CONFIDENTIAL
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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
I010 (X101)
- Check mechanical appearance of battery connector; change part if it is bent, soiled or corroded.
S300
- Check mechanical appearance of powerswitch; change part if necessary.
- Check voltage at S300: 4 VDC in case the switch is not pressed.
If voltage is not measureable or too low check especially R317 and C310.
- If switch is pressed, voltage at R317 (measure to UEM side) must decrease to 0V; otherwise you have to
exchange the switch
B200
- Check DC-voltages at C209 (0.59V) and C210 (0.42V). If voltages are not ok check lines for shorts to ground.
It also is possible that UEM D200 is defect.
- Change the crystal B200 if DC-voltages at C209 / C210 are ok but no 32.768kHz sinewave signal is measurable
(see picture below).
Note that this signal is always measurable in MJS-37 jig even though the phone is switched off.
Figure 1: 32.768kHz at C209
Figure 2: 32.768kHz at C210
N600 (Mjoelner)
- Check VR3 2.8VDC at C620.
- Check 26MHz sinewave signal at B600 (picture below). If it is not measurable check DC-voltage at both sides of
crystal B600 that normally is 2VDC. In case that DC-voltage is missing Mjoelner N600 has to be changed. If
voltage at crystal is ok but no 26MHz sinewave is measurable crystal B600 has to be exchanged.
Figure 3: 26MHz at B600
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