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Reset or Power Check.
Check it after connecting the power cable
only on interface cable for NO Reset or
Power ON.
Are the pin 41
and 44 of CN100 +12V and +5V
respectively after the power
cable connecting?
YES
Does the
pin #3(Reset) of IC904 change 0V
to 5V at the power supply initial
input mode?
YES
Are the X101 oscillating?
YES
<Power>
•
Is the pin 3 of IC902 3.3V?
•
Is the pin 3 of IC901 2.5V?
YES
<Reference>
•
1.4V(V14): check pin 1 of IC202.
•
1.4V(V14REF): check pin 89 of IC200.
•
2.0V(V20REF): check pin 88 of IC200.
•
2.0V(VHAVC): check pin 91 of IC200.
•
2.5V(VFVREF): check pin 92 of IC200.
•
2.8V(V28REF): check pin 90 of IC200.
YES
OK
TROUBLESHOOTING GUIDE
NO
NO
NO
NO
•
Check the power(12V, 5V) short.
•
Check the PC power cable.
•
Repair the PC power supply.
•
Check the IC902(3.3V regulator
IC).
•
Check the IC100, IC200.
•
Check the X101(33.86MHz).
•
Check the IC100.
•
Check the IC902.
•
Check the IC901.
NO
•
Check the IC200.
•
Check the IC202.
55
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