LG LPC-LM440A/X - Page 22

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• TUNER PACK TROUBLESHOOTING
Check the Tuner Power of
PN403 Pin 2 “Tu-B+”
Check the DC output of
“HIGH ”Q231 “C ”
Check the “high ”
Q232 “B ”
Check the DC output
Q233 “E ”,pattern
CE :Chip Emable
DI :Data Input(From u-com)
DO :Data Output(to u-com)
CLK :Tuner Mode Clock
Replace Tuner pack or
Micom 35,36,37,38 Check
Is the normal?
END
NO
NO
NO
YES
YES
YES