Samsung STH-N271 Service Manual page 14

STH-N271
Trouble Shooting
2-3.Transmitter Section (Offline test)
TDMA
1
START
Y
Send command TX path ON
Send Command channel selection
(Test mode:136, 131)
Y
U101_40 BBCLK=
6.2208MHz or 4.096MHz
or5.12MHz
Y
U101_34 TX_CLK=
BBCLK/32 or BBCLK/8
Y
U101_33 TX_SYNC=
BBCLK/512 or BBCLK/128
Y
U101_33 TX_DATA=
serial data
Y
MODE
SAMSUNG Proprietary-Contents may change without notice
AMPS
2
2-10
setup 8920B as basestaion for
TX test audio signal?
RF_BAND=L, TX_BAT=H
PLL_ON=H, VCYCXO_PC=H
IF_ON=H, PON_TX=H
PON_VRF3=H
N
Replace U203
N
Replace U203
N
Replace U203
N
Replace U203