Nokia NSB-9 Service Manual page 185

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