SERVICE MANUAL KB-3300JS KB-3300JK KB-3300JW S74R243KB330J FREE STANDING RANGE WITH MICROWAVE DRAWER MODELS KB-3300JS pictured KB-3300JS KB-3300JK KB-3300JW 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.
KB-3300JS KB-3300JK KB-3300JW 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-3300JS KB-3300JK KB-3300JW 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-3300JS KB-3300JK KB-3300JW SAFE SERVICING PRACTICES To avoid personal injury and/or property damage, it is important that Safe Servicing Practices be observed. The following are some limited examples of safe practices: 1. DO NOT attempt a product repair if you have any doubts as to your ability to complete it in a safe and satisfactory manner. 2. Before servicing or moving an appliance: • Remove the power cord from the electrical outlet, trip the circuit breaker to the OFF position, or remove the fuse.
KB-3300JS KB-3300JK KB-3300JW 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-3300JS KB-3300JK KB-3300JW NOTES 4
KB-3300JS KB-3300JK KB-3300JW SERVICE MANUAL PRODUCT DESCRIPTION FREE STANDING RANGE WITH MICROWAVE DRAWER POWER CONNECTION ANTI-TIP DEVICE KB-3300JS KB-3300JK / KB-3300JW FOREWORD SCHEMATICS This Manual has been prepared to provide Sharp Electronics Corp. Service Personnel and Service Information for the SHARP FREE STANDING RANGE WITH MICROWAVE DRAWER, KB-3300JS, KB-3300JK, and KB-3300JW.
KB-3300JS KB-3300JK KB-3300JW OVEN SPECIFICATION ITEM DESCRIPTION Power Requirements 120 /208 - 120/240Volts / 46/50 Amperes 60 Hertz Single phase, 3 wire grounded Thermal Oven Heating Elemants Top - 3000W Bottom - 2000W Case Dimensions Width 29-7/8" Height 37-5/16" Depth 27-5/16 Cooking Cavity Dimensions Width 22-5/8" Height 15-13/16" Depth 18" 3.
KB-3300JS KB-3300JK KB-3300JW MICROWAVE DRAWER SPECIFICATION ITEM DESCRIPTION Power Output 1000 watts (IEC TEST PROCEDURE) Operating frequency of 2450MHz Cooking Cavity Dimensions Width 17-11/32 Height 5-7/16" Depth 17-1/8" 1.0 Cubic Feet Control Complement Touch Control System Clock ( 1:00 - 12:59 ) Timer (0 - 99 min. 99 seconds) Microwave Power for Variable Cooking Repetition Rate; P-HI ................................................. Full power throughout the cooking time P-90 ..................
KB-3300JS KB-3300JK KB-3300JW POWER CONNECTION 208/240 VOLT CONNECTION INSTRUCTIONS ACCESS TO TERMINAL BLOCK The range can be set for 208V or 240V. The voltage setting for your range is pre-set at 240V from the factory. Follow these steps to change the voltage setting. Loosen screw on rear access cover and pull down as illustrated in Figure 6 to access terminal block wiring connection. To close, return to original location and secure screw.
KB-3300JS KB-3300JK KB-3300JW 3 Make sure all connections are tightened securely and replace the rear access cover. See Figure 7. connections. Tighten all 3 or 4-wire leads to the terminal block. Follow wire locations shown in Figure 10. IMPORTANT DO NOT LOOSEN the factory installed nut connections which secure the range wiring to the terminal block. Electrical failure or loss of electrical connection may occur if these 3 nuts are loosened or removed.
KB-3300JS KB-3300JK KB-3300JW 2 DRILL PILOT HOLES AND FASTEN BRACKET ANTI-TIP DEVICE NORMAL INSTALLATION STEPS ANTI-TIP BRACKET INSTALLATION INSTRUCTIONS IMPORTANT SAFETY WARNING To reduce the risk of tipping of the range, the range must be secured to the floor by properly installed Anti-Tip bracket and screws packed with the range. Failure to install the Anti-Tip bracket will allow the range to tip over if excessive weight is placed on an open door or if a child climbs upon it.
KB-3300JS KB-3300JK KB-3300JW CONTROL LAYOUT H OT S U R F A C E I N DI C A T OR L I G H T S C ONT R OL K NOB S C ONT R OL K NOB S C ONT R OL PANE L OFF LO OFF HI LO OFF HI LO OFF SMALL HI LARGE HI HI MED Cooktop MED MED Cooktop MED OV E N MED K EYSHEET KB-3300JS 11 MIC R OWAV E LO LO
KB-3300JS KB-3300JK KB-3300JW Schematic-Off Condition 㪚㪦㪦㪢㩷㪫㪦㪧 㪥 㪙㪣㪢 㪙㪣㪢 㪰㪣㪮 㪰㪣㪮 㪰㪣㪮 㪋 㪩㪜㪛 㪮㪟㪫 㪋㪸 㪧 㪮㪟㪫 㪈㪹 㪈㪹 㪰㪣㪮 㪚㪦㪥㪫㪩㪦㪣 㪪㪉 㪪㪈 㪧㪉 㪣㪈 㪟㪈 㪈㪹 㪉㪹 㪉㪹 㪈㪹 㪧 㪙㪩㪥 㪰㪣㪮 㪙㪣㪬 㪰㪣㪮 㪙㪣㪢 㪰㪣㪮 㪰㪣㪮 㪰㪣㪮 㪰㪣㪮 㪙㪣㪢 㪉㪹 㪉㪹 㪚㪦㪥㪫㪩㪦㪣 㪣㪈 㪰㪣㪮 㪟㪈 㪧 㪚㪦㪥㪫㪩㪦㪣 㪣㪈 㪮㪟㪫 㪰㪣㪮 㪙㪣㪢 㪦㪩㪞 㪙㪣㪢 㪙㪣㪬 㪙㪣㪢 㪙㪣㪬 㪙㪣㪢 㪙㪣㪬 㪙㪣㪬 㪟㪦㪫㩷㪪㪬㪩㪝㪘㪚㪜 㪣㪠㪞㪟㪫 㪪㪮㪠㪫㪚㪟㪜㪪 㪦㪩㪞 㪙㪣㪢 㪙㪣㪢 㪙㪣㪢 㪟㪈 㪚㪦㪥㪫㪩㪦㪣 㪮㪟㪫 㪮㪟㪫 㪰㪣㪮 㪰㪣㪮 㪙㪣㪢 㪣㪈 㪙㪣㪢 㪙㪣㪢 㪙㪣㪢 㪙㪣㪢 㪰㪣㪮 㪰㪣㪮 㪩㪜㪛 㪰㪣㪮 㪰㪣㪮 㪰㪣㪮 㪧㪈㪙 㪠㪥㪪㪠㪛㪜 㪧㪈㪘 㪦㪬㪫㪪㪠㪛㪜 㪠㪥㪛㪠㪚㪘㪫㪦㪩㩷㪣㪠㪞㪟㪫 㪈㪸 㪟㪉 㪙㪩㪥 㪰㪣㪮 㪩㪜㪛
KB-3300JS KB-3300JK KB-3300JW On condition (Bake & Microwave) 㪣㪉 㪣㪈 㪩㪜㪛 㧾㨅㧠 㪩㪜㪛 㪙㪦㪫㪫㪦㪤 㪟㪜㪘㪫㪜㪩 㪩㪜㪛 㪧㪩㪦㪫㪜㪚㪫㪦㪩 㪮㪟㪫 㪮㪟㪫 㪥 㪟㪦㪫㩷㪪㪬㪩㪝㪘㪚㪜 㪣㪠㪞㪟㪫 㪪㪮㪠㪫㪚㪟㪜㪪 㪮㪟㪫 㪮㪟㪫 㧾㨅㧞 㪧㪩㪠㪤㪘㪩㪰㩷㪠㪥㪫㪜㪩㪣㪦㪚㪢㩷㪩㪜㪣㪘㪰 㪪㪜㪚㪦㪥㪛㪘㪩㪰㩷㪠㪥㪫㪜㪩㪣㪦㪚㪢㩷㪪㪮㪠㪫㪚㪟 㪮㪟㪫 㪙㪣㪬 㪤㪘㪞㪥㪜㪫㪩㪦㪥 㪩㪜㪛 㧺 㧻㧚 㪙㪣㪢 㪙㪣㪢 㪙㪣㪢 㪩㪜㪛 㪩㪜㪚㪫㪠㪝㪠㪜㪩 㧾㨅㧝 㪦㪩㪞 㪩㪜㪛 㪧㪦㪮㪜㪩㩷㪫㪩㪘㪥㪪㪝㪦㪩㪤㪜㪩 㪥㪅㪚㪅 㪥㪅㪦㪅 㪙㪩㪥 㪙㪩㪥 㪙㪣㪢 㪙㪩㪥 㪞㪩㪰 㪤㪦㪥㪠㪫㪦㪩㩷㪪㪮㪠㪫㪚㪟 㧾㨅㧡 㧲㧝 㧯㧻㧹㧚 㪙㪩㪥 㪞㪩㪰 㧸 㪚㪘㪧㪘㪚㪠㪫㪦㪩 㪈㪅㪇㪇 㱘㪝 㪘㪚㩷㪉㪊㪇㪇㪭 㪙㪣㪢 㪙㪣㪬 㪙㪣㪬 㪮㪟㪫 㪦㪩㪞 㪉㪹 㪮㪟㪫 㪙㪣㪢 㪉㪹 㪈㪹 㪮㪟㪫 㧯㧻㧹㧚 㪙㪣㪢 4; # 㪈㪹 㪙㪩㪥 㧺 㧻 㪙㪣㪢 㪙㪣㪢 㪙
KB-3300JS KB-3300JK KB-3300JW COOK TOP SCHEMATIC (DETAIL) 㪣㪉 㪣㪉 㪰㪣㪮 㪩㪜㪛 㪩㪜㪛 㪩㪜㪛 㪰㪣㪮 㪩㪜㪛 㪋㪸 㪦㪩㪞 㪠㪥㪪㪠㪛㪜 㪮㪟㪫 㪩㪠㪞㪟㪫㩷㪩㪜㪘㪩 㪪㪬㪩㪝㪘㪚㪜 㪜㪣㪜㪤㪜㪥㪫 㪈㪸 㪉 㪮㪟㪫 㪧㪈 㪟㪈 㪮㪟㪫 㪚㪦㪥㪫㪩㪦㪣 㪧㪈 㪩㪜㪛 㪮㪟㪫 㪩㪠㪞㪟㪫㩷㪝㪩㪦㪥㪫 㪪㪬㪩㪝㪘㪚㪜 㪜㪣㪜㪤㪜㪥㪫 㪧 㪣㪈 㪧㪩㪦㪫㪜㪚㪫㪦㪩 㪣㪉 㪟㪉 㪉㪸 㪰㪣㪮 㪩㪜㪛 㪮㪟㪫 㪧㪉 㪩㪜㪛 㪙㪩㪥 㪰㪣㪮 㪰㪣㪮 㪙㪣㪢 㪧㪈 㪉 㪉㪸 㪈㪸 㪧㪈㪘 㪦㪬㪫㪪㪠㪛㪜 㪰㪣㪮 㪙㪣㪢 㪧㪈㪙 㪩㪜㪛 㪩㪜㪛 㪰㪣㪮 㪰㪣㪮 㪋 㪩㪜㪛 㪩㪜㪛 㪠㪥㪛㪠㪚㪘㪫㪦㪩㩷㪣㪠㪞㪟㪫 㪚㪦㪥㪫㪩㪦㪣 㪪㪉 㪪㪈 㪩㪜㪛 㪩㪜㪛 㪩㪜㪛 㪙㪣㪢 㪙㪣㪢 㪙㪣㪢 㪙㪣㪢 㪩㪜㪛 㪣㪈 㪰㪣㪮 㪩㪜㪛 㪩㪜㪛 㪧㪩㪦㪫㪜㪚㪫㪦㪩 㪰㪣㪮 㪰㪣㪮 㪚㪦㪦㪢㩷㪫㪦㪧 㪥 㪟㪦㪫㩷㪪㪬㪩㪝㪘㪚㪜㩷㪣㪠㪞㪟㪫㪪 㪩㪩 㪙㪣㪢 㪙㪣㪬
MICROWAVE DRAWER SCHEMATIC (DETAIL) 㪩㪜㪛 㪙㪣㪢 㪙㪣㪢 㧸 㧸 㪝㪬㪪㪜 㪉㪇㪘 㪩㪜㪪㪠㪪㪫㪦㪩㩷㪋㪎㪇㩷㫂㱅㩷㪈㪆㪉㪮 㪣㪠㪥㪜㩷㪚㪩㪦㪪㪪㩷㪚㪘㪧㪘㪚㪠㪫㪦㪩㩷㪈㪅㪇㱘㪝㩷㪉㪎㪌㪭 㪥㪦㪠㪪㪜㩷㪪㪬㪧㪩㪜㪪㪪㪠㪦㪥㩷㪚㪦㪠㪣 㪣㪠㪥㪜㩷㪙㪰㪧㪘㪪㪪㩷㪚㪘㪧㪘㪚㪠㪫㪦㪩 㪇㪅㪇㪇㪊㪊㱘㪝㩷㪉㪌㪇㪭 㪩㪜㪛 㨪 㧹㧟 㪞㪩㪥 㪤㪞 㪫㪟㪜㪩㪤㪘㪣 㪚㪬㪫㪄㪦㪬㪫㩷㪦㪩㪞 㨪 㨪 㪚㪦㪥㪫㪩㪦㪣㩷㪬㪥㪠㪫 㧲㧟 㨪㨪 㪙㪣㪢 㪙㪩㪥 㪞㪩㪰 㧯㧻㧹㧚 㪩㪜㪛 㧲㧞 㨪 㪙㪩㪥 㪮㪟㪫 㧾㨅㧡 㧾㨅㧝 㧺 㧻 㧾㨅㧞 㪧㪩㪠㪤㪘㪩㪰㩷㪠㪥㪫㪜㪩㪣㪦㪚㪢㩷㪩㪜㪣㪘㪰 㪦㪩㪞 㧲㧹 㪝㪘㪥㩷㪤㪦㪫㪦㪩 㪙㪣㪢 㪙㪣㪢 㪙㪣㪢 㧻㧸 㪦㪭㪜㪥㩷㪣㪘㪤㪧 㨪 㪙㪣㪬 㪙㪣㪬 㧯㧻㧹㧚 㪦㪩㪞 㪙㪣㪢 㧿㧹 㪦㪩㪞 㪪㪫㪠㪩㪩㪜㪩㩷㪤㪦㪫㪦㪩 㪙㪣㪢 㪮㪟㪫 㪙㪣㪬 㪙㪣㪬 㧲㧝 㧯㧝 㪙㪩㪥 㪙㪣㪢 㪪㪜㪚㪦㪥㪛㪘㪩㪰㩷㪠㪥㪫㪜㪩㪣㪦㪚㪢㩷㪪㪮㪠㪫㪚㪟 㪟㪬㪤㪠㪛㪠㪫㪰㩷 㩷㩷㪪㪜㪥㪪㪦㪩 㪦
KB-3300JS KB-3300JK KB-3300JW RANGE SCHEMATIC (DETAIL) 㪥 㪩㪜㪛 㪙㪣㪢 㪙㪣㪢 㪙㪣㪢 㪮㪟㪫 㧹 㪩㪜㪛 㧹 㪰㪣㪮 㪦㪩㪞 㧹 㧲㧹 㧾㨅㧢 㪰㪣㪮 㧯㧟 㪮㪟㪫 㪮㪟㪫 㪦㪭㪜㪥 㧹 㪦㪩㪞 㪫㪟㪜㪩㪤㪠㪪㪫㪦㪩 㪙㪣㪢 㪙㪩㪥 㪙㪣㪢 㧹 㪚㪦㪥㪫㪩㪦㪣㩷㪬㪥㪠㪫 㧹 㪩㪜㪛 㪛㪦㪦㪩㩷㪣㪦㪚㪢㩷 㪤㪦㪫㪦㪩 㪪㪮㪠㪫㪚㪟 㨪㨪 㨪 㨪㨪 㨪㨪 㧹 㪙㪣㪢 㪛㪦㪦㪩㩷 㪪㪮㪠㪫㪚㪟 㪚㪩㪦㪪㪪㩷㪝㪣㪦㪮㩷 㪝㪘㪥㩷㪤㪦㪫㪦㪩 㪮㪟㪫 㧾㨅㧤 㪮㪟㪫 㪛㪦㪦㪩㩷㪣㪦㪚㪢㩷 㪤㪦㪫㪦㪩 㪙㪩㪥 㧯㧣 㧸㧹 㧾㨅㧣 㪦㪭㪜㪥㩷㪣㪘㪤㪧 㧻㧸 㪦㪩㪞 㧯㧡 㪮㪟㪫 㪮㪟㪫 . 4'.
TEST PROCEDURES PROCEDURE LETTER A KB-3300JS KB-3300JK KB-3300JW 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-3300JS KB-3300JK KB-3300JW 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. KEYBOARD GLASS UNIT TEST 1. Disconnect the power supply cord, and then reconnect power supply cord. Display should show the word; “WAIT” in either one or both displays. 2.
KB-3300JS KB-3300JK KB-3300JW TEST PROCEDURES PROCEDURE LETTER COMPONENT TEST 8.Disconnect the power supply cord, and then remove covers. 9.Open the drawer and block it open. 10.Discharge high voltage capacitor. 11.Reconnect all leads removed from components during testing. 12.Re-install the covers. 13.Reconnect the power supply cord after the covers are installed. 14.Run the oven and check all function. D DEFROST TEST WARNING : The oven should be fully assembled before following procedure.
KB-3300JS KB-3300JK KB-3300JW TEST PROCEDURES PROCEDURE LETTER COMPONENT TEST 9) 10) 11) 12) 13) 14) 15) F Disconnect the power supply cord, and then remove the covers. Open the drawer and block it open. Discharge high voltage capacitor. 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.
KB-3300JS KB-3300JK KB-3300JW TEST PROCEDURES PROCEDURE LETTER COMPONENT TEST 9-2. Place the container on the center of tray in the oven cavity. 9-3. Close the door. 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-3300JS KB-3300JK KB-3300JW TEST PROCEDURES PROCEDURE LETTER G COMPONENT TEST SURFACE ELEMENT CONTROL SYSTEMS Di al Posit ion Contacts Two types of surface elements control systems are covered in this manual. 1. Standard infinite switch. 2. Dual infinite switch. OFF LO-MED HI L1 - P O X X L1 - H 1 O X X L2 - H 2 O X- C X O - open X - closed Standard infinite switch: The surface elements and standard infinite switches provide an infinite choice of heat settings for cooking.
KB-3300JS KB-3300JK KB-3300JW TEST PROCEDURES PROCEDURE LETTER COMPONENT TEST between the switch and the element are open. If the meter reads line to line voltage the element is defective. Element does not cycle: If the element does not cycle when the switch is set in a position other than high the switch is defective.
KB-3300JS KB-3300JK KB-3300JW TEST PROCEDURES PROCEDURE LETTER Both elements do not heat: COMPONENT TEST 2. With the switch turned clockwise to the high position measure the voltage drop between terminals 4 and 2. If the meter reads zero the switch is defective. If the meter reads line to line voltage, go to step 3. Remove the back panel of the backguard to expose the switch terminals. 3.
TEST PROCEDURES PROCEDURE LETTER KB-3300JS KB-3300JK KB-3300JW COMPONENT TEST Refer to the disassembly instructions found on Page 16. H 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-3300JS KB-3300JK KB-3300JW TEST PROCEDURES PROCEDURE LETTER J 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-3300JS KB-3300JK KB-3300JW TEST PROCEDURES PROCEDURE LETTER M 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-3300JS KB-3300JK KB-3300JW TOUCH CONTROL PANEL ASSEMBLY OUTLINE OF TOUCH CONTROL PANEL 10) Indicator Circuit A circuit to drive the Liquid Crystal Displays (LCD1, LCD2). The touch control section consists of the following units. (1) Keyboard unit (2) Control Unit (3) Power unit 11) 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.
KB-3300JS KB-3300JK KB-3300JW DESCRIPTION OF LSI (IC-1) The I/O signal of the LSIis detailed in the following table. Pin No. Signal I/O Description 1 AN5 IN Temperature measurement input: OVEN THERMISTOR. By inputting DC voltage corresponding to the temperature detected by the thermistor, this input is converted into temperature by the A/D converter built into the LSI. 2 AN4 IN Turminal not used. 3 AN3 OUT Door lock motor driving signal. To turn on and off shut-off relay(RY8).
KB-3300JS KB-3300JK KB-3300JW Pin No. Signal I/O 37 P17 OUT Description Bottom heater relay driving signal. To turn on and off relay(RYB). “H” level: During bottom heater relay ON. “L” level: During bottom heater relay OFF. 38 P16 OUT Turminal not used. 40 P14 OUT Door lock motor driving signal. To turn on and off relay(RY8). “H” level: During door lock motor ON. “L” level: During door lock motor OFF.
KB-3300JS KB-3300JK KB-3300JW Pin No. Signal I/O 57 P53 IN 58 P52 OUT Description To input signal which communicates the oven door open/close information to LSI. Door open "H" level signal (+5V). Door close "L" level signal (GND). Signal to sound buzzer. A: Key touch sound. B: Completion sound. C: When the oven stops so that the food can be checked in Automatic cooking mode. 0.1 sec A 2.0 sec B 1.0 sec 1.
KB-3300JS KB-3300JK KB-3300JW 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-3300JS KB-3300JK KB-3300JW IC-7 IC-8 OVEN TEMPERATURE/SELF CLEANING CONTROL CIRCUIT 33
KB-3300JS KB-3300JK KB-3300JW OVEN DOOR LOCK MOTOR CONTROL CIRCUIT 34
KB-3300JS KB-3300JK KB-3300JW OVEN DOOR LOCK MOTOR DETECTION CIRCUIT 35
KB-3300JS KB-3300JK KB-3300JW 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-3300JS KB-3300JK KB-3300JW 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-3300JS KB-3300JK KB-3300JW OVEN / MICROWAVE DRAWER DISASSEMBLY WARNING: Follow all safety precautions beginning on Page 2 before proceeding! Fig. 1 1. Before removing Control Panel, take measures to protect the Cook Top surface and keep Microwave Drawer open to prevent scratches. Control Knobs Retainers 2. Remove all Control Knobs (Fig 1). Glass Key Deco GND Deco Screw 3. Unscrew all Retainers (Fig 1). 4. Unscrew Glass Key Deco screw (1) (Fig 1). Lens 5.
KB-3300JS KB-3300JK KB-3300JW Fig. 4 10. Remove screws from Control Panel Frame (Fig 4). Control Panel Frame 11. Slide Cook Top forward to unlock from shoulder screws, then remove or reposition (Fig. 5). Fig. 5 12. Remove all screws on back panel and covers then remove side panels (Fig. 6). Fig. 6 Back Panel 13. Unhook wires from Select Switch assembly by carefully lifting back cover and leaning to gain access (Fig. 6).
KB-3300JS KB-3300JK KB-3300JW 14. Remove screws from Microwave top Air Duct and take off (Fig. 7). 15. Remove all screws from Microwave Back Plate (Fig. 7). 16. Lift Back Plate and remove carefully not to damage any wires (Fig. 7). Air Duct Back Plate NOTE: The Microwave Back Plate cannot be completely removed due to wiring. If you need to remove, you will have to unhook all wiring routed through it. At this point, you will have access to all parts of the Microwave and Oven.
KB-3300JS KB-3300JK KB-3300JW STOP SWITCH, SECONDARY INTERLOCK SWITCH AND MONITOR SWITCH REMOVAL 1. Disconnect the power supply cord. 2. Open the drawer and keep it open. 3. To discharge the high voltage capacitor, wait for 60 seconds. 4. Remove the Cook Top. 5. Remove the Cook Top Stay (right or left). 6. Remove the screw holding the latch hook to the oven flange. 7. Remove the latch hook from the oven flange. 8. Disconnect the wire leads of each switch. 9.
KB-3300JS KB-3300JK KB-3300JW DRAWER/SLIDE RAIL REMOVAL DRAWER ASSEMBLY AND CHOKE REMOVAL NOTE: 1. Disconnect the power supply cord. 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 Cook Top Stays. 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-3300JS KB-3300JK KB-3300JW OVEN DOOR REMOVAL OVEN DOOR ASSEMBLY REMOVAL 1. Disconnect the power supply cord. 2. Open the door to the fully opened position (Fig. O-1). 3. Pull the lock located on both hinge supports up and engage in the hook of the hinge levers. You may have to apply a little downward pressure on the door to pull the locks fully over the hooks (Fig. O-2). 4. Grab the door by the sides, pull the bottom of the door up and toward you to disengage the hinge supports.
KB-3300JS KB-3300JK KB-3300JW OVEN BAKE ELEMENT REMOVAL 1. 2. 3. 4. 5. 6. Disconnect the power supply cord. Refer to the disassembly instructions found on Pages 38 - 40. Disconnect the wires by removing (2) nuts from element (Fig. O-5) Remove the (2) screws holding the element from inside the oven (Fig. O-6). Pull the Element into the oven. Proceed in reverse to reinstall the Bake Element. Fig. O-5 Fig. O-6 OVEN BROIL ELEMENT REMOVAL 1. 2. 3. 4. 5. 6. Disconnect the power supply cord.
KB-3300JS KB-3300JK KB-3300JW BLOWER MOTOR REMOVAL 1. 2. 3. 4. 5. 6. 7. Disconnect the power supply cord. Refer to the disassembly instructions found on Pages 38 - 40. Unhook all wiring from Blower Motor (Fig. O-11) Remove tape from Thermistor rear hole. Remove the (2) screws holding the Blower Motor to the Rear Plate. The Blower Motor is now free. Proceed in reverse to reinstall the Blower Motor. Fig. O-11 LOCK MOTOR REMOVAL 1. 2. 3. 4. 5. 6. 7. Disconnect the power supply cord.
KB-3300JS KB-3300JK KB-3300JW COOK TOP RADIANT HEATERS/HOT SURFACE INDICATOR REMOVAL 1. Disconnect the power supply cord. 2. Refer to the disassembly instructions found on Pages 38 - 40. 3. After Cook Top Assembly is free, turn upside down (glass side down) on a protective surface to prevent scratching (Fig. O-13). 4. Remove the (10) screws from Bottom Plate and place to the side. 5. Remove Heater Protect Cover (Fig. O-14). 6. Remove necessary spring strap from Radiant Element. 7.
47 WHT BLK WHT H1(RR) H1(LF) H1(LR) WHT w/BRN STRIPE or BRN H2(LF) WHT WHT 4a(RF) WHT w/YLW STRIPE or YLW RED 4 (RF) H2(RR) WHT L2 WHT w/BRN STRIPE or BRN BLK L1 2 (RF) H2(LR) VLR-12V 1 2 3 4 5 6 7 8 9 10 11 12 (TO COOKTOP HARNESS) L1 (RR) ORG L2 (RR) RED L1 (LR) H1 (RR) BLK WHT w/YLW STRIPE P (RR) RED or YLW L2 (LR) BLK WHT H2 (RR) YLW P BLK P2 (RF) RED P1 (RF) YLW L2 RED PILOT LIGHT LEFT YLW GRN YLW S2 (RF) S1 (RF) INFINITE SWITCHES (LEFT SIDE) P (
VLP-12V L1 L2 4 (RF) 4a(RF) H1(RR) H1(LF) H1(LR) H2(RF) H2(RR) H2(LF) H2(LR) BLK W HT RED WHT WH T BLK WH T BRN YLW W HT BRN 1 2 3 4 5 6 7 8 9 10 11 12 (TO CONTROL HARNESS) WHT L2 BLU YLW LF BLK SURFACE LAMPS RF BRN LR RR 48 2b BLU BRN 2a YLW YLW BLK BLU WHT P1 P1B RED YLW 2a 2b 1 ZONE LEFT FRONT (LF) SMALL 1b BLU YLW 1b 2 ZONE RIGHT FRONT (RF) LARGE BLK YLW WHT P1A WHT YLW BLK BLU 2b BLU BLK 2b YLW 90 2a BRN 2a 1 ZONE LEFT REAR (LR) LARGE 1b YLW BLK P1 1 ZONE
2 WHT STOP SW (COM.) WHT EX GRN 1 GR N (N.O.) EX EX ORG OVEN THERMAL CUT-OUT RED ORG WHT BLU GRY BR N (N.O.) 2ND. SW EX BLK BR N (COM.) (COM.) (N.C.) EX BLK RED MONITOR SW ORG EX BRN EX 1 GRY ORG TO CPU BLU BLU 2 3 (JST VHR-7N) CN-C 4 EX RED 5 6 EX ORG (JST XMR-02V) BLK 1 GRN EX 7 EX BR N OVEN LAMP YLW (SOURSE) BLK BLK RED 3 6 5 4 (JST VHR-7N) CN-E 2 7 1 2 3 EX EX RY-3 BRN (N.O.) BLK (COM.) EX EX ORG RY-4 EX RED EX (N.O.) ORG BLK (N.O.
(JST XAP-15V-1) TO PWB WHT GRY GRY GRY GRY GRY GRY GRY GRY GRY GRY GRY GRY GRY GRY 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 (JST XMP-02V) UL TAPE (JST XMP-07V) TO OVEN HARNESS 6 7 6 LOCK MOTOR SW (N.O.) 7 LOCK MOTOR SW (COM) STOP SW (N.O.) DOOR SW (COM) DOOR SW (N.O.) TO CPU (JST XAP-12V-1) THERMISTOR THERMISTOR 1 2 3 4 5 6 7 (JST XMP-07V) TO OVEN HARNESS ORG ORG TO DRAWER HARNESS RE D LOCK MOTOR SW (N.O.) LOCK MOTOR SW (COM) BR N LOCK MOTOR SW (N.C.
TERMINAL RED (RIGHT) (L2) BLK NO.07 NO.
B LK (COM.) (N.O.) RED OVEN LAMP EX ORG (JST VLR-02V) 1 EX WH T WH T 2 RE D RE D LOCK MOTOR B RN RED WHT RED TOP HEATER RED RED BOTTOM HEATER WH T 1 EX (N.O.) RED 2 LOCK MOTOR SWITCH (N.C.) B RN UL TAPE (MOLEX 5559-02P) THERMISTOR ORG O RG TO DRAWER HARNESS (COM) YLW RED RED (CENTER) (RIGHT) (L2) ( N) WH T WH T EX EX 3 2 1 UL TAPE YLW VOLTAGE SWITCH EX WHT WHT CROSS FLOW FAN MOTOR RED TERMINAL (LEFT) (L1) B LK BLK EX BLK OVEN THERMAL CUT-OUT (N.C.) BLK (N.O.
KB-3300JS KB-3300JK KB-3300JW 2 1 4 3 6 5 A A Transformer CN-A RTRNPA006WRZZ D1 -- D4 A-1 1N4002L x4 CN-H C2 + 2200uF/35V C1 0.1uF/50V H-1 A-2 B B H-2 A-6 VRS1 H-3 A-4 10G471K 60Hz B-1 R1 CN-B C 1.5K 1/4W 120V 2.5A FUSE B-3 C ZD1 RY2 HZ20-1 Q1 KTC1027 D5 POWER TRANSFORMER H-4 DU18D1-1P(M)-R-S RY1 H-5 D6 OL,SM (DRAWER COM.) R2 H-6 DU18D1-1P(M)-R 150 1W RY3 D7 D (OVEN COM.) D R3 H-7 DU18D1-1P(M)-R D8 RY4 TOP H.
K-8 K-9 K10 K11 K12 TOP.H(RY4) D.FM(RY5) O.FM(RY6) O.OL(RY7) O.LM(RY8) K14 K15 HEATER COMMON DOOR (RY8) LOCK MOTOR K13 K-7 O.COM(RY3) BOTTOM HEATER RELAY K-6 K-5 M-3 M-2 M-1 K-4 M-6 M-7 M-5 M-4 F-1 F-2 F-3 D.COM(RY1) COM DRAWER DOOR SW. (CLOSE) (RY2) MICRO OVEN DOOR SW.
KB-3300JS KB-3300JK KB-3300JW 2 1 4 3 5 6 B B 1 6 CNJ CNE ZZRD448AFBWPQ 7 1 D16 D17 D15 A S047081 A 1 C C2 D14 RY10 2 C 6 D18 5 1 D2 D1 D3 C1 D4 D CNH D7 RY3 R3 DIP FUSE 2.5A D VRS1 15 RY9 ZD1 D13 R1 FA844 CND RY11 CNA 1 CNB 3 E 1 D8 D10 1 R4 R2 C CNC E E D11 Q1 D12 7 B RY7 RY8 RY4 RY1 D9 D5 RY6 RY5 F 3 F RY2 D6 G G H H Figure S-4.
R8 2 B C E C3 CNK 15 1 CNL 9 LD10 1 CNF 3 4 CF1 1 8 9 CNX 2 1 CNM 14 5 9 1 CNN CNY 8 2 LCD1 CF2 6 5 3 4 D 3 4 56 R40 Figure S-5.
1 2 Self Clean E Oven Light Delay Start 3 57 8 0 (On) 7 Control Lock Cooktop warm 5 4 START Minute Plus Sensor Popcorn MicroWarm Stop Clear Poer Level Timer Clock Setup Custom Help 9 6 Sensor Cook Reheat Sensor Reheat Defrost 3 4 F 4 Figure S-5.
KB-3300JS KB-3300JK KB-3300JW CONTROL PANEL PARTS LIST ∆” may cause undue microwave exposure. Note: The parts marked “∆ The parts marked “*” are used in voltage more than 250V. REF. NO. 1- 1 1- 2 1- 3 1- 4 1- 5 1- 6 1- 7 1- 8 1- 9 1-10 1-11 1-12 1-13 1-13 1-14 1-15 1-15 1-16 1-16 1-16 1-17 1-17 1-18 1-18 1-19 1-19 1-20 1-20 1-21 1-21 1-22 PART NO.
KB-3300JS KB-3300JK KB-3300JW 2 1 4 3 6 5 CONTROL PANEL A A 1-18 1-17 1-12 1-13 1-18 1-16 1-17 1-22 1-10 B B 1-13 1-1 1-22 1-12 1-15 C C 1-14 1-11 1-11 1-4 1-4 D D 1-11 1-4 1-11 1-5 E E 1-3 1-8 1-7 1-2 1-6 1-8 F F 1-13 1-13 1-4 1-21 1-13 1-19 1-9 G G 1-20 Actual wire harness may be different from illustration.
KB-3300JS KB-3300JK KB-3300JW COOK TOP PARTS LIST ∆” may cause undue microwave exposure. Note: The parts marked “∆ The parts marked “*” are used in voltage more than 250V. REF. NO. * * 2- 1 2- 2 2- 3 2- 4 2- 5 2- 6 2- 6 2- 7 2- 8 2- 9 2-10 2-11 2-12 2-13 2-14 2-14 2-15 2-15 PART NO.
KB-3300JS KB-3300JK KB-3300JW 2 1 A 4 3 COOK TOP 6 5 2-14 A 2-6 2-15 B B 2-2 2-4 2-3 2-5 C C 2-9 2-10 2-11 2-4 2-9 D D 2-7 E E 2-13 F F 2-12 2-8 2-13 G G COOK TOP HARNESS 2-12 2-1 H H Actual wire harness may be different from illustration.
KB-3300JS KB-3300JK KB-3300JW MICROWAVE DRAWER PARTS LIST ∆” may cause undue microwave exposure. Note: The parts marked “∆ The parts marked “*” are used in voltage more than 250V. REF. NO.
KB-3300JS KB-3300JK KB-3300JW 2 1 4 3 MICROWAVE DRAWER 6 5 MICROWAVE DRAWER HARNESSES A 3-47 3-55 A 3-14 3-28 Actual wire harness may be different from illustration.
KB-3300JS KB-3300JK KB-3300JW OVEN PARTS LIST ∆” may cause undue microwave exposure. Note: The parts marked “∆ The parts marked “*” are used in voltage more than 250V. REF. NO. 4- 1 4- 2 4- 3 4- 4 4- 5 4- 6 4- 7 4- 8 4- 9 4-10 4-11 4-12 4-13 4-14 4-15 4-16 4-17 4-18 4-19 4-20 4-21 4-22 4-23 4-24 4-25 4-26 4-27 4-28 4-29 4-30 4-31 4-32 4-33 4-34 4-35 4-36 4-37 4-38 4-39 4-40 4-41 4-42 4-43 4-44 4-45 4-46 4-47 4-47 4-48 4-48 PART NO.
KB-3300JS KB-3300JK KB-3300JW 2 1 4 3 6 5 OVEN UNIT HARNESSES 4-42 4-40 A A Actual wire harness may be different from illustration.
KB-3300JS KB-3300JK KB-3300JW OVEN DOOR PARTS LIST ∆” may cause undue microwave exposure. Note: The parts marked “∆ The parts marked “*” are used in voltage more than 250V. REF. NO. 55555555- 1 1 1 2 3 3 3 4 PART NO.
KB-3300JS KB-3300JK KB-3300JW 1 2 4 3 6 5 OVEN DOOR A A 5-2 B B C C 5-1 D D E E 5-4 F F 5-4 5-3 G G 5-5 H H 1 2 4 3 67 5 6
KB-3300JS KB-3300JK KB-3300JW PACKING PARTS LIST ∆” may cause undue microwave exposure. Note: The parts marked “∆ The parts marked “*” are used in voltage more than 250V. REF. NO. 66666666666- 1 2 3 4 5 6 7 8 9 9 9 PART NO.
KB-3300JS KB-3300JK KB-3300JW PACKING PACKING CASE WOOD TOP FRAME 6-9 BACK SPLASH SUPPORT CORNERS BACK SPLASH HOLDER WOOD BOTTOM FRAME 6-3 BOILER INSERT 6-2 BOILER PAN 6-8 ANTI-TIP TEMPLATE 6-4 OPERATION MANUAL 6-5 INSTALLION MANUAL 6-7 ANTI-TIP KIT 6-6 6-1 Non-replaceable items * Not included in early models.
KB-3300JS KB-3300JK KB-3300JW COPYRIGHT © 2004 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. 2004 SHARP CORP. (4R2.00E) Printed in U.S.