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COLOR TV
Model No.
NS-L19W2Q-10A
CHASSIS: ZORAN775
WARNING
This service information is designed for experienced repair technicians only and is not designed for use by the general public. It does
not contain warnings or cautions to advise non-technical individuals of potential dangers in attempting to service a product. Products
powered b electricity should be serviced or repaired only by experienced professional technicians. Any attempt to service or repair the
product deal with in this service information by anyone else could result in serious injury or death.
2009 (Qingdao Electronics limited company)
All rights reserved. Unauthorized copying and distribution is a violation of
law.
1
CONTENTS
Table of contents....................................................................2
1. General Information...........................................................4
1.1 General Guidelines................................................................................4
1.2 Important notice.......................................................................4
1.3 How to read this Service Mauna..................................................5
2. SPECIFICATIONS................................................................7
3. LOCATION OF CONTROLS AND COMPONENTS..........8
3.1Board Location...................................... ...................................8
3.2 A Board----Main Board................................................................8
3.3 B Board----Power Board................................................... ........12
3.4 LCD Panel...................................... ......................................12
4. Disassemble and assemble..............................................15
4.1 Remove the Pedestal...............................................................15
4.2 Remove the Front Cover...........................................................15
4.3 Remove the LCD panel............................................................17
4.4 Remove the Main Board...........................................................17
4.5 Remove the Power Board..........................................................18
4.6 Remove the Speaker................................................................18
4.7 Remove the Keypad Assembly...................................................19
4.8 Remove the Remote Control Board.............................................19
5. INSTALLATION INSTRUCTIONS.....................................20
6. OPERATION INSTRUCTIONS..........................................23
6.1 Front Panel Controls..................................................................23
6.2 Back Panel Controls.................................................................24
6.3 Setting up Your Remote Control.................................................25
2
7. MEASUREMENTS AND ADJUSTMENTS.......................26
8. Electrical parts....................................................................31
8.1 Wiring Connection Diagram.......................................................31
8.2 Block Diagram.........................................................................32
8.3 Circuit Diagram.............................................................................32
9. Trouble Shooting Guide ..................................................49
3
1. General Information
1.1 General Guidelines
When servicing, observe the original lead dress. If a short circuit is found, replace all parts which
have been overheated or damaged by the short circuit.
After servicing, see to it that all the protective devices such as insulation barriers, insulation papers
shields are properly installed.
After servicing, make the following leakage current checks to prevent the customer from being
exposed to shock hazards.
1) Leakage Current Cold Check
2) Leakage Current Hot Check
3) Prevention of Electro Static Discharge (ESD) to Electrostatically Sensitive
1.2 Important notice
1.2.1 Follow the regulations and warnings
Most important thing is to list up the potential hazard or risk for the service personnel to open the
units and disassemble the units. For example, we need to describe properly how to avoid the
possibility to get electrical shock from the live power supply or charged electrical parts (even the
power is off).
This symbol indicates that high voltage is present inside. It is dangerous to
make any king of contact with any inside part of this product.
This symbol indicates that there are important operating and maintenance
instructions in the literture accompanying the appliance
1.2.2 Be careful to the electrical shock
To prevent damage which might result in electric shock or fire, do not expose this TV set to rain or
excessive moisture. This TV must not be exposed to dripping or splashing water, and objects
Filled with liquid, such as vases, must not be place on top of or above the TV
1.2.3 Electro static discharge (ESD)
Some semiconductor (solid state) devices can be damaged easily by static electricity. Such
Components commonly are called Electrostatically Sensitive (ES) Devices. The following
tech-niquesshouldbeusedtohelpreducetheincidenceofcomponentdamagecausedbyelectro
Static discharge (ESD).
1.2.4 About lead free solder (PbF)
This product is manufactured using lead-free solder as a part of a movement within the consum-er
products industry at large to be environmentally responsible. Lead-free solder must be used in the
servicing and repair of this product.
1.2.5 Use the genewing parts (specified parts)
Special parts which have purposes of fire retardant (resistors),high-quality sound (capacitors), low
noise(resistors), etc. are used.
When replacing any of components, be sure to use only manufacture's specified parts shown in
the parts list.
Safety Component
Components identified by mark have special characteristics important for safety.
4
1.2.6 Take Care to Deal With The Cathode-Ray Tube
In the condition that an explosion-proof cathoderay tube is set in this equipment, safety is se-cured
against implosion. However, when removing it or serving from backward, it is dangerous to give a
shock. Take enough care to deal with it.
1.2.7 Safety Check after Repairment
Confirm that the screws ,parts and wiring which were removed in order to service are put in the
original positions, or whether there are the portions which are deteriorated around the serviced
places serviced or not. Check the insulation between the antenna terminal or external metal and
the AC cord plug blades. And be sure the safety of that.
Insuration Test
1. Unplug the plug from the AC outlet.
2. Remove the antenna terminal on TV and turn on the TV.
3. Insulation resistance between the cord plug terminals and the eternal exposure metal
should be more than M ohm by using the 500V insulation resistance meter
4. If the insulation resistance is less than M ohm, the inspection repair should be required.
If you have not the 500V insulation resistance meter, use a Tester.
External exposure metal: Antenna terminal Headphone jack
1.2.8 Ordering Spare Parts
Please include the following informations when you order parts. (Particularly the Version
letter)
1. Model number and Version letter
The model number can be found on the back of each product and the Version letter can
be found at the end of the serial number.
2. Part No. and Description
You can find them in your service manual.
1.2.9 Photo used in this manual
The illustration and photos used in this Manual may not base on the final design of products, which
may differ from your products in some way.
1.3 How to read this Service Manual
1.3.1 Using Icons
Icons are used to attract the attention of the reader to specific information. The meaning of each icon is
described in the table below:
Note:
A "note" provides information that is not indispensable, but may nevertheless be valuable to the
reader, such as tips and tricks.
Caution:
A "caution" is used when there is danger that the reader, through incorrect manipulation,
5
may damage equipment, loose data, get an unexpected result or has to restart(part of)
a procedure.
Warning:
A "warning" is used when there is danger of personal injury.
Reference:
A "reference" guides the reader to other places in this binder or in this manual, where he/she will
find additional information on a specific topic.
6
2. Specification
Screen Size 18.5"
Display Type LCD
Panel 60 Hz vs.120 Hz 60Hz
Display Resolution 720P
Panel Resolution (Min.) 1366(H)x768(V)
Aspect Ratio 16:9
Contrast Ratio (Typ.) - panel 1000:1
Brightness (Center Typ.) cd/m2 300
Panel Native Color Temperature 6500
Uniformity (9-point Min.) 0.75(9point)
Response Time - Fact Tag 5ms
Panel Bit Depth (6 bit with FRC or 8 bit) 6bit
Lamp Life (Typ. Hours) 50000
Horizontal Viewing Angle (At CR>10) 170
Vertical Viewing Angle (AT CR>10) 160
ATSC Tuner with Clear QAM Yes
NTSC Tuner (air & cable) Yes
Zoom/Display Formats (Min.) Yes (3)
Comb Filter 3d y/c digital
3-2 Pull down Yes
USB Port for thumb drive (side) - Supports F/W Upgrade,
MP3, JPEG USB(for firmware update)
Closed Captioning Display Yes
V-Chip (Version 2.0) Yes
Sleep Timer Yes
Channel Labeling Yes
Auto Zoom Yes
Composite Inputs (back) Yes (1) (SIDE BACK)
S-Video Inputs (back) Yes (1) (SIDE BACK)
Component Video Inputs (back) Yes (1) (SIDE BACK)
HDMI Input - HDMI 1.3 (back) Yes (2) (SIDE BACK)
PC Input - VGA (back) Yes (1) (SIDE BACK)
Shared Audio Inputs Yes(COMPOSITE & S-VIDEO)
RF Input (back) Yes (1) (SIDE BACK)
Audio Outputs (back) Yes (1) (SIDE BACK)
Watts/Channel (Min at 10% THD) 3W x 2
Sound Leveler Yes
Power Light On-blue; Off-red
Power: AC 240volt/60Hz Power: AC 120volt/60Hz
Energy Star 3.0 Yes
CA ROHS Yes
Simplay HD Yes
OSD Languages Eng/Fre/Spa
7
3. LOCATION OF CONTROLS AND COMPONENTS
3.1 Board Location
A Board
B Board
C
No. Description
A Board Main Board
B Board Power supply Board
C Speaker
3.2 A Board----Main Board
3.2. 1 Function Description:
Main Board
8
Process signal which incept from exterior equipment then translate into signal that panel can display.
3.2.2 Connector definition
Main board connector
LVDS Connector (CN7)
PIN 1
9
Pin number Signal name Description
1-3 LVDSVDD Power for panel
4-6 GND Ground
7 A0N LVDS EVEN 0 - Signal
8 A0P LVDS EVEN 0 + Signal
9 A1N LVDS EVEN 1 - Signal
10 A1P LVDS EVEN 1 + Signal
11 A2N LVDS EVEN 2 - Signal
12 A2P LVDS EVEN 2 + Signal
13,14 GND Ground
15 CK1N LVDS EVEN Clock - Signal
16 CK1P LVDS EVEN Clock + Signal
17 A3N LVDS EVEN 3 - Signal
18 A3P LVDS EVEN 3 + Signal
19 NC NC
20 NC NC
21 NC NC
22 NC NC
23 NC NC
24 NC NC
25,26 GND Ground
27 NC NC
28 NC NC
29 NC NC
30 NC NC
Power supply and Inverter Connector CN3
PIN 1
Pin
number Signal name Description
Ground
Ground
10
Power
Power
Audio Output Connector CN1
PIN 1
Pin
number Signal name Description
Audio Output
Ground
Ground
Audio Output
Connector
PIN 1
Pin
number Signal name Description
Power
Ground
Key Connector
Key Connector
Key Connector
Key Connector
Key Connector
Key Connector
Key Connector
11
3.3.B Board------- (Power Board)
Supply power for Main board and Panel
Power supply and Inverter Connector CN10
Pin
number Signal name Description
Ground
Ground
Power
Power
Other Connector
AC150V~AC240V Input (CN13)
Power supply for panel (CN11)
Power supply for panel (CN12)
3.4. LCD PANEL.
12
Connector definition
13
14
4. Disassemble and assemble
4.1 Remove the Pedestal
4.2 Remove the Front Cover
15
16
4.3 Remove the LCD panel
4.4 Remove the Main Board
17
4.5 Remove the Power Board
4.6 Remove the Speaker
18
4.7 Remove the Keypad Assembly
4.8 Remove the Remote Control Board
19
5. INSTALLATION INSTRUCTIONS
Accessories
Remote Control User Manual Battery YPbPr wire
20
21
22
6. OPERATION INSTRUCTIONS
Basal information
6.1 Front panel controls
23
6.2 Back panel controls
24
6.3 Setting up Your Remote Control
25
7. MEASUREMENTS AND ADJUSTMENTS
7.1 Factory Menu
The way to the factory mode menu:
First: press menu,
Second: choose the AUDIO,
Third: input 8893.
Finished these operations, system will be into the factory mode menu. Press to
select articles, and then press the Right or enter button to sub-menu.
Software Upgrade
Auto Color
26
White Balance/Color Temp
Picture Mode Setting
Audio Mode Setting
SSPLL Setting
27
IF you want to exit this factory menu, please press the button" Exit" in the remoter.
7.2 Picture
28
7.3 Audio
7.4 CHANNELS
29
7.5 SETTINGS
8 Electrical parts
8.1 Wiring Connection Diagram
30
customer type NS-L19W2Q-10A
LA19T3W
special number DC13P0E0100
special technique
document number
AT08SR0803US01
export country AMERICA
customer BBY
brand INSIGNIA
CNC1
CNE1
Workout Auditing Standard-
ization Approve
8.2 Block Diagram
customer type NS-L19W2Q-10A
haier type LA19T3W
special number DC13P0E0100
special technique
document number AT08SR0803US01
export country AMERICA
customer BBY
brand INSIGNIA
5 6 7 8 9 10 11 12
4
3
2
1
Explain: The line bundle screw and the damageable element that does not mark in explosion picture please refer to BOM
13 reference name special number standard number
reference name special number standard number
14 number number
15 Keypad Assembly 1
14
Control Board
13 Bracket
1
12 Back Cover 1
11 hanging joining 4
21 20 19 18
Power supply
10 board 1
16
Mainboard Assembly 1
9
8 Terminal Board 1
HA IE R
Us er `s M an ua l Terminal Board Label 1
7
USB Rubber Piece 0090203774 1
17 6
21 Remote controller 0094013915I 1 5 LCD panel 0094001220DA 1
User`s Manual 0090507656 Plastic Front Cabinet 0090203738
20 1 4 1
Remote Control
19 LOGO 0090101487C 1 3 Board Assembly
0090719244 1
Light Transmission
Speaker 0094001218 2 0090203553 1
18 1 Pillar
Rubber gasket 0090301459 1 Adorning 0090203547B 1
17 5
16 Base Borad 0090203739
1 Standard-
Workout Auditing ization Approve
Rotate axis 0090101794A 1
15
8.3 Circuit Diagram
9. TROUBLE SHOOTING GUIDE
9.1. Simple check
Verify if the television is properly plugged
No Picture, no sound Verify if the television is properly supplied power
Verify if electricity is available
Verify if correct signals are input
Press INPUT button to change signal input to TV input
Blank screen
Restart the television of power supply is interrupted
Press Mute button and verify if Mute mode is set.
Switch to other channel and verify if the same problem happens.
No sound
Press VOL+ button to see of he problem can be solved.
Poor sound Verify if sound system is correct .Refer to some chapter for adjust.
Verify if correct channel is selected.
Adjust the antenna.
No picture in some channel
Make adjustments by Fine Tune and MANUAL Scan.
Verify if the same problem exists in other channels.
No color for some channel check out of picture and sound system.
program(black and white) Refer to relative instructions in the Manual for color adjusts.
Verify if the antennal is correctly connected.
Spots with some or all pictures Verify if the antennal is in good condition.
Make fine adjustment of channel.
Horizontal/vertical bars or picture Check for local interference such as an electrical appliance or
shaking power tool.
Disconnect the television from power supply and 10 seconds
later, connect the television to the power supply. If the problem
still exists, contact authorized after-sales service for technical
Television out of control
assistance.
9.2 Power Supply Board failure check
33
State: No power
First, check cables which connect with PSU, then check as follows
1) Check PSB input voltage AC input
voltage : 120V
Connector: CN13
2 Check PSB output voltage orderly
Voltage: +12V, +12V
Connector: CN10
9.3 Main board failure check
34
State No picture
35
9.4 Panel failure
Failure Mode
Part Name Description Phenomena Failure cause
Block Defect :TCP cracking or cracking
V B/D Vertical bar Dim or L/D :TCP Sunken
TCP :TCP lead cracking
36
:ACF bonding short
Vertal gray
V Dim :Awful environment and something electric enter into
line
LCD
Vertical color :Mis-align between TCP and Panel
V L/D line(light or :Panel failure
dark forever) :TCP failure
Horizontal
H B/D
bar
Horizontal
H Dim
gary line
Horizontal
H L/D line(light or
dark forever)
Failure Mode
Part Name Description Phenomena Failure cause
Bright dot dark
Dot Defect Incoming Inspection Standard
dot in panel
Panel or
Polarizer Bladder in
Polarizer Bladder between Polarizer and top glass
Bubble Polarizer
Polarizer
Polarizer Scratch Tine or rigidity arose
Scratch
F/M inside Eye winker inside
Eye winker inside Polarizer
Polarizer Polarizer
Abnormal
Abnormal Display 1.Chip lose action
Display
2.IC ahort or jointiog bad
Circuit
Bright and dark 3.Pannel and vsc connect bad
Flashing
display alternately
Failure Mode
37
Part Name Description Phenomena Failure cause
B/L normal, only
White
white screen
Screen
display
Maybe caused by surge current and EDS
B/L normal, only
Black
Black screen
Screen
display
Circuit
FIIcker Crosstalk LCD Vcom imbalance
Abnormal Only color Capacitance improper bring crosstalk inside LCD
Color abormal panel
1.Chip lose action
Only color
Abnormal 2. IC short or jointion bad
abnormal
Color 3.Pannel and vsc connect bad
Failure Mode
Part Name Description Phenomena Failure cause
When turn
Mechanlcal Caused by Mechanica noise of backlight
panel,appear
Nolse unit
cacophony
Causeed by between mechanism and
Ripple Connectric circle
pannel
*Connect badness between wire and
B/L off B/L lose action
electrode
B/L brightness *Connect badness
B/L dark
darker than normal Short between wire and electrode
B/L wire
B/L wire damaged Operation abnormal or systemic noise
damaged
B/L wire
Without backlight Operation abnormal or systemic noise
open
B/L shut B/L shutdown in Short bitween lamp housing and wire, Because
down sometime consume power too much
38
F/M in
B/L ,white,balck
F/M F/M in B/L unit
Rotundity or
wirelike
Failure Mode
Part Name Description Phenomena Failure cause
Brightness at
Light bottom of LCM
B/L unit badness
leakage brighter than
normal
Mechanlcal
B/L brightness
or B/L Uniformity Sheet in B/L unit is uneven
asymmetric
Lack screw or *Lack screw
Mount hole
screw damage Screw damage
39
40