Panasonic CR-W405U, Service Manual

Page: 5 / 32

5
4
Technical Descriptions
4.1.
Terminals Description
4.1.1.
Main Block
IC601:LC723781XX02
Note 1 :
Voltage measuerments are with respect to ground,
with a voltmeter (internal resistance : 10M
Ω
).
4.1.2.
Display Block
IC901:C0HBA0000225
PIN
No. Port Description I/O FM
(V)
AM
(V)
WB
(V)
1 XIN Main system clock signal
input. I 2.53 2.53 2.54
2 TEST2 Test terminal 2. I 0 0 0
3 VREG Regulator output bypass
condensor connected. O 3 3 3
4 VSSCPU GND -- 0 0 0
5 N.C. Not connection. O 0 0 0
6 N.C. Not connection. O 0 0 0
7 N.C. Not connection. O 0 0 0
8 N.C. Not connection. O 0 0 0
9 LCD_DO LCD data signal output. I 5.17 5.17 5.17
10 LCD_DI LCD data signal input. O 0 0 0
11 LCD_CLK LCD clock signal output. O 5.13 5.16 5.16
12 LCD_CE LCD chip enable signal out-
put. O 0 0 0
13 N.C. Not connection. O 0 0 0
14 N.C. Not connection. O 0 0 0
15 PDM_SCK Radio preset direct memory
EEPROM I2C clock signal
output. O 5.16 5.17 5.15
16 PDM_SDA Radio preset direct memory
EEPROM I2C data signal
input. I/O 5.15 5.16 5.17
17 N.C. Not connection. O 0 0 0
18 N.C. Not connection. O 0 0 0
19 N.C. Not connection. O 0 0 0
20 N.C. Not connection. O 0 0 0
21 N.C. Not connection. O 0 0 0
22 N.C. Not connection. O 0 0 0
23 N.C. Not connection. O 0 0 0
24 N.C. Not connection. O 0 0 0
25 N.C. Not connection. O 0 0 0
26 N.C. Not connection. O 0 0 0
27 N.C. Not connection. O 0 0 0
28 N.C. Not connection. O 0 0 0
29 N.C. Not connection. I 0 0 0
30 N.C. Not connection. I 0 0 0
31 N.C. Not connection. I 0 0 0
32 N.C. Not connection. I 0 0 0
33 N.C. Not connection. O 0 0 0
34 N.C. Not connection. O 0 0 0
35 N.C. Not connection. O 0 0 0
36 N.C. Not connection. O 0 0 0
37 N.C. Not connection. O 0 0 0
38 N.C. Not connection. O 0 0 0
39 VDDPORT VDD +5V
-
5.16 5.16 5.16
40 VSSPORT GND
-
0 0 0
41 N.C. Not connection. O 0 0 0
42 N.C. Not connection. O 0 0 0
43 N.C. Not connection. O 0 0 0
44 N.C. Not connection. O 0 0 0
45 N.C. Not connection. O 0 0 0
46 N.C. Not connection. O 0 0 0
47 N.C. Not connection. O 0 0 0
48 N.C. Not connection. O 0 0 0
49 PWR_CNT Power-on control signal
output. O 5.15 5.15 5.15
50 AMP_STB Amp stby control signal out-
put. O 5.15 5.15 5.15
51 AMP_MUT
E Amp mute control signal. O 0 0 0
52 N.C. Not connection. O 0 0 0
53 SSC Tuner search sensitivity
change. O 5.15 5.15 5.15
54 AF_MUTE AF mute control signal out-
put(Pre-out). O 0 0 0
55 E-
VOL_I2C_S
DA Electronic Vol-IC data con-
trol signal. I/O 5.16 5.16 5.15
56 E-
VOL_I2C_S
CK Electronic Vol-IC clock con-
trol signal. O 5.16 5.16 5.15
57 ILL_CNT ILLM PWM control signal
input. I 0.3 0.3 0.3
58 POWER_L
ED Power LED signal control. O 0.17 0.15 0.15
59 ILL_PWM ILLM PWM control signal
output. O 0.3 0.3 0.3
60 N.C. Not connection. O 0 0 0
61 ILL_P_SEN
S Backlight ILLM on/off con-
trol signal detection input. I 5.21 5.21 5.21
62 N.C. Not connection. O 0 0 0
63 N.C. Not connection. O 0 0 0
64 N.C. Not connection. O 0 0 0
65 N.C. Not connection. O 0 0 0
66 N.C. Not connection. O 0 0 0
67 BATT Battery power connected
signal detection. I 5.17 5.17 5.17
68 MODE_B Rotary clock signal B out-
put. I 5.13 5.13 5.13
69 N.C. Not connection. O 0 0 0
70 N.C. Not connection. O 0 0 0
71 MODE_A Rotary clock signal A out-
put I 5.13 5.13 5.13
72 N.C. Not connection. O 0 0 0
73 WB_MODE Wbpower control signal
output.
O 8 8 0
74 N.C. Not connection. O 0 0 0
75 RADIO_MO
DE Radio power control signal
output. O 0 0 8.35
76 FM/AM SW FM/AM control signal out-
put.
O 0 8 0
77 N.C. Not connection. I 0 0 0
78 ST_SW Steering sw A/D control sig-
nal input. I 0 0 0
79 BATT_LEV
EL Battery voltage level detec-
tion signal input. I 4.04 4.04 4.04
80 N.C. Not connection. I 0 0 0
81 VSSADC GND -- 0 0 0
82 N.C. Not connection. I 0 0 0
83 ST FM stereo signal input I 5.23 5.23 1.48
84 VSM FM/AM SD signal input. I 0 0.5 0
85 N.C. Not connection. I 0 0 0
86 RESET Reset signal input I 5.17 5.17 5.17
87 ACC ACC power connected sig-
nal detection I 5.3 5.3 5.3
88 N.C. Not connection. I 0 0 0
89 N.C. Not connection. I 0 0 0
90 FM/AM_IFC FM/AM IFC signal input I 0 0 0
91 N.C. Not connection. I 0 0 0
92 SUBPD None O 1.5 1.47 0
93 VDDPLL Power supply of PLL
-
5.17 5.17 5.17
94 WB OSC WB local oscillator signal
input. I 0 0 1.49
95 OSC_FM/
AM FM/AM OSC signal input I 1.49 1.49 0
96 VSSPLL GND
-
0 0 0
97 N.C. Not connection. O 0 0 0
98 EO1 PLL phase comparison
error output O 1.47 1.45 1.38
99 TEST1 Test terminal 1.
-
0 0 0
100 XOUT Main system clock crystal
connection. O 2.62 2.62 2.62
PIN
No. Port Description I/O FM
(V)
AM
(V)
WB
(V)
crw405u.book Page 5 Thursday, January 14, 2010 2:17 PM