Panasonic CQC1401U - AUTO RADIO/CD DECK, Service Manual

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9.1. Main Block
IC601 : YESAM276
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 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 (NC) - - - - -
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 MUTE 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
(NC)
- - - - -
35 S-LED (NC) - - - - -
36 LCD CE LCD chip enable O 0 0 0
37 LCD 5V CNT Display 5V control O 0 0 0
38 (NC) - - - - -
39 (NC) - - - - -
40 (NC) - - - - -
41 (NC) - - - - -
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
(NC)
- - - - -
49 EEPROM SK
(NC)
- - - - -
50 EEPROM DI
(NC)
- - - - -
51 EEPROM DO
(NC)
- - - - -
52 (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
Pin
No.
Port Description I/O (V)
FM AM CD
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
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 (NC) - - - - -
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 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 (Connecting to ground) - 0 0 0
9.2. Display Block
IC901 : YEAMLC75854T
Pin
No.
Port Description I/O (V)
1-35 SEG1-35 LCD segment data O 2.5
36-39 NC - - -
40-43 COM1-4 LCD common O 2.5
44 KS1 Not used - -
45-49 KS2-6 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-C1401U / CQ-C1301U