Hitachi 60SBX78B, 50SBX78B service manual

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2.Read and comply with all caution and safety-related notes on or inside the receiver cabinet, on the receiver chassis, or on the picture tube.

3.Design Alteration Warning - Do not alter or add to the mechanical or electrical design of this TV receiver. Design alterations and additions including but not

limited to circuit modifications and the addition of items such as auxiliary audio and/or video output

connectors, might alter the safety characteristics of this receiver and create a hazard to the user. Any

design alterations or additions may void the

manufacturer’s warranty and may make you, the servicer, responsible for personal injury or property damage resulting therefrom.

4.Picture Tube Implosion Protection Warning - The picture tube in this receiver employs integral implosion

protection. For continued implosion protection, replace the picture tube only with one of the same type number. Do not remove, install, or otherwise handle the picture tube in any manner without first

putting on shatterproof goggles equipped with side shields. People not so equipped must be kept safely away while picture tubes are handled. Keep the picture tube away from your body. Do not handle the picture tube by its neck.

5.Hot Chassis Warning - a. Some TV receiver chassis are electrically connected directly to one conductor of

the AC power cord and may be safely serviced without an isolation transformer only if the AC power plug is inserted so that the chassis is connected to the ground side of the AC power source. Confirm that the AC power plug is inserted correctly with an AC voltmeter by measuring between the chassis and a known earth ground. If a voltage reading in excess of 1 .OV is obtained, remove and reinsert the AC power plug in the opposite polarity and again measure the voltage potential between the chassis and a known earth ground. b. Some TV receiver chassis normally have 85V AC (RMS) between chassis and earth

ground regardless of the AC plug polarity. These chassis can be safely serviced only with an isolation transformer inserted in the power line between the receiver and the AC power source, for both personnel and test equipment protection. c. Some TV receiver chassis have a secondary ground system in addition to the main chassis ground. This secondary ground system is not isolated from the AC power line. The two

ground systems are electrically separated by insulating material that must not be defeated or altered.

6.Observe original lead dress. Take extra care to assure correct lead dress in the following areas: a. near sharp edges, b. near thermally hot parts - be sure that leads and components do not touch thermally hot parts, c. the AC supply, d. high voltage and e. antenna wiring.

Always inspect in all areas for pinched, out-of-plate, or frayed wiring. Do not change spacing between components and the printed circuit board. Check AC power cord for damage.

Components, parts, and/or wiring that appear to have

overheated or are otherwise damaged should be replaced with components, parts, or wiring that meet

original specifications. Additionally, determine the

cause of overheating and/or damage and, if necessary, take corrective action to remove any potential safety hazard.

PRODUCT SAFETY NOTICE - Many TV electrical

and mechanical parts have special safety-related

characteristics some of which are often not evident from visual inspection, nor can the protection they give necessarily be obtained by replacing them with

components rated for higher voltage, wattage, etc.

Parts that have special safety characteristics are

identified in Hitachi service data by shading on schematics and by a A in the parts list. Use of substitute replacement that does not have the same

safety characteristics as the recommended replace- ment part in Hitachi service data parts list might create shock, fire, and/or other hazards. Product

safety is under review continuously and new instructions are issued whenever appropriate. For the

latest information, always consult the appropriate current Hitachi service literature. A subscription to, or additional copies of service literature may be obtained at a nominal charge from Hitachi.

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Contents Projection Color Television ContentsSafety Notice USE Isolation Transformer When Servicing Leakage Current for Appliances and Underwriters Safety PrecautionsDetailing X-radiation Shield TubePage Immediately before handling any semiconductor Servicing PrecautionsUse Solding Iron to Pry Leads Bare Jumper Insulated Jumper WireDetermine the positions Soldering Iron Iron wireTechnical Cautions IPOWER/DEFLECTION PWBDimension 50SBX78B Audio Output PowerAudio Input Stereo Audio OutputTransmitter General InformationCursor Customized Picture and Sound AdjustmentsCOLOR, Tint Brightness Color TintBass IllVCR TV Guide PLUS+Guide Example StepOutside antenna or Cable TV coaxial cable SelectAudio RecallVCR #I 0Set U END of SET UP Remark FBTMake sure the silicon cover is Covering the high voltage outputCPT AdjustmentCRT When Exchanging Adjustable data Others Fixed data be careful not to changeTime Tour at first Power on by Adjustment procedureContrast Half Brightness Minimum Final Assembly AdjustmentSub brightness adjustment White balance adjustmentPoint Repeat for P832 and ROM6 Green, P862 and ROM4 for RedFrontrear MrnCenter Front Rear Front RearTwa4 Vertical size adjustment R630+2 mm +- $$i Horizontal size adjustment R603 Adjustment preparationThis can eliminate the need for a complete Observing PointsConvergence first. Press front panel Magic After JIG Screen SpecificationBefore Digital Convergence Remote Control Convergence point adjustmentThen Press RECALL’ ROM WriteGUIDE+ OSD CRT, cabinet locations Adjustment PointMain Chassis Signal P.W.B SURROUNDP.W.B.SIGNALSUB B. VMIscii ROM8 ROM6 ROM4IXI Power/Deflection P.W.BMain Chassis CPT R G B, Focus Pack, Control P.W.B OoorYes TroubleshootingOFF TvsvNo.~ Voltage at pin 5 Yes E991 blown YesDoes on-screen 1501, 1903, 1001 Normal Abnormal 0517 Q516Q108, Q109, QllO, Q008 Yes NormalU102 Yes Vcc Sv, BP 5v, T3u102 Eception impossible with snow noise YesCl902 Defective SynchronizationPRT G PRT RU101 No SoundNtsc DCU Repair TableTV 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 Symbol Part Replacement Parts ListIooopfkb 50V Tape ProductComponents IEL Symbol PartTape 5OVChip Symbol Product ServiceCSE3 Symbol Part Rmpgogd DescriptionMTZJ-I LightTuner Unit Part Symbol5MA Ukdg Circuits1OUH Part DescriptionIoouh CoilReceiver Through Improper Servicing QAI 1KJ Tape ROA2 ROP7 Replacement Parts List With a n Have special OOK-JB SRD1/2P-B SRD1/2P-SIOK-JB OK-JB1KJ ChipMINI-CHIP RAC2IOK-JQ OHMRkio RgiiRlio 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.
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