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4. TROUBLE SHOOTING
LGE Internal Use Only
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
A condition is
Good?
Replace CN202
Yes
No
Yes
Check a condition of
U202 soldering
Give the additory solder in
L200, C202
No
Yes
Replace Main PCB Board
No
A condition is
good?
A condition is
good?
A condition is
good?
Replace Board
Replace U202
Yes
No
FM_Radio
Working is good?
No
Yes
A condition is
good?
No
Yes
Check a condition of CLK
(R228)
Check a condition of Power supply
points(C222, C224, C234)
; Reasonable range (3.1V > Cxxx > 2.7V)
Check a condition of FM tuner Matching
components (L200, C216)
Check a condition of
Ear_jack_connector
soldering(CN202)
Finish
Check a condition of
TP1, U203 soldering
Give the additory solder in
TP1, U203
Check a condition of FM_radio
Performance
Yes
Replace Board
No
CHECKING FLOW