Sony KV-27S42 Section Diagrams Block Diagram, Circuit Board Location, Part Replaced Adjustment

Page 24

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

SECTION 6

DIAGRAMS

6.1 BLOCK DIAGRAM

6-2. CIRCUIT BOARD LOCATION

C board

(KV-27S42/27S46/27S66/ 29SL42/29SL42C/29SL42M)

CV board

(KV-29AL42/42C/ 29AL66/66C)

P board

(KV-27S66/29AL42/ 42C/29AL66/66C)

K board

(KV-27S66/29AL42/ 42C/29AL66/66C)

A board

HT board

(KV-29AL42/42C/ 29AL66/66C)

HV board

(KV-29AL42/42C/ 29AL66/66C)

E board

Part Replaced ( )

Adjustment ( )

 

 

DY, C508, C505, C507, C509, C511,

HV HOLD-DOWN

C515, C520, C573, C574, C575,

(R584)

D572, D573, D574, IC301, IC521,

 

IC602, L591, L501, R582, R583,

 

R585, R578, R586, R625, R626,

 

T504

 

 

 

 

 

IC601, IC602

B+ VOLTAGE

CONFIRMATION

 

 

 

•All voltages are in Volts

•Voltage is DC with respect to ground unless otherwise noted.

•Readings are taken with a 10MW digital multimeter.

•Readings are taken with a color-bar signal input.

•Voltage variations may be noted due to normal production tolerance.

6-3. PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS

• All capacitors are in ∝F unless otherwise noted.

pF: ∝∝F 50 WV or less are not indicated except for electrolytic and tantalums.

•All electrolytics are 50V unless otherwise specified.

•Indication of resistance, which does not have one for rating electrical power, is as follows:

Pitch: 5mm

Rating electrical power 1/4W (CHIP: 1/10W)

•All resistors are in ohms.

KΩ = 1000Ω MΩ = 1000KΩ

• : nonflammable resistor

• : fusible resistor

•: internal component

•: panel designation and adjustment for repair

•: earth-ground

•: earth-chassis

•All variable and adjustable resistors have characteristic curve B, unless otherwise noted.

•The components identified by in this manual have been carefully factory-selected for each set in order to satisfy regulations regarding X-ray radiation. Should replacement be required, replace only with the value originally used.

•When replacing components identified by , make the necessary adjustments indicated. If results do not meet the specified value, change the component identified

by and repeat the adjustment until the specified value is achieved (refer to Safety Related Adjustments on page 17).

•When replacing parts shown in the table below, be sure to perform the related adjustments.

•Circled numbers are waveform references.

•* : cannot be measured

•: B + Line

•----- : B − Line

• : Signal path

Reference Information

RESISTOR

:

RN

METAL FILM

 

:

RC

SOLID

 

:

FPRD

NON FLAMMABLE CARBON

 

:

FUSE

NON FLAMMABLE FUSIBLE

 

:

RW

NON FLAMMABLE WIREWOUND

 

:

RS

NON FLAMMABLE METAL OXIDE

 

:

RB

NON FLAMMABLE CEMENT

 

:

 

ADJUSTMENT RESISTOR

COIL

:

LF-8L

MICRO INDUCTOR

CAPACITOR

:

TA

TANTALUM

 

:

PS

STYROL

 

:

PP

POLYPROPYLENE

 

:

PT

MYLAR

 

:

MPS

METALIZED POLYESTER

 

:

MPP

METALIZED POLYPROPYLENE

 

:

ALB

BIPOLAR

 

:

ALT

HIGH TEMPERATURE

 

:

ALR

HIGH RIPPLE

Note:

The components identified by shading and

mark

are critical for safety. Replace only with the part number

specified. The symbol

 

 

 

 

 

(displayed on component side of

the circuit board) indicates fast operating fuse. Replace only with fuse of the same rating as marked.

Les composants identifiés per un tramé et une marque sont critiques pour la sécurité. Ne les remplacer que par une

piéce portant le numéro spécifié. Le symbole indique une fusible a action rapide. Doit etre remplacee par une fusible de meme yaleur, comme marque.

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857 1 A Block Diagram.p65

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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 Disassembly SectionRear Cover Removal Chassis Assembly Removal Service PositionPicture Tube Removal Anode CAP RemovalSection SET-UP Adjustments Adjustment ProcedureBeam Landing Purity ControlDynamic Convergence Adjustment ConvergenceVertical Static Convergence Horizontal Static ConvergenceMethod of Setting the Service Adjustment Mode White Balance AdjustmentsSection Safety Related Adjustments Hold-down ReadjustmentB+ Voltage Confirmation and Adjustment Preparation Before ConfirmationFBT ABL11 Section Circuit Adjustments Setting the Service Adjustment ModeService Adjustment Mode On Adjust Buttons and IndicatorsAdjustment Items Service Data Initial Value Average Data Name RangeBoard Adjustments Sub Hue, Sub Color Adjustment SHUE, Scol Size Adjustment VsizCenter Adjustment Vpos Center Adjustment HposSection Diagrams Block Diagram Printed Wiring Boards and Schematic DiagramsPart Replaced Adjustment Circuit Board LocationBoard * Mark Variant List Board Schematic Diagram Board Waveforms Board IC Voltage ListBoard Schematic Diagram Board * Mark Variant List Board IC Boardtransistor Board Schematic DiagramHT Board Schematic Diagram Component Side Board WaveformsCV Board Transistor CV Board IC Voltage List CV Board WaveformsBoard Transistor Voltage List HV Board Schematic Diagram Board IC Voltage List SemiconductorsSection Exploded Views IC1403Emblem NO.9, Sony Beznet Assy KV-29XL42MMulti Button GUIDE, LEDBeznet Assy DY Y29NXA-VCV Mounted PC Board Piece a 110, Conv CorrectCORD, Power with Connector 25 A-1372-617-A HV VAR Mounted PC BoardCABLE, P-P Model Common Parts Listing a CapacitorCommon Parts Listing Connector DiodeFerrite Bead JackChip Conductor CoilResistor Q300Transistor 2SD601A-Q Transistor 2SA1091-OREF.NO. Part no Metal CarbonSwitch RelayTransformer RES, ChipThermistor TunerCrystal Board Variant Parts List Connector TransformerDiode Thermistor LINK, ICDiode Transformer 560µF400V KV-27S46 680µFConnector Switch KV-29SL46Board Variant List KV-27S66 IC STR-F6626Board Variant List KV-29AL42/29AL42C Transformer Capacitor THP601 ! 1-803-540-11 ThermistorRES,CHIP Board Variant List KV-29AL66/29AL66C Jack TransformerTransistor Thermistor R391J1751 ! 1-251-688-11 SOCKET, CRT J1701 0022µF125V 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 29NXIncorrect CorrectDYY29VXA-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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