Checking Flow
SETTING : Attach the headset and
“
Listen to Radio
”
at Radio menu
Start
Check the Freq. at
pin4 of Q102.
Freq.= 32.768kHz?
(Shown Graph 1)
X101 is working?
Check the pin1 of
X101.
Freq.= 32.768kHz?
Check the condition of Q102
and external component.
Replace X101
Audio signal
appear at
R332, R307?
Check the FM Receiver circuit,
input voltage, soldering.
If problem, replace the defected
component.
Audio signal
appear at pin6
and pin8 of
U104?
Check the FM AMP circuit.
If problem, replace the defected
component.
Refer to Earphone Trouble part.
Yes
No
Yes
Yes
Yes
No
No
No
Summary of Contents for RD3500
Page 2: ...CDMA MOBILE SUBSCRIBER UNIT LG KD3500 SINGLE BAND CDMA MOBILE PHONE SERVICE MANUAL ...
Page 24: ...LG KD3500 LGE LG Electronics Inc 22 21 1 U201 QSC6010 CHAPTER 4 BGA IC Pin Check ...
Page 25: ...LG KD3500 LGE LG Electronics Inc 23 21 2 U310 Memory ...
Page 28: ...Circuit Diagram DP101 DP101 ...
Page 36: ...4 3 2 Charging Trouble Test Points Circuit Diagram CON409 CON409 pin1 ...
Page 47: ...4 3 10 LCD Trouble Test Points Circuit Diagram C O N 3 0 4 CON304 pin3 ...
Page 50: ...CON302 Test Points Circuit Diagram 4 3 11 UIM Trouble R375 R378 R361 R376 ...
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