LG KG280 Service Manual - Page 76
RTC Trouble
 |
View all LG KG280 manuals
Add to My Manuals
Save this manual to your list of manuals |
Page 76 highlights
4.15 RTC Trouble TEST POINT 4. TROUBLE SHOOTING R107 X100 Figure 24 CIRCUIT X100 3 2 4 R107 1 10M 32.768KHz MC-146_7pF EXXY0004601 C120 C119 NA NA 26M_DBB KEY_ROW0 KEY_ROW1 KEY_ROW2 KEY_ROW3 KEY_ROW4 C118 1000p C141 NA R106 100ohm C142 NA T5 U4 KEYPADROW0 R8 KEYPADROW1 KEYPADROW2 R6 R7 KEYPADROW3 KEYPADROW4 T10 OSCIN U10 B1 OSCOUT CLKIN C2 NC1 D8 E1 NC2 NC3 F1 F3 NC4 NC5 G1 NC6 Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - 77 - LGE Internal Use Only
-
1 -
2
-
3
-
4
-
5
-
6
-
7
-
8
-
9
-
10
-
11
-
12
-
13
-
14
-
15
-
16
-
17
-
18
-
19
-
20
-
21
-
22
-
23
-
24
-
25
-
26
-
27
-
28
-
29
-
30
-
31
-
32
-
33
-
34
-
35
-
36
-
37
-
38
-
39
-
40
-
41
-
42
-
43
-
44
-
45
-
46
-
47
-
48
-
49
-
50
-
51
-
52
-
53
-
54
-
55
-
56
-
57
-
58
-
59
-
60
-
61
-
62
-
63
-
64
-
65
-
66
-
67
-
68
-
69
-
70
-
71 -
72 -
73 -
74 -
75 -
76 -
77 -
78 -
79 -
80 -
81 -
82
-
83
-
84
-
85
-
86
-
87
-
88
-
89
-
90
-
91
-
92
-
93
-
94
-
95
-
96
-
97
-
98
-
99
-
100
-
101
-
102
-
103
-
104
-
105
-
106
-
107
-
108
-
109
-
110
-
111
-
112
-
113
-
114
-
115
-
116
-
117
-
118
-
119
-
120
-
121
-
122
-
123
-
124
-
125
-
126
-
127
-
128
-
129
-
130
-
131
-
132
-
133
-
134
-
135
-
136
-
137
-
138
 |
 |
LGE Internal Use Only
Copyright © 2007 LG Electronics. Inc.
All right reserved.
Only for training and service purposes
4. TROUBLE SHOOTING
- 77 -
4.15 RTC Trouble
TEST POINT
CIRCUIT
X100
R107
10M
R107
C142
NA
NA
C119
R106
100ohm
C118
1000p
OSCIN
T10
U10
OSCOUT
NC2
D8
E1
NC3
NC4
F1
F3
NC5
G1
NC6
U4
R8
KEYPADROW2
R6
KEYPADROW3
R7
KEYPADROW4
C2
NC1
T5
KEYPADROW0
KEYPADROW1
CLKIN
B1
1
2
3
4
X100
EXXY0004601
MC-146_7pF
32.768KHz
C141
NA
NA
C120
26M_DBB
KEY_ROW0
KEY_ROW1
KEY_ROW2
KEY_ROW3
KEY_ROW4
Figure 24