Nokia RH-18 - Flash Programming Do Not Work

CCS Technical Documentation
Company confidential RH-18/36/38
Issue 1 10/03 Nokia Corporation. Page 7
Flash programming do not work
The flash programming can only be done via the pads on the PWB (J396).
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).
Figure 2: Flash programming fault
Flash prgramming
do not work
Error from prommer:
"Phone doesn't set
FBUS_TX line low"
Yes
Check :
PWB.
Else defective D200*
J409, J410, J411, J412
Voltage level at 1,8VDC
Check :
R108, PWB
Yes
No
No
J396, R108
Check connection between
pad 1,2 & 3 on J396
and R108
Try reading MCU ID
with Phoenix.
Reading OK?
Try reading Flash ID
with Phoenix.
Reading OK?
Check :
Replace D450
Check :
PWB.
Else defictive D400*
Yes
Yes
No
No
Yes
Reflash phone