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Troubleshooting
CPQ-C1786FNSL/T (FS7550/V7550)
6-3 Function Key Abnormal
Put on
I701, I703
Replace X701
No
Check I701 and
I703 missing?
Power
ON/OFF again and
check X701, oscillator
OK?
Function Key Abnormal
Yes
No
No
Replace I703 or do
ATE again
Yes
Replace I701 and check
uP OK?
Yes
Check
I703 EEPROM content
OK?
No
Replace I705, Q701,
Q702, R728
Check
pin 8 of I701
is 5V?
Replace I701
Yes
Check
ZD701, R735
Yes
No