Hitachi 50SBX78B, 60SBX78B service manual JIG Screen Specification, Before, After

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(5) Press the service only switch (on

POWER/DEFLECTION PWB). The pattern displayed is now the digital convergence mode.

(6) When performing a complete digital convergence adjustment CLEAR DATA in RAM. See 2.6. (1) - (7).

Adjustment Point

JIG SCREEN SPECIFICATION

GEOMETRIC CENTER OF THE SCREEN

(84.9) [102.1]

[1227.2]

ki

MODEL: (50”), [60”]

a

UNIT: mm

 

Note: If only minor adjustments to convergence are needed, the jig screen is not necessary. Use digital data stored in memory and one color as a reference (red, green, or blue). DO NOT CLEAR DATA and WRITE to ROM memory.

2.14.1 Phase adjustment (service mode)

Adjustment preparation

(1)PHASE adjustment - This is to match the digital convergence cursor position to the video image displayed, and to match the digital convergence cursor position (dotted lines) to digital convergence data position (bent lines).

Adjustment procedure

(1)Press the HELP button on the remote to select phase adjustment. (Only Green displayed).

(2)Identify the bent lines and use the cursor buttons to move the dotted lines in between as

shown.

I:;Press HELP to exit PHASE mode.

Press ENTER 5 times to display external signal.

(5)Identify center of active video, then press ENTER 5 times to return to internal cross-hatch.

(6)Press HELP (phase adj.), and use 2, 4, 5 and 6 to position internal cross-hatch center on active video center identified in step (5).

(7)Press HELP to exit PHASE mode.

BEFORE

ACTIVE

VIDEO

CENTERUSE CURSOR KEYS TO MOVE

FROMDOTTED LINES

STEP (5)

3ElWEEN BENT

LINES FIRST

THEN USE NUMBER KEYS TO MATCH INTERNAL

CROSSHATCH CENTER TO ACTIVE VIDEO CENTER

AFTER

2.14.2 Raster position adjustment

Adjustment preparation

(1)Position adjustment - This will move an entire color. Use this adjustment to match colors at the center of the screen. (Active video center from external signal and physical screen center should now match from phase adj. 2.15.1.).

(2)Use the buttons below to switch color to adjust. “RECALL’ - Green

“0” - Red “INPUT” - Blue

Adjustment procedure

(1)Press the FRZ button. Extra horizontal lines appear to confirm raster position mode.

(2)Use the cursor buttons to adjust position.

(3)Press FRZ again to exit raster position mode. Notes: (1) Other functions cannot be accessed when

in raster position adjustment mode. Press FRZ and confirm extra horizontal lines disappear to exit raster position mode.

(2)Press MENU to switch between all colors displayed or adjustment color and Green only.

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Contents Contents Projection Color TelevisionSafety Notice USE Isolation Transformer When Servicing Safety Precautions Leakage Current for Appliances and UnderwritersTube Detailing X-radiation ShieldPage Servicing Precautions Immediately before handling any semiconductorUse Solding Iron to Pry Leads Insulated Jumper Wire Bare JumperSoldering Iron Iron wire Determine the positionsIPOWER/DEFLECTION PWB Technical CautionsAudio Output Power Dimension 50SBX78BAudio Input Stereo Audio OutputGeneral Information TransmitterCustomized Picture and Sound Adjustments CursorCOLOR, Tint Brightness Color TintIll BassVCR TV Guide PLUS+Guide Step ExampleSelect Outside antenna or Cable TV coaxial cableRecall AudioVCR #I 0Set U END of SET UP FBT RemarkMake sure the silicon cover is Covering the high voltage outputCPT AdjustmentCRT Adjustable data Others Fixed data be careful not to change When ExchangingTime Tour at first Power on by Adjustment procedureFinal Assembly Adjustment Contrast Half Brightness MinimumWhite balance adjustment Sub brightness adjustmentRepeat for P832 and ROM6 Green, P862 and ROM4 for Red PointFrontrear MrnFront Rear Center Front RearTwa4 Vertical size adjustment R630+2 mm Horizontal size adjustment R603 Adjustment preparation +- $$iThis can eliminate the need for a complete Observing PointsConvergence first. Press front panel Magic After JIG Screen SpecificationBefore Convergence point adjustment Digital Convergence Remote ControlThen Press RECALL’ ROM WriteGUIDE+ OSD Adjustment Point CRT, cabinet locationsSURROUNDP.W.B.SIGNALSUB B. VM Main Chassis Signal P.W.BIscii ROM8 ROM6 ROM4IXI Power/Deflection P.W.BMain Chassis Ooor CPT R G B, Focus Pack, Control P.W.BTroubleshooting YesOFF TvsvYes No.~ Voltage at pin 5 Yes E991 blownNormal Abnormal 0517 Q516 Does on-screen 1501, 1903, 1001Q108, Q109, QllO, Q008 Yes NormalEception impossible with snow noise Yes U102 Yes Vcc Sv, BP 5v, T3u102Defective Synchronization Cl902PRT R PRT GNo Sound U101DCU Repair Table NtscTV ON/OFF Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Exploded MEW Replacement Parts List Symbol PartProduct Iooopfkb 50V TapeComponents Symbol Part IELTape 5OVChip Product Service SymbolCSE3 Symbol Part Description RmpgogdMTZJ-I LightPart Symbol Tuner Unit5MA Ukdg CircuitsPart Description 1OUHIoouh CoilReceiver Through Improper Servicing QAI 1KJ Tape ROA2 ROP7 Replacement Parts List With a n Have special OOK-JB SRD1/2P-S SRD1/2P-BIOK-JB OK-JBChip 1KJMINI-CHIP RAC2OHM IOK-JQRgii RkioRlio Symbol Part NO.NO RY50 Symbol EF05951

60SBX78B, 50SBX78B specifications

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In summary, the Hitachi 50SBX78B and 60SBX78B offer a compelling package of features, technologies, and characteristics that cater to the needs of modern viewers. With superior image quality, versatile connectivity, and energy efficiency, these televisions are designed to deliver an exceptional home entertainment experience.
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