Nokia NSB-9 Service Manual page 188

NSB-9
Troubleshooting Instructions
Apply input signal
881.667 MHz
-90 dBm
Check RX IQ signal at
TP37
Start baseband
troubleshooting (UEM)
Page 14
OSC
Check SHF VCO
output signal at TP40
3526.4 MHz
Check Hagar ASIC
supply voltages at
TP4, TP5, TP6, TP8:
2.78 VDC ± 3%
TP10: 1.35 VDC ± 2%
TP1: 4.75 VDC ± 3.2%
Check SDATA at
TP51, SCLK TP52,
SLE TP53
Change
Hagar ASIC
N600
Nokia Corporation
CCS Technical Documentation
Start baseband
troubleshooting (UEM)
Check VCO supply
voltage at TP7:
2.78 VDC ± 3%
SA
Check VCO control
voltage at TP41:
1.8 VDC ± 200 mV
DMM
Change
Hagar ASIC
N600
Start baseband
troubleshooting (UEM)
Start baseband
troubleshooting (UPP)
OSC
DMM
DMM
Change
SHF VCO
G650
Issue 1 04/03