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4. TROUBLE SHOOTING
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LGE Internal Use Only
Copyright © 011 LG Electronics. Inc. All right reserved.
Only for training and service purposes
(1) Checking Crystal Circuit
TEST POINT
CHECKING FLOW
Figure 4.2.1
1 pin : 26MHz
U100
X100
26 MHz O.K?
No
Crystal is OK.
See next page to check PLL Circuit
Yes
Replace X100