Nokia 8850 Manual Do Serviço
NSM–2
Disassembly & Troubleshooting Instructions
PAMS Technical Documentation
Page 11
Issue 1 12/1999
Nokia Mobile Phones Ltd.
System Clock
Check the signal from the C213
Layout picture B signal RFC,
should be like in SYSTEM
Layout picture B signal RFC,
should be like in SYSTEM
Check the signal from the RF side
buffer input C829. If there is signal,
check the R829,R834,R830,V800,
C834 and L800
buffer input C829. If there is signal,
check the R829,R834,R830,V800,
C834 and L800
IF NOT
Check the signal from the RF side
oskilator VCXO G830 output fron
C833. There should be 26MHz
signal.
oskilator VCXO G830 output fron
C833. There should be 26MHz
signal.
IF THERE ISN’T
Change the Hagar
N505
N505
IF IS
Change the VCXO
G830
G830
IF THERE ISN’T
CLOCK picture.
System clock picture.