LG KP500 Service Manual page 79

5. Trouble shooting
L400
LGE Internal Use Only
START
Check Speaker ís
Contacts are clear.
Yes
Input Signal is
High(TP1 C206,
TP2 C207) ?
Yes
Output Signal is
High(TP3 C212,
TP4 C213)?
Yes
Signal is
High(L400,
L403)?
Yes
Assemble
- 80 -
Speaker contact
L403
No
Resolder/Replace
Speaker
No
Replace Main Board
No
Replace Audio
AMP(U200).
No
Replace L400 , L403
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