Panasonic CQ-C1325N, Service Manual

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IC601 : LC7237849D41
Ref.
No.
Part No. Part Name &
Description I/
O
FM(V
)
AM(V
)
CD(V
)
1 XIN 4. 5 MHz X’tal and
Connection
I 2.52 2.54 2.53
2 TEST2 GND connection I 0 0 0
3 VREG Bypass condenser
connected.
O 2.94 2.95 2.95
4 VSSCPU GND connection - 0 0 0
5 CDC_DATA CD changer data I 0 0 0
6 N.C. None - - - -
7 CDC_CLK CD changer clock I 0 0 0
8 CDC_REM_OUT CD changer Remote out O 0 0 0
9 LCD_DO LCD data output I 5.2 5.21 5.21
10 LCD_DI LCD data input O 5.01 5.04 5.01
11 LCD_CLK LCD clock O 5.14 5.16 5.16
12 LCD_CE LCD chip enable output O 0.17 0.17 0.17
13 CD_DO CD data output I 5.36 5.38 3.9
14 CD_DI CD data input O 0 0 4.74
15 CD_CLK CD clock O 4.96 4.98 4.96
16 CD_CE CD chip enable O 0 0 1.57
17 CD_EM CD eject O 0 0 0
18 CD_LM CD loading O 0 0 0
19 CD_S/L CD 24PIN connection O 0 0 5.19
20 SUB_RDY CD INTB1 connection I 0.12 0.1 5.22
21 CD_INSW1 CD insert SW input I 0.1 0.1 0.1
22 CD_SW2 CD MECHA SW2 I 5.15 5.7 0.1
23 CD_LIMIT_SW CD limit SW I 0 0 5.17
24 CD_DRF CD Mute I 5.33 5.35 5.35
25 CD_RST CD reset O 0 0 5.13
26 CD_BATT CD_BATT O 0 0 5.18
27 N.C. None O 5.17 5.19 5.19
28 N.C. None O 0 0 0
29 PANEL Panel detect I 5.21 5.22 5.22
30 N.C. GND connection I 0 0 0
31 N.C. GND connection I 0 0 0
32 N.C. GND connection I 0 0 0
33 N.C. None - - - -
34 N.C. None - - - -
35 N.C. None - - - -
36 N.C. None - - - -
37 N.C. None - - - -
38 N.C. None - - - -
39 VDDPORT Power supply of PORT - 5.17 5.19 5.19
40 VSSPORT GND of PORT - 0 0 0
41 N.C. None - - - -
42 N.C. None - - - -
43 N.C. None - - - -
44 N.C. None - - - -
45 N.C. None - - - -
46 N.C. None - - - -
47 N.C. None - - - -
48 N.C. None - - - -
49 PWR_CNT Power control O 5.15 5.17 5.17
50 AMP_CNT Amp stand-by O 5.15 5.17 5.17
51 AMP_MUTE Amp mute O 5.17 5.19 5.19
52 N.C. None - - - -
53 SSC Tuner search
sensitivity change
O 0 0 0
54 AF_MUTE AF mute O 5.17 5.19 5.19
55 I2C_DATA Electronic VOL data O 5.17 5.19 5.19
56 I2C_CLK Electronic VOL clock O 5.17 5.19 5.19
57 ANT_CNT Motor antena control O 5.17 5.19 0
58 POWER_LED Power LED O 0.15 0.16 0.13
59 N.C. None - - - -
60 N.C. (
BZ_OUT ) None - - - -
61 N.C. None - - - -
62 N.C. None - - - -
63 N.C. None - - - -
Ref.
No.
Part No. Part Name &
Description I/
O
FM(V
)
AM(V
)
CD(V
)
64 N.C. None - - - -
65 N.C. None - - - -
66 TEL_MUTE External MUTE input I 0 0 0
67 BATT Battery detection I 5.19 5.2 5.2
68 MODE_B ROTARY B input I 5.1 5.17 5.17
69 RDS_CLK RDS clock I 0 0 0
70 REM_IN Remocon data input I 5.12 5.14 5.12
71 MODE_A ROTARY A input I 5.16 5.17 5.16
72 CDC_STB CD changer strobe
input
I 0 0 0
73 NC None - - - -
74 MONO Compulsion MONO ON O 0 0 0
75 AM_MODE AM change O 8.19 0.13 8.24
76 FM_MODE FM change O 0.13 8.18 8.24
77 N.C. GND connection I 0 0 0
78 INIT_C Initial value C I 0 0 0
79 INIT_B Initial value B I 5.15 5.17 5.17
80 INIT_A Initial value A I 1.93 1.94 1.94
81 VSSADC GND connection - 0 0 0
82 RDS_DATA RDS data I 0 0 0
83 ST FM stereo input I 5.37 5.38 5.39
84 SD_FM/AM Signal detection I 3.3 3.28 0
85 N.C. GND connection I 0 0 0
86 RESET Reset Input I 5.2(
PWR
OFF)
5.2(
PWR
OFF)
5.2(
EJEC
T)
87 ACC Power supply I 5.4 5.4 5.41
88 N.C. GND connection I 0 0 0
89 N.C. GND connection I 0 0 0
90 FM/AM_IFC FM/AM IF input I 1.46 1.47 0
91 N.C. GND connection I 0 0 0
92 SUBPD None O 0 0 0
93 VDDPLL Power supply of PLL - 5.18 5.19 5.2
94 N.C. None I 0 0 0
95 OSC_FM/AM FM/AM osc input I 1.46 1.39 0
96 VSSPLL None - 0 0 0
97 N.C. None - - - -
98 EO1 PLL phase comparison
error output
O 1.93 2.02 0
99 TEST1 GND connection I 0 0 0
100 XOUT 4. 5 MHz X’tal and
Connection
O 2.62 2.63 2.63
Note 1 :
Voltage measuerments are with respect to ground, with a
voltmeter (internal resistance : 10M ohms).
IC501:YEAMLC78691N
Ref.
No.
Part No. Part Name & Description I/O (V)
1 EFMIN RF signal input port. I 1.58
2 RFOUT RF signal output port. O 1.67
3 LPF LPF capacitor connection port
for RF signal DC level
detection. O 1.64
4 PHLPF LPF capacitor connection port
for detection. O 1.68
5 AIN A signal input port. I 1.66
6 CIN C signal input port. I 1.66
7 BIN B signal input port. I 1.66
8 DIN D signal input port. I 1.66
9 FEC LPF capacitor connection port
for FE signal. O 1.6
10 RFMON LSI build-in analog signal
monitor port. O 1.64
11 VREF VREF voltage output port. O 1.66
12 JITTC Capacitor connection port for
JIT detection. O 0
10 TERMINALS DESCRIPTION
10.1. Main Block
6
CQ-C1405N