User Guide

RH-12/RH-28
Baseband Troubleshooting Instructions CCS Technical Documentation
Page 8 Nokia Corporation Issue 1 02/04
Charging Failure
Charging fails and no current
drawn from 'charger'
Measure Vchar voltage on V101.
Is it > 3,0V?
Yes
Check:
X101, F100, C121, V101, C102,
C103 and PWB
NO
Recalibrate charger circuitry and
retest. Did it work ?
Yes
Display information when charger
connected: "Not charging"
Recalibrate charger circuitry and
retest. Did it work ?
Yes
ENDYes
Verify through Phoenix that BSI =
~75kOhm (BL-5C) and BTEMP =
~47kOhm @ roomtemperature
(~25C)
No
Check:
BSI: Battery (BL-5C), C100, R203,
pwb and R206
BTEMP: R100, C101, R202, pwb
and R207
No
Yes
Measure voltage on R200 towards
D200. Should be the same as
Vbat voltage
D200 (UEME) is faultyNO
END
Yes
Yes
Phone should work. If not change
whole engine board
Check:
R200, D200 (UEME) and pwb
No