8889 8889 N/B MaintenanN/B Maintenanccee
8.1 No Power (3)
When power button is pressed ,nothing happens ,power indicator does not light up.
No Power
Check the following parts for cold solder or one of the following
parts on the Mother Board may be defective, use an oscilloscope
to check the following signal or replace the parts one at a time and
test after each replacement.
Battery
Is the
NoConnect Parts Signal
Notebook connected
AC adaptorPJ502 PR16PU7PD4BATTADINP
to power (Either AC adaptor
or batteryPF1PD505 PU502 PR14BATT_TADINP_1
or battery)?
PL1PD506 PR501 PR19BATT_VADINP_2
PL2PU6PR503D/VMAINADEN#
YesPR512 PR513 PR504
Where
From Power Source
Try another known good battery
Problem(First use
or AC adapter.AC to power it)
Check the following parts for cold solder or one of the following
Replace the faulty
PowerYesparts on the Mother Board may be defective, use an oscilloscope
AC adaptor or to check the following signal or replace the parts one at a time and
OK?
Battery.test after each replacement.
AC Adaptor
No
Parts Signal
PJ501PD502PQ502PR25D/VMAIN+5VA
PF501PD503PQ6PR26PWR_VDDIN+3VA
PL501PD504PQ7PR27LEARNING
ReplaceBoard-level
PL502PR502PQ8
MotherboardTroubleshooting
PD501PQ501PQ9
101 |
ACEC
