Read Panasonic CQ-C3302N Service Manual online
9.1. Main Block
IC601 : YESAM285
Pin
No.
Port
Description
I/O
(V)
FM AM CD
1 (NC)
-
-
-
-
-
2 VSM
Radio signal strength
I
0
0
0
3 SD/ST
Radio station detect
I
0.3
0
0.8
4 AVSS
Ground
-
0
0
0
5 SCL
Audio control serial clock
O
4.9 4.9 4.9
6 SDA
Audio control data
O
4.9 4.9 4.9
7 AVREF
(Conecting to +5V)
-
4.9 4.9 4.9
8 CD SO
CD data output
I
2.1 2.3 1.7
9 CD SI
CD data input
O
0
0
3.3
10 CD SCK
CD clock
O
4.7 4.7 4.7
11 CDC DATA/
XM-TX SO
CD changer data/XM
radio TX signal
radio TX signal
I
0
0
0
12 XM-RX SI
XM radio RX signal
O
4.8 4.8 4.8
13 CDC CLK
CD changer clock
I
0
0
0
14 CDC REM
CD changer remote
O
4.8 4.8 4.8
15 BZ OUT
Buzzer out
O
4.4 4.4 4.4
16 LCD DO
LCD data
I
4.8 4.8 4.8
17 LCD DI
LCD data
O
4.7 4.7 4.7
18 LCD CLK
LCD Clock
O
4.8 4.8 4.8
19 CD AO
CD mute
I
0
0
4.8
20 CD RST
CD reset
O
4.8 4.8 4.8
21 CD STB
CD strobe
I
3.7 3.7 3.7
22 CDC SENS
(NC)
-
-
-
-
-
23 PLL DO
PLL data
I
4.9 4.9 4.9
24 PLL CLK
PLL data clock
O
4.8 4.8 4.8
25 PLL DI
PLL data
O
0
0
0
26 PLL CE
PLL chip select
O
0
0
0
27 (NC)
-
-
-
-
-
28 (NC)
-
-
-
-
-
29 (NC)
-
-
-
-
-
30 (NC)
-
-
-
-
-
31 (NC)
-
-
-
-
-
32 (NC)
-
-
-
-
-
33 VSS1
Ground
-
0
0
0
34 RDS DATA
RDS data
I
2.8
0
0
35 S-LED
LED control
O
0
0
0
36 LCD CE
LCD chip enable
O
0
0
0
37 LCD 5V CNT
Display 5V control
O
0
0
0
38 EJ ILL
LED control (EJ/ILL)
O
4.8 4.8 4.8
39 OP/CL
Panel open/close detect
I
4.9 4.9 4.9
40 (NC)
-
-
-
-
-
41 EJECT
EJECT switch
I
4.9 4.9 4.9
42 ROTARY 1
Rotary encoder input 1
I
4.8 4.8 4.8
43 ROTARY 2
Rotary encoder input 2
I
4.7 4.7 4.7
44 (NC)
-
-
-
-
-
45 (NC)
-
-
-
-
-
46 PANEL
Panel detection
I
4.6 4.6 4.6
47 STBY
Power IC stundby control
O
4.8 4.8 4.8
48 EEPROM CE
(Not Used)
-
-
-
-
49 EEPROM SK
(NC)
-
-
-
-
-
50 EEPROM DI
(NC)
-
-
-
-
-
51 EEPROM DO
(Not Used)
-
-
-
-
52 CDC1/2 (NC)
-
-
-
-
-
53 INV CNT
Illumination control
O
4.8 4.8 4.8
54 AMP CNT
Amp power control
O
4.8 4.8 4.8
55 ANT CNT
Antenna power control
O
4.8 4.8 4.8
56 EXT.MUTE
External mute
O
4.8 4.8 4.8
57 MAIN CNT
Main power control
O
4.8 4.8 4.8
Pin
No.
Port
Description
I/O
(V)
FM AM CD
58 AMP MUTE
Amp mute control
O
4.8 4.8 4.8
59 AF MUTE
AF mute control
O
4.8 4.8 4.8
60 RESET
Reset
I
4.8 4.8 4.8
61 RDS CLK
RDS clock
I
2.8 2.8 2.8
62 (NC)
-
-
-
-
-
63 (NC)
-
-
-
-
-
64 RM DATA
Remote control data
I
4.8 4.8 4.8
65 BATT
Battery voltage detection
I
4.5 4.5 4.5
66 CDC STB/
XM DET
CD Changer strobe/ XM
receiver detection
receiver detection
I
4.8 4.8 4.8
67 VSS0
Ground
-
0
0
0
68 VDD1
+5V power supply
-
4.8 4.8 4.8
69 X2
Crystal oscillator
-
2.9 2.9 2.9
70 X1
Crystal oscillator
-
2.3 2.3 2.3
71 TEST
(TEST terminal)
-
0
0
0
72 XT2
Crystal oscillator
-
2.7 2.7 2.7
73 XT1
Crystal oscillator
-
2
2
2
74 VDD0
+5V power supply
-
4.9 4.9 4.9
75 AVDD
+5V power supply
-
4.8 4.8 4.8
76 INI A
Mode setting A
I
0
0
0
77 INI B
Mode setting B
I
4.8 4.8 4.8
78 ACC
ACC detection
I
4.9 4.9 4.9
79 (NC)
(Connecting to ground)
-
0
0
0
80 LEVEL
Audio signal
I
0
0
0
9.2. Display Block
IC901 : YEAMLC75854T
Pin
No.
Port
Description
I/O
(V)
1-16 SEG1-16
LCD segment data
O
2.5
17-39 SEG19-41
LCD segment data
O
2.5
40-43 COM1-4
LCD common
O
2.5
44,45 SEG17,18
LCD segement data
O
2.5
46-49 KS3-6
Key scan
O
5.0
50-54 Kl1-5
Key data
I
0
55
TEST
(Connecting to ground)
-
0
56
VDD
+5V power supply
-
5.0
57
VDD1
VDD1 filter terminal
-
3.3
58
VDD2
VDD2 filter terminal
-
1.7
59
VSS
Ground
-
0
60
OSC
Oscillator terminal
-
3.9
61
DO
Key data output
O
5.0
62
CE
LCD driver chip enable
I
0
63
CLK
LCD clock
I
4.9
64
DI
LCD data
I
4.9
9 TERMINALS DESCRIPTION
5
CQ-C3302N
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