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MIDEA SERVICE MANUAL
MICROWAVE OVEN
MODEL: Digital Solo (Inverter)
Digital Grill (Inverter)
MARCH, 2018
This document is published to be used for after sales service only. The content are subject
to change without prior notice.
In interest of user safety the appliance should be restored to its original condition and only
parts identical to those should be applied.
Midea Kitchen Appliance
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Table of Contents
Related Manuals for Midea Digital Solo
Summary of Contents for Midea Digital Solo
- Page 1 MIDEA SERVICE MANUAL MICROWAVE OVEN MODEL: Digital Solo (Inverter) Digital Grill (Inverter) MARCH, 2018 This document is published to be used for after sales service only. The content are subject to change without prior notice. In interest of user safety the appliance should be restored to its original condition and only parts identical to those should be applied.
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Page 2: Table Of Contents
CONTENTS CAUTIONS INSTALLATIONS SERVICE INFORMATION TOOLS AND MEASURING INSTRUMENTS MICROWAVE LEAKAGE TEST MEASUREMENT OF MICROWAVE POWER OUTPUT NVERTER MODULE 1. Working Principle . Structure and components DISASSEMBLY AND ADJUSTMENT 1. Outer Case Removal . Power Supply Cord Removal 3. Control Panel Assembly Removal 4. -
Page 3: Cautions
CAUTIONS MICROWAVE RADIATION THE OVEN IS TO BE SERVICED Personnel should not be exposed to the ONLY microwave energy which may radiate from the BY PROPERLY QUALIFIED SERVICE magnetron or other microwave generating PERSONNEL. device if it is improperly used or connection. All input and output microwave connections, waveguide, flange and gasket must be secure never operate the device without a microwave... -
Page 4: Installations
INSTALLATIONS BEFORE YOU BEGIN, READ THE FOLLOWING INSTRUCTIONS COMPLETELY EARTHING INSTRUCTIONS INSTALLING This microwave oven is designed to be used in a fully 1. Empty the microwave oven and clean inside it with earthed condition. a soft, damp cloth. Check for damage such as It is imperative, therefore, to make sure it is properly misaligned door, damage around the door or dents earthed before servicing... -
Page 5: Service Information
SERVICE INFORMATION TOOLS AND MEASURING INSTRUMENTS NECESSARY TOOLS NECESSARY MEASURING INSTRUMENTS Tools normally used for TV servicing are sufficient. • TESTER(VOLTS-DC, AC., Ohmmeter) Standard tools are listed below. • Microwave survey meter • Diagonal pliers - Holaday HI-1500 • Long nose pliers HI-1501 •... - Page 6 MEASUREMENT WITH OUTER CASE NOTES WHEN MEASURING REMOVED • Do not exceed meter full scale deflection. • When you replace the magnetron, measure for • The test probe must be removed no faster than microwave energy leakage before the outer case 1 inch/sec (2.5 cm/sec) along the shaded area, is installed and after all necessary components are otherwise a false reading may result.
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Page 7: Measurement Of Microwave Power Output
MEASUREMENT OF MICROWAVE POWER OUTPUT • Microwave power output measurement is made with is measured while the microwave generator is the microwave oven supplied at its rated voltage and operating at full power. Magnetron filament heat-up operated at its maximum microwave power setting with time is not included. -
Page 8: Disassembly And Adjustment
DISASSEMBLY AND ADJUSTMENT 1. OUTER CASE REMOVAL 1) Disconnect the power supply cord from the outlet. 2) Remove the screws from the rear and along side edges of the case. The outer case must be moved backward to be lifted off. 2. -
Page 9: Orifice Assembly Removal
ORIFICE ASSEMBLY REMOVAL 7 . MAGNETRON REMOV 1) Disconnect the leadwire from fan motor, noise filter. 1) Disconnect the leadwire from the inverter. 2) Remove the two screws holding the orifice ASS’Y 2) Remove the air guide. ven cavity. to the 3) Carefully remove the mounting screws holding the 3) Remove the two screws holding the fan motor ASS’Y magnetron and the waveguide. -
Page 10: Turntable Motor Removal
9. PCB ASSEMBL Y REMOVAL TURNTABLE MOTOR REMOVAL 1) Remove the control panel assembly from the 1) Remove the glass tray. cavity. 2) Remove the pulley shaft VERY CAREFULLY 2) Remove screws which hold the PCB to 3) Lay the unit down on its back. control panel. -
Page 11: Interlock Continuity Test
INTERLOCK CONTINUITY TEST WARNING : FOR CONTINUED PROTECTION AGAINST EXCESSIVE RADIATION EMISSION, REPLACE ONLY WITH IDENTICAL REPLACEMENT PARTS. TYPE NO. KW3A FOR SWITCHS 2 . SECONDARY INTERLOCK SWITCH TEST 1 . PRIMARY INTERLOCK SWITCH TEST Disconnect the wire lead from the secondary When the door release button is depressed slowly switch. -
Page 12: Component Test Procedure
COMPONENT TEST PROCEDURE CAUTIONS 1. DISCONNECT THE POWER SUPPLY CORD FROM THE OUTLET WHENEVER REMOVING THE OUTER CASE FROM THE UNIT. 2. ALL OPERATIONAL CHECKS WITH MICROWAVE ENERGY MUST BE DONE WITH A LOAD (1 LITER OF WATER IN CONTAINER) IN THE OVEN. COMPONENTS TEST PROCEDURE RESULTS... - Page 13 COMPONENTS TEST PROCEDURE RESULTS Normal: Measure the resistance. HEATER ELEMENT *Grill heater (Multi-meter scale: Rx1) (Wire leads removed.) Approx. 38 ohm (at 20 ~ 30°C) Measure the resistance with 500V-100M ohm Normal: more than 0.5 Mohm insulation resistance meter. NOTE: Make sure heater is fully cooled when tested. Below specified Above specified...
- Page 14 COMPONENTS TEST PROCEDURE RESULTS Check for P.C.B. connector. L.V.Transformer of P.C.B Normal Abnormal Disconnect the 3 pin (Refer to schemetic diagram) connector from P.C.B. 1 3 5 Cooking Start RELAY 2, RELAY 3 Relay 3 OF P.C.B. (Wire leads removed.) Relay 1 Note: Relay Relay 1: Fan motor...
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Page 15: Trouble Shooting
TROUBLE SHOOTING WHEN YOU GET A COMPLAINT FROM YOUR CUSTOMER, EVALUATE THE COMPLAINT CAREFULLY. IF THE FOLLOWING SYMPTOMS APPLY, PLEASE INSTRUCT THE CUSTOMER IN THE PROPER USE OF THE MICROWAVE OVEN. THIS CAN ELIMINATE AN UNNECESSARY SERVICE CALL. CAUTIONS 1. Check grounding before checking for trouble. 2. - Page 16 (TROUBLE 1) The following visual conditions indicate a probable defective control circuit. 1. Incomplete segments. • Segment missing. • Partial segment missing. • Digit flickering (NOTE: Slight flickering is normal.) 2. Colon does not turn on or blink. 3. A distinct change in the brightness of one or more numbers in display. 4.
- Page 17 (TROUBLE 2) Oven does not operate at all ; Display window does not display any figures and no input is accepted. CONDITION CHECK RESULT CAUSE REMEDY Malfunction of the Replace primary Check continuity 1. Fuse blows. Continuity. monitor switch. and monitor of monitor switches.
- Page 18 (TROUBLE 3) Display shows all figures set, but oven does not start cooking while desired program times are set and START pad is touched. CONDITION CHECK RESULT CAUSE REMEDY Replace Defective Check continuity 1.Setting time does No continuity. secondary switch. secondary switch.
- Page 19 (TROUBLE 5) No microwave oscillation even though oven lamp and fan motor run (Display operates properly) CONDITION CHECK RESULT CAUSE REMEDY No microwave Disconnect the Defective P.C.B Replace P.C.B No continuity. oscillation. wire leads from assembly assembly relay 2 and check continuity Continuity.
- Page 20 (TROUBLE 7) Grill REMEDY CONDITION CHECK RESULT CAUSE 1. Heater is not Malfunction the Heater. Abnormal. Replace. operating. heater. Normal. Thermostat and Malfunction the Abnormal. Replace. relay3.(Grill) thermostat. Normal. Replace or Wire connection. No continuity. Open or loosen. connect tightly. 1.
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Page 21: Error Code
E ROR Description Error Code Condition PCB board electric In the last 100ms time of the inverter initialization E-01 leakage protection time, the AD value is>15 and last for 60ms. During the working process, the AD value is ≤15 and Inverter no power E-05 last for 8s then the error times add 1. -
Page 22: Attached Files List
ATTACHED FILES LIST 1. Exploded View 2. Spare Parts List 3. Wiring Diagram * Note: The manual may update without prior notice. Please download the latest version on website: https://tsp.midea.com.