Fm Radio - Nokia RH-27 Series Technical Documentation Manual

CCS Technical Documentation

FM Radio

FM Radio
faults
Is the FM radio
working?
YES
Does the FM radio
produce a "Bong"
sound when
changing channels
(frequencies)?
YES
Check soldering
under C358/R359/
R360/C362. If not
working, then
change FM radio
chip (N356)
Issue 1 11/2003 Confidential
Power on the phone
and turn FM radio on
NO
by Phoenix
YES
Measure VFlash2
(VCCD/VCCA/
VCCVCO) at C359/
C372/L357. Is it
2.8V?
YES
Measure FM1=1.8V,
FM2=11 Khz,
FM3=1.8V, and
FM4=32 Khz. Is it
OK?
NO YES
Measure FMANT at
L358. Is it 1.0V?
YES
FM
END
Radio
faults 2
©2003 Nokia Corporation
Troubleshooting - Baseband
Check solder on
N356, X101, and
NO
replace N356 if not
working.
Check VFlash2 line
NO
Change UPP (D400)
NO
Check L351, L358,
C367, C378, C379,
C112, C113, C114,
C115. If OK, check
NO
Tomahawk
connector (X101) on
pin 11, 12, 13, 14
RH-27
Page 55