User Guide

CCS Technical Documentation Troubleshooting Instructions
NSB-9
Issue 1 04/03 Nokia Corporation Page 11
Check SDATA at
TP51, SCLK TP52,
SLE TP53
8
Start baseband
troubleshooting (UPP)
99
9
Change
Hagar ASIC
N600
Check PA output
signal at TP25
1880 MHz
Check PA supply
voltage at TP9
VBATT (∼3.9 VDC)
8
9
8
Check VBATT path
from battery connector
to PA
Check PA control
voltage at TP26
8
9
Change PA
N700
Check TXC
signal at TP23
9
Check coupler output
signal at TP28
1880 MHz
8
9
Change
coupler
L750
Check TX output
signal at TP30
1880 MHz
8
9
Check antenna switch
control signal at TP29
2.78 V squarewave
Change
antenna
switch Z500
9
8
Change Hagar
ASIC
N600
TX is ok
9
Change
Hagar ASIC
N600
Start baseband
troubleshooting
(UEM)
8
DMM
OSC
OSC
OSC
SA
SA
SA
OSC