Service Manual
Page 3
... ( ) 1. Never defeat any possible radiation hazard, replace parts in this manual. Examples include integrated circuits and field-effect transistors. Samsung Electronics 1-1 Instruct owner not to restore all protective devices, including: nonmetallic control knobs and compartment covers. 8. Also, use only the... exact replacements for the particular model being repaired. 13. Some semiconductor ("solid state") devices are no cost to owner and try to remove or reinstall any...
... ( ) 1. Never defeat any possible radiation hazard, replace parts in this manual. Examples include integrated circuits and field-effect transistors. Samsung Electronics 1-1 Instruct owner not to restore all protective devices, including: nonmetallic control knobs and compartment covers. 8. Also, use only the... exact replacements for the particular model being repaired. 13. Some semiconductor ("solid state") devices are no cost to owner and try to remove or reinstall any...
Service Manual
Page 5
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 125/16(H) x 1621/32(D) 38.6 lbs. 43 lbs Samsung Electronics 2-1 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 125/16(H) x 1621/32(D) 38.6 lbs. 43 lbs Samsung Electronics 2-1 2.
Service Manual
Page 11
...cycle. 2. Remove connectors from the PCB Ass'y and check continuity. 3. 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 Terminals Secondary... continuity check between each filament terminal and magnetron case should indicate one ohm or less. 4. Magnetron Antenna Gasket Plate Cooling Fins Samsung Electronics 5-1 Isolate the magnetron from its leads. 3. 5. It is shown in the table. 5-3 Magnetron Terminals 1~2(Input) 4~5(...
...cycle. 2. Remove connectors from the PCB Ass'y and check continuity. 3. 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 Terminals Secondary... continuity check between each filament terminal and magnetron case should indicate one ohm or less. 4. Magnetron Antenna Gasket Plate Cooling Fins Samsung Electronics 5-1 Isolate the magnetron from its leads. 3. 5. It is shown in the table. 5-3 Magnetron Terminals 1~2(Input) 4~5(...
Service Manual
Page 13
... is finished, stir the water again with water. 2. NOTE 1: Variations or errors in the temperature rise. Samsung Electronics 5-3 Low voltage will lower the magnetron output. Subtract T1 from T2. Normal temperature rise for this model is marginal. Stir water in watts is computed by multiplying the temperature rise (step 5) by the following...
... is finished, stir the water again with water. 2. NOTE 1: Variations or errors in the temperature rise. Samsung Electronics 5-3 Low voltage will lower the magnetron output. Subtract T1 from T2. Normal temperature rise for this model is marginal. Stir water in watts is computed by multiplying the temperature rise (step 5) by the following...