CONFIDENTIAL
11 (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
D400 (UPP)
Check following signals:
- VIO 1.8VDC at C400
- VCORE 1.5VDC at C451
- SLEEPCLK 32kHz at J404
- 26MHz system clock at J425
- PURX 1.8VDC at J403
- If one of the above mentioned signals is not measurable probably UEM is faulty; swap the phone as UEM is not
changeable. The only exception is a missing system clock – in this case check B600 and N600.
- If signals are okay 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.
Figure 5: Sleepclock at J404
Figure 6: 26MHz at J425
N700 (Poweramplifier)
- It has been observed that in several cases the power amplifer N700 was responsible for the mentioned fault. A good
indicator for this is the current consumption: if N700 is defect the current often rises up to more than 0.5A directly
after connecting the phone to the power supply. To ensure that the PA is responsible, remove L703. If the current is ok
now, the PA is defect in all probability.
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