(Connecting to ground)
-
0
56
VDD
+5V power supply
-
5.1
57
VDD1
Ground
through
capacitor
terminal
-
3.3
58
VDD2
Ground
through
capacitor
terminal
-
1.7
56
Vss
Ground
-
0
60
OSC
CR oscillator terminal
-
3.9
61
DO
LCD data
O
4.4
62
CE
LCD driver chip enable
I
0
63
CL
Clock for LCD
I
0
64
DI
LCD data
I
0
6 TERMINALS DESCRIPTION
5
CQ-LT1010X
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