KB-6015KS KB-6015KK KB-6015KW SERVICE MANUAL S25M246KB6015 MICROWAVE DRAWER MODELS KB-6015KS KB-6015KK KB-6015KW KB-6015KS pictured In the interest of user-safety the unit should be restored to its original condition and only parts identical to those specified should be used. WARNING TO SERVICE PERSONNEL: This service manual is intended for use by persons having electrical and mechanical training and a level of knowledge of these subjects generally considered acceptable in the appliance repair trade.
KB-6015KS KB-6015KK KB-6015KW 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.
KB-6015KS KB-6015KK KB-6015KW WARNING TO SERVICE PERSONNEL Range units contain circuitry capable of producing very high voltage and current, contact with following parts may result in a severe, possibly fatal, electrical shock. (Example) High Voltage Capacitor, High Voltage Power Transformer, Magnetron, High Voltage Rectifier Assembly, High Voltage Harness, Heating Elements, etc.. Read the Service Manual carefully and follow all instructions. Before Servicing 1.
KB-6015KS KB-6015KK KB-6015KW MICROWAVE MEASUREMENT PROCEDURE A. Requirements: 1) Microwave leakage limit (Power density limit): The power density of microwave radiation emitted by a microwave oven should not exceed 1mW/cm2 at any point 5cm or more from the external surface of the oven, measured prior to acquisition by a purchaser, and thereafter (through the useful life of the oven), 5 mW/cm2 at any point 5cm or more from the external surface of the oven.
KB-6015KS KB-6015KK KB-6015KW SERVICE MANUAL PRODUCT DESCRIPTION MICROWAVE DRAWER SCHEMATICS KB-6015KS KB-6015KK / KB-6015KW FOREWORD TEST PROCEDURE This Manual has been prepared to provide Sharp Electronics Corp. Service Personnel and Service Information for the MICROWAVE DRAWER, KB-6015KS, KB-6015KK, and KB-6015KW. TOUCH CONTROL PANEL It is recommended that service personnel carefully study the entire text of this manual so that they will be qualified to render satisfactory customer service.
KB-6015KS KB-6015KK KB-6015KW MICROWAVE DRAWER SPECIFICATION ITEM DESCRIPTION Power Requirments 120 Volts 14.5 Amperes, 1000 watts 60 Hz Single phase, 3 wire grounded Power Output 1000 watts (IEC TEST PROCEDURE) Operating frequency of 2450MHz Cooking Cavity Dimensions Width 17-11/32 Height 5-7/8" Depth 17-1/8" 1.0 Cubic Feet Case Dimensions Width 30" Height 15-9/32" Depth 26-1/16" Control Complement Touch Control System Clock ( 1:00 - 12:59 ) Timer (0 - 99 min.
GENERAL INFORMATION KB-6015KS KB-6015KK KB-6015KW GROUNDING INSTRUCTIONS This oven is equipped with a three prong grounding plug. It must be plugged into a wall receptacle that is properly installed and grounded in accordance with the National Electrical Code and local codes and ordinances. In the event of an electrical short circuit, grounding reduces the risk of electric shock by providing an escape wire for the electric current.
KB-6015KS KB-6015KK KB-6015KW OPERATION DESCRIPTION OF OPERATING SEQUENCE the secondary interlock switch and secondary interlock relay and is mechanically associated with the drawer so that it will function in the following sequence. (1) When the drawer opens from the closed position, the secondary interlock relay (RY2) and secondary interlock switch open their contacts. And contacts of the relay (RY1) remains closed. Then the monitor switch contacts close.
KB-6015KS KB-6015KK KB-6015KW SENSOR COOKING CONDITION 2. The coil of shut-off relay (RY-1) is energized, but the power transformer is not turned on. 3. After about 16 seconds, the cook relay (RY-2) is energized. The power transformer is turned on, microwave energy is produced and first stage is started. The 16 seconds is the cooling time required to remove any vapor from the oven cavity and sensor. Using the SENSOR function, food is cooked without figuring time, power level or quantity.
120VAC 60 Hz. N H GND GRN "TO SOURCE" L N "TO SOURCE" LINE CROSS CAPACITOR 1.0 μF 275V RESISTOR 470 kΩ 1/2W FUSE 20A NOISE FILTER NOISE SUPRESSION COIL RED WHT WHT A5 A7 LOW VOLTAGR TRANSFORMER GRN MICROWAVE DRAWER BLK ORG MG THERMAL CUT-OUT ORG OVEN THERMAL CUT-OUT CN501 1 CN501 3 ORG 2. Terminal that located to the right side on the lamp socket's back view must be connected to neutral wire. 3. Only certain models use the absolute humidity sensor 4.
TEST PROCEDURES PROCEDURE LETTER A KB-6015KS KB-6015KK KB-6015KW COMPONENT TEST TOUCH CONTROL PANEL ASSEMBLY TEST The touch control panel consists of circuits including semiconductors such as LSI, ICs, etc. Therefore, unlike conventional microwave ovens, proper maintenance cannot be performed with only a voltmeter and ohmmeter.
KB-6015KS KB-6015KK KB-6015KW TEST PROCEDURES PROCEDURE LETTER COMPONENT TEST 4) 5) 6) 7) B Reconnect all leads removed from components during testing. Re-install the covers. Reconnect the power supply cord after the covers are installed. Run the oven and check all functions. KEY UNIT TEST 1. Disconnect the power supply cord, and then remove outer case. 2. Open the drawer and block it open. 3. Discharge high voltage capacitor. 4.
KB-6015KS KB-6015KK KB-6015KW TEST PROCEDURES PROCEDURE LETTER COMPONENT TEST 12.Re-install the outer case (cabinet). 13.Reconnect the power supply cord after the outer case is installed. 14.Run the oven and check all function. D DEFROST TEST WARNING : The oven should be fully assembled before following procedure. (1) Place one cup of water in the center of the tray in the oven cavity. (2) Close the drawer, touch the Defrost pad. Then select Steaks/Chops by touching the number pad 2.
KB-6015KS KB-6015KK KB-6015KW TEST PROCEDURES PROCEDURE LETTER COMPONENT TEST 11) 12) 13) 14) 15) F Discharge high voltage capacitor. Reconnect all leads removed from components during testing. Re-install the outer case (cabinet). Reconnect the power supply cord after the outer case is installed. Run the oven and check all functions. AH SENSOR TEST Checking the initial sensor cooking condition WARNING : The oven should be fully assembled before following procedure.
KB-6015KS KB-6015KK KB-6015KW TEST PROCEDURES PROCEDURE LETTER COMPONENT TEST 9-2. Place the container on the center of tray in the oven cavity. 9-3. Close the drawer. 9-4. Touch the TIMER/CLOCK pad once, the POWER LEVEL pad twice and the START pad once. And touch the number pads 1 once and the number pad 4 once. 9-5. The control panel is in automatic Sensor operation. 9-6. The oven turns off automatically, and the time for detecting moisture will be displayed.
KB-6015KS KB-6015KK KB-6015KW TEST PROCEDURES PROCEDURE LETTER COMPONENT TEST Refer to the disassembly instructions found on Page 16. G MAGNETRON ASSEMBLY TEST 1. 2. 3. 4. 5. 6. 7. 8. 9. Disconnect the power supply cord. Open the drawer and keep it open. To discharge high voltage capacitor, wait for 60 seconds. To test for an open filament, isolate the magnetron from the high voltage circuit. A continuity check across the magnetron filament leads should indicate less than 1 ohm.
KB-6015KS KB-6015KK KB-6015KW TEST PROCEDURES PROCEDURE LETTER I COMPONENT TEST SECONDARY INTERLOCK SWITCH TEST 1. 2. 3. 4. Disconnect the power supply cord. Open the drawer and keep it open. To discharge high voltage capacitor, wait for 60 seconds. Isolate the switch and connect the ohmmeter to the common (COM.) and normally open (NO) terminal of the switch. The meter should indicate an open circuit with the drawer open and a closed circuit with the drawer closed.
KB-6015KS KB-6015KK KB-6015KW TEST PROCEDURES PROCEDURE LETTER L COMPONENT TEST BLOWN MONITOR FUSE TEST 1. 2. 3. 4. Disconnect the power supply cord. Open the drawer and block it open. To discharge high voltage capacitor, wait for 60 seconds. If the monitor fuse is blown when the drawer is opened, check the primary interlock switch, secondary interlock switch and monitor switch according to the "TEST PROCEDURE" for those switches before replacing the blown monitor fuse.
KB-6015KS KB-6015KK KB-6015KW TOUCH CONTROL PANEL ASSEMBLY OUTLINE OF TOUCH CONTROL PANEL 6) Power Source Circuit This circuit generates voltages necessary in the control unit from the AC line voltage. In addition, the synchronizing signal is available in order to compose a basic standard time in the clock circuit. The touch control section consists of the following units.
KB-6015KS KB-6015KK KB-6015KW DESCRIPTION OF LSI (IC-1) The I/O signal of the LSIis detailed in the following table. Pin No. Signal I/O Description 1-3 AN5- AN3 IN Terminal to change cooking input according to the Model. By using A/D converter contained in the LSI, DC voltage in accordance with the Model in operation is applied to set up its cooking constant.
KB-6015KS KB-6015KK KB-6015KW Pin No. Signal I/O 27 COM0 OUT 28 VL3 IN 29 - 31 P27- P25 OUT Turminal not used. 32 SEG20 OUT Segment data signal. Connected to LCD segment S24. 33 P23 IN Signal coming from touch key. When any one of J-4 line keys on key matrix is touched, a corresponding signal from P10P17 will be input into P23. When no key is touched, the signal is held at "L" level. 34 P22 IN Signal similar to P23.
KB-6015KS KB-6015KK KB-6015KW Pin No. Signal I/O 47 P05 OUT Description Magnetron high-voltage circuit driving signal. To turn on and off the cook relay(RY2). In 100% power operation, the signals holds “H” level during microwave cooking and “L” level while not cooking. In other cooking modes (90%, 80%, 70%, 60%, 50%, 40%, 30%, 20%, 10%, 0%) the signal turns to “H” level and “L” level in repetition according to the power level. Microwave cooking mode VARI MODE 100% power 32 sec. 0 sec. 60sec.
KB-6015KS KB-6015KK KB-6015KW HUMIDITY SENSOR CIRCUIT (1) Structure of Humidity Sensor The humidity sensor includes two thermistors as shown in the illustration. One thermistor is housed in the closed vessel filled with dry air while another in the open vessel. Each sensor is provided with the protective cover made of metal mesh to be protected from the external airflow. potential at both F-3 terminal of the absolute humidity sensor and AN6 terminal of the LSI.
KB-6015KS KB-6015KK KB-6015KW TOUCH CONTROL PANEL SERVICING A. On some models, the power supply cord between the touch control panel and the oven itself is so short that the two can’t be separated. For those models, check and repair all the controls (sensor-related ones included) of the touch control panel while keeping it connected to the oven. B. On some models, the power supply cord between the touch control panel and the oven proper is long enough that they may be separated from each other.
KB-6015KS KB-6015KK KB-6015KW PRECAUTIONS FOR USING LEAD-FREE SOLDER 1. Employing lead-free solder The "Main PWB" of this model employs lead-free solder. This is indicated by the "LF" symbol printed on the PWB and in the service manual. The suffix letter indicates the alloy type of the solder. Example: Indicates lead-free solder of tin, silver and copper. 2. Using lead-free wire solder When repairing a PWB with the "LF" symbol, only lead-free solder should be used.
KB-6015KS KB-6015KK KB-6015KW COMPONENT REPLACEMENT AND ADJUSTMENT PROCEDURE WARNING AGAINST HIGH VOLTAGE: Microwave ovens contain circuitry capable of producing very high voltage and current. Contact with the following parts may result in severe, possibly fatal, electric shock. (Example) High Voltage Capacitor, Power Transformer, Magnetron, High Voltage Rectifier Assembly, High Voltage Harness etc..
KB-6015KS KB-6015KK KB-6015KW MICROWAVE DRAWER DISASSEMBLY WARNING: Follow all safety precautions as stated at the beginning of this Service Manual before proceeding! 1. Before removing Microwave Drawer, take measures to protect the Drawer louver by either removing the louver or by letting the louver over hang off flat protected surface (Fig 1). Fig. 1 Louver 2. Open the Drawer to access the 4 mounting screws holding the unit on to the wall or cabinet opening. (Fig 1). 3.
KB-6015KS KB-6015KK KB-6015KW 7. To remove the Control Panel Frame Assembly, remove the 6 screws holding the CP frame to the C/P angle in the back (Fig 3). Fig. 3 8. Unsnap the top C/P frame assembly away from the C/P frame and unplug all wires. The C/P frame assembly is now free. At this point, you will have access to all parts of the Microwave Drawer.
KB-6015KS KB-6015KK KB-6015KW STOP SWITCH, SECONDARY INTERLOCK SWITCH AND MONITOR SWITCH REMOVAL 1. Follow the Microwave Drawer disassembly as previously stated 2. Open the drawer and keep it open. 3. To discharge the high voltage capacitor, wait for 60 seconds. 4. Remove the screw holding the latch hook to the oven flange. 5. Remove the latch hook from the oven flange. 6. Disconnect the wire leads of each switch. 7.
KB-6015KS KB-6015KK KB-6015KW DRAWER/SLIDE RAIL REMOVAL DRAWER ASSEMBLY AND CHOKE REMOVAL 1. Follow the Microwave Drawer disassembly as previously stated 2. Open the drawer and keep it open. 3. To discharge the high voltage capacitor, wait for 60 seconds. 4. Remove the both right and left side panels. 5. Remove (2) Drawer Support Covers from Choke Cover as shown in (Fig. D-1). 6. Insert a putty knife (thickness of about 0.5mm) into the gap between the choke cover and the door frame. 7.
KB-6015KS KB-6015KK KB-6015KW SWITCH ANGLE REMOVAL/ADJUSTMENT Fig. S-1 SWITCH ANGLE REMOVAL (Locate either the right or left switch angle) 1. 2. 3. 4. Follow the Microwave Drawer disassembly as previously stated Open the drawer and keep it open. To discharge the high voltage capacitor, wait for 60 seconds. To remove switch, remove screw (1) holding switch to switch angle (Fig. S-1). 5. To replace switch angle, remove bottom cover and remove the 2 screws holding the switch lever (Fig. S-2). 6.
KB-6015KS KB-6015KK KB-6015KW AUTO DRAWER GEAR REMOVAL 1. 2. 3. 4. 5. 5. 6. 7. Follow the Microwave Drawer disassembly as previously stated Open the drawer and keep it open. To discharge the high voltage capacitor, wait for 60 seconds. Unhook wiring Auto Drawer Gear. Remove the (4) screws holding the auto drawer gear to the bottom cavity angle (Fig. G-1). Pull drawer gear from cavity angle. The drawer gear is now free.
MICROWAVE DRAWER WIRING DIAGRAM 31 KB-6015KS KB-6015KK KB-6015KW
KB-6015KS KB-6015KK KB-6015KW 2 1 CN-A 2.5A A-7 3 T1 PA154DR FUSE AC 120V 60Hz 5 CN-H D4 D1 VR H-1 D3 8 D2 C1 + 1000uF/50V VRS1 10G471K A-5 1 6 D1 -- D4 1N4002L x4 5 0.1uF/50V C2 A 4 3 A K-1 GND H-3 K-3 INT B H-2 B K-2 RY5 D12 SW Reg. PWR H-8 K-8 C C 502-3 H- 9 E-3 J10 H-11 SW Reg. OUT +24V RY2 D D N.O. D5 MICRO COM E K-4 H-6 K-6 E RY1 D7 N.O. COM J11 0.1u 250V (C11) COM (O.
E-3 N-1 N-2 N-3 N-4 N-5 E-1 +24V +24V CW/CCW PWM FG GND GND SLIDE M K-8 K-7 K-5 M-5 K-6 M-3 M-2 M-1 K-4 M-6 M-7 M-4 F-1 F-2 F-3 K-2 SW Reg. PWR (RY5) FM (RY4) SM (RY3) DOOR POS. SW. REAR COM (O.L./MICRO) (RY1) DOOR SW. (CLOSE) MICRO (RY2) DOOR POS. SW3. DOOR POS. SW. FRONT AH SENSOR INT K-3 CN-F + CN-M CN-N CN-E 2K ZD2 HZU16B2 6 5 Q21 KRA224S + 7 100 100 R95 R96 - Q25 Q26 Q95 KRA102S 1 C20 1.
KB-6015KS KB-6015KK KB-6015KW 1 2 4 3 5 6 A A B B 2 RY2 D12 C D7 RY1 CNH C RY5 1 DIP 11 D5 R3 1 J11 C10 J10 N.O. D COM. Q1 D N.O. COM. R10 R1 ZD1 C2 1 RY3 CNB D10 D3 D2 D1 D4 C1 8 1 D11 1 3 RY4 E R11 E T1 VRS1 4 3 P 7 CNA C11 F FUSE F 2.5A 3 G G H H Figure S-4.
1 2 35 3 4 5 6 H H R5 1 R6 2 1 1 R7 WHA 6 CNK C3 + C3 + C21 C4 R22 C20 C2 9 8 G 1 + + CNM 1 2 ZD4 C5 C6 C8 + C8 12 11 R34 R46 1 R18 R21 R106 R105 R104 CNJ CF1 CF1 16 C13 R107 R103 R102 R101 R100 C44 D41 C54 D40 R42 2 J2 2 1 3 J1 J3 J4 J6 K R40 4 CNF 3 3 1 C0 C0 R115 C103 R114 C102 R112 C100 R113 C101 R41 + C90 C90 R68 R98 R96 R99 R95 1 C90 S0 C3 S0 C41 C30 C43 R44 Q24 Q95 1 R36 R38 R37 R35 IC6 5 1 R43 C42 C40 Q96 3 CNF 17 R52 5 R5
KB-6015KS KB-6015KK KB-6015KW CONTROL PANEL PARTS LIST Δ” may cause undue microwave exposure. Note: The parts marked “Δ The parts marked “*” are used in voltage more than 250V. REF. NO. 1-1 1-2 1-2 1-3 1-3 1-3 1-4 1-5 1-6 1-7 PART NO.
KB-6015KS KB-6015KK KB-6015KW MICROWAVE DRAWER PARTS LIST Δ” may cause undue microwave exposure. Note: The parts marked “Δ The parts marked “*” are used in voltage more than 250V. REF. NO.
KB-6015KS KB-6015KK KB-6015KW REF. NO. 3-59 3-60 3-61 3-61 3-61 3-62 3-63 3-64 3-65 3-66 3-67 3-68 3-69 3-70 3-71 3-72 3-73 3-74 3-75 3-76 PART NO.
KB-6015KS KB-6015KK KB-6015KW 2 1 4 3 6 5 MICROWAVE DRAWER 3-28 3-14 3-28 A 3-28 A 3-28 3-40 3-55 3-73 3-49 3-76 3-11 3-28 3-68 3-28 3-28 3-28 3-71 B B 3-27 3-28 3-28 3-15 3-28 3-28 3-3 3-25 3-46 3-28 3-44 3-12 3-22 3-30 3-13 3-62 3-10 3-28 3-2 3-29 3-28 3-48 3-1 3-7 3-28 3-28 3-28 3-42 C 3-54 3-26 3-56 3-28 3-28 3-57 3-9 3-24 3-27 3-4 3-39 3-45 3-28 3-18 3-63 3-46 3-53 3-36 3-28 3-32 3-8 C 3-6 3-28 3-10 3-28 3-52 3-19 3-10 3-51 3-28 3-
KB-6015KS KB-6015KK KB-6015KW PACKING PARTS LIST Δ” may cause undue microwave exposure. Note: The parts marked “Δ The parts marked “*” are used in voltage more than 250V. REF. NO. 2- 1 2- 2 2- 3 PART NO.
KB-6015KS KB-6015KK KB-6015KW PACKING TOP COVER SUPPORT CORNERS 2-1 OPERATION MANUAL 2-2 INSTALLION SHEET PACKING CASE 2-3 WOOD SCREWS SUPPORT CORNERS SUPPORT CORNERS SUPPORT CORNERS BOTTOM COVER Non-replaceable items 41
KB-6015KS KB-6015KK KB-6015KW COPYRIGHT © 2005 BY SHARP CORPORATION ALL RIGHTS RESERVED. No part of this publication may be reproduced, stored in retrieval systems, or transmitted in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without prior written permission of the publisher. 2005 SHARP CORP. (5R2.00E) Printed in U.S.