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ViewSonic Corporation
E771-4
6-3
Function Key Abnormal
Function Key Abnormal
Check 1701 and
1703 missing?
Puton
Ye.
по
Power
ON/OFF again and
check X701, oscillator
OK?
No
Replace X701
Yes
Check
1703 EEPROM content
OK?
No
Replace 1703 or do
ATE again
Yes
Replace 1701 and check
uP ОК?
Yes
Replace 1701
No
Check
pin 5 of I701
is 5V?
Yes
Check
R735, C710
No
Replace 1804
Confidential - Do Not Copy
Page 23
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