Sony KV-27S42 Method of Setting the Service Adjustment Mode, White Balance Adjustments

Models: KV-27S42

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KV-27S42/27S46/27S66/29AL42/29AL42C/29AL66/ 29AL66C/29SL42/29SL42C/29SL46/29XL42M

Screen-Corner Convergence

1.Affix a permalloy assembly corresponding to the misconverged areas.

a

b

ab

a-d: screen-corner

misconvergence c

cd

d

3-3. FOCUS

1. Adjust FOCUS control for best picture.

FOCUS (FV)

SCREEN (G2)

3-4. SCREEN (G2)

1.Input a dots pattern.

2.Set the PICTURE and BRIGHTNESS controls at minimum and COLOR control at normal.

3.Adjust SBRT, GCUT, BCUT in service mode with an oscilloscope as shown below so that voltages on the red, green, and blue cathodes are 170 VDC.

170 VDC

Pedestal

Ground

4.Observe the screen and adjust SCREEN (G2) VR in FBT to obtain the faintly visible background of dot signal.

3-5. METHOD OF SETTING THE SERVICE ADJUSTMENT MODE

Service Mode Procedure

1.Standby mode (power off).

2.Display Channel 5 Sound volume + Power

on the Remote Commander (press each button within a second).

Service Adjustment Mode In

1. The CRT displays the item being adjusted.

Disp. Item

(Item) Data

SERVICE HSIZ 0

2.Press or on the Remote Commander to select the item.

3.Press or on the Remote Commander to change the data.

4.Press then to save into the memory.

Service Adjustment Mode Memory

Turn set off then on to exit service adjustment mode.

SERVICE

WRITE

 

 

 

 

 

 

 

MUTING

Green

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ENTER

 

Red

 

 

 

 

 

 

 

 

3-6. WHITE BALANCE ADJUSTMENTS

1.Input an entire white signal with burst.

2.Set to Service Adjustment Mode.

3.Set DCOL to “0”.

4.Set the PICTURE and BRIGHTNESS to minimum.

5.Adjust with SBRT if necessary.

6.Select GCUT and BCUT with and .

7.Adjust with and for the best white balance.

8.Set PICTURE and BRIGHTNESS to maximum.

9.Select GDRV and BDRV with and .

10.Adjust with and for the best white balance.

11.Reset DCOL to “1”.

12.To write into memory, press then .

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Sony KV-27S42 service manual Method of Setting the Service Adjustment Mode, White Balance Adjustments

KV-27S42 specifications

The Sony KV-27S42, KV-27S66, and KV-27S46 are notable models within Sony's acclaimed line of Trinitron televisions, which contributed significantly to the brand's reputation for delivering high-quality viewing experiences. These models are characterized by their sturdy construction, vibrant picture quality, and user-friendly features, which made them popular among consumers during their release.

The KV-27S42 model is equipped with Sony's advanced Trinitron technology, offering a flat CRT screen that minimizes glare and enhances color accuracy. With a 27-inch display size, the KV-27S42 is designed to provide an immersive viewing experience without occupying excessive space in the living room. This model also features a variety of input options including composite, S-video, and RF inputs, allowing users to connect multiple devices such as VCRs, DVD players, and gaming consoles effortlessly.

The KV-27S66 model builds upon the strengths of its predecessor with enhancements in audio and video technologies. It features a built-in 2-channel sound system that delivers clear and dynamic audio, complementing the stunning visuals produced by the Trinitron display. The KV-27S66 also includes a digital comb filter, which improves picture sharpness by separating the brightness and color signals, resulting in reduced artifacts and enhanced clarity.

Meanwhile, the KV-27S46 incorporates some of the latest technologies of its time, such as the use of Super Fine Pitch Trinitron technology. This innovation enhances the display's resolution, offering finer detail and more precise color reproduction. The KV-27S46 also supports multiple viewing formats, making it suitable for various video sources, including standard cable and DVDs.

Each of these models is designed with an intuitive on-screen menu that simplifies the navigation of settings, making it easy for users to adjust picture and sound settings to their preferences. Remote control functionality further enhances the user experience, allowing for effortless operation from a distance.

In summary, the Sony KV-27S42, KV-27S66, and KV-27S46 televisions stand out for their historical significance in delivering quality display and audio technologies. With various features that cater to home entertainment needs, these televisions remain a testament to Sony's lasting legacy in the consumer electronics market. While these models may not compete with today's flat-screen technology, they were pioneering products that set the stage for future innovations in television design and performance.