LGE Internal Use Only
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 101 -
START
Connect the phone to network
Equipment and setup call.
Setup 1KHz tone out.
Does the sine wave appear
at R618, R621 ?
Change the main board
Does the sine wave appear
at Number 2, 4 pin
in the main Bíd CN503?
Change U601
Does the sine wave appear
at EAR(+) PAD in LCD FPCB?
Change the LCD FPCB
Is the soldering of the
receiver OK?
Resolder the Receiver
Can you hear sine wave
out of the receiver ?
Change the Receiver
END
YES
YES
YES
YES
YES
NO
NO
NO
NO
NO
1
2
3
3
The sine wave not appear
Z3X-BOX.COM
Содержание KT520
Страница 231: ...Note Z 3 X B O X C O M ...
Страница 232: ...Note Z 3 X B O X C O M ...