Sylvania SRT2232X service manual L6115IMP

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ing is performed that involves B+, horizontal de- flection or high voltage. Correct operation of the X- radiation protection circuits also must be recon- firmed each time they are serviced. (X-radiation protection circuits also may be called "horizontal disable" or "hold down.") Read and apply the high voltage limits and, if the chassis is so equipped, the X-radiation protection circuit specifications giv- en on instrument labels and in the Product Safety

& X-Radiation Warning note on the service data chassis schematic. High voltage is maintained within specified limits by close tolerance safety-re- lated components/adjustments in the high-voltage circuit. If high voltage exceeds specified limits, check each component specified on the chassis schematic and take corrective action.

2.Read and comply with all caution and safety-relat- ed 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 re- ceiver. Design alterations and additions, including, but not limited to circuit modifications and the ad- dition of items such as auxiliary audio and/or video output connections, might alter the safety charac- teristics of this receiver and create a hazard to the user. Any design alterations or additions will 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 pro- tection, 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. Some "in-line" picture tubes are equipped with a permanently attached deflection yoke; be- cause of potential hazard, do not try to remove such "permanently attached" yokes from the pic- ture tube.

5.Hot Chassis Warning -

a.Some TV receiver chassis are electrically connect- ed directly to one conductor of the AC power cord and maybe safety-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. To confirm that the AC power plug is inserted correctly, with an AC volt- meter, measure between the chassis and a known

earth ground. If a voltage reading in excess of 1.0V 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 re- gardless of the AC plug polarity. This chassis can be safety-serviced only with an isolation transform- er 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 iso- lated from the AC power line. The two ground sys- tems are electrically separated by insulation material that must not be defeated or altered.

6.Observe original lead dress. Take extra care to as- sure 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 ther- mally hot parts,c. the AC supply,d. high voltage, and,e. antenna wiring. Always inspect in all areas for pinched, out of place, or frayed wiring. Check AC power cord for damage.

7.Components, parts, and/or wiring that appear to have overheated or are otherwise damaged should be replaced with components, parts, or wir- ing that meet original specifications. Additionally, determine the cause of overheating and/or dam- age and, if necessary, take corrective action to re- move any potential safety hazard.

8.Product Safety Notice - Some electrical and me- chanical parts have special safety-related charac- teristics which are often not evident from visual inspection, nor can the protection they give neces- sarily be obtained by replacing them with compo- nents rated for higher voltage, wattage, etc.. Parts that have special safety characteristics are identi- fied by a ( #) on schematics and in parts lists. Use of a substitute replacement that does not have the same safety characteristics as the recommended replacement part might create shock, fire, and/or other hazards. The product's safety is under re- view continuously and new instructions are issued whenever appropriate. Prior to shipment from the factory, our products are strictly inspected to con- firm they comply with the recognized product safe- ty and electrical codes of the countries in which they are to be sold. However, in order to maintain such compliance, it is equally important to imple- ment the following precautions when a set is being serviced.

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Contents SRT2232X Table of Contents Important Safety NoticeDescription Condition Unit Nominal Limit SpecificationsDBµV DBµV AFT Pull In Range 10mV input MHz ±2.2 ±0.7Safety Precautions for TV Circuit Important Safety PrecautionsNot be Above 0.5 mA L6115IMPL6115IMP Precautions during Servicing Leakage Current Test Safety Check after ServicingClearance Distance Standard Notes for Servicing How to Remove / Install Flat Pack-ICCircuit Board Indications RemovalWith Soldering Iron With Iron WireInstructions for Handling Semiconductors Disassembly Flowchart Cabinet Disassembly InstructionsDisassembly Method Reference Notes in the TableMain CBA Rear CabinetTV Cable Wiring Diagram How to set up the service mode Electrical Adjustment Instructions+B Adjustment Service modeAV Memory Setting data Initial SettingGeneral Set toCNT Enter the Service mode. SeePurity Check Black Stretch Control AdjustmentSD Check Mode Size Adjustment Position Adjustment10. V. Position Adjustment Pedestal AdjustmentPIN Cushion Adjustment Software Reset14. H. Size Adjustment Mode Input Cut-off AdjustmentWhite Balance Adjustment Purity Adjustment Sub-Brightness AdjustmentFocus Adjustment Figures Convergence AdjustmentL6650BLS Block DiagramsSystem Control Block Diagram RF/IF Signal Video Signal Audio Signal IF/Video Block DiagramL6650BLA Audio Block DiagramWF7 WF8 CRT/H.V. Block DiagramHOT CIRCUIT. be Careful Power Supply Block DiagramL6650BLP Tolerance of Capacitors are noted with the following Schematic Diagrams / Cbas and Test PointsStandard Notes How to read converged lines Wire ConnectorsIs not consistent here Test Point InformationMain 1/4 Ref No. Position Main 1/4 Schematic DiagramIC151 IC333 C-2 Q111 D-1 Q131 A-3 Q141 A-4 Q191 B-4 Q321 E-2Main 2/4 Ref No. Position Main 2/4 Schematic DiagramIC431 IC771 IC801 CN801 L-4 CN802 L-3 L6650SCM2Main 3/4 Schematic Diagram Main 4/4 & CRT Schematic Diagram BL6650F01011-1 Main CBA Top ViewMain CBA Bottom View CRT CBA Top View CRT CBA Bottom View L6650WF Waveforms20∝sec L6650WI Wiring DiagramIC333 TV Micro Computer Pin Signal Name FunctionIC PIN Functions White Balance Adjustment Input For Remote ControlSwitching if IC VCO JudgementCabinet Exploded ViewsDetails for DY551 and surrounding parts 11-2 L6650CEX11-3 L6250PEX PackingV501 and DY551 Combination Mechanical Parts ListCRT Warning Label Location 20030303 12-1 L6650CACapacitors Electrical Parts List20030303 13-1 L6650EL 20030303 13-2 L6650EL 20030303 13-3 L6650EL Diodes Connectors20030303 13-4 L6650EL Coils 20030303 13-5 L6650ELICS Transistors 20030303 13-6 L6650ELResistors 20030303 13-7 L6650EL20030303 13-8 L6650EL 20030303 13-9 L6650EL 20030303 13-10 L6650EL SwitchesMiscellaneous 20030303 13-11 L6650EL20030303 13-12 L6650EL SRT2232X L6650UA

SRT2232X specifications

The Sylvania SRT2232X is a modern flat screen television that has garnered attention for its impressive features and cutting-edge technology. With a sleek design and robust capabilities, this TV is an appealing option for home entertainment.

One of the standout characteristics of the SRT2232X is its 32-inch LED display, which provides vibrant colors and sharp images. Thanks to the LED backlighting, viewers experience enhanced brightness and improved energy efficiency. The screen boasts a resolution of 1366 x 768 pixels, making it suitable for everyday viewing, whether it be movies, sports, or gaming.

The SRT2232X incorporates several technologies that improve the viewing experience. One such technology is the Digital Noise Reduction, which minimizes unwanted noise and enhances picture clarity. This feature is essential for content with high motion, ensuring that viewers can enjoy a smoother image without distractions.

The television includes integrated digital tuners that allow users to access free-to-air digital channels without the need for an additional set-top box. This convenience is coupled with HDMI ports that enable users to connect various devices, such as gaming consoles and Blu-ray players, providing versatility in multimedia options.

Audio quality is equally important, and the SRT2232X does not disappoint. It features built-in speakers that deliver clear and rich sound, suitable for standard viewing. Additionally, it often includes audio enhancement technologies that improve sound output, transforming the viewing experience into a more immersive one.

Furthermore, the Sylvania SRT2232X is designed with smart connectivity options. It typically includes USB ports that allow for direct playback of media files from flash drives. This means users can easily watch their favorite videos or view images without complicated setups.

The product is also lightweight and easily mountable, making it a flexible option for various living spaces. Whether placed on a stand or wall-mounted, the aesthetic appeal of the SRT2232X fits well in contemporary decor.

Overall, the Sylvania SRT2232X successfully combines solid performance with great features, making it a noteworthy choice for those seeking an affordable yet capable flat screen television for their home. With its combination of display technology, smart features, and user-friendly design, it provides a pleasant viewing experience for all.
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