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Pantech PG-1210 Service Manual
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Pantech PG-1210 Service Manual
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User manual
Table of content
Contents
Table Of Contents
Table Of Contents
SECTION 1 INTRODUCTION
use.
G ENERAL
SECTION 3 OPERATION
D ISPLAY
SECTION 4 THEORY OF OPERATION
Part
S ECTION
R EGULATION P ART
T RANSMIT S ECTION
SECTION 6 EQUIPMENT REPAIR PROCEDURE
CHECK
not working
not ringing
VIBRATOR NOT WORKING
SIM CARD PART
CHARGER PART
T EST CONDITIONS
P OWER S UPPLY C HECK POINT
P OWER AMPLIFIER MODULE
VC-TCXO
A NTENNA S WITCH M ODULE
PG-1210 Service Manual
Step 2-3
Fig.6-4 U505 PAM’s PCB Layout
6.5.3 Power Amplifier Module
Step
Test
point
Typical Value
Condition
Checking Point
3-1
U505
Pin#2
Logic High
2, 3, 4
Check route connection : TX_PA
Logic High
3, 4
3-2
U505
Pin#4
Logic Low
2, 5, 6, 7
Check this pin 2, When Logic High,
then
DCS/PCS
Mode.
While
Logic
Low , GSM850 mode is operating.
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