Flash Programming Does Not Work - Nokia NHM-8NX Series Troubleshooting Instructions

NHM-8NX
Troubleshooting Instructions

Flash programming does not work

The flash programming can only be done via the pads on the PWB (J100).
In case of Flash failure in FLALI station, problem is most likely related to SMD problems.
Possible failures could be short-circuit of balls under µBGAs (UEM, UPP, FLASH). Missing
or misaligned components.
In flash programming error cases the flash prommer can give some information about a
fault.
The fault information messages could be:
- Phone doesn't set FBUS_TX line low
Because of the use of uBGA components it is not possible to verify if there is a short cir-
cuit in control- and address lines of MCU (UPP) and memory (flash).
Page 8
Flash prgramming
do not work
Error from prommer:
"Phone doesn't set
FBUS_TX line low"
Yes
J100, R108
Check connection between
No
pad 1,2 & 3 on J100
and R108
Yes
J409, J410, J411, J412
No
Voltage level at 1,8VDC
Yes
Try reading MCU ID
with Phoenix. No
Reading OK?
Yes
Try reading Flash ID
with Phoenix. No
Reading OK?
Yes
Reflash phone
ãNokia Corporation
PAMS Technical Documentation
Check :
R108, PWB
Check :
PWB.
Else defective D200*
Check :
PWB.
Else defictive D400*
Check :
Replace D450
Issue 1 05/02