MICROWAVE OVEN CK135 (WHITE) SERVICE M anual CON TEN TS M ICROWAV E OV EN 1. Precaution 2. Specifications 3. Operating Instructions 4. Disassembly and Reassembly 5. Alignment and Adjustments A ut o 1min+ A ut o / GB/ F/ D/ E/ I/ NL/ R /C 6. Troubleshooting Auto 7. Exploded Views and Parts List 8. PCB Diagrams 9.
PRECAUTIONS TO BE OBSERVED BEFORE AND DURING SERVICING TOAVOID POSSIBLE EXPOSURE TO EXCESSIVE MICROWAVE ENERGY (a) Do not operate or allow the oven to be operated with the door open.
1. Precaution Follow these special safety precautions. Although the microwave oven is completely safe during ordinary use, repair work can be extremely hazardous due to possible exposure to microwave radiation, as well as potentially lethal high voltages and currents. 1-1 Safety precautions ( ) 1. All repairs should be done in accordance with the procedures described in this manual. This product complies with Federal Performance Standard 21 CFR Subchapter J (DHHS). 2.
Pretaution 1-2 Special Servicing Precautions (Continued) 17. When checking the continuity of the witches or transformer, always make sure that the power is OFF, and one of the lead wires is disconnected. 18. Use replacement components that have the same ratings, especially for flame resistance and dielectric strength specifications. A replacement part that does not have the same safety characteristics as the original might create shock, fire or other hazards. 1-3 Special High Voltage Precautions 1.
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4. Disassembly and Reassembly 4-1 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). Cover Air Thermo S/ W Lamp 1. Disconnect all lead wires from the magnetron and lamp. 2. Remove the bracket mounting. 3.Remove the magnetron supporter 4. Remove the air cover. 5. Remove screws securing the magnetron to the wave guide. 6. Take out the magnetron very carefully. 7.
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Disassembly and Reassembly 4-3-6 Reassembly Test 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 microw ave 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. 2.
Disassembly and Reassembly 4-6 Replacement of Control Circuit Board 1. Be sure to disclyarge any static electricity from your body, and avoid touching the "Touch control" clrcuitry. 2. Disconnect the connectors from the control circuit board. 3. Remove screws securing the control circuit bord. 4. Lift up the control circuit board from right side and remove the hooks holding the contol circuit board to the box assembly.
5. Alignment and Adjustments PRECAUTION 1. High voltage is present at the high voltage terminals during any cook cycle. 2. It is neither necessary nor advisable to attempt measurement of the high voltage. 3. Before touching any oven components or w iring, alw ays unplug the oven from its pow er source and discharge the high voltage capacitor. 5-1 High Voltage Transformer 1. Remove connectors from the transformer terminals and check continuity. 2.
Alignment and Adjustments 5-4 High Voltage Capacitor 1. Check continuity of the capacitor with the meter set at the highest resistance scale. 2. Once the capacitor is charged, a normal capacitor shows continuity for a short time, and then indicates 9MΩ. 3. A shorted capacitor will show continuous continuity. 4. An open capacitor will show constant 9MΩ. 5. Resistance between each terminal and chassis should read infinite. 5-5 High Voltage Diode 1.
Alignment and Adjustments 5-8 Output Power of Magnetron CAUTION MICROWAVE RADIATION PERSONNEL SHOULD NOT ALLOW EXPOSURE TO M ICROWAVE RADIATION FROM M ICROWAVE GENERATOR OR OTHER PARTS CONDUCTING M ICROWAVE ENERGY. The output power of the magnetron can be measured by performing a water temperature rise test. Equipment needed : * Two 1-liter cylindrical borosilicate glass vessel (Outside diameter 190 mm) * One glass thermometer with mercury column NOTE: Check line voltage under load.
Alignment and Adjustments 5-9 Procedure for Measurement of Microwave Energy Leakage 1) Pour 275±15cc of 20±5˚C(68±9˚F) water in a beaker which is graduated to 600cc, and place the beaker in the center of the oven. 2) Start to operate the oven and measure the leakage by using a microwave energy survey meter. 3) Set survey meter with dual ranges to 2,450MHz. 4) When measuring the leakage, always use the 2 inch spacer cone with the probe. Hold the probe perpendicular to the cabinet door.
6. Troubleshooting PRECAUTION 1. CHECK GROUNDING 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 TRANSFORM ER, DISCONNECT ONE LEAD WIRE FROM THESE PARTS AND THEN CHECK CONTINUITY WITHOUT THE POWER SOURCE ON. TO DO OTHERWISE M AY RESULT IN A FALSE READING OR DAM AGE TO YOUR M ETER. 5. DO NOT TOUCH ANY PART OF THE CIRCUIT OR THE CONTROL CIRCUIT BOARD, SINCE STATIC DISCHARGE M AY DAM AGE IT.
Troubleshooting 6-2 Electrical Malfunction(continued) SYMPTOM CAUSE CORRECTIONS Oven lamp and fan motor turn on 1. M isadjustment or loose w iring of primary latch sw itch 2. Defective primary latch sw itch Adjust door and latch sw itches. Oven can program but timer does not start. 1. Open or loose w iring of secondary interlock sw itch 2. Off-alignment of primary interlock 3. Defective secondary interlock S/ W Adjust door and interlock sw itches. M icrow ave output is low ;.
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Exploded View s and Parts List 7-2 Main Parts List CK135/XEF No.
Exploded Views and Parts List 7-2 Main Parts List CK135/XEF No. MM65 MM66 MM67 MM68 MM69 MM71 MM72 MM88 MM93 MC22 Part Code DE72-60035R DE61-50570B DE61-00068A DE60-40009B DE61-50021A DE61-50490A DE61-50347A DE73-90027A DE60-60025A DE39-00174A Samsung Electronics Description GUIDE-AIR BRACKET-AIR GUIDE BRACKET-UPPER WASHER-TEFLON BRACKET-FLANGE BRACKET-TCO BRACKET-EARTH FERRITE-CORE PIN-FOOT WIRE HARNESS-B Specification SECC,T0.5,-,-,-,CK135,SECC T0.8,CK95,SECC,T0.6,-,-,-,CK135T,SLOT,ID22.2,OD28,T1.
Exploded View s and Parts List 7-3 Door Parts List M D08 M D04 M D06 M D17 M D09 M D02 M D07 M D10 CUSHON DOOR TAPE-DOUBLE FACE M D01 M D15 CK135/XEF No. MD01 MD02 MD04 MD06 MD07 MD08 MD09 MD10 MD15 MD17 7-4 Part Code DE94-00298A DE64-00084A DE94-00300A DE64-00087A DE61-00103A DE61-80002A DE61-80003A DE64-40264B DE64-00085A DE67-00061B Description ASSY DOOR DOOR-A ASSY DOOR-E DOOR-C SPRING-KEY HINGE-UPPER HINGE-LOWER DOOR-KEY DECORATION-DOOR SCREEN-DOOR(B) Specification Q'ty CK135T,P/WHT,1.
Exploded Views and Parts List 7-4 Control Parts List MC03 MC06 MC10 MC28 MC15 MC07 MC32 MC01 MC13 MC27 MC33 CK135/XEF No.
Exploded Views and Parts List 7-5 Casing Parts List MM80 MM94 MM74 MM173 MM76 MM75 MM57 MM83 MM751 MM81 MM77 MM82 MM78 MM73 CK135/ XEF No.
Exploded View s and Parts List 7-6 Standard Parts List CK135/ XEF Part Code DE60-10012A DE60-10012A DE60-10012A DE60-10018A DE60-10034A DE60-10045A DE60-10080B DE60-10080B DE60-10082H DE60-10082H DE60-10082H DE60-10082H DE60-10082H DE60-10082H DE60-10082H DE60-10082H DE60-10082H DE60-10082H DE60-10082H DE60-10082H DE60-10082H DE60-10098A DE60-10122A DE60-10122A DE60-20063A DE60-20063A DE60-30016A DE60-10045A DE60-10061A DE60-10122A DE60-10045A DE60-10122A DE60-10088A DE60-10082H DE60-10098A DE60-10012A De
8. P.C.B Diagrams 8-1 P.C.
P.C.B Diagrams 8-2 P.C.
9. Schematic Diagrams 9-1 Schematic Diagrams MAGNETRON HIGH VOLTAGE DIODE FA TO CHASSIS F HIGH VOLTAGE CAPACITOR RED RED RED H.V.
ELECTRONICS © Samsung Electronics Co., Ltd. M ay 2000 Printed in Korea Code No.
