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DMOR200SS

 

AH SENSOR TEST

 

      Checking the initial sensor cooking condition

WARNING : The oven should be fully assembled before following procedure.
() The oven should be plugged in at least two minutes before sensor cooking.
(2) Room temperature should not exceed 95ΩF (35ΩC).
(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  ìINSTALLATION 
INSTRUCTIONSî of the operation manual.

(4) Exhaust vents are provided on the back of the unit for proper cooling and air flow in the cavity. To 

permit adequate ventilation, be sure to install so as not to block these vents. There should be some 
space for air circulation.

(5) Be sure the exterior of the cooking container and the interior of the oven are dry. Wipe off any moisture 

with a dry cloth or paper towel.

(6) The Sensor works with food at normal storage temperature. For example, chicken pieces would be 

at refrigerator temperature and canned soup at room temperature.

(7) Avoid  using  aerosol  sprays  or  cleaning  solvents  near  the  oven  while  using  Sensor  settings. The 

sensor will detect the vapor given of by the spray and turn off before food is properly cooked.

(8) If the sensor has not detected the vapor of the food, ERROR will appear and the oven will shut off.

 

Water load cooking test
WARNING :
 The oven should be fully assembled before following procedure.
Make sure the oven has been plugged in at least two minutes before checking sensor cook operation. 
The cabinet should be installed and screws tightened.
() Fill approximately 200 milliliters (7.2 oz) of tap water in a 000 milliliter measuring cup.
(2) Place the container on the center of tray in the oven cavity.
(3) Close the door.
(4) Touch the TIMER/CLOCK once, the POWER LEVEL pad twice,  closer the door, touch the START 

pad once,  open the door touch the number pad  4  once,  closer door then touch START . Now, the 
oven is in the sensor cooking condition, and “ AH20 “, “ SENSOR “ and “ COOK “ will appear in the 
display.

(5) The oven will operate for the first 32 seconds, without generating microwave energy.

NOTE:  ERROR will appear if the door is opened or STOP/CLEAR pad is touched during first stage of 

sensor cooking.

(6) After approximately 32 seconds, microwave energy is produced.

If ERROR is displayed or the oven does not turn off, replace the AH sensor or check the control unit, 
refer to explanation below. If the oven stops after 5 minutes and ERROR is displayed, the AH sensor is 
normal. Check other parts except the AH sensor. 

TESTING METHOD FOR AH SENSOR AND/OR CONTROL UNIT

To determine if the sensor is defective, the simplest method is to replace it with a new replacement 
sensor.
() Disconnect the power supply cord, and then remove outer case.
(2) Open the door and block it open.
(3) Discharge high voltage capacitor.
(4) Remove the AH sensor.
(5) Install the new AH sensor.
(6) Reconnect all leads removed from components during testing.
(7) Re-install the outer case (cabinet).
(8) Reconnect the power supply cord after the outer case is installed.
(9) Reconnect the oven to the power supply and check the sensor cook operation as follows:

9-. Fill approximately 200 milliliters (7.2 oz) of tap water in a 000 milliliter measuring cup.
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, the START pad once,  the 

number pad  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 dose not operate properly, the problem is with the control unit, and refer to explanation 
below.

TEST PROCEDURES

 

PROCEDURE 

 

LETTER 

COMPONENT TEST

   

Содержание Designer DMOR200SS

Страница 1: ...ONNEL 3 MICROWAVE MEASUREMENT PROCEDURE 4 FOREWORD AND WARNING 5 PRODUCT SPECIFICATIONS 6 GENERAL INFORMATION 6 OPERATION 9 TROUBLESHOOTING GUIDE 13 TEST PROCEDURE 15 COMPONENT REPLACEMENT AND ADJUSTM...

Страница 2: ...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 outlin...

Страница 3: ...capacitor 4 Disconnect the leads to the primary of the power transformer 5 Ensure that these leads remain isolated from other components and oven chassis by using insulation tape 6 After that procedur...

Страница 4: ...load of 275 15 ml 9 8 oz of tap water initially at 20 5O C 68O F in the center 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...

Страница 5: ...closed B The door brackets and hinges are not defective 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 wo...

Страница 6: ...ull Power P 0 No power throughout the cooking time KEEP WARM PLUS pad POPCORN pad HOT WATER pad REHEAT pad DEFROST pads Number selection pads REHEAT pads POWER LEVEL pad TIMER CLOCK pad FRESH VEGETABL...

Страница 7: ...es door must 6 be securely closed for the oven to operate Cook and time display 7 LIGHT Hi Lo pad controls 8 interior light Press the LIGHT Hi Lo pad once for Hi Press again for Lo Press a third time...

Страница 8: ...me one touch cooking features such as ADD A MINUTE are disabled after three minutes when the oven is not used These features are automatically enabled when the door is opened and closed or STOP CLEAR...

Страница 9: ...to the stirrer motor the cooling fan motor the turntable motor and the high voltage components are de energized and the digital read out displays the time still remaining in the cook cycle when the do...

Страница 10: ...hrough the right and left sides of the oven cavity then discharged vertically at rear center top of the oven into the customer s vent system 2 HORIZONTAL VENTING The air handing is the same as VERTICA...

Страница 11: ...COM COM MONITOR SWITCH OL GRY HOOD HOOD MOTOR BLU N O HL BLK RED ORG BLK BLK GRY B5 A5 RY4 RY6 RY5 RY3 NC LOW BLK WHT HIGH B7 B9 CAPACITOR A1 A3 B1 B3 RED YLW GRY WHT GRY BLU BLU BRN RED WHT BRN WHT H...

Страница 12: ...ir This cool air is directed through the air vanes surrounding the magnetron and cools the magnetron This air is channelled through the oven cavity to remove steam and vapors given off from the heatin...

Страница 13: ...mes inoperative because of a blown monitor fuse check the monitor switch relay RY1 primary interlock relay RY2 door sensing switch secondary interlock switch and third door switch before replacing the...

Страница 14: ...oes not light in cook cycle But it does light when door is opened Fan motor does not operate Oven lamp and turntable motor operate Turntable motor does not operate Oven lamp lights and fan motor opera...

Страница 15: ...the temperature stabilizes Record the temperature of the water 2 Place the cup of water in the oven Operate oven at POWER 10 HIGH selecting more than 60 seconds cook time Allow the water to heat for...

Страница 16: ...the vent holes of the oven cavity especially the cooling fan and air guide 5 Reconnect all leads removed from components during testing 6 Reinstall the outer case cabinet 7 Reconnect the power supply...

Страница 17: ...nts during testing 6 Reinstall the outer case cabinet 7 Reconnect the power supply cord after the outer case is installed 8 Run the oven and check all functions F SECONDARY INTERLOCK SWITCH AND THIRD...

Страница 18: ...uring testing 6 Reinstall the outer case cabinet 7 Reconnect the power supply cord after the outer case is installed 8 Run the oven and check all functions J HOOD THERMAL CUT OUT TEST 1 Disconnect the...

Страница 19: ...duct R 5 Disconnect the leads to the primary of the power transformer 6 Ensure that these leads remain isolated from other components and oven chassis by using insulation tape 1 Key Unit NOTE 1 Check...

Страница 20: ...en 3 To discharge high voltage capacitor wait for 60 seconds 4 Remove the control panel assembly 5 If the display fails to clear when the STOP CLEAR pad is depressed first verify the flat ribbon cable...

Страница 21: ...TAGE CONNECTED COMPONENTS RY1 Approx 26 6V D C Oven lamp Fan motor Turntable motor RY2 COOK Approx 26 0V D C Power transformer RY3 Approx 26 6V D C Hood motor RY4 Approx 26 6V D C Hood motor RY5 Appro...

Страница 22: ...inished 1 Disconnect the power supply cord and then remove outer case Refer to procedure of HOOD EXHAUST LOUVER REMOVAL REMOVAL OF OVEN FROM WALL and OUTER CASE REMOVAL 2 Open the door and block it op...

Страница 23: ...etween source and source Open Circuit Between load and source Short Circuit Between load and source Short Circuit If incorrect readings are obtained replace the noise filter 6 Reconnect all leads remo...

Страница 24: ...K once the POWER LEVEL pad twice closer the door touch the START pad once open the door touch the number pad 4 once closer door then touch START Now the oven is in the sensor cooking condition and AH2...

Страница 25: ...seconds push plunger 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 X X X X which is the time for detect...

Страница 26: ...n in such a way as to change the resistance values in parallel with R98 R102 of IC2 Changing the resistance values results in that there is the same potential at both F 3 terminal of the absolute humi...

Страница 27: ...wing conditions exist 1 Door does not close firmly 2 Door hinge support or latch hook is damaged 3 The door gasket or seal is damaged 4 The door is bent or warped 5 There are defective parts in the do...

Страница 28: ...cabinet 10 Now the power supply cord is free CAUTION 1 Disconnect oven from power supply before removing outer case 2 Discharge the high voltage capacitor before touching any oven components or wiring...

Страница 29: ...plate the oven cavity front flange and the fan duct And remove the hood intake duct R 5 Disconnect the high voltage wire lead with high voltage rectifier from the magnetron 6 Disconnect filament lead...

Страница 30: ...EMOVAL 5 Disconnect the wire leads from the temperature fuse Magnetron 6 Remove the one 1 screw holding the temperature fuse Magnetron to the fan duct 7 Now the temperature fuse Magnetron is free COOL...

Страница 31: ...block it open 3 To discharge the high voltage capacitor wait for 60 seconds 4 Push the lever of positive lock connector 5 Pull down on the positive lock connector CAUTION When connecting the positive...

Страница 32: ...ove outer case Refer to procedure of RemovalofOvenfromWall and OutercaseRemoval 2 Open the door and block it open 3 Discharge high voltage capacitor 4 Remove the control panel assembly referring to th...

Страница 33: ...door hinge pin 3 Shut the door close the contacts of interlock switches 4 Make sure upper and lower oven hinges are inserted into the upper an lower door hinge pins 5 Make sure the door is parallel wi...

Страница 34: ...0 Now choke cover is free from door panel and door frame NOTE When carrying out any repair to the door do not bend or warp the slit choke tabs on the door panel assembly to prevent microwave leakage D...

Страница 35: ...C COM COM MONITOR SWITCH FUSE HOLDER GRN RED N O COM DOOR SENSING SWITCH RY1 N O RY1 COM RY2 N O RY2 COM HOOD FAN MOTOR 1 2 3 4 5 6 WHT RED YLW BLU BLK WHT RED YLW BLU BLK 1 2 RED GRN 1 2 3 4 5 YLW B...

Страница 36: ...43 DMOR200SS NOTES...

Страница 37: ...l system or transmitted in any form or by any means electronic mechanical photocopying recording or otherwise without prior written permission of the publisher COPYRIGHT 2009 BY VIKING ALL RIGHTS RESE...

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