MiTAC 7521 PLUS/N 7521Plus / N N/B MAINTENANCE, No Power, Symptom, Next Page, No power

7521Plus / N N/B MAINTENANCE

8.1 NO POWER:

Symptom:

When the power button is pressed, nothing happens, no fan activity is heard and power indicatordicator isis notnot lightlight upup..

No power

Is the

notebookNo power source O.K?

(Either AC adapter

or battery)

Yes

Connect AC adapter or battery

Board level

troubleshooting

for no power

WHERE	BATTERY PACK
FROM POWER SOURCE
PROBLEM
?

1.Check the power source from battery circuit.

Try another known good battery, charger board or AC adapter.

AC-ADAPTOR

From mother board J514

Yes

Power

O.K ?

No

Replace motherboard or go into board level troubleshooting

Replace the faulty battery, charger board or AC adapter.

Next Page

check the following signal & parts.

SIGNAL: PARTS:

BATT PU9

BAT_V PR20 PR21

PQ12

J514 CHARGE B’D

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