LG GR-L208NN Service Manual page 72

TROUBLE DIAGNOSIS
CLAIMS.
7. Sounds
1) Compressor compartment operating sounds.
2) Freezer compartment sounds.
3) Bowls and bottles make contact on top shelf.
4) Refrigerator roof contact.
5) Refrigerator side contact.
6) Insufficient Lubricants on door hinge.
CAUSES AND CHECK POINTS.
Transformer sound.
Drip tray vibration sound.
Back cover machine sound.
Condenser drain sound.
Fan motor sound.
Normal operating sound.
Vibration sound.
Sounds from fan
Fan guide contact.
contact.
Shroud burr contact.
Damping evaporator contact.
Residual frost contact.
Unbalance fan sounds.
Motor shaft Supporter disorted.
contact sounds. Tilted during motor assembly.
Resonance.
Evaporator noise.
Evaporator pipe contact. –– No damping evaporator.
Sound from refrigerant. –– Stainless steel pipe shape in
Sound from fin evaporator and pipe during expansion
and contraction.
Its own fault. –– Core gap.
Bad connection. –– Correct screw connection.
Bad assembly.
Distortion.
Foreign materials inside.
Bad connection.
Partly damaged.
Not connected.
Bad pipe caulking.
Aged rubber seat.
Bad torque for assembling motor
bracket.
Poor treatment Cord heater.
Narrow evaporator interval.
Unbalance. Surface machining conditions.
Fan distortion.
Misshappen.
Burr.
Ice on the fan. –– Air intake (opposite to motor
rubber assembly.)
accumulator.
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HOW TO CHECK