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FM Radio Problems
START
Go to
Is the
Loudspeaker
No
Loudspeaker
No
Problems TRS guide
Ok
Go to
Hands-Free (PHF)
Yes
Problems TRS guide
1:
Remove the DCIO/SEPI Cable
2:
Connect:
Customized FM Radio Cable
Black Lab Plug to
TRS Fixture GND Input and
PHF Connector to the
Phone System Connector
Signal Generator
Instrument Settings:
Frequency: 103 MHz
Amplitude/Level: 50 μV
FM Dev:
+/-22.5 kHz
FM Rate:
1 kHz
More than
SL 5 Replace
40 mV AC Pk-Pk
N2000
Yes
1 KHz signal at MP 7
No
SL 4 Escalate
(C3145) and MP 6
(C3146)
SL 5 Replace
Is any of
C3145 or C3146
Yes
C3145 or C3146
No
SL 4 Escalate
Short circuit
No
SL 4 Replace
1.8 Volt DC
N1300
No
at MP 10 (R3302
SL 5 Replace
FM_INT)
N2010
TROUBLESHOOTING
FM Radio
Is
not
working both with
Loudspeaker and
PHF set
Yes
1:
Load ETS SW into the Phone
2:
Use TRS Fixture
Connect:
VBATT and DCIO/SEPI
3:
Use Fault Trace SW and go to:
Audio and FM Radio
FM Radio
Audio Output:
Loudspeaker
Frequency:
103 MHz
Set Fm Radio
Signal Generator
Instrument Settings:
Change Amplitude/Level to:
800 μV
Is there
Go to
any signal on
Yes
FM Radio Antenna
MP 7 (C3145) and
Problems TRS guide
MP 6 (C3146)
Replace
Yes
N1300
FM Radio Problems - FM Radio Antenna Problems
FM Radio Antenna Problems
START
Is L2408
Replace
No
= Max 1 Ohm
L2408
Yes
SL 5 Replace
Is L3300
L3300
No
= Max 1.5 Ohm
SL 4 Escalate
Replace
N1300
Is the
Signal
Ok
SEMC Troubleshooting Manual
Is the
FM Radio Problems
No
FM Radio Problems
TRS guide
TRS guide
done?
Yes
Use the
Digital Multimeter Instrument (DMM)
for these measurements
Is C3306
SL 5 Replace
Yes
Short Circuit
Yes
SL 4 Escalate
No
Is MP 9
SL 5 Replace
(X2405_Pin 2)
Yes
No
Connected to
SL 4 Escalate
GND
Replace
No
V2413
Claim Component
Yes
N1300
1228-1147 rev. 1
C903
Go to
C3306
X2405
27
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Table of Contents
Troubleshooting
