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Customer Care Europe, Middle East & Africa NAM-2 Repair Hints
Technical Services / SCCE Training Group Version 2.0 Approved
© 2004 Nokia Corporation
03/03/2004
© NMP 2004
Checked by:
SCCE
Approved by:
SCCE Training Group
26MHz Clk-frequency at C830
In case that CCONT N100 seems to be the responsible for not power on, check VB 3.6VDC at C129.
Check 32.768kHz square wave at J228.
Check that PWRONX decreases to 0V at S330 when pressing the power switch. Also check R118.
If these conditions are fulfilled, output voltage lines must rise to their supposed values and PURX is
released after some milliseconds by CCONT:
VBB 2.8VDC at C107
VCORE 1.8VDC at C140
VXO 2.8 VDC at C152
If one of these voltages is not measurable CCONT is faulty in all probability.
Swap the phone because CCONT is underfilled and therefore not changeable.
Also responsible for this fault could be the MAD D200. In this case check 32.768kHz square wave at
J228.
Check 13MHz Clk-frequency at C213.
Check following voltages:
VBB 2.8VDC at C201
VCORE 1.8VDC at C140
SLEEPX 2.8VDC at J226
PURX 2.8VDC at J2327
If all above mentioned works but the phone does not switch on, MAD is faulty in all probability.
Swap the phone because MAD is underfilled and therefore not changeable.
13MHz Clk-frequency at C213
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