Compaq CPQ-C1786FNSL Service Manual page 24

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