CONFIDENTIAL
13 (18)
Customer Care Europe, Middel East & Africa NHM-8 / RH-9 Repairhints
SCCE Training Group Version 2.0 Approved
2003 Nokia Mobile Phones
Date 10-03-2003
© NMP 2003
Checked by: SCCE
Approved by: Training Group
CHAPTER 5: Charging Faults
Charging not
possible
Run energy
management
calibration.
battery temperature failed
battery size failed
battery voltage failed
charge current failed
charge voltage failed
Try to charge after
calibration.
Check BTEMP-line for shorts to
GND, check C746, L711 for cold or
broken soldering or
change X101.
OK
nOK
Check BSI-line for shorts
to GND, check C747, L710
or change X101.
Check resistance of R200
(0.22 Ohm).
UEM D200 is faulty.
UEM D200 faulty
in all probability.
check / change X101.
Check F100, L100, V100 and C100
for cold or broken soldering. Or
shorts to GND, if failure persists
UEM is faulty .
In case the charging of battery fails, first thing to do is to run energy management calibration.
Note that calibration only works with JBV-1, MJF-16 docking station adapter and 12VDC power supply.
In case charging does not work permanently or charging is possible from time to time only, especially check spring contacts of
bottom connector I007 and battery connector I010 if bent, soiled or corroded. Also make sure that contact pads for the
connectors on the PCB are clean. If necessary clean the PCB with an appropriate amount of alcohol. Do not use any scratching
or rubbing tools!
Whenever a part has been changed in the charging circuit, you have to run energy management calibration to ensure a proper
function of the phone!
I007 / I010
- Check mechanical appearance of battery connector and bottom connector; change parts if spring contacts are bent,
soiled or corroded. Also ensure that contact pads for both connectors on the PCB are clean.
F100
- Check resistance of fuse; must be zero Ohm.
V100
- Check that V100 does not cause a short circuit to ground. Resistance of VCHAR-line to ground normally is 2.6kOhm.
D200
- If all steps above are checked, probably UEM (D200) is faulty. Swap the phone because UEM is underfilled and
therefore not changeable.
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