LC-60UD20KN (serv.man3). (LCD Module Edition) - Sharp TV Service Manual (repair manual). Page 5

For example:

In the case of the following Condition in LCD Module.

Before exchanging
Parts Code

Qty

Condition Group No

DRDARB169WE01

1 LED Assembly

-

-

CRDARB169WJ01

1 KS HEAT SPREADE

NSFTZA672WJFN

2 SHAFT FOR LGP

PRDARB169WJFW

1 HEAT SPREADER     

RUNTKB269WJZZ

1 LED-PWB

U011

RUNTKB269WJZZ

1 LED-PWB

Normal

U011

After exchanging

Parts Code

Qty

Condition Group No

DRDARB169WE01

1 LED Assembly

-

-

CRDARB169WJ01

1 KS HEAT SPREADE

NSFTZA672WJFN

2 SHAFT FOR LGP

PRDARB169WJFW

1 HEAT SPREADER     

RUNTKB269WJZZ

1 LED-PWB

U033

RUNTKB269WJZZ

1 LED-PWB

U033

Remarks

Remarks

Normal

-

-

It is not necessary that new LED units have same “Group No.” as removed units.
However, all new LED units per a module need to be unified Group. 
In this case, 

“Group No.”  

is unified U033.

Countermeasure:

Remove LED assembly, and replace it with a new unit.

New unit:

DRDARB169WE01 (1pcs)

Note: Don't order RUNTKB269WJZZ in order to exchange failure parts.