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RM-1 SB-052

Copyright © Nokia Corporation 2005,2006

Customer and Market Operations

Service Bulletin No. SB-052/26.10.06

EMEA Customer Care

RM-1

TROUBLESHOOTING INSTRUCTIONS FOR VINKU RF-ASIC

Version history:
Version 2

26.10.06

Service Bulletin released also for level 3

Version 1

19.10.05

Initial version

It’s possible that in small amount of Vinku RF-ASICs (codes 4380041 and
4380093) the internal regulator is not working correctly when the battery
voltage is high. Users might see different kinds of network problems due to
this.

Assemblies affected:

RM-1 (6630) product

HW IDs 4100-6110

Typical symptoms

When the battery is full (a charger is plugged to the phone or a car kit with
charging is used and message “Battery full” has been shown):

1. The phone seems to be in service (signal bars are up) but it cannot receive

any calls in GSM network. Calls are going directly to voice mail. Some
SMS’s might come through.

2. Some calls that the user make might go through, but also an error

message “Error in connection” might be seen or phone just gives up the
call creation.

3. Outgoing SMS fails with message "Message sending failed!"
4. Phone does not get the service (when just charged and booted up or after

handover from 3G to GSM)

5. Idle state current consumption with full battery might be high. The first

segment of the battery bar is used quickly.

All the problems described above disappear after some time after the charger
is unplugged as the battery voltage drops down. There is a big variation
between units; some phones start to work after few minutes some needs an
hour. Also some networks tolerate the problem better, which means that the
user may encounter these problems only when located in some specific
geographical area. The user may see the problem only when the phone is
using GSM network. The key symptom is that the problem occurs only
when the battery is full.

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RM-1 SB-052

Copyright © Nokia Corporation 2005,2006

Procedure:

1. Insert phone to the AD-23FS flash jig and CU-4.
2. Open Phoenix and detect the product.
3. Change operating mode to “Local”
4. Open CU-4/Terminal Current Consumption-window from the Tools-menu
5. Move the slider to set terminal voltage to 4300 mV. Note that the voltage

is reset back to the default when the phone in the jig is changed.

6. Move the slider a bit to reactivate the 4300 mV supply

7. Open Self Tests-window from the Testing-menu
8. Select ST_CDSP_TXC_DATA_TEST.

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Copyright © Nokia Corporation 2005,2006

9. Start self test

If the result of ST_CDSP_TXC_DATA_TEST is “Fatal” with 4300 mV,
move the terminal voltage slider to 3500mV and re-execute the self test
again. If the test passes with this voltage, the Vinku is faulty. Change
Vinku. If the test fails also with 3500 mV, the fault might be somewhere
else. Regulator faulty Vinku is usually passing the test with 3500 mV.

10. After Vinku change, the RF transmitters need to be retuned. Reflash the

latest SW and execute tunings.

Note about the spare part Vinkus

A small percentage of Vinku RFIC:s that are manufactured before week
22/2005 are suffering from this fault. If the replaced Vinku is older than that,
check the ST_CDSP_TXC_DATA_TEST with 4.3V voltage after replacing the
IC.

Markings on Vinku RF-ASIC:

Vinku RF-ASICs that are marked with old marking style (three rows) are all
suspected:

Vinku RF-ASICs that are marked with new marking style are suspected only, if
the number after “MYS” is smaller than “522” (2005/w22):

Tuning Instruction

RF must be tuned after exchanging Vinku RF-ASIC.