Samsung MW7490W Support Question
Samsung MW7490W Support Question
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Question posted by bubbayumz1972 on September 20th, 2012
Runs Clock And Timer Work But Won't Heat Up And Glass At Bottom Won't Spin
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Related Samsung MW7490W Manual Pages
Service Manual - Page 1
Operating Instructions 4. Exploded Views and Parts List 8. Precaution 2. Schematic Diagrams Alignment and Adjustments 6. Specifications 3. Troubleshooting 7. PCB Diagrams 9. Disassembly and Reassembly 5. MICROWAVE OVEN
MW7490W
SERVICE Manual
MICROWAVE OVEN
SECA
CONTENTS
1.
Service Manual - Page 2
... connections.
(d) Any defective or misadjusted components in the interlock, monitor, door seal, and microwave generation 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...
Service Manual - Page 3
Although the microwave oven is completely safe during ordinary use, repair work can be performed to prior to servicing if the oven is described elsewhere in this manual. If the oven operates with the procedures described in protective devices are correctly installed.
15. Check all of these special safety precautions. When reinstalling the chassis and its...
Service Manual - Page 4
High Voltage Warning Do not attempt to the oven chassis. (Use a screwdriver.)
3. High voltage is disconnected.
18. Discharging the High Voltage ...the specified limits, check each of the high-voltage capacitor to measure any components or wiring, always unplug the oven and discharge the high voltage capacitor (See Figure 1-1)
2.
High voltage is present during any cook cycle. The...
Service Manual - Page 5
2. Specifications
2-1 Table of Specifications
ITEM TIMER POWER SOURCE POWER CONSUMPTION OUTPUT POWER
MODEL
OPERATING FREQUENCY MAGNETRON COOLING METHOD OUTSIDE DIMENSIONS NET WEIGHT SHIPPING WEIGHT
MW7490W
99 MINUTES 99 SECONDS 120V/60HZ, AC MICROWAVE : 1,450W FROM 100W TO 1000W (10 LEVEL POWER) (IEC-705 TEST PROCEDURE) 2,450MHz OM75PH(31)ESS COOLING FAN MOTOR 217/8(W) x 125...
Service Manual - Page 6
... Level Selection Button
12 45 78 0 Power Level
3 6 9
More/Less
Clock Button Pause/Canel Button
Clock
Pause Cancel
3-2 Features & External Views
Kitchen Timer
Start
MW7490W
Door Ventilation Holes
Light
Number Key Button More/Less Button Kitchen Timer Button Start Button
Safety Interlock Holes
Door Latches
Glass Tray
Guide Roller
Control Panel Open Door Push Button
313mm...
Service Manual - Page 7
... that its antenna does not hit any adjacent parts, or it may be sure to the
wave guide. 4. Discharge the high voltage capacitor. 2.
Remove the oven lamp by pulling out from the magnetron and lamp.
2. V. Trans
4-2 Replacement of fan
motor assembly. 6. Take out the magnetron very carefully. 5. V. Take out the fan...
Service Manual - Page 9
Take out the glass tray and the guide roller from the drive motor. 5. Turn the oven upside down to the cavity. 6. Remove the drive motor ... the drive motor. 3. Disconnect all the leads to prevent an excessive microwave leakage.
1. Connect all the lead wires from the cavity.
2. Disconnect the oven from base plate by the operation of interlock monitor switch failure, replace the...
Service Manual - Page 10
...
1. When reconnecting the FPC connector, make sure that the holes on the connector are properly engaged with the hooks on the Plastic Fastener. If repair work is attached to ground any problems (shorted contacts or uneven surface) can be broken. Therefore, applying hot air such as its mounting tabs will be...
Service Manual - Page 11
... Normal resistance readings are as follows:
MODEL
Secondary Filament Primary
(Room temperature = 20˚C)
MW7490W
88.0 Ω ± 10% Shows Continuity 0.32Ω ± 10%
Primary ...voltage transformer is present at the high voltage terminals during any oven components or wiring, always unplug the oven from the circuit by disconnecting its power source and discharge ...
Service Manual - Page 12
...
5-5 High Voltage Diode
1. The resistance of Primary switch and Monitor switch to the oven assembly, adjust the Latch Body by following the components test procedures.
5. When mounting ...Door Open
∞ 0 ∞
Door Closed
0 ∞ 0
5-2
Samsung Electronics
Operate the microwave oven with 6V, 9V or higher voltage batteries should read the resistance. Set the power level set at...
Service Manual - Page 13
... and Adjustments
CAUTION MICROWAVE RADIATION
PERSONNEL SHOULD NOT ALLOW EXPOSURE TO MICROWAVE RADIATION FROM MICROWAVE GENERATOR OR OTHER PARTS CONDUCTING MICROWAVE ENERGY. Set the oven to 10.5˚C... 1-liter cylindrical borosilicate glass vessel (Outside diameter 190 mm) * One glass thermometer with the thermometer and measure the temperature ("T2"). 5. When heating is obtained by a...
Service Manual - Page 14
...2. this may
cause damage to the probe. 4) Follow the recommendation of the manufacturer of the microwave energy survey meter.
5-12 Leakage Measuring Procedure
5-12-1 Record keeping and notification after repair or ...of Microwave Energy Leakage
1) Pour 275±15cc of 20±5˚C(68±9˚F) water in a beaker which
is graduated to 600cc, and place the beaker in the center of the oven....
Service Manual - Page 15
...Oven does not accept key input (Program)
Timer...VOLTAGE CAPACITOR. 4. ALWAYS TOUCH GROUND WHILE WORKING ON IT TO DISCHARGE ANY STATIC CHARGE BUILT UP.
6-1 Electrical Mulifunction
SYMPTOM Oven is OK. Fuse is dead. No ...Transformer H.V.Capacitor H.V.Diode Magnetron 4.
No display and no microwave oscillation. (No heat while oven lamp and fan motor turn on.)
CAUSE
CORRECTIONS
1. Defective...
Service Manual - Page 16
... wire of fan motor. Inform the customer.
Loud buzzing noise can program but timer does not start.
Turntable motor does not rotate. Ceramic ware trimmed with metallic ...S/W
1. Open or loose wiring of microwave due to operate. Uneven intensity of primary interlock switch
2.
Troubleshooting
6-2 Electrical Mulifunction(continued)
SYMPTOM Oven lamp and fan motor turn on when...
Service Manual - Page 18
...,T0.8,W31,L125.8
1
M15 DE59-40001A DIODE-H.V
HVR-1X-32B-12
1
M16 DE74-20002A TRAY-COOKING
GLASS,T6,PI360,1.2CUFT,NEG
1
M17 DE97-00009A ASSY-GUIDE ROLLER MW7896W,D16.5,BLK,XARAC
1
M18 DE67-60082A....5X115,GE-WHT,3RD-1.3 MW789 1
M23 DE93-30375R ASSY CONTROL-BOX MW7490W,WHT,3RD-1.3CU.FT,LCD2
1
M24 DE92-40176G ASSY DOOR
MW7490W,WHT,3RD-1.3CU.FT,NEW GUARD
1
M25 DE39-20037H ASSY POWER CORD...
Service Manual - Page 19
...
Specification
Q'ty Remarks
C 1 DE66-20010A BUTTON-PUSH
ABS(VH-080),WHT,17.6G,MW4370W,
1
C 2 DE61-70076A SPRING-BUTTON
HSWR,PI0.6
1
C 3
DE34-10207T SWITCH-MEMBRANE
PET,MW7490W/XAC,-,-,-,-,-,3RD-1.3
1
C 4 DE72-70162A CONTROL-PANEL
ABS,250G,T2.5
1
C 5 RA-W3LCD2-01 ASSY PCB PARTS
-
1
C 6
DE93-30405J ASSY CONTROL-PANEL...
Samsung Knowledge Base Results
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General Support
... clock that provides time and energy efficiency. 20L Grill The SAMSUNG microwave oven has a cavity of 20L and segment is called grill. General Capacity Size (cu. Stylish Design The SAMSUNG microwave has a stylish design with membrane panel and sheath heater, provides you a better cooking performance. Fish 4. Accessories Round rack. ft.) 0.7cu.ft./20 Liter Heat... -
General Support
... __ Require SSL for sending Advanced Server Settings Require SSL Network Connection: The Internet, Work Setup is complete. To download e-mail, click Finish Automatic Send/Receive: Every...Message E-mail View Timers Last call 7 File name Default options Speed Dial 1 Voicemail Run Task Manager A Iuaconsole B Speed Dial C Stopwatch D World Clock E My... -
General Support
... UTR Plus™ Biosleep works with easy filters The grill... 2.46 1,950 Air Cleaning System Anti Bacteria Filter Operating Mode Temperature Control Timer (on the environment, it is 30% lighter than reciprocating compressors. UTR plus... longer time. Plus the filters can quickly cool even in the heat of your electricity bills! Bio Sleep - 3 stage temperature control ...running all night.
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