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Check technical 
information
- Fix information
- S/W Version

N

Y

Technical 

information?

Check 
input 
signal

Signal
input?

Y

N

External Input

And Component

Recognition error

Check and fix 
external device/cable

RGB,

HDMI/DVI Optical

Recognition

error

Replace Main B/D

Replace Main B/D

Fix in 

accordance

with technical 

information

12

Check 
location of 
noise

Identify 
nose 
type

Replace PSU (with LED driver)

Replace LED driver 

Check location 
of noise

OR

※ When the nose is severe, replace the module
(For models with fix information, upgrade the 
S/W or provide the description)

OR

※ If there is a “Tak Tak” noise from the 
cabinet, refer to the KMS fix information and 
then proceed as shown in the solution manual
(For models without any fix information, 
provide the description)

※ Mechanical noise is a natural 
phenomenon, and apply the 1st level 
description. When the customer does not 
agree, apply the process by stage. 
※ Describe the basis of the description 
in “Part related to nose” in the Owner’s 
Manual.

13

Replace module

Zoom part with 
exterior damage

Replace cabinet

Replace remote controller

Replace stand

☞A28

14

Replace module

Zoom part with 
exterior damage

Replace cabinet

Replace remote controller

Replace stand

☞A28

14