Rtc Trouble - LG CE500 Service Manual

4. TROUBLE SHOOTING

4.13 RTC Trouble

Test Point
R124
R123
X100
Check soldering of R123
,R124 ,X101 OK?
Voltage of R124
Replace X101 and try again.
BACKLIGHT WILL
WORK PROPERLY.
START
No
Yes
No
= 1.8V?
Yes
- 62 -
Circuit Diagram
32.768KHz_Crystal
X101 32.768KHz
3
R150 NA 4
R151 NA 2 1
MC-146_12.5pF
C155
Resolder R123, R124, X101
Change main board (DBB-U103 problem)
R123 0
OSCOUT
R124
10M OSCIN
C156
27p 27p