Read Panasonic CQ-FX323W Service Manual online
13.1. Main Block
IC600 : C2BBGF000142
Pin
No.
Port
Description
I/O
(V)
1
INIT C
Initial C
I
0
2
A-IN
Spectrum analyzer data
I
0
3
SEL CONT
Not used
-
-
4
AVss
Analog ground
-
0
5
AF MUTE
AF mute
O
0
6
EJECT
Eject SW input
I
4.7
7
AVREF
Reference voltage
-
4.8
8
MODE1
Tape mode SW
I
4.7
9
STNBY
Power Amp. stand-by
O
4.9
10
MODE3
Tape mode SW
I
4.7
11
CD.C DATA CD changer data
I
0
12
N.C.
No connection
-
-
13
CD.C CLK
CD changer clock
I
0
14
REM OUT
CD changer remote control
O
4.6
15
PLL CE
PLL controller chip enable
O
0
16
PLL
DATA
(MI)
Data from PLL
I
5.1
17
PLL
DATA
(MO)
Data for PLL
O
0
18
PLL CLK
O
4.8
19
S.HDB(NC)
-
-
-
20
MMT-F
Main motor control
O
0
21
SMT-F
Sub motor control
O
4.8
22
DOLBY
Dolby control
O
4.8
23
F/R
Tape FF/REW detection
I
4.8
24
MS GAIN
MS gain control
O
4.8
25
MTL
Motor tape select
O
0
26
SMT-R
Sub motor control
O
4.8
27
R.REEL
Tape REW detection
I
1.5
28
F.REEL
Tape FF detection
I
1.5
29
MS IN
TPS input
I
0
30
T-IN
Tape in detection
I
0
31
CONT A
Not used
-
-
32
CONT B
Not used
-
-
33
VSS
Ground
-
0
34
CONT C
Not used
-
-
35
ST
FM stereo detection
I
4.7
36
IC2-CLK
Electronic volume clock
O
4.6
37
IC2-DATA
Electronic volume data
I/O
5.2
38
LED
Warming alarm LED control
O
5.2
39
NC
No connection
-
-
40
BZIN
Power ON/OFF detection
I
4.9
41
LCD-DI
LCD data input
O
0
42
LCD-DO
LCD data output
I
4.5
43
LCD-CLK
LCD clock
O
0
44
LCD-CE
LCD chip enable output
O
0
45
NC
No connection
-
-
46
NC
No connection
-
-
47
NC
No connection
-
-
48
NC
No connection
-
-
49
POWER.LE
D
D
Power LED control
O
4.8
50
BZOUT
Not used
-
-
51
INV CONT2
Invertor control
O
0
52
INV CONT1
Invertor control
O
0
53
NC
No connection
-
-
54
NC
No connection
-
-
55
FP OPN/CLS Front panel open/close
I
5.1
56
ILL CONT
Illumi. control
O
4.8
57
PWR CNT
Power control
O
4.8
58
ACC
ACC detection
I
4.4
59
RDS DATA
Not used
-
-
60
/RESET
Reset input
I
4.4
61
REM
Remocon data input
I
4.1
62
BATT
Battery detection
I
4.3
63
EJ.ILL
Eject button illumi.
O
4.9
64
CD.C.STB
CD changer strobe input
I
0
65
MUTE
Mute control
O
0
66
MODE2
Tape mode SW
I
0
67
GND
Ground
-
0
68
VDD
+5V power supply
-
4.8
69
X2
Crystal oscillator
-
2.8
70
X1
Crystal oscillator
-
1.9
71
VSS
Ground
-
0
72
NC
No connection
-
-
73
PANEL
Panel detection
I
0.4
74
AVDD
+5V power supply
-
4.8
75
AVREF
(Connecting to VDD)
-
4.8
76
N.C.
No connection
-
-
77
NC
(Connecting to ground)
-
0
78
SD
B/S detection
I
0.4
79
INIT A
Initial value A
I
0
80
INIT B
Initial value B
I
4.8
Note 1 :
Voltage measuerments are with respect to ground, with a
voltmeter (Internal resistance : 10M ohms.)
voltmeter (Internal resistance : 10M ohms.)
13.2. Display Block
IC901 : YEAMLC75884W
Pin
No.
Port
Description
I/O
(V)
1-51 S3 ~ 53
LCD segment data
O
2.5
52-55 COM1-4
LCD common
O
2.5
56,57 S54,55
LCD segment data
O
2.5
58-61 KS3-6
Key strobe
O
0.9
62-66 KI1-5
Key data
I
0
67
VDD
+5V power supply
-
5.1
68
VLCD
+5V power supply
-
5.1
69
VLCD1
LCD angle
-
3.3
70
VLCD2
LCD angle
-
1.7
71
VSS
Ground
-
0
72
TEST
(Connecting to ground)
-
0
73
OSC
Oscillator terminal
-
3.9
74
/RESET
(Connecting to VCC)
-
5.1
75
DO
Key data output
O
4.1
76
CE
LCD driver chip enable
I
0
77
CLK
LCD clock
I
0
78
DI
LCD data
I
0
79
S1
LCD segment data
O
2.5
80
S2
LCD segment data
O
2.5
13 TERMINALS DESCRIPTION
7
CQ-FX323W
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