LG -A230 Service Manual page 85

Waveform
HSYNC rising time = 5.02ns
PCLK rising time = 5.9ns
LGE Internal Use Only
Waveform
MCLK
26MHz
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4. TROUBLE SHOOTING
HSYNC falling time = 4.07ns
PCLK falling time = 4.1ns
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Only for training and service purposes
PCLK
13MHz