Panasonic CQC7403U - CAR AUDIO - MULTI-LANG, Service Manual

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Pin
No.
Port Part Name &
Description
I/O FM AM CD
92 NC Not connected - - - -
93 SUB RESET Reset for display CPU O 4.9 5 4.9
94 DISPM CONT 5V power control for
Display O 0 0 0
95 NC Not connected - - - -
96 NC Not connected - - - -
97 NC Not connected - - - -
98 S LED Security LED drive O 0 0 5
99 ANT CONT Power control for
antenna motor
O 5.2 5.2 5.2
100 NC Not connected - - - -
10.2. Main Block [CQ-
C7203U/C7103U]
IC601 : C2CBKG000038
Pin
No.
Port Part Name & Description I/O FM AM CD
1 PANEL
OPEN Panel open detection I 0 5.2 5.2
2 PANEL
CLOSE Panel close detection I 0 0 5.2
3 SUBM CNT 3.3V power control for Display O 5 - -
4 BATT Battery power check I 4.8 5 5
5 ACC Acc. power check I 4.8 5 5
6 SDA Serial data for electronic
volume
I/O 4.9 4.9 4.9
7 SCLK Serial clock for electronic
volume
O 4.9 4.9 4.9
8 CD MUTE Signal mute from CD deck I 5 5 5
9 Vss GND - 0 0 0
10 ST FM stereo detection I 5.1 5.2 5.2
11 PLL DI (MO) Serial data to PLL O 0.6 0 0
12 PLL DO (MI) Serial data from PLL I 5.2 5.2 5.2
13 PLL CLK Serial clock for PLL O 4.9 4.9 4.9
14 PLL CE Chip enable for PLL O 0 0 0
15 CD RESET Reset for CD deck O 4.9 4.9 4.9
16 SUB SI Serial data to Display CPU O 0.6 0.6 0.8
17 CD IN Disc-in detection I 5 5 5
18 SUB SO Serial data from Display CPU I 4.4 4.4 4.4
19 CH DATA/
UP SO XM SO/UP SO Serial data
from Changer
I 1.6 1.6 1.6
20 CH CLK/ UP
CLK Serial clock for Changer or
Flash writer I 4.9 4.9 4.9
21 Vdd +5V power supply - 4.9 4.9 4.9
22 XM SI (MO)/
UP SI Serial data to Satellite or
Flash writer
O 0 0 0
23 CD SI (MO) Serial data to CD deck O 0 0 0
24 CD SCLK Serial clock for CD deck I/O 0 0.4 0
25 CONDENSO
R Capacitor connection for
power
- 3.3 3.3 3.3
26 CD SO (MI) Serial data from CD deck I 0 0 0
27 CH STB Strobe from Changer I 0 0 0
28 CH REM
OUT
Remote control codes to
Changer
O 4.9 4.9 0.4
29 DECK V
CONT
Power control for CD deck O 4.9 4.9 4.9
30 REMO INT Not connected - - - -
31 CD FS Frame sync. for CD deck O - - -
32 Avdd +5V power supply - 5.1 5.1 5.1
33 AVREF +5V power supply - 5.1 5.1 5.1
34 AVGND GND - 0 0 0
35 AVSS GND - 0 0 0
36 SD FM/AM signal level meter I 0.2 0 0.3
37 INIT A Model setting A by voltage
level I 0 0 0
38 INIT B Model setting B by voltage
level I 0 0 0
39 A IN Spectrum analyzer data I 0 0 0
40 Vss GND - 0 0 0
41 SYS ID1 Hub connection device
detection ID 1
I 0 0 0
42 SYS ID2 Hub connection device
detection ID 2
I 5.2 5.2 5.2
43 HUB EVENT Bluetooth incoming detection I 5.2 5.2 5.2
44 HUB CNT Request of hub connection
check O 0 0 0
45 CD SW1 Disc detection switch 1 I 0 0 0
46 CD SW2 Disc detection switch 2 I 0 0 0
47 MOD0 Operating mode control 0
from Flash writer
I 5.1 5.1 5.1
48 MOD1 Operating mode control 1:
pulled up to H - 5.1 5.1 5.1
11
CQ-C7403U / CQ-C7303U / CQ-C7203U / CQ-C7103U