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6

R - 4 1 9 C K

 SENSOR COOKING CONDITION

Using the SENSOR  function, food is cooked without figuring
time, power level or quantity.  When the oven senses enough
steam from the food, it relays the information to its
microprocessor which will calculate the remaining cooking
time and power level needed for best results.  When the food
is cooked, water vapor is developed. The sensor "senses"
the vapour and its resistance increase gradually.  When the
resistance reaches the value set according to the menu,
supplementary cooking is started.
The time of supplementary cooking is determined by experi-
ment with each food category and inputted into the LSI.  An
example of how sensor works: (Potatoes)

1. Potatoes at room  temperature. Vapor is emitted very

slowly.

 2.Heat Potatoes. Moisture and humidity is emitted very

rapidly.  You can smell the aroma as it cooks.

 3.Sensor detects moisture and humidity and calculates

cooking time and variable power.

Cooking Sequence.

1. Touch one of the SENSOR pads.

NOTE:  The oven should not be operated on sensor

 immediately  after plugging in the unit.  Wait two
 minutes before cooking on SENSOR.

2. The coil of shut-off relay (RY-1) is energized, the

turntable motor are turned on, 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.

NOTE:  During this first stage, do not open the door or touch

STOP/CLEAR pad.

4. When the sensor detects the vapor emitted from the

food, the display switches over to the remaining cooking
time and the timer counts down to zero.
At this time, the door may be opened to stir, turn or
season food.

5. When the timer reaches zero, an audible signal sounds.

The shut-off relay and cook relay are de-energized and
the power transformer, oven lamp, etc. are turned off.

6. Opening the door or  touching the STOP/CLEAR pad,

the time of the day will reappear on the display and the
oven will revert to an OFF condition. When the timer
reaches zero, an audible signal sounds.

OPERATION

DESCRIPTION OF OPERATING SEQUENCE

Summary of Contents for R-419CK

Page 1: ...FRONT COVER WARNING TO SERVICE PERSONNEL 1 MICROWAVE MEASUREMENT PROCEDURE 2 FOREWORD AND WARNING 3 PRODUCT SPECIFICATIONS 4 GENERAL INFORMATION 5 OPERATION 6 TEST PROCEDURE 8 PICTORIAL DIAGRAM 11 LSI UNIT CIRCUIT 12 PARTS LIST 13 PACKING AND ACCESSORIES 17 S100M140R419E R 419CK MICROWAVE OVEN MODEL SUPPLEMENTAL SERVICE MANUAL SHARP ELECTRONCS CORPORATION This document has been published to be use...

Page 2: ... 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 Microwa...

Page 3: ...or 4 Disconnect the leads to the primary of the power transformer 5 Ensure that the leads remain isolated from other components and oven chassis by using insulation tape 6 After that procedure reconnect the power supply cord When the testing is completed 1 Disconnect the power supply cord and then remove outer case 2 Open the door and block it open 3 Discharge high voltage capacitor 4 Reconnect th...

Page 4: ...enter of the oven cavity The water container shall be a low form of 600 ml 20 oz beaker with an inside diameter of approx 8 5 cm 3 1 2 in and made of an electrically nonconductive material such as glass or plastic The placing of this standard load in the oven is important not only to protect the oven but also to insure that any leakage is measured accurately 4 Set the cooking control on Full Power...

Page 5: ...ive C The door packing is not damaged D The door is not deformed or warped E There is no other visible damage with the oven Servicing and repair work must be carried out only by trained service personnel DANGER Certaininitialpartsareintentionallynotgroundedandpresent a risk of electrical shock only during servicing Service personnel Do not contact the following parts while the appliance is energiz...

Page 6: ...ads Power Level pad Timer Clock pad Stop Clear pad START pad Oven Cavity Light Yes Safety Standard UL Listed FCC Authorized DHHS Rules CFR Title 21 Chapter 1 Subchapter J SPECIFICATION GENERAL INFORMATION 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 El...

Page 7: ...OR RE MOVE THE ROUND GROUNDING PRONG FROM THIS PLUG OVEN DIAGRAM 1 One touch door open button Push to open door 2 Door latches The oven will not operate unless the door is securely closed 3 Removable turntable support 4 Removable turntable The turntable will rotate clockwise or counterclockwise 5 Oven lamp It will light when oven is operating or door is opened 6 Oven door with see through window 7...

Page 8: ...he oven should not be operated on sensor immediately after plugging in the unit Wait two minutes before cooking on SENSOR 2 The coil of shut off relay RY 1 is energized the turntablemotorareturnedon butthepowertransformer is not turned on 3 After about 16 seconds the cook relay RY 2 is energized The power transformer is turned on microwaveenergyisproducedandfirststageisstarted The 16 seconds is th...

Page 9: ...2 GRN POWER TRANSFORMER MONITOR FUSE 20A MAGNETRON TEMP FUSE CAPACITOR 1 0µF AC 2300V AH SENSOR SCHEMATIC 3 VARIABLE COOKING CONTROL HIGH 2 COOKING TIME PROGRAMMED 1 DOOR CLOSED NOTE CONDITION OF OVEN 4 START PAD TOUCHED 120V AC 60 Hz OVEN LAMP TURN TABLE MOTOR FAN MOTOR MONITOR SWITCH H V RECTIFIER MAGNETRON SECONDARY INTERLOCK SWITCH TTM OL FM MONITOR FUSE 20A CAVITY TEMP FUSE MAGNETRON TEMP FUS...

Page 10: ...ood disconnect the flat ribbon cable that connects the key unit to the control unit and make sure the door sensing switch is closed either close the door or short the door sensing switch connecter Use the Key unit matrix indicated on the control panel schematic and place a jumper wire between the pins that correspond to the STOP CLEAR pad making momentary contact If the control unitrespondsbyclear...

Page 11: ...llilitres 7 2 oz of tap water in 1000 millilitres measuring cup 3 Place the container on the center of tray in the oven cavity 4 Close the door 5 Touch REHEAT pad once Now the oven is in the sensor cooking condition and REHEAT SENSOR will appear in the display 6 The oven will operate for the first 16 seconds without generating microwave energy NOTE ERROR will appear if the door is opened or STOP C...

Page 12: ...ger of select switch for more than 3 seconds This condition is same as judgement by AH sensor 9 4 After approximately 3 seconds the display shows xx xx which is remaining cooking time and the display count down If the above is not the case the control unit is probably defective If the above is proper the AH sensor is probably defective 10 Disconnect the power supply cord and then remove outer case...

Page 13: ...socket POWER TRANSFORMER COM NO NOTE The neutral WHT GRY wire must be connected to the terminal with N mark on the power supply cord RED WHT BRN RED WHT WHT ORG WHT RED BLK RED BLU PNK GRN GRN to Oven cavity WHT WHT RED BLK WHT WHT BLUE MARK WHT RED WHT CAVITY TEMP FUSE MAGNETRON TEMP FUSE FAN MOTOR MONITOR FUSE HOLDER RED RED WHT 1 WHT GRY WHT ORG BLU GRN ORG ORG RY2 RY1 PRIMARY INTERLOCK RELAY C...

Page 14: ...12 R 4 1 9 C K 6 4 5 1 2 3 6 4 5 1 2 3 A B C D E F G H A B C D E F G H Figure S 3 CPU Unit Circuit ...

Page 15: ... FW VZB146MRE0 M 12Pin wire harness CN C 1 AG C1 RC KZA087DRE0 J Capacitor 0 1 uF 50V 1 AA C2 VCEAB31VW108M J Capacitor 1000 uF 35V 1 AF C3 RC KZA087DRE0 J Capacitor 0 1 uF 50V 1 AA C4 5 VCEAB31VW106M J Capacitor 10 uF 35V 1 AF D1 4 VHD11ES1 1 J Diode 11ES1 4 AB D5 8 VHD1SS270A 1 J Diode 1SS270ATA 4 AA Q1 2 VS2SB1238 3 J Transistor 2SB1238 2 AA Q3 VSKRC243M 3 J Transistor KRC243M 1 AB R1 VRD B12EF...

Page 16: ... 4 FROLPB025MRK0 M Turntable support 1 AN 6 5 NTNT A095WRE0 M Turntable tray 1 AN 6 6 TCAUAB037MRR0 M Monitor caution label 1 AA 6 7 TCAUAB038MRR0 M DHHS Screw caution label 1 AB 6 8 TINSEB222MRR0 M Operation manual 1 AF SCREWS NUTS AND WASHERS 7 1 LX BZA041WRE0 M Special screw 1 AA 7 2 LX CZ0052WRE0 M Special screw 3 AA 7 3 XHTSD40P12RV0 M Screw 4mm x 12mm 1 AA 7 4 LX BZ0081YBE0 M Special screw 4...

Page 17: ... E F G H OVEN AND CABINET PARTS 2 3 4 7 6 7 1 5 4 6 4 8 4 9 6 5 6 4 2 1 7 6 1 12 4 10 7 2 7 2 7 5 4 3 1 13 7 3 7 6 1 9 7 8 7 8 4 2 7 5 1 11 1 3 1 4 7 4 1 8 1 8 4 4 7 1 4 1 1 1 1 2 2 2 2 2 2 2 2 2 7 5 7 5 4 12 7 5 6 6 1 7 1 6 4 5 1 14 7 7 7 7 7 9 7 9 7 10 4 13 ...

Page 18: ...6 4 5 1 2 3 A B C D E F G H A B C D E F G H CONTROL PANEL PARTS 5 1 5 1 2 5 1 1 5 3 5 4 5 5 5 2 Actual wire harness may be different from illustration 6 3 6 2 6 1 DOOR PARTS MISCELLANEOUS 3 5 3 2 3 2 1 3 4 3 3 3 2 2 3 2 3 3 1 ...

Page 19: ...ORIES DOOR PROTECTION SHEET PLASTIC BAG PACKING CASE TOP PAD ASSEMBLY INTO THE OVEN CAVITY 6 5 TURNTABLE TRAY 6 4 TURNTABLE SUPPORT 6 8 OPERATION MANUAL TRAY PACK SPADPB038MRE0 BOTTOM PAD ASSEMBLY TRAY HOLDER Non replaceable items ...

Page 20: ...Y SHARP CORPORATION ALL RIGHTS RESERVED No part of this publication may be repro duced stored in retrieval systems or trans mitted in any form or by any means elec tronic mechanical photocopying record ing or otherwise without prior written per mission of the publisher ...

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