LG CJ98 Referenzhandbuch

[Others][Apply the modified main board to improve Disk Open / Close malfunction.

(Measure and replace the main board)]

Service Bulletin

Applicable for Serial Number : ALL Serial

1. Repair Instruction

For repairing this issue, we need to change Main Board after checking resistor value.

1) Measurement and replacement of main board is applied to the use of long-term inventory and to all boards to be

received

from the field in the future

2) If issue is happened, Change from issue Main Board to improved Main Board after checking the resister value because it

has

no Part Number changing.

(Improved Main Board information : The Board that is produced after ‘19.3.27 / ‘19.3.29 / ‘19.4.8)

The Board after ‘19.3.27 : CJ98, CJ88, CJ87

The Board after ’19.3.29 : CJ45, CJ44, CJ65, CK57, CK56, CK43, CK99

The Board after ‘19.4.8 : OJ98, OK99, OM4560, OK45, OK55, OK75

※ Please refer

to next page for each model’s service method

Page 1

Applicable for models MINI / Onebody

- MINI *(CJ98,CJ88,CJ87,CJ65,CJ45,CJ44,CK99,CK57,CK56,CK43)

-Onebody *(OJ98, OK99, OM4560, OK45, OK55, OK75)

Bulletin Type : SVC Notice Parts Others Applicable only with symptoms with every

repair

Symptoms Disc Tray does not work when we push Disc

open or Disc close button

Picture

Cause Open or Close signal of the models that use

MCS DSP IC is affected to each set impedance



Product : Mini / Onebody / Louder

Bulletin # : PNZ201900013-01

Release Date : 2019.08.22

Service Bulletin

Page 2

Product : Mini / Onebody / Louder

Bulletin # : PNZ201900013-01

Release Date : 2019.08.22

* The picture that we check resistance value with multi meter

Measurement value of resistor for each model

- If it is about 4.7KΩ, Change Main Board.

Measurement value of resistor for each model

-If it is about 470Ω, we don’t need to change

Main Board.

4.669kΩ ≒ About 4.7kΩ

0.4668kΩ ≒ About 470Ω

1. Model : CJ98,CJ88,CJ87

Main PCB : EAX67173201 Only

관련 ECO NO : EKNJ300150

Change Details : R505, R506 : 0RJ4701C678(4.7KΩ, 1005, 5%, 1/16W) → 0RJ4700C678(470Ω, 1005, 5%, 1/16W)

* It should support only the model that produced before 2019.3.27

Page 3

EAX67173201 Main PCB (The Upper Surface)

Check the chip resister value

with Multi tester

After checking R505 or R506 resister value

-If it is about 4.7KΩ, Change Main board

-If it is about 470Ω,

We don’t need to change Main board

Service Bulletin Product : Mini / Onebody / Louder

Bulletin # : PNZ201900013-01

Release Date : 2019.08.22

2. Model : CJ45,CJ44

Main PCB : ~ EAX67136103

ECO NO : EKNJ300169

Change Details : R500, R502 : 0RJ4701C678(4.7KΩ, 1005, 5%, 1/16W) → 0RJ4700C678(470Ω, 1005, 5%, 1/16W)

* It should support only the model that produced before 2019.3.29

Page 4

EAX Main PCB (The bottom surface)

Check the chip resister value

with Multi tester

Service Bulletin Product : Mini / Onebody / Louder

Bulletin # : PNZ201900013-01

Release Date : 2019.08.22

After checking R500 or R502 resister value

-If it is about 4.7KΩ, Change Main board

-If it is about 470Ω,

We don’t need to change Main board

3. Model : CJ65

Main PCB : ~ EAX67154403

ECO NO : EKNJ300169

Change Details : R500, R502 : 0RJ4701C678(4.7KΩ, 1005, 5%, 1/16W) → 0RJ4700C678(470Ω, 1005, 5%, 1/16W)

* It should support only the model that produced before 2019.3.29

Page 5

EAX Main PCB (The bottom surface)

Check the chip resister value

with Multi tester

Service Bulletin Product : Mini / Onebody / Louder

Bulletin # : PNZ201900013-01

Release Date : 2019.08.22

After checking R500 or R502 resister value

-If it is about 4.7KΩ, Change Main board

-If it is about 470Ω,

We don’t need to change Main board

4. Model : CK57,CK56

Main PCB : ~ EAX67862202

ECO NO : EKNJ300169

Change Details : R500, R502 : 0RJ4701C678(4.7KΩ, 1005, 5%, 1/16W) → 0RJ4700C678(470Ω, 1005, 5%, 1/16W)

* It should support only the model that produced before 2019.3.29

Page 6

EAX Main PCB (The bottom surface)

Check the chip resister value

with Multi tester

Service Bulletin Product : Mini / Onebody / Louder

Bulletin # : PNZ201900013-01

Release Date : 2019.08.22

After checking R500 or R502 resister value

-If it is about 4.7KΩ, Change Main board

-If it is about 470Ω,

We don’t need to change Main board

5. Model : CK43

Main PCB : ~ EAX67920102

ECO NO : EKNJ300169

Change Details : R500, R502 : 0RJ4701C678(4.7KΩ, 1005, 5%, 1/16W) → 0RJ4700C678(470Ω, 1005, 5%, 1/16W)

* It should support only the model that produced before 2019.3.29

Page 7

EAX Main PCB (The bottom surface)

Check the chip resister value

with Multi tester

Service Bulletin Product : Mini / Onebody / Louder

Bulletin # : PNZ201900013-01

Release Date : 2019.08.22

After checking R500 or R502 resister value

-If it is about 4.7KΩ, Change Main board

-If it is about 470Ω,

We don’t need to change Main board

6. Model : CK99

Main PCB : EAX67876301

ECO NO : EKNJ300169

Change Details : R523, R524 : 0RJ4701C678(4.7KΩ, 1005, 5%, 1/16W) → 0RJ4700C678(470Ω, 1005, 5%, 1/16W)

* It should support only the model that produced before 2019.3.29

Page 8

EAX Main PCB (The upper surface)

Check the chip resister value

with Multi tester

Service Bulletin Product : Mini / Onebody / Louder

Bulletin # : PNZ201900013-01

Release Date : 2019.08.22

After checking R523 or R524 resister value

-If it is about 4.7KΩ, Change Main board

-If it is about 470Ω,

We don’t need to change Main board

7. Model : OJ98

Main PCB : EAX67206701

ECO NO : EKNJ400042

Change Details : R5B3, R5A8 : 0RJ4701C678(4.7KΩ, 1005, 5%, 1/16W) → 0RJ4700C678(470Ω, 1005, 5%, 1/16W)

* It should support only the model that produced before 2019.4.8

Page 9

EAX67206701 Main PCB (The Bottom surface)

Check the chip resister value

with Multi tester

After checking R5B3 or R5A8 resister value

-If it is about 4.7KΩ, Change Main board

-If it is about 470Ω,

We don’t need to change Main board

Service Bulletin Product : Mini / Onebody / Louder

Bulletin # : PNZ201900013-01

Release Date : 2019.08.22

8. Model : OK99

Main PCB : EAX67882701

ECO NO : EKNJ400042

Change Details : R5B3, R5A8 : 0RJ4701C678(4.7KΩ, 1005, 5%, 1/16W) → 0RJ4700C678(470Ω, 1005, 5%, 1/16W)

* It should support only the model that produced before 2019.4.8

Page 10

EAX67882701 Main PCB (The Bottom surface)

Check the chip resister value

with Multi tester

After checking R5B3 or R5A8 resister value

-If it is about 4.7KΩ, Change Main board

-If it is about 470Ω,

We don’t need to change Main board

Service Bulletin Product : Mini / Onebody / Louder

Bulletin # : PNZ201900013-01

Release Date : 2019.08.22

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