LG KS660 - Page 91

- 92 -
LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
4. TROUBLE SHOOTING
Signals are
Normal ?
Replace
PMB6272(U601)
Yes
No
Transceiver is OK.
See next page to check
PAM Control Circuit.
Checking Flow
Figure 23. Transceiver Output (8PSK)
Figure 22. Transceiver Output (GMSK)
LBAND_PAM_IN (MODE: GMSK) : TP1 LBAND_PAM_IN (MODE: 8PSK) : TP1
EGSM 30CH EGSM 30CH
Check Output Signal
(TP1, TP2)