RIDGID MS1290LZ Wiring Diagram, Motor, Trouble Shooting of Brake by Qualified Service Person Only

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Troubleshooting Guide (continued)

Motor

Problem		Probable Cause	Suggested Corrective Action


Brake does not stop	1.	Brushes not seated	1.	Inspect/clean/replace
blade within 6 sec-		or lightly sticking.		brushes. See “Maintenance”
onds.				section.
	2.	Motor brake winding	2.	Use only recommended
		overheated from		blades/accessories.
		use of prohibited		Let motor cool down.
		accessory or rapid
		on/off cycling.	3.	Retighten
	3.	Arbor screw loose.	3.	Retighten
	3.	Arbor screw loose.	4.	Get authorized service. See
	4.	Other	4.	Get authorized service. See
	4.	Other		“Troubleshooting of brake”
				“Troubleshooting of brake”
				section.

Motor does not	1.	Fuse.	1.	Check fuse, or circuit breaker.
start.	2.	Brushes worn.	2.	See “Maintenance” section.
	3.	Other.	3.	Get authorized service.

Brush sparking	1.	Normal automatic	1.	None
when switch		brake working prop-
released.		erly.

Wiring Diagram

		White Field		Red Brush
		Lead		Red Brush
Connector		Lead	Red	Lead
			Red	Lead
				Brush
				Brush
	White
				Armature
Cord w/Plug		Gray Brake	N.C.
		Lead		Brush
				Brush
		Black		White Brush
			N.O. Switch	Lead
			N.O. Switch

Trouble Shooting of Brake by Qualified Service Person Only

1.Check commutation at no load. If there is a heavy sparking which follows the curvature of the commutator: replace the armature.

2.To continue trouble shooting, now unplug the power cord.

3.Install service brushes, especially if delayed come-in of brake has been noticed before failure.

4.Check brake circuit for continuity: remove brush caps and brushes. Use ohmmeter to check continuity from brass brush holder to brush holder. If open, locate exact place using ohmme- ter. As indicated by test, tighten con- nection or replace field assembly or replace switch.

5.After repair, check direction of blade rotation vs. guard arrow.

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Contents Page Table of Contents Safety Instructions For Miter Saw Safety Signal Words Before Using The SawWhen Installing Or Moving The Miter Saw Safety Instructions for Miter SawsBefore Each Use Keep Guards In Place, in working Plan Ahead To Protect Your Eyes, Hands, Face and EarsTo Reduce the Risk of Accidental Dress For Safety Preparing to Make CutWhenever Saw Is Running Don’t Overreach. Keep good foot- ing and balanceGlossary of Terms for Woodworking Before Leaving The SawMotor Specifications and Electrical Requirements Extension Cord Wire Sizes Length Motor Safety ProtectionWire Sizes Polarized PlugUnpacking and Checking Contents Saw at a desired bevel angle Getting to Know Your Miter SawTop Carrying Handle Convenient way to transport saw Stop Screw Arbor AssemblyInstalling or Removing the Blade Fit 1/4 hex end of combination toolBe sure the arbor lock is released so the blade turns freely Four Basic Saw Controls Workpiece Clamp InstallationAssembling Dust Bag Bevel Lock Lever Bevel Index Pin Depth Adjustment Cam Knob Step One Repositioning Zero Clear- ance Blade Insert Alignment AdjustmentsStep Two Slide Tube Adjustment Loosen the top two gib screwsAdjust Miter Scale Indicator Step Three Blade Square to Fence Miter AlignmentStep Four Blade Square to Table Bevel Adjustment Adjust Bevel Scale IndicatorTo check, follow these steps Miter Lock Lever AdjustmentMiter Lock Lever Loosen the top locking jam nut Bevel Lock Lever AdjustmentBevel Pivot Movement/Adjustment Nut LockPortable Applications Mounting The Miter SawGrip of the plastic handle. Car Work Bench ApplicationsSafety Instructions for Basic Saw Operations Check Damaged Parts. Check forSafety Instructions for Basic Saw Operations con’t Reduce the Risk of AccidentalPreparing to Make the Cut Inspect Your Workpiece. Make sureMake workshop child-proof. Install Basic Saw Operations Chop Cutting Body and Hand PositionSliding Fence Miter CutBevel Cut Miter Scale UsageCutting Compound Miters on Picture Frames and Boxes Cutting Bowed MaterialCompound Cut Compound Cut BoxWork against the blade Completely set up your sawWorkpieces. Avoid binding Workpiece Clamp Usage Always perform dry runs. MakeWorkpiece Support Auxiliary FenceCut the two outside grooves Rough Cutting a DadoCutting Base Moldings Cut These Grooves With Saw Use a Chisel toTwo Methods of Cutting Crown Molding Cutting Crown MoldingsCutting Crown Molding Flat on the Miter Saw Table Cutting Crown Molding Angled to the Table and Fence Making a crown molding support jigWall Wall to Crown Molding Angle 45 degrees Mounting the Laser System Laser SystemCoverplate Stop Screw Arbor Blade Arbor Lock Supplied with Inner Blade Left Hand Thread Supplied withExactline Spindle Keep these items for use if Laser system is removedOperation Broken Red LineChanging Batteries Replace the back cover and secure with two Phillips screwsMaintenance Replacing Carbon Brushes Maintenance and LubricationLower Blade Guard Ball Bearings LubricationMotor Belt Tension Infrequent Lubrication as RequiredRecommended Accessories AccessoriesUsing Carbide Tipped Blades Prohibited AccessoriesProblem Probable Cause Suggested Corrective Action Troubleshooting GuideGeneral Trouble Shooting of Brake by Qualified Service Person Only Wiring DiagramMotor Page Repair Parts Always order by part number not by key number ‡ Caution See mechanical assembly caution onStandard Hardware Item May be purchased locally Base/Table Assembly Table Assembly Base Assembly Pivot Assembly Tube Pivot Assembly Pivot Sub Assembly Arm Guard Assembly ‡ Lower Guard Assembly ‡ Motor Assembly Page Catalog No. MS1290LZ Model No. MS1290LZ0Serial No RIDGID,INCPart No. SP6505 Form No. SP6505