User Guide

SAMSUNG Proprietary-Contents may change without notice

SGH-A500 Flow Chart of Troubleshooting and Circuit Diagrams

6-5

7. Backlihgt PART

LCD Main Board

1. VBAT 2. VBAT 3. LED_IN 9. VBAT 10. VBAT 11. LED_IN

Check the soldered status of the

LED PAD

Back Light (Menu4.4.1)"Short or

Long" mode in the menu?

Backlight turn on.

Check the pin 11 of 16 (CN302 )

High(2.6V) == ?

Backlight turn on.

Check the pin 3 of 16 (LCD CON)

High(2.6V) == ?

Check the soldered status of the LED PAD

Solder the LED again or Replace the LED

Select backlight "Short or Long" mode

Check the LCD Connector

Replace the FPCB

Change LCD Module

Back Light dose not work

Yes