Panasonic CQ-MX0470LC Service Manual ▷ View online
5 BLOCK DIAGRAM (Main, Display Block)
5
SUZUKI / CQ-MX0470LC
6.1. Main Block
IC601 : C2CBKH000107
Pin
No
Port
Descriptions
I/O FM
(V)
AM
(V)
CD
(V)
1
BEEP
Beep output
O
0
0
0
2
PW-SCK
Clock output for power IC
O
0
0
0
3
PW-DATA
Data output for power IC
O
0
0
0
4
PW-LATCH Latch signal for power IC
O 5.0 5.0 4.8
5
PW-STBY
STBY output for power IC
O 5.0 5.0 4.9
6
PW-STBY2
STBY2 output for power IC
O 5.0 5.0 4.9
7
AMP-STBY
H: Amp on L: Amp off
O 5.0 5.0 4.8
8
MUTE
H: Mute on L: Mute off
O
0
0
0
9
WDT-CLK
-
O
0
0
0
10
FAN-ON
H: Cool fan on L: Cool fan off O
-
-
-
11
RESET
H: Normal L: When resetting
I
4.9 4.9 4.8
12
XT2
Oscillator (sub)
O
0
0
0
13
XT1
Oscillator (sub)
I
0
0
0
14
GND
Ground
-
0
0
0
15
X2
Oscillator (main)
O 1.5 1.5 1.5
16
X1
Oscillator (main)
I
1.4 1.4 1.4
17
REGOFF
Regulator indication signal
-
0
0
0
18
REGCPU
Regulator volume stability and
the
the
power
when
regulator
stops
-
3.5 3.5 3.5
19
VDD0
Power supply
-
5.0 5.0 5.0
20
RAMJD
-
O
0
0
0
21
NC
Not used
-
-
-
-
22
NC
Not used
-
-
-
-
23
LCD-SW
H: LCD backlight on
O 5.0 5.0 5.0
L: LCD backlight off
24
NC
Not used
-
-
-
-
25
NC
Not used
-
-
-
-
26
LCD-CE
H: On L: Off
O
0
0
0
27
LCD-DO
LC75854 key data
I
5.1 5.1 5.1
28
LCD-CL
LC75854 LCD data clock
O
0
0
0
29
LCD-DI
LC75854 LCD data
O
0
0
0
30
NC
Not used
-
-
-
-
31
NC
Not used
-
-
-
-
32
NC
Not used
-
-
-
-
33
NC
Not used
-
-
-
-
34
SEC-TIMER H: 15s or more past since +B
is turned off
I
5.0 5.0 5.0
L: Less than 15s past since
+B is turned off
+B is turned off
35
SEC-ON
H: Sec-timer reset
O
0
0
0
L: Sec-timer continued
36
NC
Not used
-
-
-
-
37
NC
Not used
-
-
-
-
38
NC
Not used
-
-
-
-
39
NC
Not used
-
-
-
-
40
GND
Ground
-
0
0
0
41
VDD
Power supply
-
5.0 5.0 5.0
42
VOLB
Volume encoder port
I
0
0
0
43
VOLA
Volume encoder port
I
0
0
0
44
NC
Not used
-
-
-
-
45
NC
Not used
-
-
-
-
46
NC
Not used
-
-
-
-
47
NC
Not used
-
-
-
-
48
NC
Not used
-
-
-
-
49
NC
Not used
-
-
-
-
50
RDS-MUTE H: RDSMUTE on
O
0
0
4.8
L: RDSMUTE off
51
ILL-SW
H: Ill on L: Ill off
O 5.0 5.0 5.0
52
WP
H: E2PROM write protecting
I/O 5.1 5.1 5.1
L: E2PROM is writing
Pin
No
Port
Descriptions
I/O FM
(V)
AM
(V)
CD
(V)
53
NC-ON/OFF H: AMNC off
O 5.0
0
0
L: AMNC on
54
AM-MODE
H: AM mode
O
-
-
-
L: Besides AM mode
55
RA-SDA
For tuner and BR24C
I/O 5.1 5.1 5.1
56
ST. LAMP
H: No stereo input
I
5.1 5.1 5.1
L: Stereo input
57
RA-SCL
Clock signal for BR24C and
tuner
tuner
O 5.0 5.0 5.0
58
EVOL SDA
Installed E-VOL data tuner
pack
pack
O
0
0
0
59
EVOL CLK
Installed E-VOL clock tuner
pack
pack
O
0
0
0
60
NC
Not used
-
-
-
-
61
SD
H: No electric field
I
5.1 5.1 5.1
L: Electric field
62
NC
Not used
O
-
-
-
63
DATA CONT Output for reading CD-R
O
0
0
0
64
DATA IN
Input for reading CD-R
I
0
0
0
65
RDS-CL
RDS demodulator clock
I
2.5 2.5 2.5
66
RDS-DATA
RDS demodulator clock
I
3.2 3.2 3.2
67
ILL-CANCEL H: Ill cancel on L: Ill cancel off
I
0
0
0
68
NC
Not used
-
-
-
-
69
NC
Not used
-
-
-
-
70
NC
Not used
-
-
-
-
71
LCD-P
Not used
O
0
0
0
72
NC
Not used
O
0
0
0
73
TEST (Vpp) Ground
-
0
0
0
74
AMNC-IN
AM noise canceller
I
0.6 1.1 0.6
75
Vcont (VSM) Electric field strength
I
0.6 1.8 0.6
76
MP
Multi pass noise input
I
0
0
0
77
NOISE
Neighbor noise obstruction
I
0
0
0
78
NC
Not used
-
-
-
-
79
STSW1
Steering switch 1 reader
I
5.1 5.1 5.1
80
NC
Not used
-
-
-
-
81
NC
Not used
-
-
-
-
82
VDD
Analog
voltage
for
A/D
converter
I
5.0 5.0 5.0
83
AVDD
Standard
voltage
for
A/D
converter
I
5.1 5.1 5.1
84
GND
(AVSS)
(AVSS)
Ground for A/D converter
-
0
0
0
85
DOUT
AVC-LAN data input
I
0
0
0
86
DIN
AVC-LAN data output
O
0
0
0
87
NC
Not used
-
-
-
-
88
TEL-MUTE
H: Tel mode
I
0
0
0
L: Besides tel mode
89
SPD
Pulse count with the starting
edge
edge
I
0
0
0
90
SW1
Interferes when reading the
text:
text:
Same
period
signals
activate when L-->H-->L
I
0
0
0
Besides the above: H:SW1 off
L: SW1 on
L: SW1 on
91
+B-DET
H: +B on L: +B off
I
5.1 5.1 5.1
92
ACC-DET
H: Acc on L: Acc off
I
5.1 5.1 5.1
93
CD-EJ
H: CD-EJ off L: CD-EJ on
I
4.9 4.9 4.8
94
CD-SOM
CD
(IDC)
deck
serial
communication
O 5.1 5.1
0
95
CD-RESET
H: Normal L: Resetting
O 5.0 5.0 4.9
96
CD-ON
H: Communication is possible
with CD (IDC) deck
with CD (IDC) deck
O
0
0
4.8
L:
Communication
is
not
possible with the CD (IDC)
deck
deck
6 TERMINALS DESCRIPTION
6
SUZUKI / CQ-MX0470LC
Pin
No
Port
Descriptions
I/O FM
(V)
AM
(V)
CD
(V)
97
CD-SCKM
CD
(IDC)
deck
serial
communication clock
O
0
0
4.8
98
CD-SIM
"CD
(IDC)
deck
serial
communication
O 4.8 4.8 4.8
H: data "1" L: data "2"
99
SW3
H: SW3 off L: SW3 on
I
5.1 5.1
0
100 ILL-DET
H: Illumi off L: Illumi on
I
0
0
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 : YEAMLC75854T
Pin
No.
Port
Description
I/O
(V)
1
-
-
O
0
2
NC
No connection
-
-
3-39 S3-S39
LCD segment data
O
2.6
40-43 COM1-4
LCD common
O
2.6
44
S40
LCD segment data
O
2.6
45-49 KS2-6
Key strobe
O
5.1
50-53 KI1-4
Key data input
I
0
54
KI5
(Connecting to ground)
-
0
55
TEST
(Connecting to ground)
-
0
56
VDD
+5V power supply
-
5.1
57
VDD1
LCD angle
-
3.4
58
VDD2
LCD angle
-
1.7
59
VSS
Ground
-
0
60
OSC
Oscillator terminal
-
4.0
61
DO
Key data output
O
5.1
62
CE
LCD driver chip enable
I
0
63
CL
Shift clock for LCD data
I
0
64
DI
LCD data input
I
0
7
SUZUKI / CQ-MX0470LC
7 PACKAGE AND IC BLOCK DIAGRAM
7.1. Main Block
IC140: C1EB00000061
IC201: C1BB00000829
8
SUZUKI / CQ-MX0470LC
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