GE JVM1540 OTR Microwave

OTR Models:JVM1540DP1BBJVM1540DP1WWJVM1540DP1CCJVM1540DP1SS

IMPORTANT SAFETY NOTICEThe information in this presentation is intended for use by individuals possessing adequate backgrounds of electrical, electronic, & mechanical experience Any attempt to repair a major appliance maymechanical experience. Any attempt to repair a major appliance may result in personal injury & property damage. The manufacturer or seller cannot be responsible for the interpretation of this information, nor can it assume any liability in connection with its use.

WARNINGWARNINGTo avoid personal injury, disconnect power before servicing this product. If electrical power is required for diagnosis or test purposes, disconnect the power immediately after performing the necessary checks.the power immediately after performing the necessary checks.

RECONNECT ALL GROUNDING DEVICESIf grounding wires, screws, straps, clips, nuts, or washers used to complete a path to ground are removed for service, they must be returned to their original position & properly fastened.

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GE Factory Service Employees are required to use safety glasses with side hi ld t i t t (D ®) l & t l t h f ll ishields, cut resistant (Dyneema®) gloves & steel toe shoes for all repairs.

Plano Safety Glasses

Dyneema® Cut

Steel Toe Shoes

yResistant Glove

Prescription Safety Glasses

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Safety Glasses must be compliant with ANSI Z87.1-2003

Warranty

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Nomenclature

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Model/Serial Mini-Manual

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Grille Removal

To remove grille from OTR:g1. Remove three Phillips screws from the top, front of the cabinet.2. Slide grille to the left and remove.3. Reverse process to re-install grille.

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Control Panel Access / Removal

To remove / access control panel:1. Remove grille.2 R i l Philli i t l l t f

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2. Remove a single Phillips securing control panel to frame.

Control Panel Access / Removal

3 Grasp panel on both sides and lift straight up to disengage four3. Grasp panel on both sides and lift straight up to disengage fourtabs from panel frame.

4. Panel is supported by and will pivot on two extended bottom tabs.5 Continue to lift panel vertically to fully remove from frame

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5. Continue to lift panel vertically to fully remove from frame.

Control Board – Plug Locations

Key PanelRibbon

CN202

CN401

CN202

CN201

RY203

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Control Panel Assembly

Control panel assembly consists of a PCB, Key Panel / Escutcheonand metal support frame

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and metal support frame.

Key Panel TestIf necessary, the key panel pads can be verified by a continuity test.y yCheck continuity between the connectionsat the end of the ribbon. (Use high Ω scale).

Top of Ribbon

Pin #16

Pin #1

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Door Assembly

On the door assembly itself, there is a pin at the top and a i t th b tt f th dpin at the bottom of the door on

the hinge side.

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Door AssemblyThe door pins merely drop into p y pcircular openings on the chassis hinge arms.

To remove the door assembly:• Remove the grille. • Open door fully.

Lift d i f hi• Lift door pins from hinge arms and remove from cabinet.

The door assembly is serviceableThe door assembly is serviceable as an assembly or as individualparts.

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Fuse / Noise Filter Board

• Pull bottom of protective grille forward to release tabs securing it to frame.

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• Remove grille to access board.

Fuse / Noise Filter Board20 Amp Fuse

L1 & N InL1 & N In

L1 & N Out

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Cavity Light Replacement

After removing grille, press in on tab & lift light cover from frame.

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Cavity Light Replacement

• Unscrew bulb from socket & remove from light recess to replace.• Bulb is a 40w, screw-in type.

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Cavity Light Socket

If lamp socket would need replacement, remove wires from terminals,( ) & f

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press in on tab (arrow), twist socket slightly clockwise & pull from opening.

TCOs - Accessible from Front

Hood TCOCloses at 158°F

Bottom TCOOpens at 248°F

Closes at 158 FOpens at 104°F

The hood & bottom TCOs are accessible from the front after dropping

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the control panel. Bottom TCO is non-resettable.

Interlock AssemblyDoor Sensing Switch

Monitor Switch

• The switch housing is not adjustable.

Primary Interlock Switch

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g j• It is fixed on the front frame with two screws.

Night Light

Night light bulb is accessible from the bottom of the cabinet byNight light bulb is accessible from the bottom of the cabinet by removing a single screw and dropping light cover.

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Night Lights

• After removing cover, unscrew bulb to replace.• Bulb is 40w, screw-in type.

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Turntable Motor

• Turntable operation can be turned off & on at control panel.• To access turntable motor, first drop the bottom panel by removingsix screws.

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six screws.

Turntable Motor

Remove two wire harness from motor terminals.

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Turntable Motor

Remove single Phillips screw and twist motor slightly clockwiseto release motor from tab on frame.

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NOTE: Motor is a 21vac motor. (See schematic)

Turntable Motor

• Turntable coupler has a “D” shaped opening that slips over the turntable motor shaft.

• There is also a locking tab on the side that keeps it from slipping off.F f i t ll ti & l t h ld b d d i

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• For ease of installation & removal, motor should be unsecured during process.

Stirrer Blade & Cover

• Stirrer blade is air driven.• To access blade, first remove plastic pin by prying out.

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• Turn cover slightly clockwise to release tabs holding it to upper cavity.

Stirrer Blade & Cover

• Blade rotates on a plastic pin on the underside of the cover.

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Blade rotates on a plastic pin on the underside of the cover.• Both blade and cover can be ordered separately.

Stirrer Blade Air Flow

After passing by the magnetron the air from the cooling fan flows upwardAfter passing by the magnetron, the air from the cooling fan flows upwardthrough an opening in the upper frame, through a channel in the duct assembly and finally through holes in the backside of the ovencavity rotating the blade in a counter clockwise direction

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cavity rotating the blade in a counter clockwise direction.

Oven RemovalAll components mentions from this point requireremoving oven from it’s installation on the wall.

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HV Capacitor & Diode

• The High Voltage capacitor and diode are located on the right siderear of the cabinet. Th t t d b l d t l

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• They are separate components and can be replaced separately.

HV Capacitor & Diode

Th di d b di t d b i ( ) & i• The diode can be disconnected by removing screw (arrow) & removing connector from capacitor terminal.

• The capacitor can be released removing screw (arrow) and sliding outfrom under clamp

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from under clamp.

Magnetron

To replace magnetron, begin by removing two Phillips screws securing

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To replace magnetron, begin by removing two Phillips screws securingit to the metal frame.

Magnetron

• Next, remove wires from the magnetron terminal and from the terminalsof the magnetron TCO.

• Finally, pull magnetron to the left to disengage tabs from slots in the

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y, p g g gmetal frame.

Magnetron TCO

Mag TCOOpens at 302°FResets at 140°F

The mag TCO is secured to the case of the magnetron with twoll Philli

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small Phillips screws.

Wave Guide Cover

• The wave guide cover is made of a heavy plastic material.• It’s held in place with three tabs on the front side & four compressionpins (two on the rear side and one on the top & bottom).T i t it f i id th it d th i

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• Trying to remove it from inside the cavity may damage the pins.

Wave Guide Cover

• To remove, compress the four pins (arrows) with a pair of needlenose pliers.

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• Slide cover slightly towards the front to release tabs on front side.

Wave Guide Cover

View of the back side of the wave guide cover.

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Duct Assembly

• The plastic air duct assembly is mounted to the top of the chassis frame.p y p• It provides for the passage of air from the cooling & vent fans.• The duct assembly needs to be removed to access the cavity TCO. • Begin disassembly by removing the Phillips screw in front.

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Duct Assembly

Next, remove the Phillips screws located to the right of the cavity lamp.

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p g y p

Duct Assembly

• Remove final Phillips screw located on the duct’s right side, in frontof the HV capacitor.

• Lastly lift duct up at the rear and pull towards the back to release

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• Lastly, lift duct up at the rear and pull towards the back to releasethe tabs securing it to the front frame.

Cavity TCO

Cavity TCOOpens at 212°F

• The Cavity TCO is accessible after removing the duct assembly.• The Cavity TCO is non- resettable.

T lid th TCO t f d th i li

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• To remove, slide the TCO out from under the spring clips.

HV Transformer

To replace the high voltage transformer, begin by removing the primarywire connector (arrow) and the secondary wires from the mag & capacitor.

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HV Transformer

After dropping the cabinet bottom panel, remove the four large Phillips screws securing the transformer to the bottom frame.

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Magnetron Cooling Fan

• To access cooling fan motor & blade assembly:• First remove one screw securing front frame to support (circle).• Next remove three screws securing fan bracket to frame (circles).

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Next remove three screws securing fan bracket to frame (circles).• Remove wire harness from fan motor.

Magnetron Cooling Fan

• Remove primary wires from HV transformer.

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• Slide fan motor / blade bracket from main fram.

Magnetron Cooling Fan Blade

• Remove blade from shaft by pulling straight off.Di t f b k t b i t Philli

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• Disengage motor from bracket by removing two Phillips screws.

Vent Fan

Vent fan is accessible for redirection before installation by first removinga single screw on rear of cabinet

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a single screw on rear of cabinet.

Vent Fan

• Bend fan cover upward to access fan motor.• Remove second screw on rear cover to lift fan motor from cabinet.

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• See installation instruction for methods of directing exhaust air flow.

Vent Fan Plug

Cover is removed here for better view, but vent fan electrical plugcan be accessed with outer cover in place by lifting out fan motorand reaching in to disconnect or connect plug.

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Vent Fan Capacitor

• Outer cover needs to be removed to replace vent fan capacitor.• It is held in place with a single Phillips screw

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It is held in place with a single Phillips screw.

FAULT CODES

FAULT DISPLAYEDFAULT DISPLAYED“KEYPAD SHORTED --- SERVICE MAY BE NEEDED”

FAULT DETECTEDFAULT DETECTEDKey pad shorted for > 60 seconds

Any key pad shorted / closed for more than 60 seconds will generateAny key pad shorted / closed for more than 60 seconds will generatethis display along with a periodic 3 beep tone.

All control pads are deactivated and unit is inoperative.p p

If pad “un-shorts / opens, hitting the clear/off pad will resume operation of unit.

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Schematic

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Wiring Diagram

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END OF PRESENTATIONPRESENTATION

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