Klasse KOC-154K Service Manual
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Klasse KOC-154K, 9 3. To remove door parts. A01 A02 A03 A04 A05A06A10A07A08A09 NO PARTS CODE PARTS NAME DESCRIPTION Q'TY REMARK A01 3512210300 FRAME DOOR PC 1 A02 3515204900 STOPPER HINGE *T AS KOC-1B0K0S 1 A03 3511714110 DOOR SEAL AS KOC-154K8S 1 A04 3512302800 GASKET DOOR PBT 1 A05 3513101800 HOOK POM 1 A06 3515101800 SPRING HOOK PW1 1 A07 3517008920 BARRIER-SCREEN *O GLASS T3.2 TEMPERED 1 A08 3512607400 HANDLE AS KOC-154K8S 1 A09 3516006800 SPECIAL BADGE AL KOC-154K8S 1 A10 7122401211 SCREW TAPPING T2S TRS 4X12 2
12 CAUTION : Never install the magnetron without the metallic gasket plate which is packed with each magnetron to prevent microwave leakage. Whenever repair work is carried out on magnetron, check the microwave leakage. It shall not exceed 4mW/cm 2 for a fully assembled oven with door normally closed. Magnetron antenna Metallic gasket plate Cooling fin Filament terminal 6. To rem
Klasse KOC-154K, 34 3. Case of no microwave oscillation 1) When touching M/W button, oven lamp turns on and Fan motor and turntable rotate, and cook indicator in display comes on. *Cause: RELAY 1 does not operate. - Check method 2) When touching M/W button, oven lamp does not turn on and turntable motor does not rotate but cook indicator in display comes on. *Cause: RELAY 6 does not operate. - Check method 3) When touching M/W button, oven lamp turns on and fan motor does not rotate but cook indicator in display comes on. *Cause: RELAY 7 does not operate. - Check method STATE RELAY 1 ON RELAY 1 OFF POINT A +5V DC
Klasse KOC-154K, 1 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 operated with the door open. (b) Make the following safety checks on all ovens to be serviced before activating the magnetron or other microwave source, and make repairs as necessary: (1) Interlock operation, (2) Proper door closing, (3) Seal and sealing surfaces (arcing, wear, and other damage), (4) Damage to or loosening of hinges and latches, (5) Evidence of dropping or abuse. (c) Before turning on power to the mic
Klasse KOC-154K, 31 NO PARTS CODE PARTS NAME DESCRIPTION Q'TY REMARK A00 3511724960 DOOR AS KOC-154K8S 1 B00 PKCPWF230 CONTROL-PANEL AS KOC-154K9A 1 C00 3512804150 HEATER *B AS KOC-154K9A 1 D00 3512804040 HEATER *T AS KOC-154K9A 1 E00 3512806200 HEATER *U AS KOC-1M1T9F 1 F00 3511408520 COVER *B AS KOC-154K8S 1 G00 3512525300 GUIDE AIR AS KOC-154K9A 1 P00 3512522400 GUIDE WIND AS KOR-1B4H0A 1 H01 3516117710 CAVITY AS KOC-154K8S 1 H02 3512523600 GUIDE AIR OUTLET SBHG 1 H03 3513304000 INSULATOR HEATER *T SECC 1 H04 7121400611 SCREW TAPPING T2S PAN 4X6 1 H05 3518904400 THERM
Klasse KOC-154K, 39 NO NAME LOCATION PART CODE SPECIFICATION Q'TY REMARK 42 SW RELAY RY1,2 5SC0101122 G5G-1A 1C 1P DC24V 2 43 SW RELAY RY3~5 5SC0101124 G5G-1A-DT 1C 1P DC24V 3 44 SW RELAY RY6~9 5SC0101129 CS11-24SH 1C 1P 4 45 TR Q5~8,10~14,17 TZRC106M-- KRC-106M (AUTO) 10 46 TR Q1,4 TZTA1266Y- KTA-1266Y (AUTO) (1015Y) 2 47 TR Q2,3,9,16 TZTC3198GR KTC-3198GR (AUTO) (1815GR) 4 48 TR Q15 TZTC1027Y- KTC-1027Y 1 49 TRANS POWER LVT 5EPU041351 DMR-210P 1 50 WIRE COPPER J10,11,13,15,16,18,20~22 85801052GY 1/0.52 TIN COATING 7
Klasse KOC-154K, 21 TROUBLE 3) No microwave oscillation even though fan motor rotates. CONDITION CHECK RESULT Check continuity of high voltage capacitor terminals with wires removed Continuity CAUSE Defective high voltage transformer Defective high voltage fuse REMEDY 1 Replace No microwave oscillation Check continuity of high voltage rectifier in forward and backward direction with DC megger Continuity in backward direction Defective high voltage rectifier Replace Connect megger leads to magnetron terminal and magnetron body Continuity Defective magnetron 2 Check resistance of primary and second
Klasse KOC-154K, 28 9-4. COMPONENT ACTION COOKING MODE M/W ● GRILL-1 ●● GRILL-2 ●● ● COMBI-1 ●●●● MANUAL COMBI-2 ●●●● MODE COMBI-3 ●●●● COMBI-4 ●● ● COMBI-5 ●●● ● CONVECTION40 ●● CONVECTION100~220 ●●●● FRESH PIZZA ●●●●● ONE FROZEN PIZZA ●●● ● TOUCH FRESH GRATIN ●● ●● (CRUSTY/ FROZEN GRATIN ●● ●● CAKE) CAKE ●●●●● BREAD ●●●●● ROAST BEEF ●●●●● ROAST CHICKEN ●●●●● AUTO ROAST PORK ●●●●● COOK BAKED FISH ●● ●● MODE BAKED POTATO ●● ●● RO
Klasse KOC-154K, 22 (TROUBLE 4) Grill heater (upper heater) is not heated; food will not become hot. CONDITION CHECK Check continuity of primary interlock switch Malfunction of primary Interlock switch RESULT No continuity CAUSE REMEDY CAUSE REMEDY Adjust or replace Grill heater is not heated. Check D.C voltage being supplied to RELAY (RY4) coil Faulty contacts of RELAY (RY4) or open relay coil Replace Check continuity of secondary interlock switch Malfunction of secondary interlock switch No continuity Adjust or replace Defective touch control circuit 0V Approx
Klasse KOC-154K, 16 12. To remove Rear heater assembly parts. REF NO. PART CODE PART NAME DESCRIPTION Q’TY REMARK F01 3511413500 COVER *B SBHG-3 TO.4 1 F02 3512806400 HEATER 120V 1400W 1 F03 7112401011 SCREW TAPPING T1 TRS 4X10 2 F04 7112401011 SCREW TAPPING T1 TRS 4X10 1 C01 3513002300 HOLDER HEATER SUS304 T0.5 3 C02 3512801800 HEATER 230V 1400W 1R18344 1 C03 3511800700 FAN CONVECTION SA1D-80 T0.5 1 C04 3512806000 HEATER REFLECTOR SA1D T0.5 1 C05 3511409800 COVER HEATER *B SA1D-80 T0.5 1 C06 3513303400 INSULATOR HEATER *B SBHG-1 T0.5 1 C07 3963822620 MOTOR SHADED POL
Klasse KOC-154K, 7 6. DISASSEMBLY AND ASSEMBLY - Cautions to be observed when trouble shooting. Unlike many other appliances, the microwave oven is high-voltage, high-current equipment. It is completely safe during normal operation. However, carelessness in servicing the oven can result in an electric shock or possible danger from a short circuit. You are asked to observe the following precautions carefully. 1. Always remove the power plug from the outlet before servicing. 2. Use an insulated screwdriver and ware rubber gloves when servicing the high voltage side. 3. Discharge the high voltage capacitor before touching any oven components or wiring. (1
Klasse KOC-154K, 19 8. TROUBLESHOOTING GUIDE Following the procedure below to check if the oven is defective or not. 1) Check grounding before trouble checking. 2) Be careful of the high voltage circuit. 3) Discharge the high voltage capacitor. 4) When checking the continuity of the switches, fuse or high voltage tranformer, disconnect one load wire from these parts and check continuity with the AC plug removed. To do otherwise may result in a false reading or damage to your meter. NOTE : When electric parts are checked, be sure the power cord is not inserted the wall outlet. Check wire harness, wiring and connection of the terminals and power cord before
15 11. To remove Top heater assembly parts. 1) Remove two screws (D01) and pull out Guide air outlet (D02) and insulator heater *t (D03). 2) Pull out the Top heater assembly. 3) Pull out the Harness heater (D08). 4) Remove a screw (D09). 5) Pull out the Braket heater*t(D07) from the Cover heater*t(D04). 6) Pull out the Heater miraclon(D06) from the Cover heater*t(D04). 7) Re
Klasse KOC-154K, 4 2. FEATURE DIAGRAM 1. DOOR HOOK When the door is closed, it will automatically lock shut. If door is opened while oven is operating, the magnetron will immediately stop operating. 2. DOOR VIEWING SCREEN Allows viewing of food. The screen is designed so that light can pass through, but not the microwave. 3. DOOR SEAL Door seal maintains the microwave energy within the oven cavity and prevents microwave leakage. 4. CONVECTION OUTLET & FAN 5. TOP HEATER Turns on when convection, grill and combi cooking is selected. 6. UNDER HEATER 7. C
Klasse KOC-154K, 18 7. INTERLOCK MECHANISM AND ADJUSTMENT The door lock mechanism is a device which has been specially designed to completely eliminate microwave radiation when the door is opened during operation, and thus to perfectly prevent the danger resulting from the leakage of microwave. (1) Primary interlock switch When the door is closed, the hook locks the oven door. If the door is not closed properly, the oven will not operate. When the door is closed, the hook pushes the lock lever downward. The lock lever presses the button of the microswitch. Then the button of the primary interlock switch bring it under “ON” condition. (2) Secondary interlock switch and
Klasse KOC-154K, 14 10. To remove Guide air assembly parts. 1) Remove two screws (G06) and pull out Guide air assembly. 2) Remove a screws (G07) and pull out the lamp. 3) Remove two screws (G08) and pull out the two spring terminals. 4) Remove two screws (G09). 5) Pull out the motor and the bracket damper. 6) Reverse the above steps for reassembly. NO PARTS CODE PARTS NAME DESCRIPTION Q'TY REMARK G01 3512525200 GUIDE AIR PP GP-2300 1 G02 3513601500 LAMP BL 125V 25W 1 G03 3515102700 SPRING TERMINAL SUS301 T0.5 2 G04 3966820200 MOTOR SYNCRO 120V 2W GM-16-12F17 1 G05 3510609100 BRACKET DAMPER SBHG T0.7 1 G06 7112401011 SCREW TAPPING T1 TRS 4X10 2 G07 7112401011 SCREW TAPPING T1 TRS 4
Klasse KOC-154K, 32 NO PARTS CODE PARTS NAME DESCRIPTION Q'TY REMARK H36 3512718460 HARNESS MAIN KOC-154K9A 1 H37 7122401211 SCREW TAPPING T2S TRS 4X12 1 H38 7122401211 SCREW TAPPING T2S TRS 4X12 1 H39 3966821200 MOTOR SYNCRO 120V 60HZ 2W KX63MQ2AD 1 H40 7121400611 SCREW TAPPING T2S PAN 4X6 1 H41 3516003700 SPECIAL SCREW TT3 HEX 4X8 FLG MFZN 2 H42 3511408300 COVER WAVE GUIDE MICA T0.35 1 H43 3517402500 COUPLER PTFE 1 H44 3512521000 GUIDE ROLLER AS KOC-1B0K0S 1 H45 3517207600 TRAY DIA:340 1300G 1 H46 3517211100 TRAY METAL AS KOC-1B0K0S 1 H47 3517207330 TRAY RACK AS KOC-154K8S 50MM 1 H48 3517207320 TRAY RACK AS KOC-154K8S 160MM
Klasse KOC-154K, 11 5. To remove control panel parts. (1) Remove four screws(B14) which secure the control panel. (2) Pull out the main PCB assembly(B13). (3) Remove 11 screws(B12) which secure the control panel. (4) Pull out the sub PCB assembly(B07). (5) Pull out the knob function (B09) and the knob volume(B10) from the sub PCB assembly. (6) Pull out the coupler vpc knob (B08) from the sub PCB assembly. (7) Pull out three buttons from the control panel. (8) Pull out decorator ring(B11) from the control panel. (9) Pull out the decorator c-panel (B0
Klasse KOC-154K, 3 3. EXTERNAL VIEW 2. SPECIFICATIONS * Specifications are subject to change without notice. 1. OUTER DIMENSION MODEL KOC-154K9A27 POWER SUPPLY 120V~ 60Hz, SINGLE PHASE WITH EARTHING MICROWAVE 1550W POWER GRILL 1450W CONSUMPTION CONVECTION 1750W COMBINATION 1750W MICROWAVE ENERGY OUTPUT 1000W MICROWAVE FREQUENCY 2450MHz OUTSIDE DIMENSIONS (W X H X D) 582X379.1X518.2mm (22.9x14.9x20.4 in.) CAVITY DIMENSIONS (W X H X D) 390X285.5X383mm (15.4x11.2x15.1 in.) NET WEIGHT Approx. 24Kg (52.9 lbs) TIMER 60 minutes FUNCTION SELECTIO
Klasse KOC-154K, 13 9. To remove H.V.transformer. (1) Remove four screws holding the H.V transformer. (2) Remove the H.V.transformer. (3) Reverse the above steps for reassembly. 8. To remove wind guide assembly. (1) Remove a screw which secure the wind guide assembly. (2) Draw forward the wind guide assembly. (3) Pull the fan from the motor shaft. (4) Remove two screws which secure the motor shaded pole. (5) Remove the motor shaded pole. (6) Reverse the above steps for reassembly.
10 (1) Remove the gasket door from door plate. (2) Remove two screws from the handle assembly secured to door frame. (3) Remove the handle door and barrier screen outer from door frame. (4) Remove the door frame from door plate. (5) Remove the stopper hinge top from door plate. (6) Remove the spring and the hook. (7) Reverse the above steps for reassembly. 4. Method to reduc
27 9-3. COMPONENT TEST PROCEDURE • High voltage is present at the high voltage terminal of the high voltage transformer during any cooking cycle. • It is neither necessary nor advisable to attempt measurement of the high voltage. • Before touching any oven components or wiring, always unplug the oven from its power source and discharge the capacitor. 1. High voltage transformer 1) Remove con
Klasse KOC-154K, 25 9. MEASUREMENT AND TEST 9-1. MEASUREMENT OF THE MICROWAVE POWER OUTPUT Microwave output power can be checked by indirectly measuring the temperature rise of a certain amount of water exposed to the microwave as directed below. PROCEDURE 1. Microwave power output measurement is made with the microwave oven supplied at rated voltage and operated at its maximum microwave power setting with a load of 1000 ± 5cc of potable water. 2. The water is contained in a cylindrical borosilicate glass vessel having a m
38 NO NAME LOCATION PART CODE SPECIFICATION Q'TY REMARK 1 BUZZER BZ1 3515600100 BM-20K 1 2C CERA C1~4,7~13 CCZF1H104Z 50V HIKF 0.1uF Z 11 3C CERA C5,6 CCZB1H102K 50V B 1000pF K 2 4C ELECTRO EC1 CEXE1H100A 50V RS 10uF (5X11) TP 1 5C ELECTRO EC2,EC3 CEXF1V221V 35V RSS 220uF (10X12.5) TP 2 6C ELECTRO EC4 CEXF1V102V 35V RSS 1000uF (13X25) TP 1 7C ELECTRO EC5 CEXF1H101V 50V RSS 100uF (8X11.5) TP
Klasse KOC-154K, 20 CONDITION CHECK Check continuity of magnetron Defective magnetron. RESULT No continuity CAUSE REMEDY Replace Outlet has proper voltage fuse does not blow? Check continuity of noise filter board Defective line filter board No continuity Replace Check continuity of power supply cord Defective touch control circuit Replace Open power supply cord No continuity No continuity Replace NOTE : All these switches must be replaced at the same time, please refer to (7.Interlock mechanism and adjust) for adjustment instruc
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