Panasonic CQDF783U - AUTO RADIO/CD DECK, Service Manual

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Pin
No.
Port Description I/O (V)
FM AM CD
1 CH SENS CD changer detect I 0.8 0.7 0.7
2 SD/ST Radio station
detect I 5.1 5.1 5.1
3 EJECT Eject SW I 5.2 5 5.2
4 AVSS Ground - 0 0 0
5 EXT.MUTE External mute O 0 0 5.1
6 CDC 1/2 (Ground pull down) - 0 0 0
7 AVREF1 (Conecting to +5V) - 5.2 5.2 5.2
8 SUB SO LCD data I 5.1 5.1 5.1
9 LCD DI LCD data O 0 5.1 5.1
10 SUB SI LCD clock O 5.1 5.1 5.1
11 CH DATA (Ground pull down) - 0 0 0
12 CD OSC CD Osc stop O 5.2 5.2 0
13 CH CLK (Ground pull down) - 0 0 0
14 CH REM (Ground pull down) - 5.2 5.2 5.2
15 BZ OUT Buzzer signal
output O 0 0 0
16 CD SO CD data output I 5 5 0
17 CD SI CD data input O 0 0 0
18 CD SCK CD clock O 5.2 5 5.2
19 LCD CE LCD chip enable O 0 0 0
20 CD RST CD reset O 0 0 5.2
21 AMP CNT Amp control signal O 5.2 5.1 5.2
22 ANT CNT ANT control signal O 5.2 5.2 0
23 AMP MUTE Amp mute control O 5.2 5.2 5.2
24 CD STB CD strobe O 0 0 5.2
25 CD A0 CD A0 O 0 0 4.6
26 CD RFOK RF OK signal I 0 0 5
27 CD LOCK CD lock signal I 0 0 5
28 CD LIMIT CD limit switch
signal I 0 0 5
29 CD SW1 CD SW1 0 0 0
30 CD SW2 CD SW2 I 5.2 5 0
31 SPEANA A - O - - -
32 SPEANA B - O - - -
33 VSS1 Ground - 0 0 0
34 SPEANA C - O - - -
35 ILL CNT Illumi. Control O 0 0 0
36 SCL Audio control
serial clock O 5.2 5.2 5.2
37 SDA Audio control data O 5.2 5.2 5.2
38 S LED S LED drive signal O 0 0 0
39 EJ ILL Eject Led drive
signal O 5.2 5.2 5.2
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