4M Change Control Guideline (RC017-029 Ver. B)
EIZO Corporation

4M Change Control Guideline

1 / 54M Change Control Guideline (RC017-029 Ver. B)
EIZO Corporation
Revision History
VersionRevision Date

Overview of Revised Contents

A

18

914

-Established.

B

1963

- Added: Cover and Revision History.
- Section 3: Added “If there is any change... regardless of the rank.”- Section 3: Added “(*) Please check all items... regardless of the rank.”- Appendix 1: Change rank of [Jig change] A -> B
- Appendix 1: Change rank of [Remodeling/modifying of jig] B -> C2 / 5

4M Change Control Guideline (RC017-029 Ver. B)
EIZO Corporation

1.

PurposeThis guideline indicates our requirement for 4M (Man, Method, Machine, Material) change control
to our suppliers.

2.

Scope of Application
4M changes occur at our suppliers. (Including the subcontractor.)

3.

4M Change Rank/Necessity of Notice
Please refer to the 4M change item/rank in [Appendix 1] and follow the table below. If there is any
change in delivery specification, the change notice is required regardless of the rank.

RankA

Category of Change

Changes with a seriousNecessity ofNecessity ofInvestigation of Effect (*)

Change Notice to EIZO

Required

Required

Required

Optional

effect on quality
B

Changes may have aneffect on quality(We may ask the submission ofthe investigation report of effect.)C

Changes occur on a

Required

Not Required

daily basis(*) Please check all items directly/indirectly related to the 4M change and conduct theinvestigation of its effect. In principle, any negative effect and degradation are not accepted.
Please be sure to assess the presence or absence of effect not only by judging anAccept/Reject criterion but also by checking the degradation. If there is any degradation, thechange notice is required regardless of the rank.

4.

Change Notice Procedure
Items to be notified

Free format. Please notify the information below:-Items to be changed.

-Effective date of change.

-

Investigation report of effect. (In principle, any negative effectand degradation are not accepted.)-

Regulations/Standards revised with the change.

-

Delivery date of changed item.

Deadline for submission

In principle, three months in advance of the effective date.

Place of submission

EIZO Procurement Dept.

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4M Change Control Guideline (RC017-029 Ver. B)
EIZO Corporation[Appendix 1] 4M Change Item/Rank

CategoryChange Item

Facility/Factory change/New factory

AGeneral

New production lineA

Partial expansion/layout change of production line

C

Subcontractor change

A

Operation procedure/method change with revision of QC process flow

AMethodRankchart
Operation procedure/method change without revision of QC process flow

BchartOperation condition change (e.g. Soldering condition change withArevision of QC process flow chart)
Automation <-> Manual operation

BDimension and tolerance specification change

AMachine/New production/inspection machine

AEquipment

Renewal/remodeling of production/inspection machine
Additional introduction of existing production/inspection machine

BControl item/criterion change of production/inspection machine withA

revision of QC process flow chart

MaterialMan

Maintenance/periodic inspection of production/inspection machine

CNew mold with new drawing

A

Renewal of mold/Making an additional mold with existing drawing

A

Remodeling/modifying of mold with the shape/dimension changeA

Maintenance of mold without the shape/dimension change

CJig change

B

Remodeling/modifying of jigC

Material change

A

Intended change of component content/contained amountANew material manufacturer

AWorker change

CChange of more than half of workers engaged in special process inB[Appendix 2]
Change of more than half of workers engaged in inspection
process/incoming inspection/outgoing inspection
4 / 5B

4M Change Control Guideline (RC017-029 Ver. B)
EIZO Corporation[Appendix 2] Special Process list

Category

Process

Chemical- Plating

Processing
Machine- Swaging

Processing- Hole drilling- Polishing- Shot peening- Laser processing

Welding- Spot welding- Electron beam welding- Flash welding

Soldering- Automatic/semi-automatic soldering- Manual soldering

Bonding- Metallic material- Composite material

Measurement- 3D measurement

Non-destructive- X-ray inspection

inspection- Magnetic inspection- Ultrasonic inspection

Surface treatment- Coating- Painting- Sputtering- Film forming of alloy

Heat treatment- Alloy coating- Nitriding- High frequency induction hardening

Others- Autoclave- Chemical milling- Other special process required to control the process in delivery specification

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