Power Amplifier Module - Pantech PG-3210 Service Manual

PG-3210 Service Manual

6.5.3 Power Amplifier Module

Test
Step
point
U702
3-1 Logic High
Pin#2
Logic High
U702
3-2
Pin#4
Logic Low
Fig.6-4 U702 PAM's PCB Layout
Typical Value Condition
2, 3, 4
3, 4
2, 5, 6, 7
1
PANTECH
Checking Point
Check route connection : TX_PA
Check this pin 2, When Logic High,
then DCS/PCS Mode. While Logic
Low , GSM850 mode is operating.
Step 2-1