Amana Menumaster RC518SU Service Manual
Amana Menumaster RC518SU Service Manual

Amana Menumaster RC518SU Service Manual

International countertop commercial microwave ovens

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Service
This manual is to be used by qualified appliance
technicians only. Maytag does not assume any
responsibility for property damage or personal
injury for improper service procedures done by
an unqualified person.
International
Countertop
Commercial
Microwave
Ovens
RC5PHBU2
P1331421M
RC5PHB2
P1331422M
RC520T2
P1331423M
RC5KFT2
P1331424M
RC5MCTP2
P1331425M
RC5MCTS2
P1331426M
RC5MDTS2
P1331427M
RC5MDTM2
P1331428M
MENUMASTER
C O M M E R C I A L
This Base Manual covers general information.
Refer to individual Technical Sheet
for information on specific models.
This manual includes, but is
not limited to the following:
RC520S
RC518SU
RC5MCTP
RC5PHBU
RC5PHB
RC5MCSP
RC5MCSS
RC5MCTS
RC5KFT
RC5MDTS
MRC518SU
MRC520S
RC5MDTM
RC518SU2
RC520S2
RC5MCSP2
RC518U2
MRC520S2
R
M I C R O W A V E
O V E N
P1327601M
P1327602M
P1327603M
P1327606M
P1327607M
P1327608M
P1327609M
P1327610M
P1327611M
P1327612M
P1327613M
P1327614M
P1327615M
P1331416M
P1331417M
P1331418M
P1331419M
P1331420M
16022149
May 2005

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Table of Contents
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Summarization of Contents

Important Information
Important Notices for Servicers and Consumers
Critical notices and responsibilities for service technicians and consumers regarding safe operation and repair.
Service Support Center
Contact information for product distributors or website for further assistance.
Recognize Safety Symbols, Words, and Labels
Explanation of safety symbols (DANGER, WARNING, CAUTION) and their meanings.
Important Safety Information
Earthing Instructions
Mandatory earthing procedures for electrical safety and risk mitigation.
Servicing of Earthing Products
Guidelines for servicing products with earthing requirements and wire color coding.
Wiring
Best practices for routing and handling wiring to prevent damage and electrical hazards.
General Information
Unpacking Oven
Procedure for inspecting and preparing the oven after delivery.
Oven Placement
Recommendations for optimal placement to ensure proper airflow and operation.
Radio Interference
Information on minimizing interference with radio and television equipment.
Earthing Instructions
Appliance must be earthed; explains the purpose of earthing wire and plug.
Microwave Oven Description
Identification and location of key oven components and parts.
Troubleshooting
Power Up
Steps to diagnose issues when the oven does not power on or displays an error code.
Standby Condition
Troubleshooting steps for issues related to the oven's standby mode.
Cook Condition
Diagnostic steps for problems occurring during the cooking cycle.
Component Testing Procedures
Thermal cutout
Procedure for testing thermal cutout components for continuity.
Diode
Procedure for testing diode resistance and voltage.
Triac
Resistance and voltage checks for triac components.
Capacitor
Testing capacitor resistance and deflection characteristics.
Snubber assembly
Procedure to measure resistance across the snubber assembly terminals.
Magnetron
Testing magnetron resistance and checking terminal to ground.
Blower motor
Procedure for measuring the resistance of the blower motor coil.
Transformer
Procedure for removing and reinstalling the main transformer.
Interlock switch
Testing continuity of interlock switch contacts in open/closed states.
Antenna motor
Procedure for measuring antenna motor resistance.
Relay
Testing relay coil resistance using an analog meter.
Line filter
Measuring resistance of line filter terminals.
Terminal block
Visual check of terminal block and fuse holding terminals.
Power cord
Testing power cord wires for continuity and grounding.
Side touch panel
Testing side touch panel for continuity.
Top touch panel
Testing top touch panel for continuity.
Display board
Testing input voltage to the display board.
H.V. board
Testing input and output voltages for the High Voltage board.
H.V. Board – Relay Test
Testing relays connected to the H.V. board for magnetron operation.
Three Magnetron Models
Component location diagrams for high voltage systems in three magnetron models.
Two Magnetron Models
Component location diagrams for high voltage systems in two magnetron models.
Display Diagnostics
Error Codes
List of display error codes and their corresponding corrective actions.
Door Interlock Primary Switch
Troubleshooting steps for the door interlock switch functionality.
Service Test
High Voltage System # 1
Test mode for evaluating High Voltage System 1 (Top Rear Magnetron).
High Voltage System # 2
Test mode for evaluating High Voltage System 2 (Top Front Magnetron).
High Voltage System # 3
Test mode for evaluating High Voltage System 3 (Bottom Magnetron).
4 NOT ACTIVE
Indicates service mode 4 is not active on these models.
5 Toggles Blower Motor Antenna Motor(s) Cavity Light (if applicable) ON/OFF.
Test mode to toggle blower motor, antenna motor, and cavity light.
6 NOT ACTIVE
Indicates service mode 6 is not active on these models.
7 Displays # of Magnetron Hours.
Displays the total operating hours for magnetrons.
8 Displays # of Door Cycles with a 1 to 1 ratio rounded to the nearest ten
Displays the number of door cycles, rounded to the nearest ten.
9 Clears Hours and Cycles (press START to activate) (Resets to 0).
Resets magnetron hours and door cycle counts.
0
Clears 'CALL SERVICE' display when activated.
Service Information
Proper Handling of Magnetron Tubes
Guidelines for careful handling and storage of magnetron tubes.
Magnetron Failure Modes
Categorization and symptoms of common magnetron failure modes.
Operating Instructions for the Holaday HI1501, HI1510, HI1710, and HI1801
Instructions for operating specific Holaday radiation leakage monitors.
Microwave Leakage Testing
Measurement with the Outer Panel Removed
Procedure for measuring radiation leakage with the outer panel off.
Measurement with a Fully Assembled Oven
Procedure for measuring radiation leakage on a complete oven assembly.
Record Keeping and Notification After Measurement
Requirements for recording leakage test results and reporting findings.
Disassembly
Door Handle
Procedure for removing and reinstalling the door handle.
Inner Door Ring Assembly
Steps to remove the inner door ring assembly components.
Door
Procedure for removing the door and outer door ring assembly.
Outer Door
Description of the outer door assembly components.
Hinge
Steps for removing and reinstalling the oven door hinges.
Outer Case
Procedure for removing and reinstalling the outer case.
Back Panel
Steps to remove and reassemble the back panel.
Splatter Shield
Procedure for removing and reinstalling the splatter shield.
Top Touch Panel Assembly
Procedure for removing and reinstalling the top touch panel.
Side Touch Panel Assembly
Procedure for removing and reinstalling the side touch panel.
High Voltage Circuit Board
Procedure for removing and reinstalling the high voltage circuit board.
Interlock Switch Module
Procedure for removing and replacing the interlock switch assembly.
Adjustment
Procedure for adjusting the interlock switch assembly for proper door latching.
Display Module
Procedure for removing and reinstalling the display module.
Top Rear Magnetron
Procedure for removing and reinstalling the top rear magnetron.
Top Front Magnetron
Procedure for removing and reinstalling the top front magnetron.
Bottom Magnetron
Procedure for removing and reinstalling the bottom magnetron.
Magnetron Cutout (TCO)
Procedure for removing and reinstalling the magnetron thermal cutout.
Cavity Thermal Cutout (TCO)
Procedure for removing and reinstalling the cavity thermal cutout.
Triacs
Procedure for removing and reinstalling triac components.
Capacitor
Procedure for removing and reinstalling capacitor components.
Transformer
Procedure for removing and reinstalling the main transformer.
Auto Transformer
Procedure for removing and reinstalling the auto transformer.
Microwave Blower Wheel and Motor
Procedure for removing and reinstalling the blower motor assembly.
Fan Blade
Procedure for removing and reinstalling the blower fan blade.
Top Antennas
Procedure for removing and reinstalling top antennas.
Bottom Antenna
Procedure for removing and reinstalling the bottom antenna.
Antenna Motors
Procedure for removing and reinstalling antenna motors.
Oven Tray Removal / Installation
Procedure for removing and installing the oven tray.
Fuse
Procedure for replacing the fuse.
Power Cord
Procedure for removing and reinstalling the power cord.
Light Socket
Procedure for removing and reinstalling the oven light socket.
Relay
Procedure for removing and reinstalling relays.
Line Filter
Procedure for removing and reinstalling the line filter.
Replacing Oven Light Bulb
Instructions for safely replacing the oven light bulb.
Component Location (Figure 1)
Diagram showing the location of major components like touch panels and display module.
Component Location (Figure 2)
Diagram showing the location of components like magnetrons, splatter shield, and filters.
Component Location (Figure 3)
Diagram showing the location of components like transformer, capacitor, and H.V. board.

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