NSB-9
Troubleshooting Instructions
CCS Technical Documentation
Page 14
Nokia Corporation
Issue 1 04/03
Check RX IQ signal at
TP37
9
8
9
Apply input signal
881.667 MHz
-90 dBm
9
Start baseband
troubleshooting (UEM)
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%
8
Start baseband
troubleshooting (UEM)
9
Check SHF VCO
output signal at TP40
3526.4 MHz
8
Check VCO supply
voltage at TP7:
2.78 VDC
±
3%
9
8
9
Check VCO control
voltage at TP41:
1.8 VDC
±
200 mV
8
9
Change
Hagar ASIC
N600
Change
SHF VCO
G650
Check SDATA at
TP51, SCLK TP52,
SLE TP53
8
Start baseband
troubleshooting (UPP)
9
Change
Hagar ASIC
N600
Start baseband
troubleshooting (UEM)
SA
OSC
DMM
DMM
DMM
OSC
8
Содержание NSB-9
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