Parker TLU198HB Schematic

LCD TV 19”
TLU198HB
Caution
CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN
The lightning flash with arrowhead symbol, within an equilateral triangle, is intended to alert the user to the presence of uninsulated “dangerous voltage” within the product’s enclosure that may be of sufficient magnitude to constitute a risk of electric shock to persons.
The exclamation point within an equilateral triangle is intended to alert the user to the presence of important operating and maintenance (servicing) instructions in the literature accompanying the appliance.
Precautions During Servicing
1. In addition to safety, other parts and assemblies are specified for conformance with such regulations as those applying to spurious radiation. These must also be replaced only with specified replacements. Examples: RF converters, tuner units, antenna selection switches, RF cables, noise-blocking capacitors, noise-blocking filters, etc.
2. Use specified internal Wiring. Note especially:
1) Wires covered with PVC tubing
2) Double insulated wires
3) High voltage leads
3. Use specified insulating materials for hazardous live parts. Note especially:
1) Insulating Tape
2) PVC tubing
3) Spacers (insulating barriers)
4) Insulating sheets for transistors
5) Plastic screws for fixing micro switches
4. When replacing AC primary side components(transformers, power cords, noise blockin capacitors, etc.), wrap ends of wires securely about the terminals before soldering.
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Caution
5. Make sure that wires do not contact heat generating parts (heat sinks, oxide metal film resistors, fusible resistors, etc.)
6. Check if replaced wires do not contact sharply edged or pointed parts.
7. Make sure that foreign objects (screws, solder droplets, etc.) do not remain inside the set.
MAKE YOUR CONTRIBUTION TO PROTECT THE ENVIRONMENT Used batteries with the ISO symbol
for recycling as well as small accumulators(rechargeable batteries), mini-batteries (cells) and starter batteries should not be thrown into the garbage can. Please leave them at an appropriate depot.
WARNING: Before servicing this TV receiver, read the SAFETY INSTRUCTION and PRODUCT
AFETY NOTICE.
SAFETY INSTRUCTION The service should not be attempted by anyone unfamiliar with the necessary instructions on this apparatus. The following are the necessary instructions to be observed before servicing.
1. An isolation transformer should be connected in the power line between the receiver and the AC line when a service is performed on the primary of the converter transformer of the set.
2. Comply with all caution and safety related provided on the back of the cabinet, inside the cabinet, on the chassis or LCD panel.
3. When replacing a MAIN PCB in the cabinet,always be certain that all protective are installed properly such as control knobs,adjustment covers or shields, barriers, isola­tion resistor networks etc.
4. When servicing is required, observe the original lead dressing. Extra precaution should be given to assure correct lead dressing in the high voltage area.
5. Keep wires away from high voltage or high tempera ture components.
6. Before returning the set to the customer,always perform an AC leakage current check on the exposed metallic parts of the cabinet,such as antennas, terminals,screwheads, metal overlay, control shafts, etc., to be sure the set is safe to operate without danger of electrical shock. Plug the AC line cord directly to the AC outlet (do not use a line isolation transformer during sitivity or more in the following manner. Connect a 1.5K ohm 10 watt resistor paralleled by a 0.15µF AC type capacitor, between a good earth ground (water pipe, conductor etc.,)and the exposed metallic parts, one at a time.Measure the AC voltage across the combination of the 1.5K ohm resistor and 0.15 uF capacitor. Reverse the AC plug at the AC outlet and repeat the AC voltage measurements for each exposed metallic part.The measured voltage must not exceed 0.3V RMS.
this check). Use an AC voltmeter having 5K ohms volt sen-
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Caution
This corresponds to 0.5mA AC. Any value exceeding this limit constitutes a potential shock hazard and must be corrected immediately. The resistance measurement should be done between accessible exposed metal parts and power cord plug prongs with the power switch "ON". The resistance should be more than 6M ohms.
PRODUCT SAFETY NOTICE Many electrical and mechanical parts in this apparatus have special safety-related characteristics. These characteristics are offer passed unnoticed by visual spection and the protection afforded by them cannot necessarily be obtained by using replacement components rates for a higher voltage, wattage, etc. The replacement parts which have these special safety characteristics are identified by marks on the schematic diagram and on the parts list. Before replacing any of these components,read the parts list in this manual carefully. The use of substitute replacement parts which do not have the same safety characteristics as specified in the parts list may create shock, fire, or other hazards. Must be sure that the ground wire of the AC inlet is connected with the ground of the apparatus properly.
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2. Features
Features
LCD TV SPECIFICATIONS SHEET
MODEL NO.: TLU198HB
DESCRIPTION: 19" HD LCD TV
SPECIFICATION
PANEL
Display type: 19" HD TV Aspect ratio: 16:9 Resolution: 1366*768 Brightness: 300cd/m2 Dinamic Contrast: 20,000:1 Viewing angle: 170°X 170° Maximum colors: 16.7M Response time: 5ms
AUDIO
Audio system: MTS Stereo / SAP Max. Audio Output: 2×5W
Equalizers: YES(5 Modes)
• VIDEO: CONVENIENCE
Video system: NTSC / PAL M / PAL N Video IN: PAL / NTSC
CONNECTIVITY
SCART: 1 / 16:9/4:3 Switching / YES Antenna: 1-75 ohmio VHF / UHF (RF) Scart: 1 / PC Resolutio: VGA/SVGA/×GA/W×GA VGA(D-Sub 15pin) / 1 PC Audio In: 1 HDMI Head Phone Jack: 1
• POWER
Power Requirement: 100-240 50/60Hz
ACCESSORIES
Remote controller Stand
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3. Function Layout
The picture is for a reference only, the actual item is the standard. The optional connectors and terminals are marked with “*”.
TOP VIEW OF
Function Layout
* CN1B: DVD Power Supply
& Communication
*CN3: Built-In Power
Supply & Inverter
* CNB: Built - In
Power Supply
CN2:
Inverter
CN5: LVDS
Interface
CN7: IR & Key
Interface
CN12:
Speaker
*CN12: DVD Video
& Audio Input
Front View
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4. Diagram Schematic Dimension
Diagram Schematic Dimension
5. Schematic of Key & Ir Board
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