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4. TROUBLE SHOOTING
4.7 RTC Trouble
TEST POINT
Check Points
-Crystal soldering.
WAVE FROM
CIRCUIT
OSC32KIN
OSC32KOUT
CLK32KOUT
BM_PRECH
CHECKING FLOW
LGE Internal Use Only
R16
T16
P16
CLK32K
C16
LED_A
MLED1
E17
LED_B
F17
LED_C
MLED2
U12
VIBDR
MOTOR_P
H12
CKEN
CKEN
G12
REGEN
F16
HSDET
JACK_DETECT
M8
BM_SEL
B16
START
Is the frequency
about 3 2Khz
YES
Replace X100 and try again.
YES
RTC will work prop erly
X100
TP1
TP 1
C104
15p
MC-146_7pF
4
R103
1
220K
C105
C106
10p
15p
V_RTC
Copyright © 2008 LG Electronics. Inc. All right reserved.
- 58 -
C104
X100
3
2
32.768KHz
Only for training and service purposes
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