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Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
4. TROUBLE SHOOTING
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4.15 RTC Trouble
TEST POINT
CIRCUIT
X100
R101
3p
C123
1
2
3
4
32.768KHz
X100
MC-146_12_5PF
C121
1000p
R101
10M
3p
C120
OSCIN
T10
U10
OSCOUT
E1
NC3
NC4
F1
F3
NC5
NC6
G1
NC2
D8
T5
KEYPADROW0
U4
KEYPADROW1
R8
KEYPADROW2
R6
KEYPADROW3
R7
KEYPADROW4
C2
NC1
CLKIN
B1
26M
KEY_ROW0
KEY_ROW1
KEY_ROW2
KEY_ROW3
KEY_ROW4
Figure 4.15