TEST AND CHECKOUT PROCEDURES, AND TROUBLE SHOOTING

- CAUTIONS -

-DISCONNECT THE POWER SUPPLY CORD FROM THE WALL OUTLET WHENEVER REMOVINGING THE CABINET FROM THE UNIT. PROCEED WITH THE TESTS ONLY AFTER DISCHARGING THE HIGH VOLTAGE CAPACITOR AND REMOVING THE WIRE LEADS FROM THE PRIMARY WINDING OF THE HIGH VOLTAGE TRANSFORMER. (SEE FIGURE 24)

-ALL OPERATIONAL CHECKS WITH MICROWAVE ENERGY MUST BE DONE WITH A LOAD (1 LITER OF WATER IN CONTAINER) IN THE OVEN.

Filament

Winding

Secondary

Winding

Primary

Winding

 

 

 

 

Figure 24

A. TEST PROCEDURES

 

 

 

 

 

 

 

 

COMPONENTS

 

TEST PROCEDURES

RESULTS

 

 

 

1)

Measure the resistance: Across the

 

 

 

 

 

 

 

 

filament terminals of the magnetron

Normal reading:

 

 

 

with an ohm-meter on Rx1 scale.

Less than 1 ohm.

 

 

2)

Measure the resistance: Between

Normal reading:

MAGNETRON

 

 

each filament terminal of the

Infinite ohms.

(Wire leads are

 

 

magnetron and the chassis ground

 

 

removed)

 

 

with an ohm-mater on high test scale.

NOTE: Replace the magnetron, if the

 

 

 

 

magnetron checks and all of the

 

 

 

 

high voltage component tests are

 

 

 

 

good, but the unit still does not heat

 

 

 

 

a load.

 

 

 

 

 

 

 

 

1)

Measure the resistance:

 

 

 

 

 

With an ohm-meter on Rx1 scale.

Normal readings:

HIGH-VOLTAGE

 

 

a. Primary winding;

Approx. 0.3 to 0.5 ohm.

TRANSFORMER

 

 

b. Filament winding;

Less than 0.1 ohm.

(Wire leads are

 

 

c. Secondary winding;

Approx. 65 to 120 ohms.

removed)

 

 

 

 

 

 

 

2)

Measure the resistance:

 

 

 

 

 

With an ohm-meter on highest scale.

Normal readings:

 

 

 

a. Primary winding to ground;

Infinite ohms.

 

 

 

b. Filament winding to ground;

Infinite ohms.

 

 

 

 

 

 

NOTE: A MICROWAVE ENERGY LEAKAGE TEST MUST ALWAYS BE PERFORMED WHEN THE UNIT IS SERVICED FOR ANY REASON.

7-15

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LG Electronics LMV1625B, LMV1625W service manual Test and Checkout PROCEDURES, and Trouble Shooting, Test Procedures
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LMV1625W, LMV1625B specifications

The LG Electronics LMV1625B and LMV1625W are versatile over-the-range microwaves designed to enhance convenience and efficiency in modern kitchens. With a range of features, these models cater to the diverse needs of users while maintaining a sleek and stylish appearance.

Both variants, LMV1625B in black and LMV1625W in white, are equipped with a spacious 1.6 cubic feet capacity, which allows users to accommodate larger dishes with ease. The easy-to-use control panel is designed for user-friendliness, featuring a series of clearly labeled buttons for straightforward operation.

One of the standout features of the LMV1625B and LMV1625W is the powerful 1000 watt cooking power, which ensures that meals are cooked evenly and quickly. This is particularly beneficial for defrosting or reheating food, as it helps to minimize cooking times while maintaining flavor and texture.

The Smart Inverter technology sets these microwaves apart from traditional models. This innovative feature provides precise control over power levels, allowing users to cook food more evenly without the risk of hot spots or overcooking. The Smart Inverter also enhances the defrosting process, ensuring that food thaws uniformly, which is especially important for meats and seafood.

In terms of design, both models come with a modern, minimalist aesthetic that enhances any kitchen décor. The seamless design and stainless steel accents lend a touch of elegance, ensuring that they can blend effortlessly into various kitchen styles.

The EasyClean interior coating is another notable characteristic, as it simplifies the cleaning process. This specialized coating allows for quick and simple wiping down of the interior surfaces, making maintenance a breeze. Furthermore, the built-in LED lighting illuminates the cooking space, providing better visibility during use.

In addition to these features, the LMV1625B and LMV1625W also include a range of pre-set cooking options, allowing users to prepare popular dishes at the touch of a button. With multiple power levels and a sensor cooking option, these microwaves provide flexibility and precision in meal preparation.

Overall, the LG Electronics LMV1625B and LMV1625W over-the-range microwaves combine innovative technology, user-friendly features, and stylish design, making them a practical choice for any kitchen. Whether sautéing, steaming, or reheating, these appliances are designed to meet the needs of today's busy households.
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