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Question posted by Shatleysusie on October 31st, 2016

How Do You Take It Off Demo?

stuck on demo.

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Answer #1: Posted by Odin on October 31st, 2016 1:35 PM

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Odin

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Press Demo Mode on the option menu. For a picture, see this manual page: https://www.manualslib.com/manual/823285/Lg-42lh50.html?page=112&term=demo+mode&selected=1. If necessary, navigate backward with the back arrow (rotated caret) at the left.

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Related Samsung MW7490W Manual Pages

Service Manual - Page 1

Troubleshooting 7. Exploded Views and Parts List 8. MICROWAVE OVEN MW7490W SERVICE Manual MICROWAVE OVEN SECA CONTENTS 1. Precaution 2. Disassembly and Reassembly 5. Alignment and Adjustments 6. Specifications 3. Schematic Diagrams Operating Instructions 4. PCB Diagrams 9.

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

... manual. CENTRAL SERVICE CENTER 10. Such components are specified in this manual. Always connect a test instrument's ground lead to servicing if the oven is operative. 3. Samsung Electronics 1-1 Although the microwave oven is blown by the Interlock Monitor Switch: Replace all protective devices, including: nonmetallic control knobs and compartment covers. 8. This product complies with...

Service Manual - Page 4

...within specified limits by shading, or . 19. High Voltage Warning Do not attempt to the oven chassis. (Use a screwdriver.) 3. High voltage is disconnected. 18. Fig. 1-1. Short ...negative terminal 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. Use replacement components that are indicated ...

Service Manual - Page 5

... 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

... Power 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...

Service Manual - Page 7

... the magnetron and lamp. 2. Reconnect the leads correctly and firmly. Remove tow screws from hole of High Voltage Transformer 1. V. Remove the mounting bolts. 4. Remove the oven lamp by pulling out from the back panel of which are contained in good condition. Trans 4-2 Replacement of air cover. Remove the air cover. 3. NOTE2...

Service Manual - Page 9

... installation and adjustment so as the control circuit board, blower motor or high voltage transformer is not mounted properly, microwave energy may leak from the space between the inner door surface and oven front surface. When the above three switches operate properly, check if any other part such as to the drive...

Service Manual - Page 11

... 1. 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 Terminals Filament... 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

...located on the PCB Ass'y. For continued protection against radiation hazard, replace parts in the oven. After repair and adjustment, be sure to the latch body is completed. Once the ...interlock monitor switch (replace all interlock switches and the interlock monitor switch. 1. Operate the microwave oven with a water load in accordance with the meter set at the highest resistance scale, ...

Service Manual - Page 13

... PERSONNEL SHOULD NOT ALLOW EXPOSURE TO MICROWAVE RADIATION FROM MICROWAVE GENERATOR OR OTHER PARTS CONDUCTING MICROWAVE ENERGY. Make all temperature and time tests with the thermometer and measure the temperature ("T2"). 5. Set the oven to 10.5˚C at 'HIGH'. The output power is obtained by the following formula; 4.187 x 1000 x ∆T+0.55xMcx(T2-T0...

Service Manual - Page 14

... the center of the oven. 3. this manual notift that the probe end at the highest power level. 4. Place the spacer cone of the probe on the grip of the handle, otherwise a false reading may cause damage to the probe. 4) Follow the recommendation of the manufacturer of the microwave energy survey meter. 5-12...

Service Manual - Page 15

...and latch switches. 6. No display and no operation at all . No display and no microwave oscillation. (No heat while oven lamp and fan motor turn on.) CAUSE CORRECTIONS 1. Check Ass'y PCB when LVT is ...ANY PART OF THE CIRCUIT OR THE CONTROL CIRCUIT BOARD, SINCE STATIC DISCHARGE MAY DAMAGE IT. Oven does not accept key input (Program) Timer starts countdown but no operation at the same ...

Service Manual - Page 16

... wiring of door sensing switch Defective Ass'y PCB 1. CORRECTIONS Adjust door and latch switches. Wrap thinner parts of microwave due to the plugged in power source voltage. 2. Fan motor turns on when plugged in Oven does not operate and return to its characteristics. Decrease in mode. Shorted H.V.Diode 1. Ceramic ware trimmed with...

Service Manual - Page 18

...,- 1 M22 DE71-60449A COVER-MGT PP(TB53),25G,110.5X115,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 120V60HZ,-,L1150,CSA,MW5592W/XAC 1 M26 DE61-50574A...

Service Manual - Page 19

... 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 MW7490W,WHT,3RD-1.3CU.FT,NEWGUARD 1 C 7 DE64-00044A WINDOW-COVER HIDDEN ABS(HR0370U),BLK,MW4390W,LCD-N/G ...

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