CONFIDENTIAL
10 (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
- Check signal of 26MHz reference clock oscillator at J425 (see figure below).
If signal is not measurable (at least as a short pulse) but 26MHz sinewave at B600 is ok you have to exchange
Mjoelner N600.
Figure 4: 26MHz at J425
D450 (Flash)
- Check if current consumption remains on 18mA (in repair jig supplied with 8VDC). This indicates that Flash D450
probably is empty. Try to make SW-update. If any failure message appears during flashing, try SW-update a second
time. A failure message C101 or C102 from prommer box indicates that D200 or D400 is defect in all probability. In
case of failure message C586 the problem may be solved by changing the Flash D450.
Note that in this case you have to rewrite IMEI and SIMlock data. Furthermore you have to
run all RX/TX-tunings, energy management calibration and CTI calibration!!!
D200 (UEM)
- check 32.768kHz sinewave at C209/210
- check VANA 2.8VDC at C206
- check VIO 1.8VDC at C207
- check VCORE 1.5VDC at C208
- check VR3 2.8VDC at C227 (at least a short pulse!)
- check PURX 1.8VDC at J403
- if one value is not measurable or too low, check the corresponding line for short circuit to ground. If resistance of line
seems to be ok UEM D200 is faulty in all probability - swap the phone as UEM is not changeable.
If all above mentioned signals are ok try to flash the phone. A failure message C101 or C102 from prommer box
indicates that D200 or D400 is defect in all probability. In case of failure message C586 the problem may be solved by
changing the Flash D450.
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