LG LG-V909DW - Page 65

4. TROUBLE SHOOTING
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4.3.2 Checking TCXO Block
The output frequency (19.2MHz) of XO (X500) is used as the reference clock.
FIG 6 XO Block
Schematic of the Crystal Part (19.2MHz)
FIG 7 XO Schematic
IF the signals of TP1 and TP2 are 19.2MHz, then the XO is ok.
TP1
TP2
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ͽ͸Ͷ ͺΟΥΖΣΟΒΝ ΆΤΖ ΀ΟΝΪ
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4.3.2 Checking TCXO Block
The output frequency (19.2MHz) of XO (X500) is used as the reference clock.
FIG 6 XO Block
Schematic of the Crystal Part (19.2MHz)
FIG 7 XO Schematic
IF the signals of TP1 and TP2 are 19.2MHz, then the XO is ok.
TP1
TP2
19.2MHz
DSX321G-19.2M
X500
EXXY0025101
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DNIC522
DNIC523
TP1
TP2