LG VX8560 - Page 52

LG Electronics Inc.
VX8560
Checking Flow
Checking Flow
Waveform
Waveform
Figure 4.1.1 (a)
Figure 4.1.1 (b)
Check X101 pin3
Is it 19.2MHz? (Refer to
figure 4.1.1 (a))
NO
Start
Replace Main B /D
VCTCXO circuit is Ok . See next page
to check control signal .
The Problem may be Logic part
Referto Logic troubleshoot
YES
NO
NO
Check X101 pin4
Is it 2.8V? (Refer to
figure 4.1.1 (b))
Replace X101 and then check C115 , R105 .
YES
Is it similar?
VCTCXO circuit is Ok . See next page
to check control signal .
YES
\YVYZ\
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