cromax X458, Service Manual, Page: 37 / 48

X458 L3 Service Manual
37
ATV can’t work well
NO
ATV can’t work well
Upgrade SW to check if
problem can be fixed?
SW upgrade
Check if there is 1.2v start
voltage on R810
、
R811
Check if R810
、
R811
0ohm was good.
Check if there is 2.8v Voltage
input on C807
、
C808?
Replace power manage
IC
Check if there is 26Mhz clock
signal output on CPU by Pin
AA5
。
Re-solder or Replace U801
ATV chip
Re-solder or Replace CPU
END
YES
YES
NO
YES
NO
YES
YES
YES
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