Sylvania SRT2232X Important Safety Precautions, Safety Precautions for TV Circuit, L6115IMP

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IMPORTANT SAFETY PRECAUTIONS

Prior to shipment from the factory, our products are strictly inspected for recognized product safety 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 implement the following precautions when a set is being serviced.

Safety Precautions for TV Circuit

1.Before returning an instrument to the custom- er, always make a safety check of the entire instru- ment, including, but not limited to, the following items:

a.Be sure that no built-in protective devices are de- fective and have been defeated during servicing.

(1)Protective shields are provided on this chassis to protect both the technician and the customer. Correctly replace all missing protective shields, in- cluding any removed for servicing convenience.

(2)When reinstalling the chassis and/or other as- sembly in the cabinet, be sure to put back in place all protective devices, including but not limited to, nonmetallic control knobs, insulating fishpapers, adjustment and compartment covers/shields, and isolation resistor/capacitor networks. Do not oper- ate this instrument or permit it to be operated without all protective devices correctly in- stalled and functioning. Servicers who defeat safety features or fail to perform safety checks may be liable for any resulting damage.

b.Be sure that there are no cabinet openings through which an adult or child might be able to insert their fingers and contact a hazardous voltage. Such openings include, but are not limited to, (1) spac- ing between the picture tube and the cabinet mask, (2) excessively wide cabinet ventilation slots, and (3) an improperly fitted and/or incorrectly secured cabinet back cover.

c.Antenna Cold Check - With the instrument AC plug removed from any AC source, connect an electrical jumper across the two AC plug prongs. Place the instrument AC switch in the on position. Connect one lead of an ohmmeter to the AC plug prongs tied together and touch the other ohmme- ter lead in turn to each tuner antenna input ex- posed terminal screw and, if applicable, to the coaxial connector. If the measured resistance is less than 1.0 megohm or greater than 5.2 mego- hm, an abnormality exists that must be corrected before the instrument is returned to the customer. Repeat this test with the instrument AC switch in the off position.

d.Leakage Current Hot Check - With the instru- ment completely reassembled, plug the AC line cord directly into a 120V AC outlet. (Do not use an isolation transformer during this test.) Use a leak-

age current tester or a metering system that com- plies with American National Standards Institute (ANSI) C101.1 Leakage Current for Appliances and Underwriters Laboratories (UL) 1410, (50.7). With the instrument AC switch first in the on posi- tion and then in the off position, measure from a known earth ground (metal water pipe, conduit, etc.) to all exposed metal parts of the instrument (antennas, handle brackets, metal cabinet, screw heads, metallic overlays, control shafts, etc.), es- pecially any exposed metal parts that offer an elec- trical return path to the chassis. Any current measured must not exceed 0.5 milli-ampere. Re- verse the instrument power cord plug in the outlet and repeat the test.

READING SHOULD

 

 

NOT BE ABOVE 0.5 mA

 

 

 

LEAKAGE

DEVICE

CURRENT

BEING

TESTER

TESTED

+

_

 

TEST ALL EXPOSED

METAL SURFACES

 

ALSO TEST WITH

 

 

PLUG REVERSED

 

 

USING AC

 

EARTH

ADAPTER PLUG

 

AS REQUIRED

 

GROUND

ANY MEASUREMENTS NOT WITHIN THE LIMITS SPECIFIED HEREIN INDICATE A POTENTIAL SHOCK HAZARD THAT MUST BE ELIMINATED BEFORE RETURNING THE INSTRUMENT TO THE CUSTOMER OR BEFORE CONNECTING THE ANTENNA OR ACCESSORIES.

e.X-Radiation and High Voltage Limits - Because the picture tube is the primary potential source of X-radiation in solid-state TV receivers, it is special- ly constructed to prohibit X-radiation emissions. For continued X-radiation protection, the replace- ment picture tube must be the same type as the original. Also, because the picture tube shields and mounting hardware perform an X-radiation protection function, they must be correctly in place. High voltage must be measured each time servic-

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Contents SRT2232X Important Safety Notice Table of ContentsSpecifications Description Condition Unit Nominal LimitDBµV DBµV AFT Pull In Range 10mV input MHz ±2.2 ±0.7Important Safety Precautions Safety Precautions for TV CircuitNot be Above 0.5 mA L6115IMPL6115IMP Precautions during Servicing Clearance Distance Safety Check after ServicingLeakage Current Test How to Remove / Install Flat Pack-IC Standard Notes for ServicingCircuit Board Indications RemovalWith Iron Wire With Soldering IronInstructions for Handling Semiconductors Cabinet Disassembly Instructions Disassembly FlowchartDisassembly Method Reference Notes in the TableRear Cabinet Main CBATV Cable Wiring Diagram Electrical Adjustment Instructions How to set up the service mode+B Adjustment Service modeInitial Setting AV Memory Setting dataGeneral Set toEnter the Service mode. See CNTSD Check Mode Black Stretch Control AdjustmentPurity Check Position Adjustment Size Adjustment10. V. Position Adjustment Pedestal Adjustment14. H. Size Adjustment Software ResetPIN Cushion Adjustment White Balance Adjustment Cut-off AdjustmentMode Input Focus Adjustment Sub-Brightness AdjustmentPurity Adjustment Convergence Adjustment FiguresSystem Control Block Diagram Block DiagramsL6650BLS IF/Video Block Diagram RF/IF Signal Video Signal Audio SignalAudio Block Diagram L6650BLACRT/H.V. Block Diagram WF7 WF8L6650BLP Power Supply Block DiagramHOT CIRCUIT. be Careful Standard Notes Schematic Diagrams / Cbas and Test PointsTolerance of Capacitors are noted with the following Wire Connectors How to read converged linesIs not consistent here Test Point InformationMain 1/4 Schematic Diagram Main 1/4 Ref No. PositionIC151 IC333 C-2 Q111 D-1 Q131 A-3 Q141 A-4 Q191 B-4 Q321 E-2Main 2/4 Schematic Diagram Main 2/4 Ref No. PositionIC431 IC771 IC801 CN801 L-4 CN802 L-3 L6650SCM2Main 3/4 Schematic Diagram Main 4/4 & CRT Schematic Diagram Main CBA Top View BL6650F01011-1Main CBA Bottom View CRT CBA Top View CRT CBA Bottom View 20∝sec WaveformsL6650WF Wiring Diagram L6650WIIC PIN Functions Pin Signal Name FunctionIC333 TV Micro Computer Input For Remote Control White Balance AdjustmentSwitching if IC VCO JudgementExploded Views CabinetDetails for DY551 and surrounding parts 11-2 L6650CEXPacking 11-3 L6250PEXMechanical Parts List V501 and DY551 CombinationCRT Warning Label Location 20030303 12-1 L6650CA20030303 13-1 L6650EL Electrical Parts ListCapacitors 20030303 13-2 L6650EL 20030303 13-3 L6650EL 20030303 13-4 L6650EL ConnectorsDiodes ICS 20030303 13-5 L6650ELCoils 20030303 13-6 L6650EL Transistors20030303 13-7 L6650EL Resistors20030303 13-8 L6650EL 20030303 13-9 L6650EL Switches 20030303 13-10 L6650EL20030303 13-11 L6650EL Miscellaneous20030303 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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