Hitachi 50SBX78B, 60SBX78B service manual DCU Repair Table, Ntsc

Page 46

7. Convergence Errors.

If an error message or code appears while performing MAGIC FOCUS or Initialize (MOVE, PIP CH in service mode) follow this confirmation and repair method.

1.Turn on power and receive any signal.

2.Press service switch on Power/Defleciton board.

3.Press “SWAP” then “PIP CH” on remote control.

4.Error code will be displayed in bottom right corner of screen. If there is no error, and “INITIAL OK” message will appear on screen.

5. Follow repair table for errors.

Error Error Code Message

1 VF Error

2Connect 1

*2

DCU REPAIR TABLE

Countermeasure

Replace DCU

1.Darken Outside light

2.Placing of sensor

3.Is pattern hitting sensor

4.Check connection and solder bridge of sensor

5.Replace sensor

6.Replace sensor P.W.B.

7.Sensor Connector check

8.Replace DCU

9.Adjustment check (H/V size, centering)

Application

Magic

Initialize Focus

X X

3*2 A/D Level

4 Over Flow

Same as Error Code 2

1.Check the placement of sensor

2.Adjustment check (HIV size, centering)

3.Conv. amp. gain check *I (check resistor values only)

XX

X X

5Convergence Same as Error Code 4

7 Operation Same as Error Code 4

9

Connect 2

Same as Error Code 2

10

Noise

input strong field strength signal

 

 

Check the wiring of connector between sensor and DCU

11

Sync

Input strong field strength signal

 

 

Input standard signal

NTSC

*I -- RK 42, 46.50,

54, 58, 62 check these

resistors.

*2 Sensor Posrtron

 

 

XX

wm X

X X

xX

X X

(View from front side)

46

Page 45 Page 47
Image 46
Page 45 Page 47
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 Input Audio Output PowerDimension 50SBX78B Stereo Audio OutputGeneral Information TransmitterCOLOR, Tint Customized Picture and Sound AdjustmentsCursor Brightness Color TintIll BassGuide TV Guide PLUS+VCR Step ExampleSelect Outside antenna or Cable TV coaxial cableRecall AudioVCR #I 0Set U END of SET UP Make sure the silicon cover is FBTRemark Covering the high voltage outputCRT AdjustmentCPT Time Tour at first Power on by Adjustable data Others Fixed data be careful not to changeWhen Exchanging Adjustment procedureFinal Assembly Adjustment Contrast Half Brightness MinimumWhite balance adjustment Sub brightness adjustmentFrontrear Repeat for P832 and ROM6 Green, P862 and ROM4 for RedPoint MrnFront Rear Center Front Rear+2 mm Vertical size adjustment R630Twa4 Horizontal size adjustment R603 Adjustment preparation +- $$iConvergence first. Press front panel Magic Observing PointsThis can eliminate the need for a complete Before JIG Screen SpecificationAfter Then Press RECALL’ Convergence point adjustmentDigital Convergence Remote Control ROM WriteGUIDE+ OSD Adjustment Point CRT, cabinet locationsIscii SURROUNDP.W.B.SIGNALSUB B. VMMain Chassis Signal P.W.B ROM8 ROM6 ROM4Main Chassis Power/Deflection P.W.BIXI Ooor CPT R G B, Focus Pack, Control P.W.BOFF TroubleshootingYes TvsvYes No.~ Voltage at pin 5 Yes E991 blownQ108, Q109, QllO, Q008 Normal Abnormal 0517 Q516Does on-screen 1501, 1903, 1001 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 Tape Symbol PartIEL 5OVChip Product Service SymbolCSE3 Symbol Part MTZJ-I DescriptionRmpgogd Light5MA Ukdg Part SymbolTuner Unit CircuitsIoouh Part Description1OUH CoilReceiver Through Improper Servicing QAI 1KJ Tape ROA2 ROP7 Replacement Parts List With a n Have special OOK-JB IOK-JB SRD1/2P-SSRD1/2P-B OK-JBMINI-CHIP Chip1KJ RAC2OHM IOK-JQRgii RkioRlio Symbol Part NO.NO RY50 Symbol EF05951

60SBX78B, 50SBX78B specifications

The Hitachi 50SBX78B and 60SBX78B are advanced plasma televisions that represent the pinnacle of display technology in their respective categories. These models bring together innovative features, cutting-edge technology, and sleek design, ensuring an immersive viewing experience for consumers.

One of the standout characteristics of the Hitachi 50SBX78B and 60SBX78B is their screen size, with the 50-inch model catering to smaller spaces while the 60-inch offers a more cinematic experience. Both models boast impressive Full HD resolution, delivering a crisp and vibrant picture quality that enhances any viewing experience, whether it be movies, sports, or gaming.

The technology behind these televisions includes Hitachi's proprietary image processing technology, which optimizes picture quality by minimizing noise and enhancing color accuracy. This leads to deeper blacks and brighter whites, ensuring that every scene is rendered with stunning detail. The Plasmavision technology further enhances the black levels and contrast ratios, making images pop off the screen.

In addition to superior image quality, both models come equipped with a variety of connectivity options. Multiple HDMI inputs allow users to easily connect various devices such as gaming consoles, Blu-ray players, and streaming devices. The inclusion of USB ports facilitates easy viewing of photos and videos stored on external drives.

Moreover, Hitachi televisions have integrated audio technologies that enhance the overall viewing experience. The built-in speakers provide clear sound, while the digital audio output allows for connection to external sound systems, giving consumers the flexibility to customize their audio experience.

Energy efficiency is also a notable feature of the Hitachi 50SBX78B and 60SBX78B models. They are designed to consume less power than traditional televisions, aligning with the growing demand for environmentally friendly electronics. This not only reduces electricity bills but also minimizes the carbon footprint.

The sleek and modern design of these plasma televisions makes them an attractive addition to any home décor. The slim bezel offers a larger screen-to-body ratio, maximizing the viewing area while maintaining an elegant appearance.

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.
Top Page Image Contents