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Level 3 Repair
8-6
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8-3-1. Power On
Power on does not work
check the current consumption is
less than 60mA
Change the PBA
YES
YES
NO
C400
≥
4.5V
Check the HDC400
YES
NO
C346(or C306) = 1.2V?
Re-solder or change the U300
NO
YES
C340=2.8V?
Re-solder or change the U307
NO
YES
Check the 38.4Mhz Clock
at C259.
Is it around 38.4Mhz?
Check the OSC100, U202
YES
NO
Check the C300 = 1.8V?
Change the PBA
YES
NO
C302(or C311) = 1.8V?
C301(or C310) = 1.2V?
Re-solder or change the U303
END
YES
NO
