Sony KV-27S42 service manual Board Adjustments

Page 22

Feature ID Map

 

KV-

Destination

ID-0

ID-1

ID-2

ID-3

ID-4

ID-5

ID-6

ID-7

1

27S42

US

25

145

15

235

11

3

0

64

2

27S42

CND

89

145

15

135

11

3

0

64

3

27S46

US

25

155

15

235

11

3

1

64

4

27S66

US

25

155

79

235

11

3

7

64

5

27S66

CND

89

155

79

155

11

3

7

64

6

29AL42

E

17

147

173

203

123

3

0

64

7

29AL42C

E

17

147

173

203

123

3

0

64

8

29AL66

E

17

151

237

203

123

3

7

64

9

29AL66C

E

17

151

237

203

123

3

7

64

10

29SL42

E

17

145

143

203

123

3

0

64

11

29SL42C

E

17

145

143

203

123

3

0

64

12

29SL46

E

17

155

143

203

123

3

1

64

13

29XL42M

MX

17

145

143

203

123

3

0

64

 

 

 

 

 

 

 

 

 

 

 

5-4. A BOARD ADJUSTMENTS

H. Frequency (Free Run) Check

1.Input a TV mode (RF) with no signal.

2.Connect a frequency counter to base of Q501 (TP-500 H. DRIVE).

3.Check H. Frequency for 15735 ± 200 Hz.

V. Frequency (Free Run) Check

1.Select video 1 with no signal input.

2.Set the conditions for a standard setting.

3.Connect the frequency counter on the A board to TP-508

(V OUT) or CN 501 pin (V DY+) and ground.

4.Check that V. Frequency shows 60 ± 4 Hz.

Sub Contrast Adjustment (RDRV)

1.Input a color-bar signal and set the level to 75%.

2.In Standard mode, set PICTURE to maximum, COLOR to minimum, and BRIGHTNESS to center.

3.Activate the Service Adjustment Mode.

4.Set both GON and BON items. Using and ; set each to the following values. Leave RON set to 1.

SERVICE RON 1

1: ON

0: OFF

R ON:

ON

(1)

G ON:

OFF

(0)

B ON:

OFF (0)

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

5.Select the item DCOL item and set it to 0.

6.Connect an oscilloscope probe to CN301 pin (RED OUT).

7.Select RDRV with and .

8.Adjust the value of RDRV with and for 1.75 ± 0.05 Vp-p.

White

1.75 ± 0.05 Vp-p

Black

9.Reset the item DCOL to 1.

10.Reset GON and BON values to 1.

R ON:

ON

(1)

G ON:

ON

(1)

B ON:

ON

(1)

11. Reset Picture, Color, and Bright to normal values:

PICTURE: MAX

COLOR: CENTER

BRIGHT: CENTER

12. Press then to save into the memory.

Display Position Adjustment (DISP)

1.Input a color-bar signal.

2.Set to Service Adjustment Mode.

3.Select DISP with and .

4.Adjust values of DISP with and to adjust characters to the center.

5.Write to memory by pressing then .

6.Check to see if the text is displayed on the screen.

SERVICE DISP 15

Sub Bright Adjustment (SBRT)

1.Input a crosshatch signal.

2.Activate the Service Adjustment Mode.

3.Set the PICTURE and BRIGHTNESS to minimum.

4.Select the SBRT item with and .

5.Adjust the values of SBRT with and to obtain a faintly visible crosshatch.

6.Press then to save into the memory.

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Contents BA-4DCHASSIS Trinitron Color TV Specifications Standby DimensionsW/H/DTable of Contents SELF-DIAGNOSTIC Function SAFETY-RELATED Component WarningSTANDBY/TIMER LED 101Self-diagnostic Circuit Safety CHECK-OUT Leakage TestConnecting Your TV Section GeneralKV-27S42/27S46/27S66/29AL42/29AL42C/29AL66 Troubleshooting Section DisassemblyRear Cover Removal Chassis Assembly Removal Service PositionPicture Tube Removal Anode CAP RemovalBeam Landing Section SET-UP AdjustmentsAdjustment Procedure Purity ControlVertical Static Convergence Dynamic Convergence AdjustmentConvergence Horizontal Static ConvergenceMethod of Setting the Service Adjustment Mode White Balance AdjustmentsB+ Voltage Confirmation and Adjustment Section Safety Related AdjustmentsHold-down Readjustment Preparation Before ConfirmationFBT ABL11 Service Adjustment Mode On Section Circuit AdjustmentsSetting the Service Adjustment Mode Adjust Buttons and IndicatorsAdjustment Items Service Data Initial Value Average Data Name RangeBoard Adjustments Center Adjustment Vpos Sub Hue, Sub Color Adjustment SHUE, ScolSize Adjustment Vsiz Center Adjustment HposPart Replaced Adjustment Section Diagrams Block DiagramPrinted Wiring Boards and Schematic Diagrams Circuit Board LocationBoard * Mark Variant List Board Schematic Diagram Board Waveforms Board IC Voltage ListHT Board Schematic Diagram Board Schematic Diagram Board * Mark Variant List Board ICBoardtransistor Board Schematic Diagram Component Side Board WaveformsCV Board Waveforms CV Board Transistor CV Board IC Voltage ListBoard Transistor Voltage List Section Exploded Views HV Board Schematic Diagram Board IC Voltage ListSemiconductors IC1403Multi Button Emblem NO.9, SonyBeznet Assy KV-29XL42M GUIDE, LEDCV Mounted PC Board Beznet AssyDY Y29NXA-V Piece a 110, Conv Correct25 A-1372-617-A HV VAR Mounted PC Board CORD, Power with ConnectorCABLE, P-P Model Common Parts Listing a CapacitorCommon Parts Listing Connector DiodeChip Conductor Ferrite BeadJack CoilTransistor 2SD601A-Q ResistorQ300 Transistor 2SA1091-OREF.NO. Part no Metal CarbonTransformer SwitchRelay RES, ChipTuner ThermistorCrystal Diode Thermistor Board Variant Parts ListConnector Transformer LINK, IC560µF Diode Transformer400V KV-27S46 680µFConnector Switch KV-29SL46Board Variant List KV-27S66 IC STR-F6626THP601 ! 1-803-540-11 Thermistor Board Variant List KV-29AL42/29AL42C Transformer CapacitorRES,CHIP Transistor Thermistor Board Variant List KV-29AL66/29AL66CJack Transformer R391J1751 ! 1-251-688-11 SOCKET, CRT 125V J17010022µF KV-27S42/27S46/27S66 onlyFuse VaristorHV K REF.NO. Part NO. Descriptionremark C3301 Accessories and Packing Material Remote CommanderPage Page Sony Corporation 965-857-01CORRECTION-1 733-873-05 CRT 29NXCorrect IncorrectDYY29VXA-V2 SUPPLEMENT-1 Chassis KV-27S46/27S42/29SL42/29SL42C/29SL46/29XL42M/29SL43 SUPPLEMENT-2 Beznet Assy KV-29XL42M Correction
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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.
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