NSB-9
Troubleshooting Instructions
CCS Technical Documentation
Page 8
Nokia Corporation
Issue 1 04/03
Check SDATA at
TP51, SCLK TP52,
SLE TP53
8
Start baseband
troubleshooting (UPP)
9
9
9
Change
Hagar ASIC
N600
Check PA output
signal at TP60
836.6 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 TP27
8
9
Change PA
N700
Check TXC
signal at TP23
9
Check coupler output
signal at TP61
836.6 MHz
8
9
Change
coupler
L750
Check TX output
signal at TP30
836.6 MHz
8
9
Check antenna switch
control signal at TP62
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