Acer AL2017 Manuel d'entretien - Page 23

Parcourez en ligne ou téléchargez le pdf Manuel d'entretien pour {nom_de_la_catégorie} Acer AL2017. Acer AL2017 40 pages. Lcd display
Également pour Acer AL2017 : Manuel de l'utilisateur (11 pages), Spécifications (2 pages), Manuel d'entretien (37 pages), Manuel de démarrage rapide (2 pages)

Imprimer la page

1. Black Screen

Acer

2. No raster

No backlight

Yes

LED lamp is OK

Yes

Is there 16V voltage on

pin3,4 of T501,T502

Yes

Is there PWM signal on

pin4 of IC501

Yes

Is there High level voltage

on pin10 of IC501

Yes

Vsense voltage is 2.9V

Are there PWM signal on pin1,

pin15 of IC501

Yes

Pin 5 of IC501 voltage is

Low level

Pin 3 of IC501 voltage is high

level voltage

END

No power supply to

inverter

U501, U502 fail

Check I/F BD

Lamp connector

Yes

opened

IC501 failure

Feedback circuit

Yes

failure

Yes

IC501 protected

Yes

Check the cable that from

Yes

I/F BD to P/I BD is ok

Check power

supply

Yes

Replace U501,U502

Check C524,R528, R533,

Yes

D507

Check D505, D511,

Yes

D512, D513, R520, C520

Service Manual