3M SC 250/900m manual Light grey, Thin black line is visible Ideal clean fiber end face, Dark grey

5.9Before the network has a laser light source feeding your connector, inspect the fiber end face with 3M™ 200X View Scope 6365-VSif you have one. If the fiber end face looks acceptable per photos to the right, then re-insert the connector into the protrusion setter and activate the buffer clamp per step 4.8. If the connector needs rework, proceed to Section 6.0.

Caution reminder: Never look directly into the end of a fiber or connector when connected to a laser light source using the naked eye or a microscope.

Light grey

Thin black line is visible

Ideal clean fiber end face

Chips or cracks inside the 1/2 diameter circle are not allowed.

Acceptable chip	Unacceptable chip,	Unacceptable crack,
	needs rework		needs rework

Dirty, clean full	Alcohol on fiber, re-dry	Alcohol on ferrule,
diameter		re-dry

Dark grey

No line, just grey to white

Fiber is missing, go to step 6.1

Thread caught, re-	UPC only photo: forgot	Forgot to use lapping
clean with a twist	to spray water, needs	film, needs rework
	rework

Cleave nick mark

Rough

edge

Not polished, restart at step 5.1

16 78-0013-1746-6-E