Parker TLU198HB User manual

LCD TV 19”
TLU198HB

CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN
TLU198HB 1
Caution
1. Caution
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.

TLU198HB 2
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, isola-
tion 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 this check). Use anAC voltmeter having 5K ohms volt sen-
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 theAC plug at theAC outlet and repeat theAC
voltage measurements for each exposed metallic part.The measured voltage must not
exceed 0.3V RMS.

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.
TLU198HB 3
Caution

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Features
2. Features
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/ PALM/ PALN
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
LCD TV SPECIFICATIONS SHEET
MODEL NO.: TLU198HB
DESCRIPTION： 19" HD LCD TV

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Function Layout
3. Function Layout
Front View
The picture is for a reference only, the actual item is the standard.
The optional connectors and terminals are marked with “*”.
TOP VIEW OF
*CN1B: DVD Power Supply
& Communication *CNB: Built - In Power Supply CN5: LVDS
Interface CN7: IR & Key
Interface CN12:
Speaker
*CN12: DVD Video
& Audio Input
*CN3: Built-In Power
Supply & Inverter CN2:
Inverter

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Diagram Schematic Dimension
4. Diagram Schematic Dimension
5. Schematic of Key & Ir Board

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Interface Definition
6. Interface Definition

TLU198HB 8
Interface Definition

TLU198HB 9
Interface Definition

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Remote Control Unit
7. Remote Control Unit
15
1.POWER:
2.MUTE:
3.0-9:
4.
5.
6.S.MODE:
7.SLEEP:
9.P.MODE:
10.MENU:
11.SOURCE:
12.
13.ENTER:
14.EXIT:
15.INFO:
8. MTS: Press to select the MTS mode.(for example,Nicam ,
BTSC,MONO,STEREO .eg )
Batteries installed in the unit should not be exposed to excessive heat such as sunshine fire and the like
CAUTION:
16.VOL+:
18.VOL-:
19.FR:
20.PLAY/PAUSE:
21.PREV:
22.STOP:
23.CH+:
25.CH-:
26.FF:
28.NEXT:
17.ROOT:
24.REPEAT: Repeat
27.A-B: Set A to B segment to repeat playing
29.GOTO: Skip
30.FAV
31.FAV-
32.FAV+
33.FREEZE
Press to add or remove your favorite
channels under TV menu
Press to switch your favorite channels
under TV menu
Press to switch your favorite channels
under TV menu
Image still
When playing the photo or VIDEO if you
press ROOT then it will stop playing and return
to the current catalogue
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29
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25
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33
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31

1 BLOCK DIAGRAM
1. BLOCK DIAGRAM
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Circuit Diagram
8. Circuit Diagram

2. Circuit(SCH)
Double click to view it.
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Circuit Diagram

TLU198HB 13
Circuit Diagram

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Circuit Diagram

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Trouble shooting
9. Trouble shooting
Service
LCD TV Trouble shooting
NOTICE: Before repair the board,make sure the software is correct or upgrade the
correct software.
Warning:If upgrade fail,such as power off during upgrading,the flash rom must be
replaced.
POWER SUPPLY TROUBLE

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Trouble shooting
Display Trouble (Exceptional Screen)
Display Trouble (White Screen)

TLU198HB 17
Trouble shooting
Audio Trouble ( No sound)
Display Trouble (Black Screen)

TLU198HB 18
Trouble shooting
Function Trouble (TV video)
Function Trouble (PC)

TLU198HB 19
Trouble shooting
Audio Trouble ( HDMI; CVBS)
Function Trouble (SCART; YPbP; and so on)