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6-3 Function Key Abnormal
Function Key Abnormal
Check I701 and
I703 missing?
N o
Power
O N / OFF again and
check X701, oscillator
O K ?
Yes
Check
I703 EEPROM content
O K ?
Yes
Replace I701 and check
uP OK?
N o
Check
pin 5 of I701
is 5V?
N o
Replace I705
Yes
I701, I703
Replace X701
N o
Replace I703 or do
N o
A T E again
Replace I701
Yes
Yes
R732, C713
Put on
Check
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