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Copyright © 2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
4. TROUBLE SHOOTING
ʹΠΡΪΣΚΘΙΥ͑ι ͣͨ͑͡͡ͽ͑ͶΝΖΔΥΣΠΟΚΔΤ͑͟ͺΟΔ͑͑͟ͲΝΝ͑ΣΚΘΙΥ͑ΣΖΤΖΣΧΖΕ͑͟
ΟΝΪ͑ΗΠΣ͑ΥΣΒΚΟΚΟΘ͑ΒΟΕ͑ΤΖΣΧΚΔΖ͑ΡΦΣΡΠΤΖΤ
ͽͶ͑ͺΟΥΖΣΟΒΝ͑ΆΤΖ͑ΟΝΪ
][VX[W
(1) Checking Crystal Circuit
4. TROUBLE SHOOTING
1 pin
Figure 4.3.1
26 MHz O.K?
No
Crystal is OK.
See next page to check PLL Circuit
Yes
Replace TP1
TP1(X102)
1 pin : 26MHz
TEST POINT
CIRCUIT
WAVEFORM
CHECKING FLOW
4.7u
C103
X102
TSX-3225 26MHZ_7_4PF
26MHz
2
1
3
4
T4
V4
L33
K34
Y6
H6
M32
FREF
AU_VCM
PWM
XTAL1
XTAL2_GND
AVDD_RTC
CHG_EN
BT_CLK26M
TP1
1
Содержание LG-A155
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