LG PRADA KE850 - Page 108

5. Trouble shooting
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Checking Flow
LBAND_PAM_IN (MODE: GMSK) LBAND_PAM_IN (MODE: 8PSK)
Signals are
Normal
?
Replace
PMB6272(U404)
Yes
No
Transceiver is OK.
See next page to check
PAM Control Circuit.
Check Output
Signal
Figure 24. Transceiver Output (GMSK) Figure 25. Transceiver Output (8PSK)