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7321 N/B Maintenance
7321 N/B Maintenance
Where
From Power Source
Problem
Check following parts and signals:
PL502 PF501
PD501 PC6
PR2 PU18
PU1 PQ7
PD2 U19
D11 Q[21-23]
PQ4 PU2
PR[7-10] Q29
Board-level
Troubleshooting
Replace
Replace
Motherboard
Motherboard
No power
No power
Connect
AC adaptor
or battery
Replace the
faulty AC
adaptor or
Battery.
Power
Power
OK?
OK?
No
No
Yes
Yes
No
No
Try another known good battery or AC adapter.
Yes
Yes
AC
BATTERY
Is the
Notebook connected
to power (Either AC adaptor
or battery)?
8.1 No Power
When the power button is pressed, nothing happens ,power indicator does not light up.
Check following parts and signals:
PARTS: SIGNAL
:
ADINP
VMAIN
VDD5
PWRBTN#
PWRON
BATT_DEAD
I_LIMIT
J514 RP510
PU6 D13
PQ11,12 Q28
Q506 D501
PQ8 D507
VMAIN
BATT_V
PWRON
BATT_T
PARTS:
SIGNAL
:
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