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GE JS998 Series Technical Service Manual
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GE JS998 Series Technical Service Manual

GE JS998 Series Technical Service Manual

Slide-in, single and double wall ovens with trivection cooking
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See also: Owner's Manual , Instruction and Installation Manual
TECHNICAL SERVICE GUIDE
2003 Slide-In, Single and Double Wall
Ovens with Trivection
MODEL SERIES:
JS998
JT930
JT980
ZET3038
ZET3058
PUB # 31-9115 3/04
GE Consumer Products
TM
Cooking

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  • Page 1 GE Consumer Products TECHNICAL SERVICE GUIDE 2003 Slide-In, Single and Double Wall Ovens with Trivection Cooking MODEL SERIES: JS998 JT930 JT980 ZET3038 ZET3058 PUB # 31-9115 3/04...
  • Page 2 Door seals and sealing surfaces D. The oven should not be adjusted or repaired by anyone except properly qualified service personnel. GE Consumer Products Technical Service Guide Copyright © 2003 All rights reserved. This service guide may not be reproduced in whole or in part in any form without written permission from the General Electric Company.

  • Page 3: Table Of Contents

    Table of Contents Basics of Element Cycling ....................33 Component Locator Views ....................12 Components Requiring Oven Removal ................15 Control Boards Connector Locator.................. 28 Control Features ........................ 8 Control Panel ( ) ..............25 Double and Single Wall Ovens Control Panel Insert ( ) .................

  • Page 4: Introduction

    Introduction The GE Profile oven with Trivection™ technology is a microwave-assist wall oven designed to cook food up to five times faster than a traditional oven. This oven gives the user the flexibility to cook food in traditional cooking modes (bake or broil), convection modes (convection bake and convection roast) or in speedcook modes (speed bake and speed broil).
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  • Page 7: Nomenclature

    Nomenclature Model Number J T 9 8 0 B H 1 B B GE Cooking Product Product Color J = GE CC = Bisque WW = White ZE = Monogram Electric BB = Black SS = Stainless Steel Configuration Indicator for Engineering and S = 30-in.

  • Page 8: Control Features

    Control Features Using the Oven Controls SELECT CONTROL LOCK OVEN KITCHEN TIMER LIGHT ON/OFF Single oven control. SELECT UPPER OVEN LOWER OVEN CONTROL LOCK OVEN OVEN KITCHEN LIGHT TIMER LIGHT ON/OFF Double oven control. Oven Control Layout and Description Control Screen & Keypad If “F–...
  • Page 9 SELECT Control Screen and Keypad Press pad beside display to select item Broil in display. LO & HI—Traditional broil function. Speed broil Oven Control Sleep Feature—Any time the oven is not in use (no cooking, no cleaning, no help and Features no timers) for more than 10 minutes, the oven Additional cooking-related features.

  • Page 10: Operational Notes

    Control Screen and Keypad Settings Help This oven has additional settings that you Provides basic information on each may choose to use. function and how to find the function. If selected from the home screen, it gives general help. If selected while performing NOTE: On double wall ovens, Recipes is a function, it gives help on that function.
  • Page 11 • On double oven models, you can use timed • To turn this feature off, press the BACK pad baking or roasting in one oven while using for 3 seconds. The control returns to the self-clean in the other; you can also use timed FEATURES screen where SABBATH was baking or roasting in both ovens at the same originally selected.

  • Page 12: Component Locator Views

    Component Locator Views 30-in. Single Wall Oven Rear View 1 - Magnetron Thermal TCO (Thermal Cutout) 2 - High Voltage Transformer 3 - Magnetron Cooling Fan 4 - High Voltage Capacitor 5 - Left Sail Switch 6 - Stirrer Motor 7 - EMI Filter Board 8 - R1 Sail Switch Relay 9 - Right Sail Switch...
  • Page 13 30-in. Double Wall Oven Rear View 1 - Magnetron Thermal TCO (Thermal Cutout) 2 - High Voltage Transformer 3 - Magnetron Cooling Fan 4 - High Voltage Capacitor 5 - Left Sail Switch 6 - Stirrer Motor 7 - EMI Board 8 - (a) R2 and (b) R1 Sail Switch Relay 9 - Right Sail Switch 10 - Oven Vent Fan...
  • Page 14 30-in. Slide-In Range ( Shown with Cooktop Removed 1 - Magnetron Thermal TCO 2 - High Voltage Transformer 3 - Left FAD (Fan Apparency Device) TCO Rear View 4 - Right FAD TCO 5 - High Voltage Capacitor 6 - Stirrer Motor 7 - Oven Vent Fan 8 - Left Cooling Fan 9 - Right Cooling Fan...

  • Page 15: Components Requiring Oven Removal

    Oven Components Components Requiring Oven Removal To replace the components listed below, the oven must be removed from its installation. Capacitor Convection Fan Capacitor Convection Fan Motor(s) Diode EMI Board High Voltage Transformer Left Cooling Fan Lower Oven Cooling Fan Magnetron Magnetron Cooling Fan Magnetron TCO...

  • Page 16: Trivection Tm Door Assembly

    Caution: Care must be taken if reinstalling the Trivection Door Assembly door handle. Overtightening screws can damage handle. Hand-tighten screws and make sure WARNING: A microwave leakage test must be handle fits snugly to door panel (do not use performed any time a door is removed, replaced, electric driver).

  • Page 17: Oven Light Bulb Assembly

    Inner Glass Assembly Oven Light Bulb Assembly Socket Receptacle Bulb Screen OVEN Note: Arrows on the side of the inner glass assembly indicate the direction in which the oven door glass is installed. The arrows should be Glass cover pointing toward the oven cavity. Inner Door Assembly Note: The glass cover should be removed only The inner door liner, glass and hinges are one...

  • Page 18: Trivection Tm Bake, Broil And Convection Elements

    Broil Element Trivection Bake, Broil and Convection Elements • The broil element is rated at 2500 watts, has an approximate resistance value of 22 Ω, and WARNING: A microwave leakage test must be draws approximately 9 amps. performed any time an element is removed, replaced, or adjusted for any reason.

  • Page 19: Trivection Tm Convection Fan Assembly

    Trivection Convection Fan Assembly Trivection Convection Fan Motor The convection fan assembly consists of the fan The convection fan motor is located on the back guard, element, fan blade, and motor. of the oven. Refer to the schematic in the back of this manual The convection fan motor has approximate for circuitry for your specific model.

  • Page 20: Right Cooling Fan

    Oven Temperature Sensor ( Lower Cooling Fan ( Double Wall Oven Only The RTD ( Resistive Thermal Device) has a The lower cooling fan is located between the resistance of 1100 Ω at room temperature and upper and lower ovens, and has an approximate 2650 Ω...

  • Page 21: Oven Vent Fan

    • It is normal for steam to come out of this vent Sail Switches ( Double and Single Wall Ovens and the area around the vent to become hot during oven use. It is important to keep the • The left and right sail switches are normally vent unblocked to ensure proper air open limit switches located at the rear of the circulation.

  • Page 22: Lower Oven Bake And Clean Thermal Tco's ( Double Wall Ovens)

    Lower Oven Bake and Clean Thermal Left and Right Thermal TCO's ( Slide-In TCO's ( Double Wall Ovens) Range The bake and clean FAD's (Fan Apparency The left and right FAD's (Fan Apparency Device) Device) TCO's are located between the upper TCO’s are located at the rear of the component and lower ovens on the floor of the component compartment, in front of the respective cooling...

  • Page 23: High Limit Thermal One-Shot Tco

    High Limit Thermal One-Shot TCO Self-Clean Latch Motor The high limit thermal one-shot TCO is located on To remove the self-clean latch motor assembly, the rear of the oven behind the center cover and is remove the two -in. hex head screws. wired in series with L2 from the terminal block.

  • Page 24: Door Switches

    Oven Door Sense Switch Door Switches The oven door sense switch is located in the left Safety Interlocks interlock assembly on the Trivection oven. The microwave interlock system has a left and a right interlock assembly. Proper operation of the door sense switch is required for proper operation of the microwave, Left Interlock Switch Assembly - Door sense oven light, convection fan and the door lock.

  • Page 25: Control Panel ( Double And Single Wall Ovens )

    Control Panel ( Double and Single Wall Ovens Cooktop ( Slide-In Range Removal and Replacement Removing and Replacement 1. Remove the three in. hex head screws 1. Remove the Glass Touch Assembly securing the control panel to the vent trim. 2.

  • Page 26: Left Cooling Fan ( Slide-In Range )

    Microwave Components PRECAUTIONS TO BE OBSERVED BEFORE AND DURING SERVICING TO AVOID POSSIBLE EXPOSURE TO EXCESSIVE MICROWAVE ENERGY Magnetron Fan 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.

  • Page 27: Magnetron Capacitor And Diode

    HVT Cooling Fan ( Double and Single Wall Ovens • Located in the left rear corner of the control compartment. Stirrer Motor • Has an approximate resistance value of 14.5 Ω. Microwave Fuse HVT Fan The microwave fuse is located in the front corner of the control compartment next to the vent fan.

  • Page 28: Control Boards Connector Locator

    Control Boards Connector Locator WARNING: Components are electrically HOT when voltage is connected to oven. Main Logic Board When installing a new main logic board, the type of oven (Profile, Monogram or Kenmore) needs to be entered once power is reconnected. Follow the instructions on the display. If the oven control type needs to be re-entered, enter special modes screen by pressing 0803 within 5 minutes of reconnecting power.
  • Page 29 Main Power Board J102 J103 J101 J117 K102 K103 J114 J105 J113 J109 J112 J111 J107 J108 Note: Although the board is marked SWO, it is used in all ovens. J1 - Relay control inputs from Main Logic Board J3 J3 - DC power output and line monitor signals to Main Logic Board J5 K11 - L2 Double Line Break Relay for upper oven broil, bake, and bake 2 elements K7 - Broil ON/OFF Relay...
  • Page 30 Lower Oven Relay Board ( Double Wall Oven Only K121 K121 - Double Line Break (DLB) Relay (Broil/Bake/ Convection) K20 - Convection Element ON/OFF Relay K17 - Bake Element ON/OFF Relay K14 - Broil Element ON/OFF Relay J9 - DC power input and relay control inputs from Main Logic Board J4 NO NC J11 - Latch motor, oven lamps and convection...
  • Page 31 Control Panel and Board Layout 1 - Time/Temperature Display Board 2 - Glass Touch Signal Board 3 - Glass Touch Board 4 - Main Logic Board 5 - Text Display Board Glass Touch Board J1 - Output and input signals from/to Glass Touch Signal Board J1 Text and Time/Temperature Display Boards - DC power and serial data from Text Display Board to Time/Temperature Display Board (hard wired to Time/Temperature Display Board)

  • Page 32: Diagnostics And Service Information

    Diagnostics and Service Information WARNING: To prevent electrical shock, use extreme caution when diagnosing oven with outer covers removed and power on. The high voltage circuit of the magnetron power area (HVT, capacitor, diode, magnetron) is 4400V potential with respect to ground. Wait at least 5 minutes after disconnecting power before servicing the magnetron power area.

  • Page 33: Basics Of Element Cycling

    Basics of Element Cycling Trivection Oven Lower Oven option to use in Bake bake & broil as required ----- Preheat Broil broil as required ----- Convection Bake Multi convection as required ----- Convection Bake 1-Rack bake & broil as required ----- Convection Roast -----...

  • Page 34: Service Mode

    MAG TAP - Forces the control to use either the Service Mode 208 or 240 volt tap on the high voltage transformer. DO NOT use this service feature at The service mode allows the service technician to this time. Allow the control to select the make adjustments and run several important transformer voltage.

  • Page 35: Troubleshooting Cooking Loads In Service Mode

    Troubleshooting Cooking Loads in Service Mode Cooking loads (bake, broil, convection elements and convection fan) can be energized individually through the service mode (press the key next to COOKING LOADS, then appropriate load). Note: There is a 5-second delay in the electronic control activating cooking loads in service mode. When the appropriate load is turned on in the service mode, first verify that the element is heating or the fan is turning.
  • Page 36 RELAY CONTROL TABLE - SLIDE IN RANGE DC VOLTAGES AC VOLTAGES Main Pwr Board Relay Relay Control Relay Control SERVICE MODE ON=120VAC (L1-N or L2-N) Enable = 4.2Vdc ON = 0Vdc ON = 4.6Vdc Notes Function or 240VAC (L1-L2) Disable = -14.0Vdc OFF = 12Vdc OFF = -14Vdc * OFF=0V...
  • Page 37 RELAY CONTROL TABLE - DOUBLE WALL OVEN DC VOLTAGES AC VOLTAGES Main Pwr Board / DWO Board Relay Relay Control Relay Control SERVICE MODE Enable = 4.2Vdc ON=120VAC (L1-N or L2-N) ON = 0Vdc ON = 4.6Vdc Notes Function Disable = -14.0Vdc or 240VAC (L1-L2) OFF = 12Vdc OFF = -14.0Vdc *...
  • Page 38 To turn off all loads that are energized in COOKING LOADS, press the CLEAR/OFF key or exit the COOKING LOADS menu. • If load is not turned off, additional loads can be turned on at the same time. • If AC voltage measures OK, then check the load (element, fan, lock motor, HVT, etc.) and/or wiring to the load and repair/replace as required.

  • Page 39: Microwave Leakage Test

    Microwave Scan Pattern (Scan Highlighted Microwave Leakage Test Areas) 1. Place 275 mL of water in a 600-mL beaker. Front 2. Place beaker in center of oven shelf. 3. Set meter to 2450-Hz scale. 4. Enter the service mode (see Service Mode press the keypad next to COOKING LOADS, then press the keypad next to MW...

  • Page 40: Troubleshooting

    Troubleshooting Trivection Oven Main Power Board Main Logic Board Mag TCO FAD Left TCO FAD Right TCO Glass Touch Signal Board Glass Touch Assembly Text Display Board Time/Temp Display LH or RH Sail Switch R1 and R2 Relays Bake Element Bake 2 Element Broil Element Convection Element...
  • Page 41 Lower Oven (Double Wall Oven) Cooktop (Slide-In Oven) Surface Control Main Logic Board LF Surface Control Lower Oven Logic Board LF Surface Element Lower Broil Element LR Surface Control Lower Bake Element LR Surface Element Lower Convection Element RF Surface Control Lower Halogen Lamps RR Surface Control Plunger Switch...
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  • Page 70: Schematics And Wiring Diagrams

    Schematics and Wiring Diagrams Double Wall Oven (1 of 3)) WARNING: Disconnect electrical power before servicing. Caution: Label all wires prior to disconnection. Wiring errors can cause improper and dangerous operation. Verify operation after servicing. – 70 –...
  • Page 71 Double Wall Oven (2 or 3)) – 71 –...
  • Page 72 Double Wall Lower Oven (3 of 3) – 72 –...
  • Page 73 Slide-In Range Current Limit Board (1 of 3) – 73 –...
  • Page 74 Slide-In Range (2 of 3) – 74 –...
  • Page 75 Slide-In Range (3 of 3) – 75 –...
  • Page 76 Single Wall Oven (1 of 2)
  • Page 77 Single Wall Oven (2 of 2)

This manual is also suitable for:

Jt930Jt980Zet3038Zet3058Jt930 seriesJt980 series ... Show all

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