Memory Troubleshooting - Nokia NHL-2NA Series Troubleshooting Instructions

NHL-2NA

Memory troubleshooting

Most memory related errors are found through flashing the device, flashing the device is
therefore recommended before any of the steps described in this chapter. Check flashing
troubleshooting section first.
There are however a few memory related errors that cannot be found through flashing.
• SDRAM partially damaged
This can mean that the sdram component itself is partially damaged and all the
memory locations cannot be successfully accessed or there is a soldering problem
somewhere either under UPP or sdram.
Change
sdram
• flash1 (D310) is partially/totally damaged
During flashing the manufacturer, device and revision id's are read, but flashing
is done based on id's of the flash0 (D311). This means that one cannot see any
error messages displayed on Phoenix window during flashing if flash1 is failing.
Id's are however displayed on the Phoenix window and successful read of flash1
id's can be checked from there. One good way to test flash1 functionality is to
format it(from Phoenix).
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Sdram fault
suspected
No
Does the phone
boot to local
mode?
¤Nokia Corporation
CCS Technical Documentation
Yes
Run sdram BB selftest
If fail -> change sdram ->
retest -> if still fails ->
change UPP WD2
Issue 1 07/02