Nokia Mobile Phones NSE-5 Series Service Manual page 257

PAMS
Technical Documentation
Fault finding chart for GSM transmitter
Oscilloscope
SUMMA N700 pin 41
SUMMA N700 pin 27,
47
SUMMA N700 pin 32
CRFU3 N600 pin 8, 47
CRFU3 N600 pin 39
Oscilloscope
SUMMA N700 pin 1
SUMMA N700 pin 2
SUMMA N700 pin 3
CRFU3 N600 pin 4
Spectrum analyser
SUMMA N700 pin 44,
45
Pout = –8 dBm, 116
MHz
Spectrum analyser
CRFU3 N600 pin 25, 26
Pin = –4 dBm, 116
MHz
Spectrum analyser
CRFU3 N600 pin 22
Pin = +10 dBm,902
MHz
Issue 1 07/99
VREF Vdc = 1.5 Volt
VTX Vdc = 2.8 Volt
TXP Vdc > 2.5 Volt
VSYN_2 Vdc = 2.8 Volt
VTX Vdc = 2.8 Volt
Yes
TXQN Vac = 0.4 Vpp, Vdc =
0.8 V
TXQP Vac = 0.4 Vpp, Vdc =
0.8 V
TXIP Vac = 0.4 Vpp, Vdc =
0.8 V
TXIN Vac = 0.4 Vpp, Vdc =
0.8 V
Yes
Yes
Yes
Spectrum analyser
CRFU3 N600 pin 3
Pin = –5 dBm,2036
MHz
Yes
Check
NSE–5
Troubleshooting
Check
No BaseBand
Check
No BaseBand
Check
SUMMA
No VHF Synthesizer
Check
No 116 Mhz LC Filter
Check
No UHF Synthesizer
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