Transmitter Section - Samsung SCH-A310 Service Manual

8-3 Transmitter Section

Transmitter section.
Check RFT3100
NO NO NO NO
PCS:PCSA_OUT(0~600CH)
PCSB_OUT(601~1175CH)
AMPS:CELLA_OUT
RF OUT Level
PCS:PA(U313)
AMPS:PA(U317)
Ablormal
PCS:+9dBm PCS:+9dBm PCS:+9dBm PCS:+9dBm
OK?
AMPS:+8dBm AMPS:+8dBm
AMPS:+8dBm AMPS:+8dBm
YES YES
YES YES
Check
Output Level
OK?
PCS:+26dBm PCS:+26dBm
PCS:+26dBm PCS:+26dBm
AMPS:+28dBm AMPS:+28dBm AMPS:+28dBm AMPS:+28dBm
SAMSUNG Proprietary-Contents may change without notice
NO NO
NO NO
NO NO NO NO
Check PLL
OK?
8-9
Trouble Shooting
NO NO
NO NO
Check RFT3100
pin 19(C340)
YES YES YES YES
RF_LO Level
(AMPS:-10dBm,
PCS:-10dBm)