Nokia 5510 - Page 48

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RF Troubleshooting PAMS Technical Documentation
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From WinTesla chose:
Product > Band > EGSM
Testing > RF Controls >
Rx continuous > Ch 60
Spectrum Analyzer
VCO output ( G500 out)
3788 MHz
No
Yes
PLL block functional
Oscilloscope
VCTCXO Power Supply
(G502 Vcc)
2,7 V
Oscilloscope
VCTCXO output
(G502 out) 26 MHz,
approx. 1.2 Vpp
VCTCXO is dead
Oscilloscope
VCO Power Supply
(G500 Vcc) 2,7 V
Yes
No
Check CCONT,
Software?? Phone not in
function
Check CCONT,
Software?? Phone not
in function
Spectrum Analyzer
VCO output ( G500 out)
Some signal between 3
and 4 GHz
VCO is dead
Check HAGAR,
wrong writting to HAGAR
(SCLK,SDATA,SLE,
HAGARRESET)
Yes
No
No
Yes
Yes
No