Front End Module - Pantech GB210 Service Manual

GB210 Service Manual

6.6.5 Front End Module

Step Test point
U750
5-1 2.6V
Pin#11
U750
5-2 2.6V
Pin#9
U750
5-3 2.6V
Pin#12
Typical Value
Fig. 6-7 Antenna Switch Module Circuit
PANTECH
Condition
When Pin#11 is Logic High and Pin#2
2 is Logic Low the mode is GSM-850
band.
During Pin#9 and Pin#12 are Logic
3,6 High and Pin#11 is Logic Low the
operating mode is DCS band.
When PCS band is on operating, Both
3,6
Pin#9 and Pin#12 logics are high.
49
R&D CONFIDENTIAL
Check point