Panasonic CQ-C7403U Service Manual page 12

CQ-C7403U / CQ-C7303U / CQ-C7203U / CQ-C7103U
Pin Port Part Name & Description
No.
49 MOD2 Operating mode control 2
from Flash writer
50 H STANDBY Standby control from external
51 DCDC CONT Not connected
52 FP MOTOR1 Open/Close of Front panel 1
53 FP MOTOR2 Open/Close of Front panel 2
54 V CONT1 Reference voltage control for
motor driver
55 REMO 1 Remote control data
56 SA CLK Spectrum analyzer clock
57 EXT MUTE Pulled up to H
58 AMP CONT Power control for external
Amplifier
59 BZ OUT Buzzer signal
60 OEL VCONT Not connected
61 WOW Not connected
MODE1
62 WOW Not connected
MODE2
63 WOW Not connected
MODE3
64 DIM1 Dimmer control 1
65 DIM2 Dimmer control 2
66 MAIN CNT2 Power control for Hub
67 SRC KEY SOURCE key detection
68 PANEL IN Panel attachment detection
69 NC Not connected
70 NC Not connected
71 NC Not connected
72 MAIN CONT Main power control
73 INV CONT Dimmer power control
74 AF MUTE Audio mute
75 RESET Reset
76 FOCUS ELV Not connected
77 X1A Oscillator clock
78 X0A Oscillator clock
79 Vss GND
80 X1 Crystal oscillator clock
81 X2 Crystal oscillator clock
82 Vdd +5V power supply
83 P00 Pulled down to L
84 P01 Pulled up to H
85 OFFSET Audio clipping level detection
DET from Power amp.
86 STBY Standby for Power amp.
87 MUTE Mute for Power amp.
88 ILL SENS Pulled up to H
89 NC Not connected
90 NC Not connected
91 NC Not connected
92 NC Not connected
93 SUB RESET Reset for display CPU
94 DISPM 5V power control for Display
CONT
95 NC Not connected
96 NC Not connected
97 NC Not connected
98 S LED Security LED drive
99 ANT CONT Power control for antenna
motor
100 NC Not connected
10.3. Display Block
I/O FM AM CD
I 0 0 0
I 5 5 5
Pin
- - - - No.
O 4.9 5 4.9 1 A18
O 4.9 5 4.9 2 A19
O 0 0 5 3 A20
4 A21
I 5 5 5
5 A22
O 5 5 4.9
6 A23
I 5.3 5.2 5.2
7 A0
O 4.9 5 4.9
8 A1
9 VSS
O 0 0 0
10 A2
- - - -
11 A3
- - - -
12 A4
13 A5
- - - -
14 A6
15 A7
- - - -
16 A8
17 A9
O 0 0 0
18 A10
O 0 0 0
19 A11
O 5 5 5
20 A12
I 5 4.9 5
21 VCC
I - - -
22 A13
- - - -
23 A14
- - - -
24 A15
- - - -
25 SIN0
O 4.9 4.9 4.9
O 5 5 5
26 SOT0
O 5 5 5
27 SCK0
I 5 5 5
28 NC
- - - -
29 FRASH
O 2.1 2.1 2.1
RESET
I 1.6 1.6 1.6
30 KS1
- 0 0 0
31 NC
I 2 2 2
32 NC
O 2.5 2.5 2.5
33 AVCC
- 5 5 5
34 AVRH
- 0 0 0
35 AVSS/
- 5.1 5 5.1
AVRL
I 0 0 0
36 TH
DETEC
O 5 5 5
T
O 0 0 0
37 KS2
- 5 5 5
38 KS3
- - - -
39 NC
- - - -
40 VSS
- - - -
41 KI5
- - - -
42 KI4
O 4.9 5 4.9
43 KI3
O 0 0 0
44 KI2
45 NC
- - - -
46 NC
- - - -
47 MD0
- - - -
O 0 0 5
48 MD1
O 5.2 5.2 5.2
49 MD2
- - - -
50 NC
51 ROTA
RY 1
52 ROTA
RY 2
53 NC
54 NC
12
IC900 C2CBJH000133 [CQ-C7403U/C7303U]
IC900 C2CBJH000134 [CQ-C7203U/C7103U]
Port Part Name & Description
A18 in Address bus
A19 in Address bus
A20 in Address bus
Not connected
Not connected
Not connected
A0 in address bus for LCD
A1 in Address bus
GND
A2 in Address bus
A3 in Address bus
A4 in Address bus
A5 in Address bus
A6 in Address bus
A7 in Address bus
A8 in Address bus
A9 in Address bus
A10 in Address bus
A11 in Address bus
A12 in Address bus
+3.3V Power supply
A13 in Address bus
A14 in Address bus
A15 in Address bus
Serial data from Main CPU or Flash
writer
Serial data to Main CPU or Flash writer
Serial clock for Flash writer
Not connected
Reset for Flash memory
Key scan 1
Not connected
Not connected
+3.3V Power supply
+3.3V Power supply
GND
Pulled up to H
Key scan 2
Key scan 3
Not connected
GND
Key-in return 5
Key-in return 4
Key-in return 3
Key-in return 2
Pulled down to L
Pulled up to H
Operating mode control 0 from Flash
writer
Operating mode control 1: pulled up to
H
Operating mode control 2 from Flash
writer
Not connected
Volume-up detection
encoder
Volume-down detection from Rotary
encoder
Not connected
Not connected
I/O (V)
O 1.5
O 1.7
O 1.3
- -
- -
- -
O 1.3
O 0.3
- -
O 0.4
O 0.4
O 0.4
O 1.3
O 0.4
O 0
O 1.3
O 0
O 0
O 1.5
O 1.7
- 3.5
O 1.4
O 1.5
O 1.7
Çh 0.5
O 1.8
I 3.5
- -
O 3.5
O 0
- -
- -
- 3.5
- 3.5
- -
- 1.3
O 0
O 0
- -
- -
I 0
I 0
I 0
I 0
- 0
- 3.5
I 3.5
- 3.5
I 0
- -
from Rotary I 2.5
I 2.5
- -
- -