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Sharp KB-6014LS Service Manual

Microwave drawer.
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KB-6014LS pictured
In the interest of user-safety the unit should be restored to its original condition and only parts identical to those specifi ed 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. Sharp Electronics
Corporation cannot be responsible, nor assume any liability, for injury or damage of any kind arising from the
use of this manual.
Microwave ovens contain circuitry capable of producing very high voltage and current. Contact with the
following parts may result in a severe, possibly fatal, electrical shock. (High Voltage Capacitor, High Voltage
Power Transformer, High Voltage Rectifi er and Heat sink etc., and Magnetron, High Voltage Harness etc..)
BEFORE SERVICING ....................................................................................................... INSIDE FRONT COVER
WARNING TO SERVICE PERSONNEL . ................................................................................................................ 3
MICROWAVE MEASUREMENT PROCEDURE . .................................................................................................... 4
FOREWORD AND WARNING ............................................................................................................................... 5
PRODUCT SPECIFICATIONS ............................................................................................................................... 6
SCHEMATICS ...................................................................................................................................................... 10
TEST PROCEDURES .......................................................................................................................................... 11
TOUCH CONTROL PANEL ASSEMBLY .............................................................................................................. 19
MICROWAVE DRAWER DISASSEMBLY . ............................................................................................................ 7
WIRING DIAGRAMS ............................................................................................................................................ 33
PRINTED WIRING BOARDS ............................................................................................................................... 34
PARTS LIST ......................................................................................................................................................... 38
PACKING AND ACCESSORIES .......................................................................................................................... 43
SHARP ELECTRONICS CORPORATION
This document has been published to be used for after sales service only. The contents are subject to change without notice.
SERVICE MANUAL
Microwave Drawer

TABLE OF CONTENTS

MICROWAVE DRAWER
MODELS
KB-6014LS
KB-6014LK
KB-6014LW
1
KB-6014LS
KB-6014LK
KB-6014LW
S56M262KB6014
Page

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   Summary of Contents for Sharp KB-6014LS

  • Page 1: Table Of Contents

    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. Sharp Electronics Corporation cannot be responsible, nor assume any liability, for injury or damage of any kind arising from the use of this manual.
  • Page 2: Precautions To Be Observed Before And During Servicing To Avoid Possible Exposure To Excessive Microwave Energy

    KB-6014LS KB-6014LK KB-6014LW PRECAUTIONS TO BE OBSERVED BEFORE AND DUR- ING 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, () 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 microwave power for any service test or inspection within the microwave generating compart- ments, check the magnetron, wave guide or transmission line, and cavity for proper alignment, integrity, and connections. (d) Any defective or misadjusted components in the interlock, monitor, door seal, and microwave generation and transmission systems shall be repaired, replaced, or adjusted by procedures described in this manual before the oven is released to the owner. (e) A microwave leakage check to verify compliance with the Federal Performance Standard should be performed on each oven prior to release to the owner. BEFORE SERVICING Before servicing an operative unit, perform a microwave emission check as per the Microwave Measure- ment Procedure outlined in this service manual.
  • Page 3: Warning To Service Personnel

    KB-6014LS KB-6014LK KB-6014LW 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 When the testing is completed, 1. Disconnect the power supply cord, and then remove 1. Disconnect the power supply cord , and then covers. remove cabinet. . Open the drawer and keep it open. . Open the drawer and keep it open.
  • Page 4: Microwave Measurement Procedure

    KB-6014LS KB-6014LK KB-6014LW 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/cm 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/cm at any point 5cm or more from the external surface of the oven. ) Safety interlock switches: Primary interlock relay switch shall prevent microwave radiation emission in excess of the requirement as above mentioned. Secondary interlock relay and door sensing switch shall prevent microwave radiation emission in excess of 5 mW/cm at any point 5cm or more from the external surface of the oven. B. Preparation for testing: Before beginning the actual measurement of leakage, proceed as follows: 1) Make sure that the actual instrument is operating normally as specified in its instruction booklet.
  • Page 5: Foreword And Warning

    High Voltage Capacitor, Power Transformer, Magnetron, High Voltage Rectifier Assembly, High Voltage Harness; If provided, Vent Hood, Fan assembly, Cooling Fan Motor. All the parts marked “*” on parts list are used at voltages more than 50V. Removal of the outer wrap gives access to voltage above 50V. ∆ All the parts marked “ ” on parts list may cause undue microwave exposure, by themselves, or when they are damaged, loosened or removed. SHARP ELECTRONICS CORPORATION SHARP PLAZA, MAHWAH, NEW JERSEY 07430-2135...
  • Page 6: Product Specifications

    KB-6014LS KB-6014LK KB-6014LW MICROWAVE DRAWER SPECIFICATION ITEM DESCRIPTION Power Requirements 10 Volts 14.5 Amperes, 1000 watts 60 Hz Single phase, 3 wire grounded Power Output 1000 watts (IEC TEST PROCEDURE) Operating frequency of 450MHz Cooking Cavity Dimensions Width 17-11/3 Height 5-7/8" 1.0 Cubic Feet Depth 17-1/8" Outside Dimensions Width 3-7/8" Height 15-9/3" (Including drawer handle) Depth 6-1/16" Control Complement Touch Control System Clock ( 1:00 - 1:59 ) Timer (0 - 99 min. 99 seconds) Microwave Power for Variable Cooking Repetition Rate; P-HI ..........Full power throughout the cooking time P-90 .
  • Page 7: General Information

    KB-6014LS GENERAL INFORMATION KB-6014LK KB-6014LW 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. WARNING: Improper use of the grounding plug can result in a risk of electric shock. Electrical Requirements The electrical requirements are a 10 volt 60 Hz, AC only, 15 or 0 amp. fused electrical supply. It is recommended that a separate circuit serving only this appliance be provided. When installing this appliance, observe all applicable codes and ordinances. Where a two-pronged wall-receptacle is encountered, it is the personal responsibility and obligation of the customer to con- tact a qualified electrician and have it replaced with a properly grounded three-pronged wall receptacle or have a grounding adapter properly grounded and polarized. If an extension cord must be used, it should be a 3-wire, 15 amp. or higher rated cord. Do not drape over a counter top or table where it can be pulled on by children or tripped over accidentally. CAUTION: DO NOT UNDER ANY CIRCUMSTANCES CUT OR REMOVE THE ROUND GROUNDING PRONG FROM THIS PLUG. Grounded Receptacle Box...
  • Page 8: Description Of Operating Sequence

    KB-6014LS KB-6014LK KB-6014LW OPERATION DESCRIPTION OF OPERATING SEQUENCE The following is a description of component functions dur- the secondary interlock switch and secondary interlock ing oven operation. relay and is mechanically associated with the drawer so that it will function in the following sequence. OFF CONDITION 8. When the drawer opens from the closed position, the primary interlock relay (RY) and secondary interlock Closing the drawer activates the door sensing switch and switch open their contacts. And contacts of the relay secondary interlock switch. (In this condition, the monitor (RY1) remains closed. Then the monitor switch contacts switch contacts are opened.) close. When oven is plugged in, 10 volts A.C. is supplied to the 9. When the drawer is closed from the open position, the control unit. (Page 10).
  • Page 9: Sensor Cooking Condition

    KB-6014LS KB-6014LK KB-6014LW SENSOR COOKING CONDITION . The coil of shut-off relay (RY-1) is energized, but the Using the SENSOR function, food is cooked without figur- power transformer is not turned on. ing time, power level or quantity. When the oven senses enough steam from the food, it relays the information to its 3. After about 16 seconds, the cook relay (RY-) is energized. The power transformer is turned on, microprocessor which will calculate the remaining cooking microwave energy is produced and first stage is started. time and power level needed for best results. When the food The 16 seconds is the cooling time required to remove is cooked, water vapor is developed. the sensor "senses" any vapor from the oven cavity and sensor. the vapor and its resistance increase gradually. When the resistance reaches the value set according to the menu, NOTE: During this first stage, do not open the drawer or supplementary cooking is started. touch STOP/CLEAR pad.
  • Page 10: Schematics

    KB-6014LS SCHEMATIC (OFF CONDITION) KB-6014LK KB-6014LW "TO SOURCE" "TO SOURCE" FUSE RESISTOR 470 k? 1/2W LINE CROSS CAPACITOR 1.0 ? F 275V NOISE SUPRESSION COIL LINE BYPASS CAPACITOR LINE BYPASS CAPACITOR 0.0033 ? F 250V 0.0033 ? F 250V "TO LOAD"...
  • Page 11: Test Procedures

    KB-6014LS TEST PROCEDURES KB-6014LK KB-6014LW PROCEDURE COMPONENT TEST LETTER 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. In this service manual, the touch control panel assembly is divided into three units, Control Unit, Keyboard Unit and Power Unit, and troubleshooting by unit replacement is described according to the symptoms indicated. Before testing, 1) Disconnect the power supply cord, and then disassemble as per "MICROWAVE DRAWER DISASSEMBLY" page 7.
  • Page 12: Test Procedures

    KB-6014LS KB-6014LK TEST PROCEDURES KB-6014LW PROCEDURE COMPONENT TEST LETTER 4) Reconnect all leads removed from components during testing. 5) Re-install the covers. 6) Reconnect the power supply cord after the covers are installed. 7) Run the oven and check all functions. KEY UNIT TEST 1. Disconnect the power supply cord, and then remove outer case. . Open the drawer and block it open. 3. Discharge high voltage capacitor. 4. If the display fails to clear when the STOP/CLEAR pad is depressed, first verify the flat ribbon cable is making good contact, verify that the door sensing switch (stop switch) operates properly; that is the contacts are closed when the drawer is closed and open when the <KEY UNIT> CN-J drawer is open. If the door sensing switch (stop switch) is good,...
  • Page 13 KB-6014LS KB-6014LK TEST PROCEDURES KB-6014LW PROCEDURE COMPONENT TEST LETTER 1. R e-install the outer case (cabinet). 13. R econnect the power supply cord after the outer case is installed. 14. R un the oven and check all function. 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. () Close the drawer, touch the Defrost pad. Then select Steaks/Chops by touching the number pad . And touch the number pad 5. (Now, weight 0.5lb is set.) And then touch the start pad. (3) The oven is in Defrost cooking condition. (4) The oven will operate as follows WEIGHT 1ST STAGE ND STAGE 3RD. STAGE LEVEL TIME LEVEL TIME LEVEL TIME 0.5lb...
  • Page 14 KB-6014LS KB-6014LK KB-6014LW TEST PROCEDURES PROCEDURE COMPONENT TEST LETTER 11) Discharge high voltage capacitor. 1) Reconnect all leads removed from components during testing. 13) Re-install the outer case (cabinet). 14) Reconnect the power supply cord after the outer case is installed. 15) 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. (1) The oven should be plugged in at least two minutes before sensor cooking. ο ο () Room temperature should not exceed 95 F (35 (3) The unit should not be installed in any area where heat and steam are generated. The unit should not be installed, for example, next to a conventional surface unit. Refer to the “INSTALLATION INSTRUCTIONS”...
  • Page 15 KB-6014LS KB-6014LK KB-6014LW TEST PROCEDURES PROCEDURE COMPONENT TEST LETTER 9-. 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. If new sensor does not operate properly, the problem is with the control unit, and refer to explanation be- low. CHECKING CONTROL UNIT then disassemble as per "MICROWAVE DRAWER (1) Disconnect the power supply cord, and DISASSEMBLY" page 5 .
  • Page 16 KB-6014LS TEST PROCEDURES KB-6014LK KB-6014LW PROCEDURE COMPONENT TEST LETTER Refer to the disassembly instructions found on Page 16. MAGNETRON ASSEMBLY TEST 1. Disconnect the power supply cord. . Open the drawer and keep it open. 3. To discharge high voltage capacitor, wait for 60 seconds. 4. 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. 5. To test for a shorted magnetron, connect the ohmmeter leads between the magnetron filament leads and chassis ground. This test should indicate an infinite resistance. If there is little or no resistance the magnetron is grounded and must be replaced. 6. Reconnect all leads removed from components during testing. 7. Reassemble the unit. 8. Reconnect the power supply cord.
  • Page 17 KB-6014LS KB-6014LK TEST PROCEDURES KB-6014LW PROCEDURE COMPONENT TEST LETTER SECONDARY INTERLOCK SWITCH TEST 1. D isconnect the power supply cord. . Open the drawer and keep it open. 3. To discharge high voltage capacitor, wait for 60 seconds. 4. 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. If improper operation is indicated, replace the secondary interlock switch. 5. Reconnect all leads removed from components during testing.
  • Page 18 KB-6014LS KB-6014LK KB-6014LW TEST PROCEDURES PROCEDURE COMPONENT TEST LETTER BLOWN MONITOR FUSE TEST 1. Disconnect the power supply cord. . Open the drawer and block it open. 3. To discharge high voltage capacitor, wait for 60 seconds. 4. 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. CAUTION: BEFORE REPLACING A BLOWN MONITOR FUSE, T EST T HE SECONDARY INTERLOCK SWITCH, STOP SWITCH AND MONITOR SWITCH FOR PROPER OPERATION. If the monitor fuse is blown by improper switch operation, the monitor fuse and monitor switch must be replaced with "monitor fuse and monitor switch assembly" part number FFS-BA018/KIT, even if the monitor switch operates normally. The monitor fuse and monitor switch assembly is comprised of a 0 ampere fuse and switch. 5. Reconnect all leads removed from components during testing. 6. Reassemble the unit. 7. Reconnect the power supply cord. 8. Run the oven and check all functions.
  • Page 19: Touch Control Panel Assembly

    KB-6014LS KB-6014LK KB-6014LW TOUCH CONTROL PANEL ASSEMBLY OUTLINE OF TOUCH CONTROL PANEL The touch control section consists of the following units. 6) Power Source Circuit This circuit generates voltages necessary in the control (1) Key unit unit from the AC line voltage. () Control Unit In addition, the synchronizing signal is available in order (3) Power unit to compose a basic standard time in the clock circuit. Symbol Voltage Application The principal functions of these units and the signals com- VC +5V LSI(IC1) municated among them are explained below. 7) Relay Circuit Key unit A circuit to drive the magnetron, fan motor, stirrer motor The key unit is composed of a matrix, signals generated in and light the oven lamp. the LSI are sent to the key unit from P10 - P17. When a key pad is touched, a signal is completed through Buzzer Circuit...
  • Page 20 KB-6014LS KB-6014LK KB-6014LW DESCRIPTION OF LSI (IC-1) The I/O signal of the LSIis detailed in the following table. Pin No. Signal Description Terminal to change cooking input according to the Model. 1 - 3 AN5- AN3 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. AN Input signal which inform the drawer door is in the middle position between the opened position and the closed position, to LSI from the door position switch rear. AN1 Turminal not used. AN0 Turminal not used. Power source voltage: 0V (GND). CNVSS VC voltage of power source circuit input. Connected GND. Auto clear terminal.
  • Page 21 KB-6014LS KB-6014LK KB-6014LW Pin No. Signal Description Common data signal. COM0 OUT Connected to LCD signal C4. VL3 Connected VC (+5V). 9 - 31 P7- P5 OUT Turminal not used. Segment data signal. SEG0 OUT Connected to LCD segment S4. P3 Signal coming from touch key. When any one of J-4 line keys on key matrix is touched, a corresponding signal from P10- P17 will be input into P3. When no key is touched, the signal is held at "L" level. Signal similar to P23. P When any one of J-3 line keys on key matrix is touched, a corresponding signal will be input into P.
  • Page 22 KB-6014LS KB-6014LK KB-6014LW Pin No. Signal Description P05 OUT Magnetron high-voltage circuit driving signal. Microwave cooking mode Other cooking mode To turn on and off the cook relay(RY). In 100% VARI MODE ON TIME OFF TIME ON TIME OFF TIME 100% power 3 sec. 0 sec. 60sec. 0ec. power operation, the signals holds “H” level during 90% power 30 sec.  sec. 54sec. 6sec. microwave cooking and “L” level while not cooking. 80% power 6 sec. 6 sec. 48sec. 1sec. In other cooking modes (90%, 80%, 70%, 60%, 70% power 4 sec.
  • Page 23 KB-6014LS KB-6014LK KB-6014LW HUMIDITY SENSOR CIRCUIT (1) Structure of Humidity Sensor the resistance values results in that there is the same The humidity sensor includes two thermistors as shown potential at both F-3 terminal of the absolute humidity in the illustration. One thermistor is housed in the closed sensor and AN6 terminal of the LSI. The voltage of AN7 vessel filled with dry air while another in the open vessel. terminal will indicate about +.5V. This initial balancing is Each sensor is provided with the protective cover made of set up about 16 seconds after the unit is put in the Sensor metal mesh to be protected from the external airflow. Cooking mode. As the sensor cooking proceeds, the food is heated to generate moisture by which the resistance ventilation opening for sensing balance of the bridge circuit is deviated to increase the voltage available at AN6 terminal of the LSI. Then the LSI observes that voltage at AN7 terminal and compares it with its initial value, and when the comparison rate reaches the preset value (fixed for each menu to be cooked), the LSI causes the unit to stop sensor Thermistors cooking; thereafter, the unit goes in the next operation...
  • Page 24 KB-6014LS KB-6014LK KB-6014LW TOUCH CONTROL PANEL SERVICING A. On some models, the power supply cord between the 1. Precautions for Handling Electronic Components touch control panel and the oven itself is so short that This unit uses CMOS LSI in the integral part of the circuits. the two can’t be separated. For those models, check and When handling these parts, the following precautions repair all the controls (sensor-related ones included) of should be strictly followed. CMOS LSI have extremely the touch control panel while keeping it connected to high impedance at its input and output terminals. For the oven. this reason, it is easily influenced by the surrounding B.
  • Page 25 KB-6014LS KB-6014LK KB-6014LW 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. (Using normal tin/lead alloy solder may result in cold soldered joints and damage to printed patterns.) As the melting point of lead-free solder is approximately 40 C higher than tin/lead alloy solder, it is recommend that a dedicated bit is used, and that the iron temperature is adjusted accordingly. 3. Soldering As the melting point of lead-free solder (Sn-Ag-Cu) is higher and has poorer wettability, (flow), to prevent damage to the land of the PWB, extreme care should be taken not to leave the bit in contact with the PWB for an extended period of time. Remove the bit as soon as a good flow is achieved. The high content of tin in lead free solder will cause premature corrosion of the bit. To reduce wear on the bit, reduce the temperature or turn off the iron when it is not required. Leaving different types of solder on the bit will cause contamination of the different alloys, which will alter their...
  • Page 26: Component Replacement And Adjustment Procedure

    KB-6014LS KB-6014LK KB-6014LW 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.. WARNING: To Avoid possible exposure to microwave energy, please follow the instructions below before operating the oven.
  • Page 27: Microwave Drawer Disassembly

    KB-6014LS KB-6014LK MICROWAVE DRAWER DISASSEMBLY KB-6014LW 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 . Open the Drawer to access the 4 mounting screws holding the unit on to the wall or cabinet opening. (Fig 1). 3. Close Drawer and carefully pull the unit out from opening and unplug the power supply cord. 4. Remove top cover. (Fig 2). 5. Remove air cover from back of unit, then both side panels. (Fig 2).
  • Page 28 KB-6014LS KB-6014LK KB-6014LW 7. To remove the Control Panel Frame Assembly, remove the 9 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. POWER CORD REPLACEMENT 1. Un-hook the black and white AC terminals from the Noise Filter PWB and green ground wire from the back plate. (Fig 4). . Attach the black and white AC terminals from the new Power Cord to the Noise Filter as shown in figure 4. Note: The green ground wire terminal can be attached when reassembling the back plate to the drawer cavity. Fig. 4 Un-hook/Attach Ground to metal Tab on Back Plate.
  • Page 29 KB-6014LS KB-6014LK KB-6014LW STOP SWITCH, SECONDARY INTERLOCK SWITCH AND MONITOR SWITCH REMOVAL 1. Follow the Microwave Drawer disassembly as previously stated . Open the drawer and keep it open. in the top position, located on the left side of the unit. 3. To discharge the high voltage capacitor, wait for 60 The door sensing switch by itself on the right side of the seconds. unit. 4. Remove the screw holding the latch hook to the oven . Re-connect wire leads to each switch. Refer to pictorial flange. diagram. 5. Remove the latch hook from the oven flange. 3. Secure the latch hooks with mounting screws to oven 6. Disconnect the wire leads of each switch.
  • Page 30 KB-6014LS DRAWER/SLIDE RAIL REMOVAL KB-6014LK KB-6014LW DRAWER ASSEMBLY AND CHOKE REMOVAL 1. Follow the Microwave Drawer disassembly as previously NOTE: Fig. D-1 stated To remove only the . Open the drawer and keep it open. Microwave Drawer, follow steps 3. To discharge the high voltage capacitor, wait for 60 1, , 5, 8, 9 & 10 seconds. as instructed under 4. Remove the both right and left side panels.
  • Page 31 KB-6014LS KB-6014LK SWITCH ANGLE REMOVAL/ADJUSTMENT KB-6014LW SWITCH ANGLE REMOVAL Fig. S-1 (Locate either the right or left switch angle) 1. Follow the Microwave Drawer disassembly as previously stated . Open the drawer and keep it open. 3. To discharge the high voltage capacitor, wait for 60 seconds. 4. 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  screws holding the switch lever (Fig. S-2). 6. Proceed in reverse to reinstall. 7. Adjust switch. Fig. S-2 ACTUATOR REMOVAL/ADJUSTMENT 1. Follow the Microwave Drawer disassembly as previously stated . Open the drawer and keep it open. 3. To discharge the high voltage capacitor, wait for 60 seconds. 4. Locate either the right or left actuator and remove the  screws holding the actuator to the door support angles.
  • Page 32: Bottom Cover

    KB-6014LS KB-6014LK KB-6014LW AUTO DRAWER GEAR REMOVAL/INSTALLATION (This procedure requires a 14" or greater phillips screwdriver) 1. Disengage any power going to the unit. . Open the drawer and keep it open. 3. Remove the top cover and right side cabinet. 4. Unhook wiring to Auto Drawer Gear. 5. Remove bottom screw below Auto Drawer Gear (Fig. G-1). 6. Remove the (4) screws holding the auto drawer gear to the bottom cavity angle (Fig. G-2). 7. Disengage (pull) Auto Drawer Gear from rack gear and slide to the right (toward the rear), then turn motor 90 and slip out along rear of drawer (Fig. G-3). 8. Then tilt Auto Gear Motor 0 to extract the assembly out. The Auto Drawer Gear is now free. Installation: 1. Proceed in reverse to reinstall the Auto Drawer Gear taking care that the gear teeth are set into the cavity angle correctly Base plate Bottom cover Bottom cover Fig. G-1 Fig.
  • Page 33: Wiring Diagrams

    KB-6014LS KB-6014LK MICROWAVE DRAWER WIRING DIAGRAM KB-6014LW...
  • Page 34: Printed Wiring Boards

    KB-6014LS KB-6014LK KB-6014LW CN-A PA154DR D1 -- D4 2.5A 1N4002L x4 CN-H FUSE AC 120V VRS1 60Hz 10G471K SW Reg . 502-3 H- 9 SW Reg. OUT +24V H-11 N.O. MICRO N.O. (O.L) <NOTE> : IF NOT SPECIFIED, 1SS270A ( ) : NOT INSERT PARTS...
  • Page 35 KB-6014LS KB-6014LK KB-6014LW...
  • Page 36 KB-6014LS KB-6014LK KB-6014LW N.O. COM. N.O. COM. FUSE 2.5A Figure S-4. Printed Wiring Board of Power Unit...
  • Page 37 KB-6014LS KB-6014LK KB-6014LW C101 C100 R113 R112 C102 R114 C103 R115 R104 R105 R106 R100 R101 R102 R103 R107...
  • Page 38: Parts List

    KB-6014LS KB-6014LK KB-6014LW CONTROL PANEL PARTS LIST Note: The parts marked “∆” may cause undue microwave exposure. The parts marked “*” are used in voltage more than 250V. " §" MARK: PARTS DELIVERY SECTION REF. NO. PART NO. § DESCRIPTION...
  • Page 39 KB-6014LS KB-6014LK KB-6014LW BOTTOM COVER PARTS LIST Note: The parts marked “∆” may cause undue microwave exposure. The parts marked “*” are used in voltage more than 250V. REF. NO. PART NO. § DESCRIPTION Q'TY CODE 2-1 PCOVPB168MRP0A M Bottom cover...
  • Page 40 KB-6014LS KB-6014LK MICROWAVE DRAWER PARTS LIST KB-6014LW Note: The parts marked “∆” may cause undue microwave exposure. The parts marked “*” are used in voltage more than 250V. " §" MARK: PARTS DELIVERY SECTION REF. NO. PART NO. § DESCRIPTION...
  • Page 41 KB-6014LS KB-6014LK KB-6014LW REF. NO. PART NO. § DESCRIPTION Q'TY CODE 3-59 FGLSPB002MRY0 M Oven tray assy 3-60 GCOVHB058MRF0 M Choke cover 3-61 PDIF-B053MRT0 M Louver [KB6014LS] 3-61 PDIF-B054MRT0 M Louver [KB6014LK] 3-61 PDIF-B055MRT0 M Louver [KB6014LW] 3-62 RMOTDA262WRZZ M Stirrer motor 3-63 TCAUHB009MRR0 M User caution label 3-64...
  • Page 42 KB-6014LS KB-6014LK KB-6014LW MICROWAVE DRAWER 3-28 3-14 3-28 3-28 3-28 3-40 3-55 3-73 3-49 3-29 3-11 3-28 3-68 3-28 3-28 3-28 3-71 3-27 3-39 3-45 3-28 3-28 3-15 3-28 3-25 3-28 3-46 3-57 3-24 3-27 3-54 3-28 3-75 3-28 3-28...
  • Page 43: Packing And Accessories

    KB-6014LS PACKING PARTS LIST KB-6014LK KB-6014LW Note: The parts marked “∆” may cause undue microwave exposure. The parts marked “*” are used in voltage more than 250V. " §" MARK: PARTS DELIVERY SECTION REF. NO. PART NO. § DESCRIPTION Q'TY CODE...
  • Page 44 KB-6014LS KB-6014LK KB-6014LW COPYRIGHT © 006 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. 006 SHARP CORP. (6R.00E) Printed in U.S.A...

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