Antenna Switch Module - Pantech G800 Service Manual

G800 Service Manual

6.6.5 Antenna Switch Module

Step Test point
Z701
5-1
Pin#10
Z701
5-2
Pin#4
Z701
5-3
Pin#2
Z701
5-4
Pin#4 & Pin#2
Z701
5-5
Pin#10 & Pin#4 & Pin#2
Check
The Control Voltages
PANTECH
Typical
Condition
Value
2.8V 2
2.8V 3
2.8V 7
2.8V 4
0V 5, 6
Fig. 6-10 Antenna Switch Module Circuit
- 49 -
Check point
When Pin#10 is Logic High and Pin#4
and Pin#2 is Logic Low the mode is
EGSM Tx.
While Pin#4 is Logic High and Pin#10
and Pin#2 is Logic Low the operating
mode is DCS Tx..
While Pin#2 is Logic High and Pin#10
and Pin#4 is Logic Low the operating
mode is DCS Rx..
While Pin#4 and Pin#2 is Logic High
and Pin#10 is Logic Low the operating
mode is DCS Tx..
While Pin#10, Pin#4 and Pin#2 is
Logic Low the operating mode is
EGSM Rx or DCS Rx.
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