Samsung SGH-A500 Service Manual page 19

7. Backlihgt PART
Back Light dos e not work
Check the soldered status of the L ED PAD
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 (L CD CON)
High(2.6V) == ?
LCD
1. VBAT 2. VBAT 3. LED_IN
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SGH-A500 Flow Chart of Troubleshooting and Circuit Diagrams
Yes
No
Yes
No
Yes
No
Yes
No
SAMSUNG Proprietary-Contents may change without notice
Solder the LED again or Replace the LED
Select backlight "Short or Long"
Check the LCD Connector
Replace the FPCB
Change LCD Module
Main Board
9. VBAT 10. VBAT
6-5
mode
11. LED_IN