Lenovo A536 Servicehandleiding - Pagina 19

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3.6.2 LCD has no display

LCD has no

backlight

Check whether the connection

status

between

module FPC connector and the

motherboard

normal, and reconnect the

connector whether the phone is

working normal.

Replace the LCD module,

and make sure whether the

LCD has the backlight.

Check whether the LCD

backlight

voltage is exceeding 20V.

Checks the SMT quality of

LCD backlight driver IC.

Whether these parts are

SMT good?

the

LCD

connector

driver

output

The backlight circuit

is normal, and the

LCD module is bad.