Nokia NEM-4 Series Troubleshooting Instructions page 14

NEM-4
BB Troubleshooting
Memory
faults
page2
"Secondary
receive fail" or
"Algorithm send
failed"
message?
No
Prommer
message about
sdram failure?
No
Wrong
manufacturer ID
and device ID
No
"Flash informs
about a failure"
during flashing
No
Retest
ADSP Flashing
Page 6(a)-12
Company Confidential
Yes
Activity in SDRAM Activity in sdram
Clk J314 pad?
clk J108 pad?
Yes
Change UPP_WD2
Yes
Change Flash Chip
according to Phoenix
messages
If both chips report wrong
ID's -> change UPP_WD2
Yes
Copyright  2003 Nokia Corporation
Company Confidential
CCS Technical Documentation
Change UPP_WD2
Change SDRAM
Yes
No
Check flash0 bypass caps, check
Vpp connection to flasher, Check
Vpp resistor (R314, 4.7k) Vpp resistor(4.7k)
Ok->Change flash0
Yes
Voltages
Voltages
VmemA and
VmemA and
Vio OK?
VioA ok?
No
EM
troubles
Issue 1 09/2003