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MICROWAVE OVEN DE6612-D SERVICE Manual MICROWAVE OVEN Timer 30 Minutes Operationg Voltage 24V DC Breaking Voltage Min.21.5V, Max.29.5V Input Current Power Consumption 750W Operating frequency 2,450MHz Output Power 500W (IEC-705) Main Fuse 32V DC, 80A Dimensions(WxHxD) Outside(mm) 460 (W) X 247 (H) X 347 (D)
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 (c) Before turning on microwave power operated with the door open. for any service test or inspection within (b) Make the following safety checks on the microwave generating all ovens to be serviced before activating...
1. Precaution Follow these special safety precautions. Although the microwave oven is completely safe during ordinary use, repair work can be extremely hazrdous due to possible exposure to microwave radiation, as well as potentially lethal high voltages and currents. 1-1 Safety precautions ( 10.
1. Precautions (Continued) 1-2 General safety Requirements 20. This appliance is equipped with a 18. If the oven is not going to be in use for a long condenser. Therefore, when relocating the period of time, disconnect it and store it in a cool, well oven, be sure to first disconnect the battery, ventilated place.
2. Microwave Oven Installation Requirements Installation Requirements Installation Location Tips The requirements for proper microwave oven operation are as follows: Before installing the oven, be sure to comply with the following: Operating Voltage: 24V The installation location for the oven should be Breaking Voltage: Min.
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2. Microwave Oven Installation Requirements (continued) Installation(Continued) WARNING Take the oven’s weight into account. Check When installing the oven in a vehicle, whether any protective measure such as a large support make sure that the installation location is base is necessary or not. safe enough to avoid an injury.
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2. Microwave Oven Installation Requirements (continued) Installation(Continued) To make a hole in an accurate location, create a mark in advance with a hammer and punch. Smooth any rough edges on the holes and apply rust proof treatment to them. Remove one screws securing outer panel of microwave oven(right side) Attach left and right brackets to the outer panel panel using 8 screws(Fig.1) Secure the microwave oven brackets to the frame which has drilled holes( 4.0~4.2) using 6 screws (Tap Screws).(Fig.2)
2. Microwave Oven Installation Requirements (continued) Electrical Wiring Safety Requirements for Installation: Connection the power cable. The operating voltage should comply with the voltage specified in the label of the microwave oven type attached Do not pull Power Cable forcibly. to the back of the appliance.
2. Microwave Oven Installation Requirements (continued) Connecting the Power Cables to the Oven Install the power cable clamp required for the battery connection to the connection power cable. Do not connect the power cable to the battery yet. Bring the power cable close to the oven. Remove two nuts attached to the power connector on the rear of the oven.
3. Your New Microwave Oven 3-1. Checking Parts and Setting Up Your Microwave Oven Setting Up Your Microwave Oven Checking Parts Unpack your microwave oven and check to make sure Once connected to the power supply the that you have all the parts shown here. If any parts is display on your oven will show: missing or broken, call your dealer.
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3. Your New Microwave Oven (Continued) 3-2. Control Panel - 10 -...
4. Operation Setting Cooking Times Important Remark This following procedure explains how to cook or reheat Voltage supply of the microwave oven is limited to food. Always check your cooking settings before leaving protect the safety of product and vehicle the oven unattended.
4. Operation (Continued) Error Codes Using the Start +30 s Button This is a ONE TOUCH COOK pad. Error Items Code Cause/Remedy By touching the pad once, you can start heating instantly Low Batt. Voltage/Check the for 30 seconds. Low Voltage Batt.
5. Disassembly and Reassembly 5-1. Replacement of Magnetron, Motor Assembly and Lamp Remove the magnetron including the shield case, permanent magnet, choke coils and capacitors (all of which are contained in one assembly). 1. Disconnect all lead wires from the magnetron and lamp. 2.
5. Disassembly and Reassembly (continued) 5-2. Reassembly After replacement of the defective component parts of the door, reassemble it and follow the instructions below for proper installation and adjustment so as to prevent an excessive microwave leakage. 1. When mounting the door to the oven, be sure to adjust the door parallel to the bottom line of the oven face plate by moving the upper hinge and lower hinge in the direction necessary for proper alignment.
6. Alignment and Adjustments 6-1 Low Voltage Transformer 1. The low voltage transformer is located on the control circuit board. 2. Remove the low voltage transformer from the PCB Ass’y and check continuity. 3. Normal resistor reading is shown in the table. Resistance Terminals SLV-4300B...
6. Alignment and Adjustments (continued) Diode 6-4. High Voltage 1. Isolate the diode from the Inverter-P.C.B by disconnecting its leads. 2. With the ohm-meter set at the highest resistance scale, measure across the diode terminals. Reverse the meter leads and read the resistance. A meter with 6V, 9V or higher voltage batteries should be used to check the front-to back resistance of the diode (otherwise an infinite resistance may be read in both directions).
Troubleshooting PRECAUTION 1. Check ground before checking for trouble. 2. Be careful of the high voltage circuit 3. Discharge the high voltage capacitor. 4. When checking the continuity of the switches or transformer, disconnect lead wires from these parts and then check continuity without the power source on.
7. Troubleshooting (Continued) 7-2 Electrical Malfunction SYMPTOM CAUSE CORRECTIONS Oven is dead 1. Open or loose lead wire harness Check wire harness Main Fuse is OK. 2. Open thermal cutout switch Check magnetron or cavity thermal No display and no operation (magnetron, cavity) cutout switch is defective.
10. Wiring Diagrams and Operating Sequence (continued) 10-2. Description of Operating Sequence When oven is started, initial operating status is shown below figure. Test point WAVE FORM in circuit diagram Fan relay Lamp relay Power relay ƒ= 250Hz PWM output ƒ=27KHz Out 1 ƒ=27KHz...