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START
Is thermistor problem ?
(check it using gate22
processing test)
NO
Put the phone in
test mode and digit
500255#
Is there on pin3 of Q900
about EXT_B+ voltage ?
YES
Is there 0Volt on pin4 of
Q900 ?
YES
Is there about EXT_B+
voltage on pin4 of J604
YES
Check Q900 NOTE1 or
Faulty
mercoledì, gennaio 24, 2001
GPRS Tri Band T260 Level 3 procedure
YES
Is there 2,7Volt on
BATT_THERM
terminal on pin 2 of
J604 ?
Without battery, Is there
2,7Volt on pin1 of U905 ?
(with battery it must be
0Volt).
NO
Check R913
NO
Check U900 NOTE1 or
Faulty.
NO
Check Q900 NOTE1 or
Faulty and J604
NOTE1.
NOTE1 : check if any components mentioned are
correctly positioned , have not dry joint and aren't
not phisically damaged .
- MOTOROLA Level3 Authorized -
Rev.1
NO
Check Q914,U905 and
YES
NO
YES
Check U800 NOTE1 or
T260:
NO
CHARGER
relative discrete
componets NOTE1 or
Faulty.
Check U905 and Q908
NOTE1 or Faulty.
Faulty.
pag.22
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