GE Spacemaker JVM1665 User Manual

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Page 1

GE Consumer & Industrial

Technical Service Guide

June 2009

GE Spacemaker®

Grilling

Over-the-Range

Microwave Oven

JVM1665

Auto

Manual

Grill

Combo

Grill

Combo

Grill

Combo

Grill

Time

Defrost

Soften

Cook

Power

Melt

Level

Add 30

Seconds

Start

Pause

Turn Table

Help

Options

Clear

Off

Vent

Light

Timer

Clock

31-9184

GE Appliances General Electric Company Louisville, Kentucky 40225

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IMPORTANT SAFETY NOTICE

The information in this service guide is intended for use by individuals possessing adequate backgrounds of electrical, electronic, and mechanical experience. Any attempt to repair a major ap pli ance may result in personal injury and property damage. The man u fac tur er or seller cannot be responsible for the in ter pre ta tion of this in for ma tion, nor can it assume any liability in connection with its use.

WARNING

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

RECONNECT ALL GROUNDING DEVICES

If 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 and properly fastened.

PRECAUTIONS TO BE OBSERVED BEFORE AND DURING SERVICING TO AVOID POSSIBLE EXPOSURE TO EXCESSIVE MICROWAVE ENERGY.

A. DO NOT OPERATE OR ALLOW THE OVEN TO BE OPERATED WITH THE DOOR OPEN.

B. IF THE OVEN OPERATES WITH THE DOOR OPEN, INSTRUCT THE USER NOT TO OPERATE THE OVEN

AND CONTACT THE MANUFACTURER IMMEDIATELY.

C. MAKE THE FOLLOWING SAFETY CHECKS ON ALL OVENS TO BE SERVICED BEFORE ACTIVATING

THE MAGNETRON OR OTHER MICROWAVE SOURCE, AND MAKE REPAIRS AS NECESSARY:

1. INTERLOCK OPERATION.

2. PROPER DOOR CLOSING.

3. SEAL AND SEALING SURFACES (ARCING, WEAR AND OTHER DAMAGE).

4. DAMAGE TO OR LOOSENING OF HINGES AND LATCHES.

5. EVIDENCE OF DROPPING OR ABUSE.

D. BEFORE TURNING ON MICROWAVE POWER FOR ANY TEST OR INSPECTION WITHIN THE

MICROWAVE GENERATING COMPARTMENTS, CHECK THE MAGNETRON, WAVE GUIDE OR TRANSMISSION LINE AND CAVITY FOR PROPER ALIGNMENT, INTEGRITY AND CONNECTIONS.

E. ANY DEFECTIVE OR MISADJUSTED COMPONENTS IN THE INTERLOCK MONITOR, DOOR SEAL AND

MICROWAVE GENERATION AND TRANSMISSION SYSTEMS SHALL BE REPAIRED, REPLACED OR ADJUSTED BY PROCEDURE DESCRIBED IN THIS MANUAL BEFORE THE OVEN IS RELEASED TO THE OWNER.

F. A MICROWAVE LEAKAGE CHECK TO VERIFY COMPLIANCE WITH THE FEDERAL PERFORMANCE

STANDARD SHOULD BE PERFORMED ON EACH OVEN PRIOR TO RELEASE TO THE OWNER.

GE Consumer & Industrial

Technical Service Guide

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Page 3

Table of Contents

12-Volt Light Transformer.............................................................................................................................................23

Bottom Thermal Cutout (TCO) .....................................................................................................................................17

Capacitor and Diode .......................................................................................................................................................22

Component Locator Views ...........................................................................................................................................10

Components ........................................................................................................................................................................14

Control Boards and Panel Connections .................................................................................................................13

Control Features ...............................................................................................................................................................6

Control Operation Test ...................................................................................................................................................29

Control Panel Assembly .................................................................................................................................................16

Cooling Fan and Motor ...................................................................................................................................................21

Diagnostics and Service Information ......................................................................................................................27

Door Assembly ...................................................................................................................................................................25

Door/Cavity Distance Test ............................................................................................................................................29

Door Interlock Switches ................................................................................................................................................. 24

Griller Element ....................................................................................................................................................................17

Heater Thermal Cutout (TCO) ......................................................................................................................................18

High Voltage Transformer ............................................................................................................................................22

Hood Thermostat ..............................................................................................................................................................18

Humidity Sensor ................................................................................................................................................................20

Interior Light ........................................................................................................................................................................ 15

Interlocks (Door Latch Switches)................................................................................................................................30

Introduction .........................................................................................................................................................................5

Key Panel Test .................................................................................................................................................................... 31

Line Fuse ...............................................................................................................................................................................19

Magnetron............................................................................................................................................................................20

Magnetron Thermal Cutout (TCO) ..............................................................................................................................18

Microwave Leak Test .......................................................................................................................................................29

Noise Filter ........................................................................................................................................................................... 19

Nomenclature ....................................................................................................................................................................4

Outer Cover .........................................................................................................................................................................14

Oven Removal ....................................................................................................................................................................14

Oven Thermal Cutout (TCO) .......................................................................................................................................... 18

Performance Test ............................................................................................................................................................. 29

Schematics and Wiring Diagrams ............................................................................................................................32

Smart Board ........................................................................................................................................................................16

Stirrer Assembly ................................................................................................................................................................19

Surface Lamp Assemblies ............................................................................................................................................26

Surface Lamps ...................................................................................................................................................................26

Turntable Motor ................................................................................................................................................................. 25

Vent Blower ......................................................................................................................................................................... 15

Vent Fan Motor Capacitor.............................................................................................................................................21

Warranty .............................................................................................................................................................................. 34

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Model Number

Nomenclature

J V M 1 6 6 5 D 1 N B B

Product

J = GE Cooking Product

Microwave Oven

V = Over-the-Range Model

Installation

M = Microwave

Cavity Size (cu. ft.)

16 = 1.6 cu. ft.

Nomenclature

The nomenclature plate is lo cat ed inside the microwave on the left side.

The mini-manual is located behind the control panel on the right side of the oven.

Product Color

BB = Black WW = White SS = Stainless Steel

Model Year Designator

Feature Pack

Designates Features - the higher the number, the more features.

Serial Number

The ﬁ rst two numbers of the serial number identify the month and year of manufacture.

Example: AS123456S = January, 2009

A - JAN 2009 - S

D - FEB 2008 - R F - MAR 2007 - M G - APR 2006 - L H - MAY 2005 - H L - JUN 2004 - G M - JUL 2003 - F R - AUG 2002 - D S - SEP 2001 - A T - OCT 2000 - Z V - NOV 1999 - V

Z - DEC 1998 - T

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Introduction

The new Griller Microwave Oven is a versatile appliance for any kitchen. The Easy-Set Control Dial menu system automatically leads you through each step of the cooking process.

Features and Beneﬁ ts:

Grilling - The oven features 1,200-watt grilling power that generates radiant heat to brown the exterior of

food.

Auto Grill/Manual Grill - The oven offers the option of using automatic or manual grilling. Automatic grilling

allows you to select the correct food type from a pre-programmed menu. Manual grilling allows you to specify the amount of time you wish to grill.

Sensor Cook - Microwave oven automatically adjusts the cooking time to various types and amounts of

food.

Easy-Set Control Dial - You can make selections on the oven by turning the dial and pressing it. Control Lock-Out - Locks the control panel to prevent the oven from being accidently started.

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Control Features

Dial Selector

Cooking Controls

Microwave Cooking Time and Auto Features

Press Turn and push dial to enter

Time Cook Amount of cooking time Press once to microwave any time between 15 seconds and 95 minutes.

Add 30 Seconds Starts immediately! Defrost

Press once (Fast) Food weight up to one pound Press twice (Auto) Food weight up to six pounds Press three times (Time) Amount of defrosting time

Beverage (6–12 oz.) Starts immediately! Power Level Power level 1–10

Sensor Features

Press Turn and push dial to enter Option

Popcorn Starts immediately! more/less time Potato Starts immediately! more/less time Soften/Melt

Press once (soften) Food type Press twice (melt) Food type

Auto Cook Food type more/less time

Grilling Features

Press Turn and push dial to enter

Auto Grill Food type/Specific food Manual Grill Desired cook time Combo Grill Food type/Specific food

(Continued Next Page)

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Available Cooking Options

Microwave Cooking

The oven uses microwave energy to cook by a set time or weight, or automatically by sensor.

Sensor microwave works by detecting the increasing humidity released during cooking. The oven automatically adjusts the cooking time to various types and amounts of food.

Cooking Method

Microwave energy is distributed evenly throughout the oven for thorough, fast

Heat Source

Microwave energy.

Heat Conduction

Heat produced within food by instant energy penetration.

Beneﬁ ts

Fast, high efﬁ ciency cooking. Oven and surroundings do not get hot. Easy clean-up.

cooking of food.

_________________________________________________________________________________________

Auto Grill/Manual Grill

During grilling, a heating element is used to generate radiant heat to brown the exterior of the food. The oven offers the option of using automatic or manual grilling. Automatic grilling allows you to select the correct food type from a pre-programmed menu. Manual grilling allows you to specify the amount of time you wish to grill.

Always use the grilling shelf when using Auto Grill or Manual Grill unless the item you are cooking is too large.

Cooking Method

Hot air radiates around food to produce a browned exterior.

Heat Source

Radiating heated air.

Heat Conduction

Heat conducted from outside of food to inside.

Beneﬁ ts

Aids in browning and enhances ﬂ avor.

_________________________________________________________________________________________

For best results, use the grilling shelf when using Combo Grill unless the item you are cooking is too large.

Combination Grill

The oven also offers the option of using Combination Grill. This feature allows for faster grilling by combining grilling and microwave energy.

Cooking Method

Microwave energy and radiating heated air combine to grill foods faster.

Heat Source

Microwave energy and radiating heated air.

Heat Conduction

Food heats from instant microwave energy penetration and from heat conducted from

Beneﬁ ts

Shortened grilling time from microwave energy, plus browning and ﬂ avor enhancement.

outside.

(Continued next page)

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Auto Grill

Place grill tray and rack on the turntable. Place the food on the tray 1. and close the door.

Press the 2. AUTO GRILL button.

Turn and press the dial to select the FOOD TYPE (Beef/Pork/Poultry/3. Seafood).

When the FOOD TYPE has been selected, turn the dial to select the 4. speciﬁ c food.

When the food selection has been entered, USE GRILL TRAY AND 5. RACK will be displayed to remind you that you must use these when cooking with Auto Grill.

Press the 6. START/PAUSE button and the grill time will be displayed.

If the food must be turned during cooking, a signal will sound once 7. and TURN FOOD will be displayed until the dial or button is pressed, or the door is opened. When the door is open, PAUSE and the remaining grill time will be displayed.

Press the dial or the 8. START/PAUSE button. Cooking will resume and

the time countdown will be displayed.

Note: You may change the cook time at any time during cooking by

turning the dial.

_________________________________________________________________________________________

Manual Grill

Placing the grill tray and rack on the turntable is optional. Place food 1. on the tray and close the door.

Press the 2. MANUAL GRILL button.

Turn and press the dial to enter the desired grill time.3.

Press the 4. START/PAUSE.

If the door is opened, PAUSE and the remaining grill time will be 5. displayed.

Press the dial or the 6. START/PAUSE button. Cooking will resume and

the time countdown will be displayed.

(Continued next page)

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Combo Grill

Placing the grill tray and rack on the turntable is optional. Place food 1. on the tray and close the door.

Press the 2. COMBO GRILL button.

Turn and press the dial to enter the FOOD TYPE and grill time. 3. The cooking combination COMBO 1 or COMBO 2 is automatically determined by the food selection.

When the food type is selected, the preset time will be displayed. You 4. can rotate the dial to adjust the cooking time as desired.

Press the 5. START/PAUSE button.

If the food must be turned during cooking, a signal will sound once 6. and TURN FOOD will be displayed until the dial or button is pressed, or the door is opened. When the door is open, PAUSE and the remaining grill time will be displayed.

Press the dial or the 7. START/PAUSE button. Cooking will resume and

the time countdown will be displayed.

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Front View

Component Locator Views

Grill Assembly

Control Panel Assembly

Turntable Shaft

Front View - Control Panel Assembly Removed

Noise Filter

High Voltage Capacitor

Fuse

Magnetron

Magnetron TCO

High Voltage Transformer

Bottom TCO

Hood Thermostat

(Continued Next Page)

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Top View

Vent Blower

Griller Element

Vent Fan Motor Capacitor

Cooling Fan

Heater TCO

Oven TCO

Bottom View

Humidity Sensor

12-Volt Light Transformer

Interior Light Assembly

Turntable Motor

(Continued Next Page)

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Page 12

Right Side View

Cooling Fan Motor

Cooling Fan

Fuse

Magnetron

Left Side View

High Voltage Transformer

Hood Thermostat

Vent Blower

Griller Element

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Smart Board

Low Voltage Transformer

Control Boards and Panel Connections

CN1 CN2

RY11

CN6

RY2

(Back Side)

CN1 - Oven Lamp, Fan Motor, Heater Relay (RY11), Primary Interlock Switch (Top), Vent Motor, LVT

CN2 - Vent Motor, Cooktop Lamp, Turntable Motor

CN3 -Door Sensing Switch (Bottom), Hood Thermostat

CN3

CN6 - Humidity Sensor

RY2 - Secondary Interlock Relay

RY11 - Heater Relay

(Front Side)

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Components

Oven Removal

The oven is hooked on metal tabs at the bottom of the wall mounting plate and fastened to the cabinet with 3 top cabinet bolts.

To remove the oven from the cabinet or wall opening:

WARNING: This oven requires 2 people for complete

oven removal.

Disconnect power to the oven.1.

For top-vented models, disconnect the duct and 2. remove the damper assembly.

Remove the 3 top cabinet bolts.3.

Caution: When removing the oven, be sure to

provide adequate support to prevent dropping the unit.

Pull the unit forward slowly.4.

3. Remove 8 Phillips-head screws from the top of the oven.

Bracket

4. Remove 3 Phillips-head screws from the back of the oven.

Outer Cover

To gain access to many of the oven components, it is necessary to remove the outer cover.

To remove the outer cover:

Remove the oven. (See 1.

Remove 1 Phillips-head screw from the bracket 2. that holds the power cord in place. Remove the bracket.

Oven Removal.)

View From Rear

5. Remove 8 Phillips-head screws from the bottom of the oven.

6. Slide the outer cover to the rear of the oven and remove.

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Vent Blower

The three-speed vent blower can be directed upward, to the rear, or re-circulated into kitchen after installing the charcoal ﬁ lter kit (part numberWB02X10943).

The vent blower is located on the top rear of the microwave oven. See installation instructions for the proper method of directing the vent fan prior to installing unit.

To remove the vent blower:

Remove the oven. (See 1. Oven Removal.)

Remove 3 Phillips-head screws on the top of 2. the oven that hold the exhaust adapter in place, then slide the exhaust adapter to the rear and remove.

4. Lift out the vent blower and place it on top of the oven. Disconnect the electrical connector to the vent blower.

Electrical Connector

View From Rear

Disconnect

3. Remove the Phillips-head screw on the back of the oven holding the vent blower in place.

View From Rear

Interior Light

The interior light bulb is 12 VAC, 20 watt (part number WB36X10176).

To remove the interior light:

Remove 2 Phillips-head screws from the top of 1. the oven that attach the grill assembly to the oven and remove the grill.

Grill Assembly

2. Remove the Phillips-head screw that attaches the interior light assembly to the top of the microwave oven.

(Continued next page)

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Page 16

3. Lift the light assembly up to expose the interior light bulb.

4. Pull gently to remove the bulb.

Bulb

Control Panel Assembly

The control panel assembly consists of a smart board, metal frame, touch pad/escutcheon, and a knob. (4 parts)

To remove the control panel assembly:

Smart Board

To remove the smart board:

Remove the control panel assembly. (See 1. Control

Panel Assembly.)

Pull the knob straight out and off of the control 2. board.

Knob

3. Disconnect the touch panel ribbon from the smart board.

Disconnect power to the microwave oven.1.

Remove 2 Phillips-head screws from the top of 2. the microwave that attach the grill assembly to the oven and remove the vent.

Grill Assembly

3. Remove the Phillips-head screw that attaches the control panel to the oven and pull the control panel up and out to remove.

4. Remove 8 Phillips-head screws that attach the smart board to the control board frame and lift the smart board off the frame.

Disconnect

4. Mark and disconnect all the wiring harnesses to the smart board.

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Griller Element

The griller element is located on the top, left side of the oven, inside the oven cavity. The griller element operates on 120 VAC, is rated at 1200 watts, and draws 10 amps.

To check continuity of heater element, place meter leads:

L1 in at the fuse board (black wire).

4. Remove two 9/32-in. hex nuts from the griller element.

View From Left Side

Yellow wire to the heater relay on the control board.

Resistance should be approximately 11.5Ω.

Note: Door needs to be closed to perform check. To remove the griller element:

Remove the outer cover. (See 1. Outer Cover.)

Disconnect wiring to the griller element.2.

View From Left Side

Disconnect

3. Using a small ﬂ at blade screwdriver, pry up the four tabs that attach the griller element cover to the oven.

5. Open the oven door, and remove 2 Phillips-head screws that attach the griller element to the top of the oven and remove the element.

Bottom Thermal Cutout (TCO)

The bottom TCO is located on the bottom, right side of the oven behind the control panel. The bottom TCO is not resettable.

The bottom TCO has a temperature rating of 302°F.

To remove the bottom TCO:

Tab

– 17 –

Remove the control panel assembly. (See 1. Control

Panel Assembly.)

Disconnect wiring to the bottom TCO.2.

Remove the Phillips-head screw attaching 3. the bottom TCO to the oven and pull the TCO forward to remove.

Disconnect

Page 18

Magnetron Thermal Cutout (TCO)

Hood Thermostat

The magnetron TCO is located on the magnetron and opens when the magnetron temperature reaches 302°F.

The magnetron TCO is a normally closed switch. An open reading across the TCO indicates a failed TCO. The magnetron TCO is not resettable.

To remove the magnetron TCO:

Remove the control panel assembly. (See 1. Control

Panel Assembly.)

Disconnect the wiring to the magnetron TCO.2.

Remove the Phillips-head screw and the 3. magnetron TCO from the magnetron.

Disconnect

The hood thermostat is a single pole thermostat mounted on the base plate. The contacts close at approximately 133°F. These contacts, when closed, energize the vent fan.

To remove the hood thermostat:

Remove the control panel assembly. (See 1. Control

Panel Assembly.)

Disconnect wiring to the hood thermostat.2.

Remove the Phillips-head screw attaching 3. the hood thermostat to the oven and pull the thermostat forward to remove.

Disconnect

Heater Thermal Cutout (TCO)

The heater TCO is located on the top side of the oven cavity. The heater TCO is not resettable.

The heater TCO has a temperature rating of 302°F.

To remove the heater TCO:

Remove the outer cover. (See 1. Outer Cover.)

Disconnect wiring to the heater TCO.2.

Remove 2 Phillips-head screws attaching the 3. heater TCO to the oven and lift the TCO to remove.

Oven Thermal Cutout (TCO)

The oven TCO is located on the top side of the oven cavity beside the exhaust duct. The oven TCO is not resettable.

The oven TCO has a temperature rating of 293°F.

To remove the oven TCO:

Remove the outer cover. (See 1. Outer Cover.)

Disconnect wiring to the oven TCO.2.

Remove 2 Phillips-head screws attaching the 3. oven TCO to the oven and lift the TCO to remove.

Disconnect

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Stirrer Assembly

The stirrer assembly consists of a blade, pin, and cover. The blade is air driven and rotates on a shaft embedded in the stirrer cover. The stirrer assembly is located at the top of the oven cavity.

Check to make sure the fuse is not open. Check the noise ﬁ lter for approximate resistance value at the following locations:

White (neutral input) to white (neutral output) - 0 Ω.

Black (line input) to black (line output) - 0 Ω.

To remove the stirrer:

Disconnect power to the microwave oven and 1. open the door.

Remove 2 Phillips-head screws from the stirrer 2. cover.

Rotate the stirrer cover forward and remove the 3. stirrer cover.

Noise Filter

White (neutral input) to black (line input) - 23 Ω.

Line Fuse

Note: When the 20-amp fuse is blown due to

operation of the monitor switch, the monitor switch must be replaced. Also replace the relays and/or the interlock switches when the continuity check shows the contacts are shorted.

The unit is equipped with a 20-amp fuse (part number WB27X10928).

The fuse is located in a receptacle near the top of the noise ﬁ lter and is common to all functions and door switches.

To remove the fuse:

Remove the control panel assembly. (See 1. Control

Panel Assembly.)

The noise ﬁ lter helps to suppress electromagnetic interference (EMI) radiating from the operation of the oven and also protects the oven from any line noise. The noise ﬁ lter is located on the right side of the oven behind the control panel. The noise ﬁ lter is held in place by two Phillips-head screws. The ﬁ lter assembly board can be accessed by removing the control panel. The outer cover does not need to be removed.

Note: When installing the noise ﬁ lter, ensure all ﬁ lter

wiring is connected to the correct terminals.

Screw

Noise Filter

Remove the fuse.2.

Fuse

Screw

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Page 20

Humidity Sensor

Magnetron

The humidity sensor detects humidity changes during sensor cook functions and transmits this information to the smart board.

WARNING: Prior to servicing the magnetron, be

certain the capacitor is discharged. Manually discharge by placing an insulated-handle screwdriver between the diode connection of the capacitor and the oven chassis ground.

To check continuity of cooling fan, place meter leads:

L1 in at the fuse board (black wire).

Pink wire to pin #7 of CN1 on the control board.

Resistance should be approximately 43Ω.

Note: Door needs to be closed to perform check. To remove the magnetron:

Remove the control panel assembly. (See 1. Control

Panel Assembly.)

Disconnect wiring to the magnetron.2.

Using a 1/4-in. drive socket wrench, short 3. extension, 1/4-in. socket, and a #2 Phillips bit, remove the 3 Phillips-head screws that attach the magnetron to the oven.

To remove the humidity sensor:

Remove the outer cover. (See 1. Outer Cover.)

Disconnect the humidity sensor wire connector 2. from the control board. (See Control Boards and

Panel Connectors.)

Remove the Phillips-head screw attaching the 3. humidity sensor to the duct assembly.

Remove the Phillips-head screw that attaches 4. the ground wire to the microwave and lift the humidity sensor to remove.

Disconnect

View From Right Side

(Continued next page)

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4. Remove the magnetron through the control panel opening.

Vent Fan Motor Capacitor

The vent fan motor capacitor is located on the top of the oven above the cooling fan.

The motor capacitor is rated at 10 μF.

Cooling Fan and Motor

The cooling fan and motor are located on the right side of the microwave oven.

To remove the cooling fan and motor:

Remove the control panel assembly. (See 1. Control

Panel Assembly.)

Remove the magnetron. (See 2. Magnetron.)

Using pliers, remove the fan retainer from the 3. fan motor shaft.

To remove the vent fan motor capacitor:

Remove the outer cover. (See 1. Outer Cover.)

Disconnect wiring to the motor condenser.2.

Remove the Phillips-head screw that attaches 3. the motor capacitor to the oven.

Disconnect

Fan Retainer

4. Carefully pull the fan off of the fan motor shaft.

5. Remove 3 Phillips-head screws that attach the fan motor to the duct assembly.

6. Disconnect wiring to the fan motor.

7. Remove the fan motor through the control panel opening.

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Capacitor and Diode

High Voltage Transformer

The capacitor has an internal shunt resistor to automatically discharge the capacitor when the oven turns "off". Under normal operation, the capacitor should fully discharge within 30 seconds.

WARNING: Always be certain the capacitor is

discharged before servicing. Mechanically discharge the capacitor by placing an insulated-handle screwdriver between the diode connection of the capacitor and the oven chassis ground.

Note: Use the screw head close to the capacitor to

ensure ground metal contact.

To remove the capacitor and diode:

Remove the control panel assembly. (See 1. Control

Panel Assembly.)

Disconnect wiring to the high voltage capacitor.2.

Remove the 2 Phillips-head screws that attach 3. the capacitor and diode to the oven and remove the high voltage capacitor.

The high voltage transformer is located on the right side of the microwave oven, beneath the magnetron.

WARNING: Prior to servicing the transformer, be

certain the capacitor is discharged. Manually discharge by placing an insulated-handle screwdriver between the diode connection of the capacitor and the oven chassis ground.

To remove the high voltage transformer:

Remove the control panel assembly. (See 1. Control

Panel Assembly.)

Disconnect wiring to the high voltage 2. transformer.

Disconnect wiring to the magnetron thermostat.3.

Disconnect

Disconnect the diode from the high voltage 4. capacitor.

Disconnect

View From Right Side

4. Remove 8 Phillips-head screws from the bottom of the microwave oven cabinet.

Diode

(Continued next page)

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Page 23

5. Disconnect the wiring harnesses to the turntable motor and the cooktop lamp.

Disconnect

12-Volt Light Transformer

The 12-volt light transformer is located on the right side of the microwave oven, above the magnetron.

To remove the transformer:

Remove the outer cover. (See 1. Outer Cover.)

Disconnect the transformer wiring harness.2.

6. Remove 4 Phillips-head screws that attach the high voltage transformer to the bottom plate.

7. Remove the high voltage transformer through the control panel opening.

Disconnect

View From Right Side

3. Remove the 2 Phillips-head screws that attach the low voltage transformer to the microwave oven and lift the transformer to remove.

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Door Interlock Switches

The door has 3 interlock switches. All switches are removed the same way.

3. Remove the 2 Phillips-head screws that attach the door switch bracket to the microwave oven frame and remove the door switch bracket.

Door Sensing and Primary Interlock Switches

The power relay is mounted on the smart board. The primary interlock and door sensing switches are activated by the latch heads on the door. When the door is opened, the switches interrupt the circuit to all components, except the oven lamp and the control panel display. A cook cycle cannot take place until the door is ﬁ rmly closed, thereby activating both interlock switches. The primary interlock system consists of the door sensing switch, the primary interlock switch, and the power relay.

Monitor Switch

The monitor switch is operated indirectly by the bottom latch pawl. The pawl operates a cam switch, which in turn, activates the monitor switch. The switch is intended to render the oven inoperative by means of blowing the monitor fuse when the contacts of the primary interlock switch and power relay fail to open when the door is opened.

Functions

Primary

Disconnect

Monitor

Disconnect

Door Sensing

4. Using a small ﬂ at blade screwdriver, release the tabs and remove the door interlock switch from the door switch bracket.

When the door is opened, the monitor switch is closed. At this time, the primary interlock switch and the power relay are open.

As the door goes to a closed position, the monitor switch is ﬁ rst open and then the door sensing switch and the primary interlock switch contacts close.

To remove the door interlock switches:

Remove the outer cover. (See 1.

Outer Cover.)

Disconnect wiring to the door switches.2.

Tab

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Turntable Motor

Door Assembly

The turntable motor is located on the bottom of the microwave oven.

To remove the turntable motor:

Remove 8 Phillips-head screws from the bottom 1. of the microwave oven cabinet.

2. Disconnect the wiring harness to the turntable motor.

3. Remove the 2 Phillips-head screws attaching the turntable motor to the microwave oven and remove the turntable motor.

The door is available as a complete assembly or as individual parts.

A microwave leakage test must be performed any time a door is removed, replaced, disassembled, or adjusted for any reason. The maximum leakage is 4

MW/CM

. (See Microwave Leakage Test.)

To remove the door, ﬁ rst remove the grill assembly. Lift the door up and disengage from the hinge pins.

Disconnect

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Page 26

Surface Lamp Assemblies

Surface Lamps

The surface lamp assemblies are located on the bottom of the microwave oven.

To remove the surface lamp assemblies:

Remove the Phillips-head screw from the 1. surface lens panel on the bottom of the microwave oven cabinet and open the panel.

2. Remove 2 Phillips-head screws (1 on each side) from the lamp socket.

The surface lamp is a 12VAC, 10 watt lamp (part number WB36X10177).

To remove the surface lamps:

Remove the Phillips-head screw from the 1. surface lens panel on the bottom of the microwave oven cabinet and open the panel.

2. Carefully pull the halogen bulb out of the socket.

3. Lift the lamp assembly up and out of the oven.

Bulb

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Page 27

Diagnostics and Service Information

CAUTION:

•

DOOR S/W

CHECK

XFMR VOL

VE PRECAUTIONS

PROGRAM TIME

Diagnosis Flow Chart

Y N

COOK

MW PWR

"ON"

OPEN DOOR IS OVEN

LIGHT "ON"?

CLOSE DOOR

• RUN CONTROL PERFORMANCE TEST (SEE TEST)

• DOES IT PASS?

LARGE WA TER LOAD

& NEON IN OVEN

30 MIN DOES OVEN

START WITHOUT

TOUCHED "STAR T"?

• ONLY LIGHT &

FAN ON

• NO MW PWR

REPL SMART

BOARD

LIGHT FAN

• SMART BOARD KEY PANEL

CHECK

• LIGHT

•

• WIRING

TOUCH STAR T

OPEN LIGHT & BLOWER "ON" AND STAYS "ON"?

MW PWR "ON"? (NEON LIGHT)

• CHANGE

• NEON CYCLE?

• CLEAR OFF & PROGRAM 30 SEC START & TIME OUT

• DOES IT TURN "OFF"?

AND MAIN RELAY

O PWR 5

DISPLAY LIT

• CANNOT SET CLOCK

• NO OR ONLY SOME PADS WORK

• DISPLAY NOT WHAT ENTERED

• ERRATIC DISPLAY

• NO BEEP DISPLAY GOES BLANK, FF, RESET

•

• CANNOT CLEAR DISPLAY

• VERIFY XFMR VOLTS

OK?

• SMART BOARD

• KEY PANEL

PERFORM KEY PANEL TEST

N REPL

XFMR

• 120V SUPPLY

• 20A FUSE

• (IF BLOWN CHECK VARISTOR)

• MAGN TCO & OVEN CUTOUT.

• CONTROL ALL OK?

• XFMR PLUGS OR

• SMART BOARD

REPAIR

CAUTION

OBSER

FOR HANDLING

ELECTROSTATIC

SENSITIVE DEVICES

• WITH OVEN RUNNING

CHECK NEON CYCLE

REPLACE SMART

BOARD

OVEN LIGHT & BLOWER

STILL ON

• OPEN & CLOSE DOOR

• LIGHT & BLOWER

STILL ON

CHECK POWER

CONTROL RELA Y

TURNED ON

SMART BOARD

OR HV SECT

CHK WINDINGS

NO OVEN LIGHT

NO BLOWER

WITH START PAD

TOUCHED CHECK

LIGHT/BLOWER 5-12

VDC PLUG

AT PLUG

INTERLOCKS DOOR

SWITCH CONTROL

XFMR KEY PANEL OR

SMART BOARD

LIGHT & BLOWER ON

ONLY WHEN START

PAD TOUCHED

REPLACE SMART

BOARD

TOUCH "OFF" PADS TURN "OFF"?

NORMAL KEY PANEL

VENT FAN OR LIGHT "ON" ONLY

WHEN PAD TOUCHED

REPLACE SMART

SMART BOARD

BOARD

SMART BOARD

TOUCH FAN & LIGHT PADS

VENT FAN & LIGHT "ON"

AND STAYS "ON"?

ONLY FAN

LIGHT WORKS

CHECK SMART BOARD 16PIN PLUG

• VENT FAN AT 5-12

• SURFACE LIGHT AT 6-12

• PLUGS

• WIRING

• LAMPS

• FAN OR

• SMART BOARD

• SMART BOARD OR

• KEY PANEL

NO LIGHT

CHECK

• 120V SUPPLY

• IF 20A FUSE BLOWN, CHECK VARISTOR.

• MAGN TCO ALL OK?

• XFMR

• PLUGS OR

• SMART BOARD

NO FAN

REPAIR

(Continued next page)

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Page 28

Problem Possible Causes What To Do

Oven will not start A fuse in your home may be • Replace fuse or reset circuit breaker.

blown or the circuit breaker tripped.

Power surge. • Unplug the microwave oven, then plug it back in.

Plug not fully inserted into wall • Make sure the 3-prong plug on the oven is fully inserted outlet. into wall outlet.

Door not securely closed. • Open the door and close securely.

Control panel lighted, Door not securely closed. • Open the door and close securely. yet oven will not start

Start/Pause button not pressed • Press Start/Pause.

after entering cooking selection.

Another selection entered • Press Clear/Off. already in oven and Clear/Off button not pressed to cancel it.

Cooking time not entered after • Make sure you have entered cooking time after pressing pressing Time Cook. Time Cook.

Clear/Off was pressed • Reset cooking program and press Start/Pause. accidentally.

Food weight not entered after • Make sure you have entered food weight after selecting selecting Auto Defrost. Auto Defrost.

Food type not entered after • Make sure you have entered a food type. pressing Auto Cook.

CONTROL LOCKED The control has been locked. • Press and hold Clear/Off for about 3 seconds appears on display to unlock the control.

Floor of the oven The cooktop light is located • This is normal. is warm even when below the oven floor. When the oven has not light is on, the heat it produces been used may make the oven floor get warm.

You hear an unusual You have tried to change • Many of the oven’s features are preset and low-tone beep the power level when it is cannot be changed.

not allowed.

Food browns on top Rack has been placed • Always use the rack in its “low” position. much faster than in the “high” position. on the bottom

Oven temperature The cooking element cycles • This is normal. fluctuates during on and off to maintain cooking the oven temperature

at the desired setting.

Vent fan comes on The vent fan automatically turns • This is normal. automatically on to protect the microwave if it

senses too much heat rising from the cooktop below.

SENSOR ERROR appears When using a Sensor feature, • Do not open door until steam is sensed and time on the display the door was opened before is shown counting down on the display.

steam could be detected.

Steam was not detected in • Use Time Cook to heat for more time. a maximum amount of time.

(Continued next page)

– 28 –

Page 29

Microwave Leak Test

Control Operation Test

Place 275 ml water in 600 ml beaker. 1. (Part # WB64 x 5010)

Place beaker in the center of the oven glass.2.

Set meter to 2450 MHz scale.3.

Turn ON for 5-minute test.4.

Hold the probe perpendicular to the surface 5. being tested. Scan surfaces at the rate of one inch per second. Test the following areas:

Entire perimeter of the door and control • panel

Viewing surface of the door window•

Exhaust vents•

Maximum leakage is 4 MW/CM6.

Note:

Maximum allowable leakage is 5 MW/CM• MW/CM2 is used to allow for measurement and meter accuracy.

. Four

Set Clock: Touch the clock pad, enter time of • day, AM/PM, and touch start pad.

Alternately touch each function pad and enter • time or temperature and selection for the function - also change power levels.

Touch Clear-Off after each function test to clear • that function.

Repeat procedure for each function to exercise • each pad.

The control and display should respond to each • entry.

The display should revert to Time-Of-Day after • each Clear-Off. Refer results to the diagnosis ﬂ ow chart.

Door/Cavity Distance Test

When safety interlocks and monitor switches are repaired or replaced, check the distance between the door and the cavity of the oven.

Inform the manufacturer of any oven found to • have emission in excess of 5 MW/CM2. Instruct the owner not to use the oven until it has been brought into compliance.

Performance Test

The standard test load is 1 liter (1000 ml) of water with an initial temperature of 59°F ~ 75°F in a 1000 ml beaker (WB64 X 73 or Robonar 14882).

Performance Test for Microwave:

Record initial water temperature.1.

Run at high power for 2:03 minutes.2.

Note: Because the time can only be set in 15-

second increments on this model, set the time for 2:15 and end the test when the display reaches 0:12.

Use a piece of paper 0.02 in. thick, 1 in. wide, 1. and 4 in. long (a dollar bill folded in half twice lengthwise is about this size).

Open the oven door and place the paper 2. between the door and the front frame of the oven cavity.

Close the oven door to capture the paper 3. between the door and the cavity front frame.

Draw the paper from between the door and the 4. cavity (check at the bottom and sides of the door too). If there is resistance to the removal of the paper, then the distance is correct.

Record end water temperature.3.

The minimum difference between the initial and ending temperatures should be: 30°F @ 120V.

– 29 –

Page 30

Interlocks (Door Latch Switches)

Latch Board

Latch Pawl

Switch(Top)

Monitor Interlock Switch(Middle)

Door Sensing Switch(Botton)

Latch Pawl

The interlocks are designed as follows:

Secondary - The top switch is operated by the top latch pawl connected to the line (L) leg.

5. Reconnect the switch wiring.

6. Test the circuit operation: a. Connect a temporary jumper across the

relay contacts and the primary switch to simulate shorted switch contacts. Locate convenient connections in the circuit to be certain the COM and N.O. terminals are used.

Primary Interlock

To test the interlocks:

Disconnect power to the oven.1.

Open the control panel.2.

Discharge the capacitor.3.

Primary - check continuity of COM and N.O.:4.

Door Closed - 0 • Ω

Door Open - ∞ • Ω

Monitor Switch

The monitor switch is located between the top and bottom interlocks. The monitor switch is operated indirectly by the bottom latch pawl.

b. Connect an ohmmeter (Low Scale) across

the two line terminals of the appliance power cord. Continuity must show:

Door Closed - Some • Ω

Door Open - 0 • Ω

c. Remove the 20-Amp. fuse - the circuit must

open (∞ Ω). If not, check the wiring of the monitor and interlock circuits.

7. After the test, remove the temporary jumpers

and reconnect the monitor switch leads.

TOP SW. BKT.ADJ.

BOTTOM SW.

BKT.ADJ.

PRIMARY

MONITOR SW DOOR SENSING

To adjust the interlocks:

To test the interlock system:

Disconnect power to the oven.1.

Open the control panel.2.

Discharge the capacitor.3.

Disconnect the monitor switch leads and test at 4. the terminals:

Door Closed - ∞ • Ω

Door Open - 0 • Ω

The switch housing is adjustable for door ﬁ t and switch operation.

– 30 –

Disconnect power to the oven.1.

Open the control panel.2.

Discharge the capacitor.3.

Loosen the 2 Phillips-head screws that attach 4. the door switch bracket to the oven frame.

Adjust the switch bracket for proper switch 5. operation and door ﬁ t. Retighten screws.

Check for microwave leakage after any 6. adjustment and distance between the door and cavity of the microwave.

Page 31

Key Panel Test

If necessary, the key panel pads can be veriﬁ ed by a continuity test. For ease of handling, the key panel should be removed and placed on a ﬂ at surface. Check the continuity between the connections at the end of the ribbon. (Use high W scale.)

PAD

POPCORN POWER LEVEL CLOCK BEVERAGE TIME COOK TIMER POTATO COMBO GRILL OPTIONS AUTO COOK MANUAL GRILL

CONN.

1-9 1-10 1-11

2-9 2-10 2-11

3-9 3-10 3-11

4-9 4-10

PAD

HELP DEFROST START/PAUSE ADD 30 SECONDS CLEAR/OFF TURNTABLE LIGHT VENT SOFTEN MELT AUTO GRILL

CONN.

4-11

5-9

5-10

6-9 6-10 6-11

7-9 7-10

8-9 8-10

– 31 –

Page 32

Schematics and Wiring Diagrams

SCHEMATIC DIAGRAM

WARNING

POWER MUST BE DISCONNECTED

BEFORE SERVICING THIS APPLANCE

MODEL NAME

JVM1665

(Continued Next Page)

– 32 –

Page 33

MODEL NAME

JVM1665

VM1665

WIRING DIAGRAM

WARNING

POWER MUST BE DISCONNECTED

BEFORE SERVICING THIS APPLANCE

G1 B1 GN1 BL1 Y1

R2 R3

PK1

B5 Y5

R4 B7

Y7 Y4

R5 Y7 B2 B7

Y2 PK2 BL3 PK3

Y2 BL3

PK2 PK3

– 33 –

LVT

Page 34

Warranty

All warranty service provided by our Factory Service Centers, or an authorized Customer Care

technician. To schedule service, on-line, visit us at ge.com, or call 800.GE.CARES (800.432.2737). Please have serial and model numbers available when calling

Staple your receipt here.

Proof of the original purchase

date is needed to obtain service

under the warranty.

for service.

For The Period Of: GE Will Replace:

One Year Any part of the microwave oven which fails due to a defect in materials or workmanship.

From the date of the During this limited one-year warranty, GE will also provide, free of charge, all labor and related original purchase service to replace the defective part.

What GE Will Not Cover:

■ Service trips to your home to teach you how to use

the product.

■ Improper installation, delivery or maintenance.

■ Product not accessible to provide required service.

■ Failure of the product or damage to the product if it is

abused, misused (for example, cavity arcing from wire rack or metal/foil), or used for other than the intended purpose or used commercially.

■ Replacement of the cooktop light bulbs.

■ Replacement of house fuses or resetting of circuit

breakers.

■ Damage to the product caused by accident, fire, floods

or acts of God.

■ Incidental or consequential damage caused by possible

defects with this appliance.

■ Damage caused after delivery.

EXCLUSION OF IMPLIED WARRANTIES—Your sole and exclusive remedy is product repair as provided in this Limited Warranty. Any implied warranties, including the implied warranties of merchantability or fitness for a particular purpose, are limited to one year or the shortest period allowed by law.

This warranty is extended to the original purchaser and any succeeding owner for products purchased for home use within the USA. If the product is located in an area where service by a GE Authorized Servicer is not available, you may be responsible for a trip charge or you may be required to bring the product to an Authorized GE Service Location for service. In Alaska, the warranty excludes the service calls to your home.

Some states do not allow the exclusion or limitation of incidental or consequential damages. This warranty gives you specific legal rights, and you may also have other rights which vary from state to state. To know what your legal rights are, consult your local or state consumer affairs office or your state’s Attorney General.

Warrantor: General Electric Company. Louisville, KY 40225

– 34 –