Viking Designer DMOR200SS Service Manual Download Page 32

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DMOR200SS

22. Remove the key fixing plate from the control panel.
23. Remove the key unit from the key fixing plate.
24. Now, the key unit is free

NOTES FOR KEY UNIT REPLACEMENT
.  Do not reuse the torn key unit because the performance 

of the adhesive becomes weak.

2.  Before  attaching  a  new  key  unit,  wipe  off  remaining 

adhesive on the key fixing plate surfaces completely with 
a soft cloth soaked in alcohol.

3.  When attaching the key unit to the key fixing plate, adjust 

the upper edge and right edge of the key unit to the correct 
position of  key fixing plate. See key unit location.

4.  Stick the key unit firmly to the key fixing plate by rubbing 

with soft cloth not to scratch.

Key unit location

Key unit

Key
fixing plate

DOORSENSINGSWITCH,SECONDARYINTERLOCKSWITCH,THIRDDOORANDMONITORSWITCHREMOVAL

1. Disconnect the power supply cord and remove the oven

from wall and remove outer case. (Refer to procedure of
"Removal of Oven from Wall" and "Outer case Removal")

2. Open the door and block it open.
3. Discharge high voltage capacitor.
4. Remove the control panel assembly, referring to the

procedure of "CONTROL PANEL ASSEMBLY ,
CONTROL UNIT AND KEY UNIT REMOVAL".

5. Remove the two (2) screws holding the latch hook to the

oven cavity front flange.

6. Remove the latch hook from the oven cavity front flange.
7. Disconnect the wire leads of each switch.
8. Remove each switch from the latch hook by pushing the

one (1) stopper tub holding each switch.

9. Now, each switch is free.

Re-install
1. Re-install each switch in its place. The secondary

interlock switch is in the lower position, door sensing
switch is in the upper position, the third door switch is
in the upper vertical position and the monitor switch is
in the middle position.

2. Re-connect wire leads to each switch. Refer to pictorial

diagram.

3. Secure the latch hook (with two (2) mounting screws) to

oven cavity front flange.

4. Make sure that the monitor switch is operating properly

and check continuity of the monitor circuit.

Refer to

chapter "Test Procedure" and "Adjustment procedure".

1. Disconnect the power supply cord and remove the oven

from wall and remove outer case. (Refer to procedure of

"Removal of Oven from Wall" and "Outer case Removal")

2. Open the door and block it open.

3. Discharge high voltage capacitor.

4. Remove  the  control  panel  assembly,  referring  to  the

procedure  of  "CONTROL  PANEL  ASSEMBLY  ,

CONTROL UNIT AND KEY UNIT REMOVAL".

If the door sensing switch, secondary interlock switch and

monitor  switch  do  not  operate  properly  due  to  a

misadjustment, the following adjustment should be made.

5. Loosen the two (2) screws holding latch hook to the oven

cavity front flange.

6. With door closed, adjust latch hook by moving it back

and forth, and up and down. In and out play of the door

allowed by the upper and lower position of the latch hook

should be less than 0.5mm. The vertical position of the

latch hook should be adjusted so that the door sensing

switch, secondary interlock switch and third door are

activated with the door closed. The horizontal position

of the latch hook should be adjusted so that the monitor

switch is activated with the door closed.

7. Secure the screws with washers firmly.

8. Check all of the switches operation. If any switch has not

activated with the door closed, loosen screw and adjust

the latch hook position.

After adjustment, check the following.

1. In and out play of door remains less than 0.5mm when

DOOR  SENSING  SWITCH,  SECONDARY  INTERLOCK  SWITCH,  THIRD  DOOR  SWITCH  AND  MONITOR  SWITCH  ADJUSTMENT

in the latched position. First check upper position of latch

hook, pushing and pulling upper portion of door toward

the oven face. Then check lower portion of the latch

hook,  pushing  and  pulling  lower  portion  of  the  door

toward the oven face. Both results (play in the door)

should be less than 0.5mm.

2. The door sensing switch, third door switch and secondary

interlock switch interrupt the circuit before the door can

be opened.

3. Monitor switch contacts close when door is opened.

4.  The  contact  of  door  sensing  switch  and  secondary

interlock switch open within 1.2mm gap between right

side of cavity face plate and door when door is open.

5. Re-install outer case and check for microwave leakage

around door with an approved microwave survey meter.

(Refer to Microwave Measurement Procedure.)

Figure C-1. Latch Switch Adjustments

Door Sensing 

Switch

Monitor Switch

Switch Lever

Secondary

Switch

Latch Heads

Door

Third door 

Switch

Summary of Contents for Designer DMOR200SS

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 36: ...43 DMOR200SS NOTES...

Page 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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