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START
Download into emmibox the correct
Software, connect the phone using
EXT_B+ Supply(about 4,5V) to
Emmi_box and check if the phone
Download the program.
Is B+ voltage
present on
C915 ?
Make S.C. on R911 watch_dog close
C913 and check following voltages:
V_BOOST = 5,6 V on C913
V2 = 2,7 V on C939
V3 = 1,87 V on C910
V_REF = 2,8 V on C919
Is the Main frequency
of Y200 on R244
(close U200)
present and correct
(26 MHz) ?
Is the Frequency
13Mhz present and
correct on R238 ?
(close U200)
A
mercoledì, gennaio 24, 2001
GPRS Tri Band T260 Level 3 procedure
after few seconds phone power up correctly
Still NO Power up
NO
YES
YES
NO
YES
NO
YES
NOTE1 : check if any components mentioned are
correctly positioned , have not dry joint and aren't
- MOTOROLA Level3 Authorized -
T260:
NO POWER UP
For wrong V_BOOST1 check in
NOT OK
sequence L901,CR902,R904 and U900
For other voltages check for any short to
ground, else check U900 NOTE1 or
Check the following Bias:
RF_V1 on Q201 (2.7 V C217)
RF_V2 on Q202 (2.7 V C215)
If NOT OK Check the correct voltage on C213
(VREF from U900) than the rispective FET and U200 to
If OK Check Y200 and U200 NOTE1 or faulty.
Check the 13Mhz Clock on C225.
If NOT OK verify CR248 and respective
components NOTE1or faulty.
If OKverify U200 NOTE1 or faulty.
not phisically damaged .
Rev.1
Flash the Language +
Flexing and make a
complete Test
Check EXT B+ line from
J600 TO CR903. If OK
Check J600 and CR903
NOTE1 or faulty
NOTE1 or faulty.
faulty.
solve the Fault.
pag.13
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