Rtc Trouble - LG 410G Service Manual

4.7 RTC Trouble

TEST POINT
Check Points
-Crystal soldering.
WAVE FROM
CIRCUIT
R16
OSC32KIN
T16
OSC32KOUT
P16
CLK32KOUT
C16
LED_A
E17
LED_B
F17
LED_C
U12
VIBDR
H12
CKEN
G12
REGEN
F16
HSDET
M8
BM_SEL
B16
BM PRECH
CHECKING FLOW
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Only for training and service purposes
TP1
CLK32K
MLED1
MLED2
MOTOR_P
CKEN
JACK_DETECT
START
Is the frequency
about 32Khz
YES
Replace X100 and try again.
YES
RTC will work properly
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4. TROUBLE SHOOTING
X100
TP1
C104
X100
15p
MC-146_7pF
4
R103
1
220K
32.768KHz
C105 C106
10p 15p
V_RTC
C104
3
2
LGE Internal Use Only