User Guide

CCS Technical Documentation Troubleshooting
NPM-2NX
Issue 1 07/02 ãNokia Corporation Page 11
Figure 4: Fault tree, phone does not power up
Flash Programming does not work
Flash programming procedure
• Phone communicates with prommer via production test pattern, using signals:
Try to start phone to
test or local mode
Check the
power key
Check
X101,C108,
C109,Z101
Measure
Vflash1,Vana,Vio,Vcore
,VR3 when pwr key
pressed
Check 13MHz /GSM
or 19.44/TDMA
RF-clock from C420
Check that purx
goes up to 1.8V
Change UPP
(D400)
Change the
UEM (D200)
OK
Measure VBAT
from C262
Check R202,
R203, R205,
C217, C220
Check G801
(missing,
misaligned)
Measure J406.
1.08
MHz/TDMA
and
1.00MHz/GSM
Check
C420
Check 19.2MHz
from G801
See RF
troubleshooting
FAIL
Re-flash phone
OK
OK
FAIL
VR3
missing
FAIL
OK
OK
OK
Check
R816,C867,C8
66, R817, C868
Change
G801
OK
FAIL
FAIL
OK
OK
FAIL
OK
OK
OK
FAIL
Programmng ok,
but phone doesn't
start
Go to flash failure
chart
Programming
fails