Service manual

damaged part.
4. Check for Cold Solder
or Unsolder or Damaged
FL457
Not O.K. Reflow or Replace
FL457.
9.TRANSMITTER PROBLEMS
TROUBLE SHOOTING OBSERVATION REPAIR SUGGESTED
1. Check the Antenna and
Antenna Contact Clip on the
PCB.
Not O.K.
Replace Antenna or
Reflow or Replace
Antenna Clip.
2. Check PA U400 for GSM
Band.
Not O.K.
Replace PA U400.
3. Check PA U300 for DCS
Band.
Not O.K.
Replace PA U300.
4. Check exiter Amp Q455
Not O.K.
Replace Exiter Amp
Q455.
5. Check Tx Vco IC U250 Not O.K. Replace U250
6. Check MCIC (FL300) Not O.K. Replace FL300