Whirlpool MBNA990B Microwave Oven - Exploded Parts Diagram
This document provides a detailed exploded view of the Whirlpool MBNA990B microwave oven, identifying key components for service and parts replacement.
Main Unit and Exterior Components
- Main Unit (1): The central chassis and cooking cavity of the microwave.
- Outer Casing (3): The primary metal enclosure that covers the internal components.
- Front Panel Assembly (301 0): This assembly includes the door, display, and control interface.
- Control Panel Components (332 2, 356 0, 332 0): Buttons, display elements, and associated circuitry for operating the microwave.
- Door Latch/Mechanism Components (930 1, 334 0, 334 2): Parts related to the door's opening, closing, and safety latching system.
- Ventilation Grille (141 0): An air intake or exhaust grille, typically located on the front or side of the appliance.
Internal Electrical and Mechanical Components
- High Voltage Transformer (412 0): A critical component that steps up electrical voltage to power the magnetron.
- Power Transformer (404 0): Supplies electrical power to various internal circuits and functions.
- Cooling Fan Motor (420 0): Responsible for circulating air to cool internal components during operation.
- Magnetron Assembly (426 0): The component that generates the microwaves used for heating food.
- Wiring Harness (480 4): A bundle of wires and connectors that link all the electrical components together.
- Main Control Board (557 1): The electronic heart of the microwave, managing cooking cycles, power levels, and user inputs.
- Door Interlock Switch Assembly (521 0): Safety switches that ensure the microwave cannot operate when the door is not securely closed.
- Turntable Drive Motor (406 0): Powers the rotation of the glass turntable inside the cooking cavity.
Turntable Assembly
- Glass Turntable (255 0): The circular glass plate on which food is placed for even cooking.
- Turntable Roller Ring (264 0, 264 1): A support structure with wheels that guides the turntable as it rotates.
Base and Bottom Components
- Base Panel (2): The structural bottom panel of the microwave oven.
- Mounting Feet/Support (922 0): Components that elevate the appliance from the countertop or surface.
- Internal Shielding/Covers (774 1, 774 0): Metal plates or covers used to shield internal components or the cavity.
Various Fasteners and Small Parts
- Mounting Brackets and Supports (441 0, 691 0, 490 0, 022 1, 022 2, 993 8): A variety of metal brackets, supports, and mounting hardware used throughout the assembly.
- Control Panel Mounting Hardware (334 0, 334 2, 930 1): Screws and fasteners specifically used for attaching the front control panel.
- Electrical Connectors and Terminals (130 9, 633 0, 130 8, 930 0, 130 0, 652 0, 130 6, 130 3, 633 0, 130 8, 930 0): A collection of various electrical connectors, terminals, and plugs used for internal wiring connections.
