LG CJ98 Reference manual

[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

9. Model : OM4560, OK45
Main PCB : EAX66565602
ECO NO : EKNJ400042
Change Details : R596, R597 : 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 11
EAX66565602 Main PCB (The bottom surface)
Check the chip resister value
with Multi tester
After checking R596 or R597 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

10. Model : OK55, OK75
Main PCB : EAX67851701
ECO NO : EKNJ400042
Change Details : R5B3, R5B39 : 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 12
EAX67851701 Main PCB (The Bottom surface)
Check the chip resister value
with Multi tester
After checking R5B3 or R5B39 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

Service Bulletin
2. Current and New (Visual / Part number & Name etc) Others assembly list
Page 13
Extended Warranty
This service is covered by an extended warranty Yes No
- If Yes, Parts for ( ) years and Labor for ( ) years by LG.
- If No, Parts and labor are charged to the customer if outside warranty period.
•The warranty period, including any extended warranty above, starts from the original date of purchase.

Part Interchangeable :
※ No part interchangeable due to SW
change
Scrap Current Part in LG Warehouse : Yes No
•The information is available through “https://gsfs-america.lge.com” with a valid ID.
•The information is intended tor experienced technicians, not for customer .
•The information is subject to change or update without notice.
Current Part New Part
Current Product - -
New Product - -

Product : Mini / Onebody / Louder
Bulletin # : PNZ201900013-01
Release Date : 2019.08.22
SVC
Location Description P/No. Visual
Before After Before After
A46 Main Assembly
*CJ98,CJ88,CJ87 EBR83763402 No change
(R505, R506 Change only) Option Code Assembly No change
A46 Main Assembly
*CJ45,CJ44 EBR83763302 No change
(R500, R502 Change only) Option Code Assembly No change
A46 Main Assembly
*CJ65 EBR83974202 No change (R500, R502 Change only) Option Code Assembly No change
A46 Main Assembly
*CK57,CK56 EBR85800903 No change
(R500, R502 Change only) Option Code Assembly No change
A46 Main Assembly
*CK43 EBR85800603 No change
(R500, R502 Change only) Option Code Assembly No change
A46 Main Assembly
*CK99 EBR85801002 No change
(R523, R524 Change only) Option Code Assembly No change
A46 Main Assembly
*OJ98 EBR83763603 No change
(R5B3, R5A8 Change only) Option Code Assembly No change
A46 Main Assembly
*OK99 EBR85801502 No change
(R5B3, R5A8 Change only) Option Code Assembly No change
A46 Main Assembly
*OM4560,OK45 EBR81659010 No change
(R596, R597 Change only) Option Code Assembly No change
A46 Main Assembly
*OK55,OK75 EBR85801202 No change
(R5B3, R5B39 Change only) Option Code Assembly No change
Others assembly
list

[Others][Disk Open/Close 오 동작 불량 개선을 위한 수정 메인보드 적용]메인보드 저항측정 및 교체
SVC 기술 정보지 제품 : Mini / Onebody
발행번호 # : PNZ201900013-01
발행일자 : 2019.08.22
적용 제번 : 모든 제번
1. 수리가이드
Page 14
적용모델 Mini 및Onebody 모델
- Mini*(CJ98,CJ88,CJ87,CJ65,CJ45,CJ44,CK99,CK57,CK56,CK43)
-Onebody *(OJ98, OK99, OM4560, OK45, OK55, OK75)
블루틴 타입 : SVC Notice Parts 기타 문제점 (증상) 수리시 적용 모든 수리
시 적용
증상 Disc Open 또는 Close 버튼 동작 시 동작 불
사진
원인
MCS DSP IC 적용모델의 Open 또는 Close 신호가 PCB 시료
별
임피던스에 영향을 받아 간헐적 Open/ Close 오류발생

해당 Issue는 관련 저항값을 측정하여 이상이 있을 경우 개선 Main Board로 교체하여 대응하는 서비스 건임
1) Main Board에 대한 측정 및 교체는 장기재고품 사용 및 향후 Field에서 입고 될 모든 보드에 적용함
2) 문제 증상이 발견될 경우 Main Board에 대한 품번 변경이 없어 저항측정 및 개선 Main Board로 교체
(개선 Main Board 정보: `19. 3. 27일, 3. 29일, 4. 8일 이후 생산 분)
- `19. 3. 27일 이후 : CJ98, CJ88, CJ87
- `19. 3. 29일 이후 : CJ45, CJ44, CJ65, CK57, CK56, CK43, CK99
- `19. 4. 8일 이후 : OJ98, OK99, OM4560, OK45, OK55, OK75
※ 모델별 SVC 방법 참조(다음 페이지)

*테스터기 이용 저항값 측정 사진
Page 15
SVC 기술 정보지 제품 : Mini / Onebody
발행번호 # : PNZ201900013-01
발행일자 : 2019.08.22
모델 별 양단 저항 측정값
-약 4.7KΩ 이면 Main Board 교체 작업 할 것
R505, R506 양단 저항 측정값
-약 470Ω 이면 Main Board 교체 작업 불필요
04.669kΩ → 약 4.7kΩ
0.4668kΩ → 약 470Ω

1. Model : CJ98,CJ88,CJ87
Main PCB : EAX67173201 Only
관련 ECO NO : EKNJ300150
변경내용 : R505, R506 : 0RJ4701C678(4.7KΩ, 1005, 5%, 1/16W) → 0RJ4700C678(470Ω, 1005, 5%, 1/16W) 변경
*단, 2019년 3월 27일 이전 생산분만 적용함.
Page 16
SVC 기술 정보지 제품 : Mini / Onebody
발행번호 # : PNZ201900013-01
발행일자 : 2019.08.22
EAX67173201 Main PCB (상면)
Chip 양단을 테스터기 이용
저항 값을 측정
R505 또는 R506 양단 저항 측정값
-약 4.7KΩ 이면 Main board 교체 작업 할 것
-약 470Ω 이면 Main board 교체 작업 불필요

2. Model : CJ45,CJ44
Main PCB : ~ EAX67136103
ECO NO : EKNJ300169
변경내용 : R500, R502 : 0RJ4701C678(4.7KΩ, 1005, 5%, 1/16W) → 0RJ4700C678(470Ω, 1005, 5%, 1/16W) 변경
*단, 2019년 3월 29일 이전 생산분만 적용함.
Page 17
SVC 기술 정보지 제품 : Mini / Onebody
발행번호 # : PNZ201900013-01
발행일자 : 2019.08.22
EAX Main PCB (하면)
Chip 양단을 테스터기 이용
저항 값을 측정
R500 또는 R502 양단 저항 측정값
-약 4.7KΩ 이면 Main board 교체 작업 할 것
-약 470Ω 이면 Main board 교체 작업 불필요

3. Model : CJ65
Main PCB : ~ EAX67154403
ECO NO : EKNJ300169
변경내용 : R500, R502 : 0RJ4701C678(4.7KΩ, 1005, 5%, 1/16W) → 0RJ4700C678(470Ω, 1005, 5%, 1/16W) 변경
*단, 2019년 3월 29일 이전 생산분만 적용함.
Page 18
SVC 기술 정보지 제품 : Mini / Onebody
발행번호 # : PNZ201900013-01
발행일자 : 2019.08.22
EAX Main PCB (하면)
Chip 양단을 테스터기 이용
저항 값을 측정
R500 또는 R502 양단 저항 측정값
-약 4.7KΩ 이면 Main board 교체 작업 할 것
-약 470Ω 이면 Main board 교체 작업 불필요

4. Model : CK57,CK56
Main PCB : ~ EAX67862202
ECO NO : EKNJ300169
변경내용 : R500, R502 : 0RJ4701C678(4.7KΩ, 1005, 5%, 1/16W) → 0RJ4700C678(470Ω, 1005, 5%, 1/16W) 변경
*단, 2019년 3월 29일 이전 생산분만 적용함.
Page 19
SVC 기술 정보지 제품 : Mini / Onebody
발행번호 # : PNZ201900013-01
발행일자 : 2019.08.22
EAX Main PCB (하면)
Chip 양단을 테스터기 이용
저항 값을 측정
R500 또는 R502 양단 저항 측정값
-약 4.7KΩ 이면 Main board 교체 작업 할 것
-약 470Ω 이면 Main board 교체 작업 불필요

5. Model : CK43
Main PCB : ~ EAX67920102
ECO NO : EKNJ300169
변경내용 : R500, R502 : 0RJ4701C678(4.7KΩ, 1005, 5%, 1/16W) → 0RJ4700C678(470Ω, 1005, 5%, 1/16W) 변경
*단, 2019년 3월 29일 이전 생산분만 적용함.
Page 20
SVC 기술 정보지 제품 : Mini / Onebody
발행번호 # : PNZ201900013-01
발행일자 : 2019.08.22
EAX Main PCB (하면)
Chip 양단을 테스터기 이용
저항 값을 측정
R500 또는 R502 양단 저항 측정값
-약 4.7KΩ 이면 Main board 교체 작업 할 것
-약 470Ω 이면 Main board 교체 작업 불필요