Specifications

SAMSUNG Proprietary-Contents may change without notice

8-3

Trouble Shooting

8-1-3 Abnormal Backlight Operation

Press any button on the phone.

’H’ level outputted

from U908 pin 147?

’H’ level

from U908 pin 147 drive

Q4 through R35?

Normal Q5 operation?

The voltage applied

to LCD pins 46, 47?

Resolder R31 and R32.

Check R28, R29, R30 and

Q5. Replace if required.

Check R34, R35, and Q4.

Replace if required.

Check U908 pin 147. Replace if required.

Backlight LED on

YES