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MICROWAVE OVEN

KM2901T

SERVICE

Manual

MICROWAVE OVEN

CONTENTS

plated
meal

auto weight

defrost

soup

hot

drink

min.

1min.

10sec.

hr.

10min.

power clock

KM2901T

0.1kg

0.1 kg

start
1min.+

stop
cancel

1. Precaution

2. Specifications

3. Operating Instructions

4. Disassembly and Reassembly

5. Alignment and Adjustments

6. Troubleshooting

7. Exploded Views and Parts List

8. PCB Diagrams

9. Schematic Diagrams

KENWOOD

Содержание KM2901T

Страница 1: ...up hot drink min 1min 10sec hr 10min power clock KM2901T 0 1kg 0 1 kg start 1min stop cancel 1 Precaution 2 Specifications 3 Operating Instructions 4 Disassembly and Reassembly 5 Alignment and Adjustments 6 Troubleshooting 7 Exploded Views and Parts List 8 PCB Diagrams 9 Schematic Diagrams KENWOOD ...

Страница 2: ... interlock monitor switch 12 If the fuse is blown by the Interlock Monitor Switch Replace all of the following at the same time Primary and secondary switches as well as the Interlock Monitor Switch The correct adjustment of these switches is described elsewhere in this manual Make sure that the fuse has the correct rating for the particular model being repaired 13 Design Alteration Warning Use ex...

Страница 3: ...igh voltages this includes the filament voltage of the magnetron High voltage is present during any cook cycle Before touching any components or wiring always unplug the oven and discharge the high voltage capacitor See Figure 1 1 2 The high voltage capacitor remains charged about 30 seconds after disconnection Short the negative terminal of the high voltage capacitor to to the oven chassis Use a ...

Страница 4: ...ING FAN MOTOR OUTSIDE DIMENSIONS 489 W x 275 H x 356 D POWER LEVEL KM2901T 10 80W 4 sec 26 sec 20 160W 7 sec 23 sec 30 240W 10 sec 20 sec 40 320W 13 sec 17 sec 50 400W 16 sec 14 sec 60 480W 19 sec 11 sec 70 560W 22 sec 8 sec 80 640W 25 sec 5 sec 90 720W 28 sec 2 sec 100 800W 30 sec 0 sec ON TIME OFF TIME 2 2 Comparison Chart MODEL FEATURE MORE LESS AUTO COOK DISH AUTO DEFROST O TIME COOK O POWER L...

Страница 5: ...top cancel 3 Operating Instructions 3 1 Control Panel 3 1 3 2 Features External Views Door Ventilation Holes Light SafetyInterlockHoles OpenDoorPushButton GuideRoller GlassPlate DoorLatches plated meal auto weight defrost soup hot drink min 1min 10sec hr 10min power clock KM2901T 0 1kg 0 1 kg start 1min stop cancel ControlPanel 489mm 357mm 275mm 200mm 356mm plated meal auto weight defrost soup hot...

Страница 6: ...arefully 7 Remove screws from the back panel 8 Take out the fan motor 9 Remove the oven lamp by rotating to pull out from hole of air cover NOTE1 When removing the magnetron make sure that its antenna does not hit any adjacent parts or it may be damaged NOTE2 When replacing the magnetron be sure to remount the magnetron gasket in the correct position and make sure the gasket is in good condition 1...

Страница 7: ...r C because it is fragile Following the procedure as shown in the figure insert and bend a thin metal plate between Door E and Door A until you hear the tick sound 1 Insertion depth of the thin metal plate should be 0 5mm or less 4 3 4 Removal of Key Door Spring Remove pin hinge from Door E Detach spring from Door E and key door 4 3 2 Removal of Door C 4 3 3 Removal of Door E Disassembly and Reass...

Страница 8: ...ing the drive motor be sure to remount it in the correct position 8 Connect all the leads to the drive motor 9 Screw the deive motor cover to the base plate with a screw driver 10 Remount the coupler in the correct position 4 4 Replacement of Fuse 4 5 Replacement of Drive Motor Disassembly and Reassembly Screw Drive Motor Cover Base Plate Drive Motor After replacement of the defective component pa...

Страница 9: ...the FPC connector make sure that the holes on the connector are properly engaged with the hooks on the Plastic Fastener 1 Window display should not be disassembled as its mounting tabs will be broken If repair work is difficult replace with Ass y control panel 2 The membrane key board is attached to the escutcheon base with doublefaced adhesive tape Therefore applying hot air such as using of hair...

Страница 10: ...agnetron case should read open 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 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 ...

Страница 11: ...atch Body by moving it so that the oven door will not have any play in it Check for play in the door by pulling the door assembly Make sure that the latch keys move smoothly after adjustment is completed Completely tighten the screws holding the Latch Body to the oven assembly 4 Reconnect to Monitor switch and check the continuity of the monitor circuit and all latch switches again by following th...

Страница 12: ...test should be made if temperature rise is marginal NOTE 2 Output power in watts is computed by multiplying the temperature rise step E by a factor of 91 times the of centigrade temperature The microwave heat distribution can be checked indirectly by measuring the water temperature rise at certain positions in the oven 1 Prepare five beakers made of Pyrex having 100 milliliters capacity each 2 Mea...

Страница 13: ...notification after measurement 1 After adjustment and repair of a radiarion preventing device make a repair record for the measured values and keep the data 2 If the radiation leakage is more than 4 mW cm2 after determining that all parts are in good condition functioning properly and the identical parts are replaced as listed in this manual notift that fact to CENTRAL SERVICE CENTER 5 13 2 At lea...

Страница 14: ...fective monitor switch NOTE1 4 Shorted HVCapacitor 5 Shorted HVTransformer NOTE2 NOTE 1 All of these switches must be replaced at the same time refer to adjustment instructions Check continuity of power relay contacts and if it has continuity replace power relay also NOTE 2 When HVTransformer is replaced check diode and magnetron also Oven does not accept 1 Key input is not in Sequence Refer to op...

Страница 15: ...be heard 1 Loose fan and fan motor Tighten screws of fan motor 2 Loose screws on H V Transformer Tighten screws of H V Transformer 3 Shorted H V Diode Replace H V Diode Turntable motor does not rotate 1 Open or loose wiring of turntable motor Replace turntable motor 2 Defective turntable motor Oven stops operation during cooking 1 Open or loose wiring of primary Adjust door and latch switches inte...

Страница 16: ...s and Parts List 7 1 Exploded Views 7 1 M1 M4 M3 M5 M9 M8 M11 M20 M21 M23 M25 M26 M18 M17 M16 M27 M28 M29 M33 M34 M32 D1 M30 M6 M7 M10 M2 M12 M13 M15 M12 M14 M22 M24 M19 M 31 C1 C2 C3 C4 C5 C6 D5 D6 D4 D7 D8 D2 D3 C7 ...

Страница 17: ... 40001A LATCH BODY POM F20 02 40GR NTR 1 M 16 DE74 20102B TRAY COOKING GLASS T5 0 PI288 780G M745 1 M 17 DE92 90436A ASSY GUIDE ROLLER D16 5 MW4370W 1 M 18 DE67 60002A COUPLER PPS 5GR BRN M97G45 1 M 19 DE27 10020A COIL MC CHOKE TC 101 1 M 20 2501 001011 C OIL 910nF 2100V BK 54x35x75mm 20mm 1 M 21 DE61 50106A BRACKET HVC SECC T0 8 W31 L125 8 1 M 22 DE91 70063A ASSY HVD V2M6 PI9 0 0 05MT 1 M 23 DE91...

Страница 18: ...745G M745 1 Exploded Views and Parts List 7 4 Control Parts List 7 3 Door Parts List Parts No Description Specification Q ty Remarks DE60 10012A SCREW TAP TITE TH 3 M4 L10 SWR10 ZPC2 TOOTH 1 N F EA DE60 10012A SCREW TAP TITE TH 3 M4 L10 SWR10 ZPC2 TOOTH 1 P C EA DE60 10012A SCREW TAP TITE TH 3 M4 L10 SWR10 ZPC2 TOOTH 1 S M EA DE60 10080A SCREW WASHER M5 L12 2S 4 MGT DE60 10080A SCREW WASHER M5 L12...

Страница 19: ...8 P C B Diagrams 8 1 P C B Diagrams 8 1 ...

Страница 20: ...TP 1 8x3 2m 1 R19 2001 000290 R CARBON 10Kohm 5 1 8W AA TP 1 8x3 2mm 11 R07 R11 R14 R16 R17 R23 R24 2001 000429 R CARBON 1Kohm 5 1 8W AA TP 1 8x3 2mm 6 R04 R05 R06 R12 R15 R22 2001 000446 R CARBON 2 2Kohm 5 1 2W AA TP 3 3x9mm 2 R03R33 2001 000613 R CARBON 3 9Kohm 5 1 8W AA TP 1 8x3 2m 3 R13R18R20 2001 000841 R CARBON 51ohm 5 1 4W AA TP 2 4x6 4mm 7 R26 R27 R28 R29 R30 R3 1R32 2001 000904 R CARBON 6...

Страница 21: ...POWER RELAY MAIN RELAY F FA MAGNETRON NO COM NO NC BLU YEL BRN BRN BRN BLK BLU BLK COM 0V LAMP 230V40W L V TRANS PRIMARY LATCH SWITCH NO COM ORG ORG MONITOR SWITCH L FM H V T H V D H V C H V FUSE 1mH BRN BROWN BLU BLUE ORG ORANGE RED RED WHT WHITE BLK BLACK YEL YELLOW GRN GREEN Y G YELLOW GREEN SYMBOL COLOR NOTE MAIN FUSE DM 1 INPUT 230V 2 DOOR OPEN 3 LAMP ON 4 P C B PATTERN 5 P C B IN OUT POINT A...

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