cromax X458 L3, Service Manual

Page: 21 / 48

X458 L3 Service Manual
21
Cannot Power on-large current
YES
Check if the phone leakage
(current 0mA is normal)
Check and replace , CPU
END
Check and
replace RF
PA, Audio
PA,
Check if the capacitance,
varistor, LDO tube leakage
Use the
touch
method to
check and
replace the
heat spare
parts
Make the phone connect the power
supply and then press power key find
large current make the phone heat
YES
YES
NO
YES
YES
NO
NO
YES