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Flow Chart of Troubleshooting and Circuit Diagrams
3-22
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3-1-10. LCD Part
YES
YES
Check VR203
YES
Check HEA202
(LCD Connector)
LCD does not work
NO
Connect HEA202
Check HEA202
(Backlight enabld)
Pin#24
≒
2.6V
Check R228, U100
(Backlight enable path
Check
C47
of LCD circuit
≒
11V
NO
YES
YES
LDI is dead.
Change LCD main FPCB
LCD Backlight on?
NO
NO
Check HEA202
Pin #12
≒
3V,
Pin #14
≒
2.6V
NO
Check U500(PM6550)
Resolder J1(=
J3
) connecotor of LCD Circuit
END