Sony KV-20S90, KV-21SE43C service manual Diagrams, Circuit Boards Location, Reference Information

Page 21

KV-20S90 / 21SE43C

SECTION 5: DIAGRAMS

5-1. CIRCUIT BOARDS LOCATION

C Board

A Board

5-2. PRINTED WIRING BOARD AND SCHEMATIC DIAGRAM INFORMATION

All capacitors are in µF unless otherwise noted. pF : µµF 50WV or less are not indicated except for electrolytics and tantalums.

All electrolytics are in 50V unless otherwise specifi ed. All resistors are in ohms. K=1000, M=1000k

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

Pitch : 5mm

Rating electrical power : 1/ 4 W

1/ 4 W in resistance, 1/10 W and 1/ 8 W in chip resistance. : nonfl ammable resistor.

: fusible resistor. : internal component.

: panel designation and adjustment for repair.

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

Readings are taken with a color-bar signal input.

Readings are taken with a 10M digital multimeter.

Voltages are DC with respect to ground unless otherwise noted. Voltage variations may be noted due to normal production tolerances. All voltages are in V.

S : Measurement impossibillity.

: B+line.

: B-line. (Actual measured value may be different). : signal path. (RF)

Circled numbers are waveform references.

The components identifi ed by X in this basic schematic diagram have been carefully factory-selected for each set in order to satisfy regulations regarding X-ray radiation. Should replacement be necessary, replace only with the value originally used.

When replacing components identifi ed by Y, make the necessary adjustments as indicated. If the results do not meet the specifi ed value, change the component identifi ed by X and repeat the adjustment until the specifi ed value is achieved. (Refer to Safety Related Adjustments on Page 14.)

When replacing the parts listed in the table below, it is important to perform the related adjustments.

Part Replaced (

 

)

Adjustment ( )

 

 

 

 

 

DY, C511, C574, C575, D572,

HV HOLD-DOWN

D573, D574, R582, R583, R584,

R582

R585, R586, R578, R625, R626,

 

R640, R635,T504, IC301, IC521,

 

IC602

A Board

 

 

 

 

 

REFERENCE INFORMATION

RESISTOR

: RN

METAL FILM

 

: RC

SOLID

 

: FPRD

NONFLAMMABLE CARBON

 

: FUSE

NONFLAMMABLE FUSIBLE

 

: RW

NONFLAMMABLE WIREWOUND

 

: RS

NONFLAMMABLE METAL OXIDE

 

: RB

NONFLAMMABLE 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

The components identified by shading and !symbol are critical for safety. Replace only with part number specified.

The symbol indicates a fast operating fuse and is displayed on the component side of the board. Replace only with fuse of the same rating as marked.

Les composants identifies per un trame et une marque ! sont critiques pour la securite. Ne les remplacer que par une piece portant le numero specifie.

Le symbole indique une fusible a action rapide. Doit etre remplace par une fusible de meme yaleur, comme maque.

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Contents Trinitron Color Television Table of Contents Lbs SpecificationsSAFETY-RELATED Component Warning Leakage Test Safety CHECK-OUTSelf Diagnosis SELF-DIAGNOSTIC FunctionSelf Diagnostic Self-Diagnostic Screen DisplayDisassembly Chassis Assembly Removal Service PositionRear Cover Removal Anode CAP Removal Procedure HOW to Handle AN Anode CAPPicture Tube Removal SET-UP Adjustments Adjustment ProcedureBeam Landing Vertical Static Convergence ConvergengeSCREEN-CORNER Convergence Dynamic Convergence AdjustmentFocus Screen G2Service Adjustment Mode Service Adjustment Mode MemoryWhite Balance Adjustments HOLD-DOWN Readjustment Safety Related AdjustmentsB+ Voltage Confirmation and Adjustment Preparation Before ConfirmationDigital Digital Power Multimeter SupplyCircuit Adjustments Adjustment Items 1 Data Initial AverageFunction Range Data Video Adjustment Items 2 Board Adjustments Frequency AdjustmentID MAP Display Position Adjustment Disp SUB Contrast Adjustment RdrvSUB Bright Adjustment Sbrt SUB HUE, SUB Color Adjustment SHUE, ScolCenter Adjustment Vpos Size Adjustment VsizCenter Adjustment Hpos Linearity VLIN, V. CorrectionPrinted Wiring Board and Schematic Diagram Information DiagramsCircuit Boards Location Reference InformationDY Assy Block Diagram and SchematicsINT Board Schematic DiagramREF. no Location Board Variant Model ListBoard IC Voltage List Board IC Block DiagramsIC521 NJM4558M-TE2 PIN VoltCvco Demod IC301 CXA2133BSDiode Board Locator ListTransistor CrystalsKG KB G2 CRT RGB DRIVE, CRT Drive Semiconductors Chassis KV-20S90/21SE43C Exploded ViewsREF. no Electrical Parts ListCeramic Fuse ConnectorChip Conductor JackCoil Photo CouplerMetal Chip Metal Relay SwitchTuner VaristorRemote Commander Accessories and Packaging2LA TX 1C 3LA TX NIL BA ADS LCS IRD CCV +EVIRD Trinitron Color TV Page Safety Precautions Notification Power Sources Important SafeguardsFor the set with a polarized AC power cord plug Grounding or PolarizationOverloading CleaningObject and Liquid Entry AttachmentsAccessories Power-Cord ProtectionVentilation Outdoor Antenna Grounding Antenna Grounding According to the NECLightning Replacement Parts Damage Requiring ServiceSafety Check ServicingPage Contents Page Introduction Trinitron Color TV FeaturesAbout this Manual Batteries for the Remote ControlTV with indoor or outdoor antenna, or Catv cable Basic ConnectionsConnecting Additional Equipment TV and VCRRear of TV Cable Box Rear of TV TV and Cable BoxVCR TV, VCR, and Cable boxConnecting Headphones Connecting a CamcorderPage Button Description Using the Remote Control and Basic FunctionsIf you lost your remote control, see To perform Auto Setup again Setting Up the TV AutomaticallyMenu Quick Start to the MenusUsing the Video menu To access a menuPress f to Press F to KV-20S90 only Using the Audio menuON/OFF Timer Scheduled viewing Using the Timer menuFavorite Channel Quick access to favorite channels Using the SET UP menuCable Channel SET UP menuContents Defined as Using Parental ControlOverview of the Ratings AgeRating Defined as PG-13NC-17 14+ C8+18+ RatingActivating Parental Lock Initial access into Parental ControlSetting the Rating Using the Custom menuRating TV will allow a maximum rating Information for Parents Resetting your passwordPage Troubleshooting To be cleaned Remote controlLost password Cable stations don’t seem to workFor all models except as noted SpecificationsPage Index TV Rating A. Ratings 20 Unrated Page Page Page Page Page Page Schematic Diagrams NON-SCHEMATIC PagesTo Print Full Size Schematic Diagrams To Print Tiled Version of SchematicsON-SCREEN Search Option Original Manual Issue Date 4/2001
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