Poor Focus - LG T910B Service Manual

Adjust focus VR.
Improved focus?
NO
Check focus leads from
FBT to CRT Socket.
Check the CRT Socket.
Dynamic focus circuit is
right?
YES
Replace the CRT and verify focus.
Degaussing
Purity is right?
NO
Degaussing circuit is right?
YES
Replace CRT and verify purity.

22. Poor Focus

YES
NO
23. Purity Failure
YES
NO
- 32 -
Aging monitor and
check for focus change.
Refer to 15 Dynamic
Focus Failure.
Done.
Refer to 6 NO Degaussing.