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Check VCORE = 1.8 VDC at C400; PURX = 1.8 VDC at
V130 Pin 44. If not ok, check UEM D200.
Check System Clk = 26 MHz, Vpp = 800 mV at C752 for
NPE-4, and at R618 / for NPL-1 (See picture below)
Oscilloscope settings:
Ampl:
500mV
Time/Div:
20ns/Div
AC/DC/GND:
AC
If not ok, check 26 MHz G740 (NPE-4) circuit /B601 (NPL-1) circuit.
This step is only for NPE-4.
For NPL-1 phones go one step further.
Check RFClk = 13 MHz, Vpp = 600 mV at C424.
If not ok, check/change N600 Hagar.
Check VIO = 1.8 VDC at C450. If not ok, check VIO line to UEM D200 for shorts or disconnections and change faulty
components.
Check VPP at C454 = 1.8VDC
If VPP is not ok - check C454. If UPP D400 is faulty, change PWB, because UPP is not changeable.
Check Vana at C278 = 2.8VDC
If not ok - check C278, if C278 ok - UEM D200 will be faulty. Change PWB, as UEM is not changeable.
Resume
Change Flash D450 in the following cases and if all signals and voltages described above are ok:
- Mechanical damages (see picture in Additional Information/Example of broken Flash D450 on page 7).
- IMEI not rewriteable or SIMLock Test fails.
- Failure code messages after failed flash update! Except codes C683 or C686 (change Bluetooth module in this case).
After changing the Flash D450, rewrite product code, HW-ID, IMEI and SIMlock settings.
If the fault persists, probably UEM D200 is faulty and not changeable. Change the PWB.
Note! Rewrite SIMlock and IMEI data by use of NOKIA SECURITY PASSWORD and tune the phone again, if the procedure is
permitted to you (see General SB–037).
© NMP 2003
CONFIDENTIAL
NPE-4 6310/NPL-1 6310i
Date 22.04.2003
Checked by:
SCCE Training Group
12 (29)
Repair Hints
Version 3.0 Approved
Approved by:
SCCE
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