Advertisement
P
Are present on pin 3 and 1 of
Q110 the *GSM_SEL and
*DCS_SEL from MAGIC IC?
(the signal level depend on
channel selected)
Is present the RX_EN
signal on pin 4 of
Q112 from
WHITECAP ?
Is present the RF_V2
signal on pin 3 of Q112
?
Is present the RX275 on
pin2 of Q112 ?
Are present RX275_GSM
and RX275_DCS on pin 4
and 6 of Q110 ?
Is present
RX275_GSM_PCS on
pin2 of Q2101 ?
Is present RX275_DPCS
on pin2 of Q2102 ?
The problem is elsewhere.
mercoledì, gennaio 24, 2001
GPRS Tri Band T260 Level 3 procedure
For most of Signals Use a Test
PCB as reference.
(these signals must change their value,
depend on chanel selected)
NO
YES
NO
YES
NO
Check the presence of VREF on C213 from U900.
If NOT OK Check U900 NOTE1 or Faulty.
If OK Check Q202 and U200 NOTE1 or Faulty.
YES
NO
YES
NO
YES
NO
YES
NO
YES
- MOTOROLA Level3 Authorized -
Check U200 and
Q100 NOTE1 or
Faulty.
Check U800 NOTE1
or Faulty.
Check Q112 NOTE1 or
Faulty.
Check the presence of *GSM_SEL and
*DCS_SEL on pins 1 and 3 of Q110.
If NOT OK Check U200 NOTE1 or Faulty.
If OK Check Q110 NOTE1 or Faulty.
Check Q2101
NOTE1 or Faulty.
Check Q2102
NOTE1 or Faulty.
Rev.1
T260:
NO RX CONTROL
MATRIX
pag.6
Advertisement
