Sharp AX-1200K Service Manual

Super steam oven

Hide thumbs Also See for AX-1200K:

Operation manual (43 pages)

Specifications (2 pages)

Installation instructions manual (8 pages)

Table Of Contents

Quick Links

Download this manual

TopPage

AX-1200S

PRECAUTIONS TO BE OBSERVED BEFORE AND

DURING SERVICING TO AVOID POSSIBLE EXPO-

SURE TO EXCESSIVE MICROWAVE ENERGY

CHAPTER 1. WARNING TO SERVICE PERSONNEL

CHAPTER 2. MICROWAVE MEASUREMENT PRO-

CEDURE

CHAPTER 3. FOREWORD AND WARNING

CHAPTER 4. PRECAUTIONS FOR USING LEAD-

FREE SOLDER

SERVICE MANUAL

MODELS

HEALTHY COOKING

SuperSteam

Steam

Convection

Microwave

Stop

START

Clear

Enter

In interests of user-safety the oven should be restored to its

Back

Info

original condition and only parts identical to those specified

should be used.

CONTENTS

CHAPTER 5. PRODUCT DESCRIPTION

CHAPTER 6. OPERATION

CHAPTER 7. TEST PROCEDURE

CHAPTER 8. COMPONENT REPLACEMENT AND

ADJUSTMENT PROCEDURE

CHAPTER 9. CIRCUIT DIAGRAMS

Parts List

S1901AX12PK//

SUPER STEAM OVEN

AX-1200K

AX-1200S

This document has been published to be used for

after sales service only.

The contents are subject to change without notice.

AX1200K

Table of Contents

Need help?

Do you have a question about the AX-1200K and is the answer not in the manual?

Questions and answers

Summary of Contents for Sharp AX-1200K

Page 1 TopPage AX1200K SERVICE MANUAL S1901AX12PK// SUPER STEAM OVEN AX-1200K MODELS HEALTHY COOKING HEALTHY COOKING HEALTHY COOKING AX-1200S SuperSteam SuperSteam SuperSteam Steam Steam Steam Convection Convection Convection Convection Convection Convection Microwave Microwave Microwave Stop Stop Stop START START START Clear Clear...
Page 2: Table Of Contents
CONTENTS PRECAUTIONS TO BE OBSERVED BEFORE DOOR ASSEMBLY REPLACEMENT ..8-2 AND DURING SERVICING TO AVOID POSSIBLE DOOR COVER REMOVAL ......8-2 DOOR ADJUSTMENT ........ 8-2 EXPOSURE TO EXCESSIVE MICROWAVE ENER- DOOR SENSING SWITCH, SECOND- ARY INTERLOCK SWITCH AND MONI- CHAPTER 1.
Page 3: Precautions To Be Observed Before And During Servicing To Avoid Possible Exposure To Excessive Microwave Energy
Before servicing an operative unit, perform a microwave emission check as per the Microwave Measurement Procedure outlined in this service manual. If microwave emissions level is in excess of the specified limit, contact SHARP ELECTRONICS CORPORATION immediately @1-800-237-4277. If the unit operates with the door open, service person should 1) tell the user not to operate the oven and 2) contact SHARP ELECTRONICS CORPORATION and Food and Drug Administration's Center for Devices and Radiological Health immediately.
Page 4: Warning To Service Personnel
AX1200K CHAPTER 1. AX1200K WARNING TO SERVICE PERSONNEL Service Manual The ovens contain circuitry capable of producing very high voltage and current, contact with following parts may result in a severe, possibly fatal, electrical shock. (Example) Inverter unit, Magnetron, High Voltage Harness etc.. Read the Service Manual carefully and follow all instructions.
Page 5: After Repairing
AX1200K 7. Reconnect the high voltage wire to the magnetron terminal after discharging. WARNING: Use the pliers that the portions of their handles are insulated completely to avoid an electric shock. 8. Reconnect all leads removed from components during testing. 9.
Page 6: Microwave Measurement Procedure
AX1200K CHAPTER 2. AX1200K MICROWAVE MEASUREMENT PROCEDURE Service Manual [1] Requirements: 1. Microwave leakage limit (Power density limit): The power density of microwave radiation emitted by a microwave oven should not exceed 1mW/ at any point 5cm or more from the external surface of the oven, measured prior to acquisition by a purchaser, and thereafter (through the use- ful life of the oven), 5 mW/cm at any point 5cm or more from the external surface of the oven.
Page 7: Chapter 3. Foreword And Warning
Service Manual [1] FOREWORD This Manual has been prepared to provide Sharp Electronics Corp. Service Personnel with Operation and Service Information for the SHARP SUPER-STEAM OVENS, AX-1200K, AX1200S. 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.
Page 8: Precautions For Using Lead-Free Solder
AX1200K CHAPTER 4. AX1200K PRECAUTIONS FOR USING LEAD-FREE SOLDER Service Manual 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.
Page 9: Chapter 5. Product Description
AX1200K CHAPTER 5. AX1200K PRODUCT DESCRIPTION Service Manual [1] SPECIFICATIONS ITEM DESCRIPTION 120 Volts Power Requirements 60 Hertz Single phase, 3 wire grounded 1040W / Approx. 9.0 Amperes (Microwave) Power Consumption 1500W / Approx. 12.5 Amperes (Convection) *700 W nominal of RF microwave energy (IEC Test procedure) Microwave Power Output Operating frequency 2450 MHz Convection Heater Output...
Page 10: Control Panel
AX1200K ACCESSORIES 19 Baking tray x2 For SuperSteam Convection, Convection,Steam and Descale 17 High rack function. For SuperSteam Convection, Convection and Steam. Do not use when microwave cooking. Do not use when microwave cooking. 20 Steam basket Always place on baking tray. For Steam.
Page 11: Chapter 6. Operation
AX1200K CHAPTER 6. AX1200K OPERATION Service Manual [1] Water supply/drainage schematic 1. When installing the reservoir ENGINE UNIT ASSEMBLY Water level sensor Water level unit Water supply tube to the engine as- FEED-WATER RESERVOIR sembly TUBE PUMP DEW TRAY Inserting the reservoir delivers water to the water level unit. 2.
Page 12: When Removing The Reservoir
AX1200K 3. When removing the reservoir Remained water in the tube and the engine is not discharged even with the reservoir removed. Removing the reservoir discharges remained water in the water level unit to the dew tray. 4. When operating the oven in order to discharge remained water in the engine unit assembly and tube (“Drain water”...
Page 13: On/Off Operation Of Electric Parts In Each Heating Mode
AX1200K [2] On/Off operation of electric parts in each heating mode Signal Parts Heating modes Microwave Convection Supersteam Steam Inverter unit Primary interlock relay Engine heater Convection heater Supper Steam heater Out put Fan motor (AC motor) Cooling fan motor (DC motor) Ventilation fan motor (DC motor) Sirocco fan motor (Exhaust) Convection motor...
Page 14: Chapter 7. Test Procedure
AX1200K CHAPTER 7. AX1200K TEST PROCEDURE Service Manual [1] MAGNETRON ASSEMBLY TEST 1. Disconnect the power supply cord, and then remove the outer case and the back plate assembly. 2. Open the door and block it open. 3. Wait for 60 seconds to discharge the high voltage capacitors of the inverter unit. 4.
Page 15: Monitor Switch Test
AX1200K 2. PRIMARY INTERLOCK SYSTEM 2.1. DOOR SENSING SWITCH 1. Disconnect the power supply cord, and then remove the outer case and the back plate assembly. 2. Open the door and block it open. 3. Wait for 60 seconds to discharge the high voltage capacitors of the inverter unit. 4.
Page 16: Blown Monitor Fuse Test
AX1200K 10.Reinstall the outer case and the back plate assembly. 11.Reconnect the power supply cord after the outer case and the back plate assembly are installed. 12.Run the oven and check all function. [4] BLOWN MONITOR FUSE TEST 1. Disconnect the power supply cord, and then remove the outer case and the back plate assembly. 2.
Page 17: How To Check In The Event Of An Error
AX1200K Error indication Description Condition Check timing Remarks EE01 Oven thermistor fail- Break/short-circuit 250 or more bits in As soon as heating starts of thermistor oven mode Any time during heating Short circuit Less than 5 bits in fer- Open mentation mode EE02 AH sensor failure...
Page 18 AX1200K 2) Check of tube pump performance Hole of the angle base for the motor Measure the weight of the reservoir filled with water of the tube pump unit to water level 2. Set the reservoir to the set and power ON. Start 11-minute steaming operation.
Page 19: How To Check Sensor (Oven Thermistor) Performance
AX1200K 3. How to check sensor (oven thermistor) performance Power ON the main body. Set the test mode to 03. (See How to set test mode on page 7-9) Press the START key. Does a measured value for the oven thermistor change as oven heating proceeds? Is the measured value within ±10 bits with respect to the EE01: Proceed to checking the oven thermistor for failure.
Page 20 AX1200K 6. EEO5 Engine high temperature failure Is the connectors between the engine thermistor, board and engine mounting section Connect/repair the connector(s) or replace the disconnected or short circuited? thermistor/harness. Measure the engine thermistor resistance using a tester with the thermistor connector pulled out of the board.
Page 21: Check And Remedy In The Event Of Malfunction
AX1200K [8] Check and remedy in the event of malfunction 1. List ✩ Before starting the P.W.B. unit replacement, make sure to refer to “Before replacing the Printed Wiring Board” in page 1-2. Operation Trouble Action No display Has the 15 A fuse blown? YES: Refer to Check in the event of 15 A fuse blowing.
Page 22: Check In The Event Of No Microwave Cooking
AX1200K 3. Check in the event of no microwave cooking Check of high voltage sections is very dangerous. Therefore, after the inverter boards (M and AC3) and 120 V at the primary terminal are confirmed to be satisfactory, disconnect the main power and wait for at least one (1) minute before starting the check. Check of individual components is done with the high voltage circuit wiring disconnected.
Page 23: Test Mode
AX1200K [9] TEST MODE HOW TO SET TEST MODE (Power ON/door closed state) [STOP/CLEAR] [SUPERSTEAM CONVECTION] [MICROWAVE] [OPEN DOOR] (Set the number (initial number: 04) by [ENCODER] [START] Within 1 sec. Within 1 sec. Within 1 sec. [DIRECT SETTING KEY] Test mode Description Output...
Page 24 AX1200K Test mode Description Output Display example Judgment indication details Indication Error timing Water level sensor Engine thermistor AH sensor - - 10 Just after start of steam heating Not judged yet Not judged yet Defective 00 00 Steam heating in progress Not determined yet Defective Not determined yet...
Page 25: Chapter 8. Component Replacement And Adjustment Procedure Warnings
2) Open the door and block it open. 3) Wait for 60 seconds to discharge the high voltage ca- 3) Sharp edge: Bottom plate, Oven cavity, Waveguide flange and pacitors of the inverter unit. other metallic plate.
Page 26: Back Plate Removal
AX1200K NOTE: When replacing the outer case, the 2 special Torx screws must be reinstalled in the same locations. [3] BACK PLATE REMOVAL 1. Disconnect the power supply cord. 5. Remove the two (2) screws holding the back plate to the rear angle.
Page 27: Door Sensing Switch, Secondary Interlock Switch And Monitor Switch Replacement
AX1200K 1. Loosen the screws holding the oven hinge right and the oven hinge 4. Tighten the screws holding the right oven hinge to the bottom plate. left to the bottom plate with screwdriver. Then tighten the screws holding the left oven hinge to the bottom plate.
Page 28: After Adjustment, Check The Following
AX1200K 6. With door closed, adjust the latch hook right and the latch hook left 4. Reinstall the outer case cabinet and check for microwave leakage by moving them back and forth, and up and down. In and out play around the door with an approved microwave survey meter.
Page 29: Tube Pump Assembly Removal
AX1200K CAUTION: When the water tube is removed from the engine unit, 11. Remove the one (1) screw holding the thermo mounting angle to remained water may bleed from the engine unit. the heat cover-right assembly. 8. Remove the wire harness from the heater terminal of engine unit 12.Remove the one (1) screw holding the engine unit assembly to the assembly by removing the four (4) screws.
Page 30: Magnetron Replacement
AX1200K 11.Remove the ten (10) nuts holding the convection unit to the oven 2. Remove the convection cover angle B from the convection cover. cavity assembly. (Release the tab and remove the one (1) mounting screw) 12.Now, the convection unit is free 3.
Page 31: Fan Motor (Bottom Ventilation) Removal
AX1200K 4. Disconnect the terminal from the antenna motor. NOTE: When installing, install some cut parts by adding the two (2) screws (LX-BZA171WREZ). 5. Remove the two (2) antenna motor screws and remove the antenna motor. [17] FAN MOTOR (BOTTOM VENTILATION) REMOVAL 1.
Page 32 AX1200K 1. Removal of the oven with the Exhaust duct bot- 5. Disconnect the power supply cord. 6. Remove the oven with the Exhaust duct bottom from the cabinet or wall opening. 1. Remove the four (4) screws holding the frame assembly to the cab- inet or wall.
Page 33: Exhaust Duct Upper
AX1200K 6. Remove the two (2) screws holding the Exhaust duct upper to the 9. Remove the Exhaust duct back from the oven. Exhaust duct back. 10.Remove the Exhaust duct bottom from the bottom of the oven by lifting up the oven. EXHAUST DUCT UPPER SCREW EXHAUST DUCT...
Page 34: Chapter 9. Circuit Diagrams
AX1200K CHAPTER 9. AX1200K CIRCUIT DIAGRAMS Service Manual [1] PICTORIAL DIAGRAM 1. CONTROL UNIT Temp. Sensor from Touch Control Transformer BLU/GRY WHT/BLU BRN/BRN RED/RED RED/BRN to Display Unit (WHA) 2. DISPLAY UNIT from Control Unit (12-pin connector CND ) 9 – 1...
Page 35: Main Circuit
AX1200K 3. OTHER COMPONENTS INVERTER UNIT LATCH SWITCHES N.C. BLU/BLU BLUE COM. Monitor Switch Door Sensing Switch Secondary Interlock Switch CN-A COM. Ground COM. LATCH HOOK LEFT LATCH HOOK RIGHT NOISE FILTER Power Supply Cord to Bottom Plate [2] MAIN CIRCUIT FAN MOTOR THERMAL CONV.
Page 36: Inverter Unit Circuit
AX1200K [3] INVERTER UNIT CIRCUIT T110 L110 #187 BLUE #187 D120 #250 20A 600V UX-F5B 5W/2k D110 D100 R100 UX-F5B Q110 #250 CT100 D121 A060DR R101 RD5.1ESAB1 TH111 1.1kF 1/4W 1/2W 1.2K PD100 (HIC1) CN-A 9 – 3...
Page 37: Control Unit Circuit
AX1200K [4] CONTROL UNIT CIRCUIT 9 – 4...
Page 38: Display Unit Circuit
AX1200K [5] DISPLAY UNIT CIRCUIT 9 – 5...
Page 39: Parts List
AX1200K PartsGuide PARTS LIST SUPER STEAM OVEN AX-1200K MODELS AX-1200S Parts marked "*" may cause undue microwave exposure. Parts marked " " are used in voltage more than 250V. CONTENTS OVEN PARTS ACCESSORY PARTS AND PACKING CABINET PARTS OTHER PARTS DOOR PARTS FOR AX1200K ...
Page 40: Oven Parts
AX1200K [1] OVEN PARTS 8-74 9-15 8-104 8-128 8-78 8-42 8-86 8-71 9-14 9-20 1-28 8-45 8-49 8-48 9-15 8-47 9-18 8-39 9-17 9-33 8-133 8-41 8-144 8-75 8-143 8-46 8-28-1 9-14 8-72 8-43 9-16 8-28 8-40 1-17 1-32 8-77 9-14 9-12 9-24...
Page 41 AX1200K PRICE PART PARTS CODE DESCRIPTION RANK MARK RANK [1] OVEN PARTS ELECTRIC PARTS Engine unit assembly CHET-A009WRKZ Thermistor (Engine) FH-HZA100WREZ Thermal cut out (Engine) RTHM-A144WRZZ Thermal cut out (Fan) RTHM-A116WRE0 1-10 AH Sensor FDTCTA240WRKZ 1-15 Thermistor (Oven) FH-HZA099WREZ 1-16 Turntable motor (Antenna motor) RMOTDA248WRZZ 1-17...
Page 42 AX1200K PRICE PART PARTS CODE DESCRIPTION RANK MARK RANK [1] OVEN PARTS 8-110 Duct packing PPAC-A112WREZ 8-111 Air guide sheet PGID-A087WRPZ 8-113 Joint duct packing L PPAC-A136WREZ 8-114 Joint duct packing S PPAC-A137WREZ 8-116 Intake duct sub assembly FDUC-A478WRYZ 8-117 LANGKB415WRPZ Fan mounting angle 8-121...
Page 43: Cabinet Parts
AX1200K [2] CABINET PARTS 9-34 9-34 8-98 8-112 9-35 9-37 8-65 8-66 8-31 8-30 1-34 9-36 8-67 8-54 1-20 8-62 8-63 8-95 8-95 8-29 8-136 8-94 8-135 1-14 1-11 8-58 8-61 9-48 8-115 1-18 1-31 9-24 8-19 9-32 8-79 8-120 9-44 8-69 8-68...
Page 44 AX1200K PRICE PART PARTS CODE DESCRIPTION RANK MARK RANK [2] CABINET PARTS ELECTRIC PARTS Inverter unit assembly DPWBFC587WRUZ Power supply cord FACCDA074WRE0 Control unit DPWB-A692DRKZ 1-11 Noise filter unit FPWBFB028MRK0 1-14 Transformer RTRNPA167DRZZ 1-18 Monitor fuse (15A) and monitor switch FFS-BA038WRKZ 1-20 Fan motor...
Page 45 AX1200K [3] DOOR PARTS FOR AX1200K 6-26 6-32 6-40 6-41 6-36 6-42 6-32 6-10 6-31 6-35 6-32 6-36 6-35 6-31 6-37 6-11 6-18 6-22 6-39 6-42 6-27 6-41 6-25 6-15 6-33 6-20 6-16 6-23 6-17 6-14 PRICE PART PARTS CODE DESCRIPTION RANK MARK...
Page 46 AX1200K PRICE PART PARTS CODE DESCRIPTION RANK MARK RANK [3] DOOR PARTS FOR AX1200K 6-31 Screw 3mm x 12mm XEBS730P12000 6-32 Tapping screw (4mm x 10mm) XEPS740P10000 6-33 Screw 4mm x 10mm XHTS740P10000 6-35 Tapping screw (4mm x 10mm) XETS740P10000 6-36 Screw 4mm x 16mm XUTS740P16KS0...
Page 47 AX1200K PRICE PART PARTS CODE DESCRIPTION RANK MARK RANK [4] DOOR PARTS FOR AX1200S Display unit DPWB-A691DRKZ Door assembly [AX1200S] DDORFB354WRKZ Steam button JBTN-B547WRRZ Enter button JBTN-B544WRRZ Start button JBTN-B546WRRZ Door panel assembly FDORFA461WRKZ Encoder button assembly FKNBKA224WRKZ Panel dec. Left HDECAA454WRFZ Door cover GCOVHA541WRFZ...
Page 48: Accessory Parts And Packing
AX1200K [5] ACCESSORY PARTS AND PACKING 90-1 90-8 90-12 90-7 90-10 90-15 90-20 90-6 90-9 90-14 90-4 90-12 90-16 90-13 90-2 90-18 90-11 90-17 90-3 90-5 Not replaceable items. 90-19 PRICE PART PARTS CODE DESCRIPTION RANK MARK RANK [5] ACCESSORY PARTS AND PACKING Dew tray cover GCOVPA021WRFZ Dew tray...
Page 49: Other Parts
AX1200K PRICE PART PARTS CODE DESCRIPTION RANK MARK RANK [6] OTHER PARTS 1-12 Control harness FW-VZC207WREZ 1-13 Main harness FW-VZC208WREZ 1-23 Antenna motor harness FW-VZC209WREZ 1-24 High voltage harness QW-HZA132WRZZ 8-57 Purse lock LL LHLDWA013WRE0 8-64 Purse lock L LHLDWA012WRE0...
Page 50 AX1200K INDEX PRICE PART PRICE PART PARTS CODE PARTS CODE RANK MARK RANK RANK MARK RANK LANGKB340WRPZ 1-8-51 [ C ] LANGKB344WRPZ 1-8-52 CHET-A009WRKZ 1-1-1 LANGKB346WRPZ 1-8-39 [ D ] LANGKB353WRKZ 1-8-53 DDORFB347WRKZ LANGKB358WRPZ 2-8-54 DDORFB354WRKZ LANGKB360WRPZ 1-8-40 DPWB-A691DRKZ 3-1-4 LANGKB364WRPZ 1-8-42 "...
Page 51 AX1200K PRICE PART PRICE PART PARTS CODE PARTS CODE RANK MARK RANK RANK MARK RANK PCOVPA536WRFZ 1-8-34 " 2-1-34 PCUS-A199WREZ 2-8-30 RMOT-A029WRZZ 1-1-29 PCUS-A204WREZ 2-8-65 RMOT-A033WRZZ 1-1-30 PCUS-A205WREZ 2-8-66 RMOTDA248WRZZ 1-1-16 PCUS-A206WREZ 2-8-67 " 1-1-21-1 PCUS-A208WREZ 1-8-145 RMOTEA456WRZZ 2-1-20 PCUS-A209WREZ 1-8-147 RMOTEA457WRZZ 1-1-28...
Page 52 AX1200K PRICE PART PARTS CODE RANK MARK RANK XWHUW40-08000 1-9-20 XWHUW48-15120 1-9-19 XWSUW40-10000 1-9-21...
Page 53: All Rights Reserved
EndPage COPYRIGHT © 2009 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, re- cording, or other wise, without prior written permission...

This manual is also suitable for:

Ax-1200s