MiTAC 8050QMA Manuel de service télécharger pdf (Page 106)

105

50QMA

N/B Maintenance

When the power button is pressed, nothing happens, no fan activity is heard and power indicator is not light up.

Power

Battery

BATT

BAT_T

BAT_V

BAT_CLK

BAT_DATA

PU3

PL507

PF501

PQ506

PD505

PL508

PD507

PQ503

Where from

power source problem

(first use AC to

power it)?

Check following parts and signals:

Parts: Signals:

Board-level

Troubleshooting

Replace

Motherboard

No Power

Try another known good

battery or AC adapter.

Is the

notebook connected

to power (either AC adaptor

or battery)?

Connect AC adaptor

or battery.

Replace the faulty AC

adaptor or battery.

Power

OK?

Yes

8.1 No Power-1

Parts

PJ701

PL1

PF1

PQ501

PD502

U513

U515

Signals

ADINP

LEARNING

H8_I_LIMIT

SW_VDD3

Parts

Q37

Q50

U11

Signals

+PWR_VDDIN

+DVMAIN

ADINP

LEARNING

I_LIMIT

Main Board

MiTac Secret

Confidential Document

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MiTAC 8050QMA Manuel de service Page 106

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