Rtc Trouble - LG KP105 Service Manual

4. TROUBLE SHOOTING

4.7 RTC Trouble

TEST POINT
CIRCUIT DIAGRAM
A4
CC00IO TP101
A3
RSTOUT_N FM_RST
P5
RESET_N _RESET
M7 R124
SAFE_RES
N7
SWITCH_ON PWRON
P6
OSC32K
R5
F32K
B4
CLKOUT
TP102
B7
T_OUT8 BS
A5
T_OUT4 FM_32K (FOR FM RADIO)
A6
T_OUT3
B6
T_OUT2 VLOGIC
A7
T_OUT0 TXON_PA
LGE Internal Use Only
X102
C132
C131
(FOR FM RADIO)
X102
MC-146_12_5PF
0
(0603)
1 2
4
3
C131 C132
32.768KHz
18p
18p
TP1
C116
2V0_VRTC
C119
R106
22K
220n
(1%)
Copyright © 2008 LG Electronics. Inc. All right reserved.
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TP1
R105 0
C117
C116
22u
1u
Only for training and service purposes