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START
Is it TX PWR
DOWN ?
NO
Connect on J600 a
spectrum analyzer .
Put the Pcb in test mode
and digit 9823#, 110062#,
1215#, 310#.
Is there the signal but it is
LOW ?
Is there the signal
( 902.4Mhz DM_CS
modulated )
on pin 1 of U350 ?
Check the Bias on U350 :
- Pin 6 SF_OUT
(If NOT OK check L350,U200)
- Pin 5 TX275_DPCS present if
select DCS/PCS chanel.
H
(If NOT OK GO TO
- Pin 3 TX275_GSM
present if select GSM chanel.
H
(If NOT OK GO TO
- Pin 2 TX_DCS
present if select DCS/PCS chanel.
(If NOT OK GO TO
If All are OK check U350, U200
NOTE1 or Faulty.
mercoledì, gennaio 24, 2001
GPRS Tri Band T260 Level 3 procedure
YES GO TO
YES GO TO
NO
YES GO TO
NO
on pg.11)
on pg.11)
I
on pg.12)
NOTE1 : check if any components mentioned are
correctly positioned , have not dry joint and aren't
- MOTOROLA Level3 Authorized -
For most of Signals Use a
(these signals must change their
value, depend on chanel selected)
M
on pg.9
C
on pg.10
C
on pg.10
not phisically damaged .
Rev.1
Test PCB as reference.
T260:
NO TX
pag.8
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