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Flow Chart of Troubleshooting
9-20
This Document can not be used without Samsung's authorization
9-2. RF
** When testing TX chain, check ALL RF devices, resistors, inductors, and capacitors.
9-2-1. GSM850/GSM900 Transmitter
TX ON: Level 5
Check Antenna
Switch Control
Re-solder or Change
PAM100
END
Check
OSC100
U103
pin31
≥
2.65V
Check PAM100
PIN8
=H,
PIN9
=L
PIN10
=H
PAM100 pin2
≥
-15dBm
Re-solder
R103,
C144
U103 PIN15
≥
-15dBm
Check U103,
PAM100
NO
YES
NO
YES
YES
NO
YES
Summary of Contents for GT-C3510
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