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Norcent LT2722
SERVICE MANUAL
LCD TV MONITOR
THESE DOCUMENTS ARE FOR REPAIR SERVICE INFORMATION ONLY. EVERY REASONABLE EFFORT HAS
BEEN MADE TO ENSURE THE ACCURACY OF THIS MANUAL; WE CANNOT GUARANTEE THE ACCURACY
OF THIS INFORMATION AFTER THE DATE OF PUBLICATION AND DISCLAIMS RELIABILITY FOR CHANGES,
ERRORS OR OMISSIONS.
Norcent LT2722
Revision List
Version Release Date Revision History Model Name
A00 Jan.-09-2006 Initial Release EF84MGNKB2NCTMC
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Norcent LT2722
Table Of Contents
Revision List ................................................................................................................................... 1
Table Of Contents ................................................................................................................................... 2
1. General Specifications ...................................................................................................................... 3
2. Operating Instructions ................................................................................................................. 4
2.1 The Use Of Remote Control ......................................................................................................... 4
2.2 Front Panel Control Knobs ......................................................................................................... 5
2.3 OSD Operating ........................................................................................................................... 5
2.4 Safety Notice ............ ...................................................................................................................... 10
3. Input Specification ..................................................................................................................... 13
3.1 Input Signal connector ............................................................................................................... 13
3.2 Factory Preset Display Modes............................................................................................................ 14
4. Mechanical Instructions ................................................................................................ 15
5. Repair Flow Chart ...................................................................................................................... 21
6. White Balance, Luminance Adjustment ............................................................................ 26
7. BOM List ................................................................................................................................. 28
8. PCB Layout ......................................................................................................................... 51
8.1 Main Board ........................................................................................................................ 51
8.2 Power Board ..................................................................................................................... 55
8.3 Key/IR Board .................................................................................................................. 57
8.4 Earphone Board .................................................................................................................... 58
9. Block Diagram ............................................................................................................................. 59
9.1 Main Board ...................................................................................................................... 59
9.2 Power Board ................................................................................................................... 60
9.3 Exploded View ............................................................................................................. 61
10. Schematic Diagram .............................................................................................................. 62
10.1 Main Board ....................................................................................................................... 62
10.2 Power Board .................................................................................................................... 74
10.3 Key/ IR Board .................................................................................................................... 76
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Norcent LT2722
1. General Specifications
Items Specification
Screen Size 27" TFT LCD color Panel (CMO)
Aspect Ratio 16:9
Resolution 1280 x 720 (WXGA)
Active Display Area H x V 597.12mm x 335.88mm
Pixel Pitch 0.4665mm 0.4665mm
Display colors 16.7 million
LCD Panel
Contrast Ratio 600:1 (Typical)
Brightness 550 cd / m² (Typical)
Viewing Angle 170 (Horizontal) / 170 (Vertical)
Response Time 16.6 ms (Typical)
Lamp Lifetime 60,000 hr
Color Temperature Cool / Warm (For PC only)
TV Tuning System NTSC 181 Channel (PLL band) electronic adjustment system
TV Function Sound System MTS + SAP
Color Systems NTSC
AV1 RCA x 1 Audio channel L/R x 1
RCA x 1 Audio channel L/R x 1
AV2
Video Inputs S-Video x 1 (Shared)
Component YCbCr x 1 Audio channel L/R x 1
HDTV YPbPr x 1 Audio channel L/R x 1
Signal Input Analog: D-Sub 15 pin (detachable cable)
PnP compatibility DDC2B
Analog: FH: 31.5 KHz to 80 KHz
PC Input Input frequency
FV: 56 Hz to 75 Hz
Recommended Analog: 1024 x 768 (60Hz)
Input Audio Headphone Mini-jack for stereo (3.5 ø)
Speaker (built-in): Two 5 watt speakers
Audio Output Audio Output: L / R Headphone Mini-jack jack stereo (3.5 ø)
Line Output (RCA L/R)
OSD language English, French and Spanish (default is English)
Power Supply AC 100V~240V, 50/60 Hz
Power
Power Consumption <150 W
Panel Tilt Forwards/Backwards/ Rotation -5° / +20°/ ±35°
Operating Temp. +0°C ~ + 40°C
Environment Storage Temp. -10°C ~ + 60°C
Operating Humidity 10% ~ 85%
Dimension W x H x D (with stand) 898 x 500x285(mm)
Weight With Stand 13.4Kg
D-Sub Signal Cable, AC Power cord, 3.5mm Audio cable, Remote Controller, Battery (x2),
Accessories
User's manual
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Norcent LT2722
2. Operations Instructions
2.1 The Use Of Remote Control
MUTE
POWER: Temporarily interrupt
Press to turn on/off the TV. The TV the sound or restore it.
is never completely powered off
unless it is physically unplugged. DISPLAY
Press this button to
0~9/100 Digit buttons Display Channel
To select a TV channel. number on the right-top
corner.
CH
Press or to brows MTS
through the TV channels Press this key to
which are not erased. To activate Multichannel
view a blocked channel, Television Sound,
use the digit buttons to Stereo or Mono sound.
access the channel and
enter your access code. PRE-CH
To display the previously
VOL selected TV channel.
Press + or to
adjust the volume.
TV/VIDEO
Select your input source: press
TV/VIDEO and , , , to
SIZE
select TV,S-VIDEO, AV1, AV2,
Display the graphic
COMPONENT,VGA(PC) or
in 16:9 or 4:3 mode
HDTV mode, according to
where you connected your
external source.
SLEEP
AV1/AV2 for a VCR connected
With this key you can set a
to the AV connectors of the
time period after which the
TV.
TV should switch itself to
S-VIDEO for a S-Video VCR
standby. Press the key
connected to the S-VIDEO
repeatedly to select the
connector of the TV.
number of minutes. The
COMPONENT and HDTV
counter runs from 0, 30, 60,
input via Y,Cb,Cr / Y,Pb,Pr on
120 minutes. The timer
MENU, , , , the DVD Player or set top
begins to count down from
These buttons are used to box.
the number of minutes
display or adjust the various VGA For PC mode
selected after the display has
disappeared. functionalities.When the PIP
is ON but no menus are CAPTION
available, use these , , Press this button to turn
PIP , to change the position Closed Caption on.
ON/OFF of the PIP.
Used to switch the PIP
function ON or OFF V-CHIP PIP
Use this button to define TV/VIDEO
the movies that this TV set Select the signal source: If you
PIP/POP can receive are in main picture or HDTV
Press this button to mode, you can select audio1,
display PC input and audio2, S-video, color contrast
SWAP
other input on the or TV signal. Otherwise, you
Press to swap the two
screen at the same time can only select computer
screens when PIP or
POP is work graphics or HDTV.
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2.2 Front Panel Control Knobs
Power Key: Press to turn on or off the TV.
MENU Key: Press to show the OSD menu and exit OSD menu at the TV.
Down / Up Key: Press to perform select function and channel.
- / + Key: Press to confirm your function selection and adjustment.
Source Key: Press to select your input source.
2.3 OSD Operations
1. Press the MENU button to display or close the main menu.
2. Use the cursor up/down to select a menu item.
3. Use the cursor left/right to enter a submenu or enable/disable the function.
4. Press the MENU button to exit the menu.
5. Use the instruction bar display under the menu to assist in the operation of this equipment.
MAIN MENU
Press the MENU button into the main OSD (On Screen Display). Adjust item include PICTURE PARAMETERS,
PC PARAMETERS, AUDIO SETTINGS, PICTURE-IN-PICTURE, CHANNEL SETTINGS, PARENTAL
CONTROLS and GENERAL SETTINGS.
PICTURE PARAMETERS
BRIGHTNESS: Adjust the brightness of the image.
CONTRAST: Adjust the contrast of the image.
SATURATION: Adjust the depth of color of the image.
HUE: Adjust the red/green hue of the image.
COLOR TEMP: Adjust the color temperature to your preference: 5000°, 6500°, 9300°K or select USER R, USER G,
USER B to define your personal settings.
FLESHTONE: The flesh tone is automatically adjusted, rendering a more natural color.
SHARPNESS: Adjust the sharpness of the video image for display accordingly.
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PC PARAMETERS
AUTO CONFIG: Enable the automatic configuration of the optimum size of the graphic.
CLOCK: Adjust the time.
PHASE: Adjust the phase of the graphic.
POSITION: Adjust the position and angle of the graphic.
AUDIO SETTINGS
BASS: Adjust bass tone.
TREBLE: Adjust treble tone.
SRS: Switch SRS surround sound ON or OFF.
MTS: Select MONO, STEREO or SAP for bilingual setup.
MUTE: Temporarily mute the sound (can be done through remote control).
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PICTURE-IN-PICTURE
PIP POSITION: The PIP can be placed in any position on the screen according to one's wishes. If there is no
menu, use the , , , buttons on the remote control to change the PIP position.
PIP SIZE: Can be used to switch the PIP off (OFF) or select the size (SMALL, MEDIUM, LARGE) of the PIP.
Can also be used to select one of two types (POP, PBP) of dual graphics.
CHANNEL SETTINGS
SYSTEM: Used to choose between (ANTENNA) or (CABLE).
CHANNEL EDIT: The auto scan function searches and stores the signal of the TV station when the YES option is
selected. The ADD or DELETE function edits the TV station signal while the channel will be displayed if the
CURRENT CH function is selected.
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Norcent LT2722
PARENTAL CONTROLS
LOCK MENU: Switch the functionality to configure ratings on or off.
MPAA RATING: Configure MPAA ratings.
TV PG RATING: Configure TVPG ratings.
PASSWORD: Change the password (default is `1111"). Please follow the instructions on the screen. Once
changed, please remember your own password. If you have forgotten your password, please do the following:
"POWER (OFF) MENU V-CHIP MUTE" to revert to the default password of 1111.
CAPTION
Press the "CAPTION" button on the remote to initiate the functionality list as shown on the left.
CC CONTROL: Switch the subtitles function ON or OFF.
MODE: Select mode of subtitles.
DISPLAY: Select display of subtitles.
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GENERAL SETTINGS
OSD POSITION: Shift the position to one's preference.
OSD TIMEOUT: Configure the time to be displayed on screen.
OSD LANGUAGE: Configure the language (English, French or Spanish) for the menu.
OSD LOCK: Lock the selected configurations to prevent them from being overwritten.
SLEEP TIMER: Configure the time for sleep mode.
INFORMATIONS : Display the resolution and H sync, V synch for the main graphic.
FACTORY RESET: Select YES to revert to default configurations.
TRANSPARENCY: Adjust the brightness of the background.
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2.4 Safety Notice
For Your Safety
Before operating the TV please read this manual thoroughly. This manual should be retained for future reference
FCC Class B Radio Frequency Interference Statement
WARNING: (FOR FCC CERTIFIED MODELS)
NOTE: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to
Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference
in a residential installation. This equipment generates, radiate radio frequency energy, and if not installed and used
in accordance with the instructions, may cause harmful interference to radio communications. However, there is no
guarantee that interference will not occur in a particular installation. If this equipment does cause harmful
interference to radio or television reception, which can be determined by turning the equipment off and on, the user
is encouraged to try to correct the interference by one or more of the following measures:
1. Reorient or relocate the receiving antenna.
2. Increase the separation between the equipment and receiver.
3. Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
4. Consult the dealer or an experienced radio/TV technician for help.
NOTICE
1. The changes or modifications not expressly approved by the party responsible for compliance could void the
user's authority to operate the equipment.
2. Shielded interface cables and AC power cord, if any, must be used in order to comply with the emission limits.
WARNING:
To prevent fire or shock hazard, do not expose the TV to rain or moisture. Dangerously high voltages are present
inside the TV. Do not open the cabinet. Refer servicing to qualified personnel only.
SRS, SRS and are registered trademarks of SRS Labs, Inc.
This product is designed using SRS technology with permission from SRS Labs, Inc.
SAFETY: Lamp Disposal
LAMP(S) INSIDE THIS PRODUCT CONTAIN MERCURY AND MUST BE RECYCLED OR DISPOSED OF
ACCORDING TO LOCAL, STATE OR FEDERAL LAWS. FOR MORE INFORMATION, CONTACT THE
ELECTRONIC
INDUSTRIES ALLIANCE AT WWW.EIAE.ORG.
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IMPORTANT SAFETY INSTRUCTIONS
Read before operating equipment
1. Read these instructions.
2. Keep these instructions.
3. Heed all warnings.
4. Follow all instructions.
5. Do not use this apparatus near water.
6. Clean only with a dry cloth.
7. Do not block any of the ventilation openings. Install in accordance with the manufacturers instructions.
8. Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus (including
amplifiers) that produce heat.
9. Do not defeat the safety purpose of the polarized or grounding type plug. A polarized plug has two blades with
one wider than the other. A grounding type plug has two blades and third grounding prong. The wide blade or
third prong is provided for your safety. When the provided plug does not fit into your outlet, consult an electrician
for replacement of the obsolete outlet.
10. Protect the power cord from being walked on or pinched particularly at plugs, convenience receptacles, and the
point where they exit from the apparatus.
11. Only use attachments/accessories specified by the manufacturer.
12. Use only with a cart, stand, tripod, bracket, or table specified by the manufacturer, or sold with the apparatus.
When a cart is used, use caution when moving the cart/apparatus combination to avoid injury from tip-over.
13. The TV should be operated only from the type of power source indicated on the label. If you are not sure of the
type of power supplied to your home, consult your dealer or local power company.
14. Unplug this apparatus during lightning storms or when unused for long periods of time.
15. Refer all servicing to qualified service personnel. Servicing is required when the apparatus has been damaged
in any way, such as power-supply cord or plug is damaged, liquid has been spilled or objects have fallen into
apparatus, the apparatus has been exposed to rain or moisture, does not operate normally, or has been
dropped.
16. This product may contain lead or mercury. Disposal of these materials may be regulated due to environmental
considerations. For disposal or recycling information, please contact your local authorities or the Electronic
Industries Alliance: www.eiae.org
17. Damage Requiring Service The appliance should be serviced by qualified service personnel when:
A. The power supply cord or the plug has been damaged; or
B. Objects have fallen, or liquid has been spilled into the appliance; or
C. The appliance has been exposed to rain; or
D. The appliance does not appear to operate normally or exhibits a marked change in performance; or
E. The appliance has been dropped, or the enclosure is damaged.
Tilt/Stability All televisions must comply with recommended international global safety standards for tilt and
stability properties of its cabinets design.
Do not compromise these design standards by applying excessive pull force to the front, or top, of the cabinet,
which could ultimately overturn the product.
Also, do not endanger yourself, or children, by placing electronic equipment/toys on the top of the cabinet. Such
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Norcent LT2722
items could unsuspectingly fall from the top of the set and cause product damage and/or personal injury.
Power Lines An outdoor antenna should be located away from power lines.
Outdoor Antenna Grounding If an outside antenna is connected to the receiver, be sure the antenna system is
grounded so as to provide some protection against voltage surges and built up static charges.
Section 810 of the National Electric Code, ANSI/NFPA No. 70-1984, provides information with respect to proper
grounding of the mats and supporting structure grounding of the lead-in wire to an antenna-discharge unit, size of
grounding connectors, location of antenna-discharge unit, connection to grounding electrodes and requirements for
the grounding electrode. See Figure below.
EXAMPLE OF ANTENNA GROUNDING AS PER NATIONAL ELECTRICAL CODE
Note to the CATV system installer: This reminder is provided to call the CATV system installer's attention to Article
820-40 of the NEC that provides guidelines for proper grounding and, in particular, specifies that the cable ground
shall be connected to the grounding system of the building, as close to the point of cable entry as practical.
Objects and Liquid Entry Care should be taken so that objects do not fall and liquids are not spilled into the
enclosure through openings.
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3. Input Specification
3.1 Input Signal connector
This procedure gives you instructions for installing and using the LCD TV display.
Lay the display on the desired operation and plug the power cord into a convenient AC outlet. Three-wire power
cord must be shielded and is provided as a safety precaution as it connects the chassis and cabinet to the electrical
conduct ground. If the AC outlet in your location does not have provisions for the grounded type plug, the installer
should attach the proper adapter to ensure a safe ground potential.
Connect the 15-pin D-SUB color display shielded signal cable to your signal system device and lock both screws on
the connector to ensure firm grounding. The connector information is as follow:
1 5
6
10
11 15
15 - Pin Color Display Signal Cable
Pin No. Description Pin No. Description
1. Red Video 9. No Pin
2. Green Video 10. Sync Ground
3. Blue Video 11. Not Used
4. Not Used 12. Serial Data for DDC
5. Ground 13. Horiz. Sync
6. Ground-R 14. Vert. Sync
7. Ground-G 15. Serial Clock for DDC
8. Ground-B
Apply power to the display by turning the power switch to the "ON" position and allow about ten seconds for Panel
warm-up. The Power-On indicator lights "GREEN" when the display is on.
With proper signals feed to the display, a pattern or data should appear on the screen, adjust the brightness and
contrast to the most pleasing display, or press auto-adjust to get the best picture-quality.
This TV (with PC function) has power saving function following the VESA DPMS. Be sure to connect the signal
cable to the PC.
If your TV requires service, it must be returned with the power cord.
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3.2 Factory Preset Display Modes:
VGA MODES
Horizontal Vertical
Nominal Nominal
Sync Sync
Resolution Frequency Freq.
Polarity Polarity
(KHz) (Hz)
720x400 31.5 N 70.1 P
640x480 31.5 N 59.9 N
640x480 37.9 N 72.8 N
640x480 37.5 N 75 N
800x600 37.9 P 60.3 P
800x600 48.1 P 72.2 P
800x600 46.9 P 75 P
1024x768 48.3 N 60 N
1280x1024 80 P 75 P
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4. Mechanical Instructions
Step Figure Description
Lay the LCD-TV
Preparation on a flat, soft and
clean surface.
Remove Remove the
hinge hinge cover as
cover the arrowheads.
Remove Remove the six
base screws
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Remove Push the clip as
cover cable the arrowheads
Remove Remove the six
back cover screws
Remove Remove the six
cover chin screws
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Remove Remove the total
shield six screws
Remove the four
Remove scres and
main board disconnect he
wire harnesses
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Remove the six
Remove
screws and
power disconnect the
board wire harness
Remove Remove the
main frame fourteen screws
Remove the
Remove sixteen
speakers screws(the left
and bezel and right two
speakers)
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Remove the four
Remove
screws
panel
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Remove the four
screws
The end
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5. Repair Flow Chart
Panel Control Circuit
No Display
Check CN605 pin 19-22
is 5V and signal on pin OK Replace panel or
3,4,6,7,9,10,12,13,15,16 FPC cable to panel
NO 5V NO Signal
OK NG
Check Q401, Q400 Check U403 crystal
relative circuit X400 (14.318MHZ)
NG OK
Replace X400
Replace Q401, Q400 Check power supply for
1.8V, 2.5V, and 3.3V
Check relative circuit
OK
Replace U403
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Main Board Power Circuit
No Power
OK
Check CN606 NG
Pin 3, 4(12V), Check Power Board circuit
Pin 5, 6 (5V)
OK
Check U701 input (5V), NG Check Q701, Q702 and
U706 input (12V) PWR_ON control relative
circuit
OK
U704 Pin2 U700 Pin2 U705 Pin2 U701/U702/U703/U
(8V) (1.8V) (2.5V) 704 Pin2 (2.5V)
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Remote Control Block
Remote Control can't work
Check IR Board J1 Pin 1,4(5V) OK
and voltage at Pin 3 will change Replace D600 or IR board
when received signal
NG
Check Main board 5V power OK Replace line between Main
relative circuit and signal on board and IR Board or
LP602 replace U403
NG
Check Power relative
circuit
Key Board Control Block
Press key no function
Check CN600 Pin6, 7, 8 OK
voltage will change when key Replace keyboard
be pressed
NG
Check line between keyboard
and main board or U403
NG
Check U403 and relative circuit
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PC Control Block
No Display
OK
Check U403 output NG
relative circuit and panel Check CN605, FPC
control circuit cable and panel
OK
NG
Check U403 crystal
X400 (14.318MHZ) Replace X400
OK
Check power supply for NG
1.8V, 2.5V, and 3.3V Check relative circuit
OK
Check CN300 Pin1, 2, NG
3 (R, G, B) and Pin13, Check relative circuit
14(HS, VS)
OK
Replace U403
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Audio Control Block
No Sound
Check CN604, CN609 OK
and L613, L614, L616, Replace speaker
L617
NG
Check U603, U604 output
relative circuit and power
supply 24V
NG
Check CN602 Pin3-4 and
Pin1-2 are short when no OK
ear-phone plug Check earphone board
NG
Check U200/U105 output
relative circuit
NG NG
Check TUNER Check U600, U601 output
Pin11 to U105 to U105 relative circuit
relative circuit
NG
Check U600, U601
input signals
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6. White-Balance, Luminance adjustment
Approximately 30 minutes should be allowed for warm up before proceeding white balance
adjustment.
Before started adjust white balance, please setting the Chroma-7120 MEM. Channel 1 to 9300 color, MEM.
Channel 2 to 6500 color, and MEM. Channel 3 to 9300 color, (9300 parameter is x =283, y = 297, Y =
380cd/m2 (PC Mode); 6500 parameter is x = 313, y = 329, Y = 380cd/m2 (PC Mode); 9300 parameter is x =283,
y = 297, Y> 450cd/cm2 (TV Mode))
Color Temp. 9300(PC Mode) 6500(PC Mode) 9300(TV Mode)
X 0.283 0.313 0.283
Y 0.297 0.329 0.297
Y 380 380 >450
How to setting MEM.channel you can reference to Chroma-7120 user guide or simple use " SC" key and
" NEXT" key to modify x,y,Y value and use "ID" key to modify the TEXT description
Following is the procedure to do white-balance adjust
Press Number key 100 9 9 9 will into the factory mode, and OSD will be shown in the screen, then
select MORE function will into Bias and Gain adjustment.
1. ADC Adjustment:
AL Auto level adjust for PC mode.
ALY Auto level adjust for YUV mode.
RG, GG, BG R, G, B Gain adjust.
RB, GB, BB R, G, B Bias adjust.
2. SCALER Adjustment:
CO, BR Contrast and Brightness adjust.
RG, GG, BG R, G, B Gain adjust.
RB, GB, BB R, G, B Bias adjust.
S9, S6, ST, SH Save 9300, 6500, TV/AV /S-Video /480i, Component 480P color temperature.
R9, R6, RT, RH Recall 9300, 6500, TV/AV /S-Video /480i, Component 480P color temperature.
CC Set Close Caption ON/OFF.
VC Set V Chip ON/OFF.
WH Set Wireless Headphone ON/OFF.
PP Set PIP ON/OFF.
BI Setup Burn-in mode ON / OFF.
ISP Set ISP ON/OFF.
SR PP Set SRS ON/OFF.
EX Exit MORE function to factory mode menu.
I. Before adjustment:
1. Press Number key 100 9 9 1 into Engineer Mode.
2. Press menu key repeat to "ADC "page, then select "EPinit" and press "right" key to initial EEPROM.
3. Press Number key 100 9 9 9 into the Factory Mode.
II. Gain adjustment:
A. Adjust 9300 color-temperature:
1. Switch the chroma-7120 to RGB-mode (with press "MODE" button)
2. Switch the MEM. Channel to Channel 01 (with up or down arrow on Chroma-7120)
3. The LCD-indicator on chroma-7120 will show x = 283, y=297, Y>380.
4. Change Source input to PC.
5. Select AL and press "right" arrow to do the auto-level.
6. Adjust the GG up to G value at chroma-7120 is 100.
7. Adjust the BG and RG till the value of R and B value on Chroma-7120 are 100±5.
8. Repeat the item 4 and 5 to make the R, G, B value are the same.
9. Select cursor to "S9" and press "right" arrow to save the value.
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B. Adjust 6500 color-temperature:
1. Switch the chroma-7120 to RGB-mode (with press "MODE" button)
2. Switch the MEM. Channel to Channel 02 (with up or down arrow on Chroma-7120)
3. The LCD-indicator on chroma-7120 will show x = 313, y=329, Y>380.
4. Change source input to PC.
5. Select AL and press "right" arrow to do the auto-level.
6. Adjust the GG up to G value at chroma-7120 is 100.
7. Adjust the BG and RG till the value of R and B value on Chroma-7120 are 100±5.
8. Repeat the item 4 and 5 to make the R, G, B value are the same.
9. Select cursor to "S6" and press "right" arrow to save the value.
C. Adjust Video color-temperature:
1. Switch the chroma-7120 to RGB-mode (with press "MODE" button)
2. Switch the MEM. Channel to Channel 03 (with up or down arrow on Chroma-7120)
3. The LCD-indicator on chroma-7120 will show x = 283, y=297, Y>450.
4. Change source input to AV1.
5. Adjust the GG up to G value at chroma-7120 not going up; set the G value is max.
6. Adjust the BG and RG till the value of R and B value on Chroma-7120 same as G value.
7. Repeat the item 4 and 5 to make the R, G, B value the same.
8. Select cursor to "ST" and press "right" arrow to save the value.
Turn the POWER-button off to on to quit from factory mode.
Remark: 1. Auto Level of PC should be adjusted with TIMG 127, PATN 42 or 16 GRAYS screen.
2. It should be under white picture while adjusting the color temperature of all display modes.
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7. BOM List
Location Part No. for TPV Description Quantity Unit
ADPF24180A2 A/D+D/D POWER 1 PCS
CBPFF84KMGNCT MAIN BOARD 1 PCS
11T6048 1 CLAMP-S 1 PCS
15T5908 2 BRACKET 1 PCS
15T6096 2 11 MAIN FRAME 1 PCS
15V6161 1 BKT CONNECTOR 1 PCS
26T 800504 5 BARCODE 1 PCS
34V1305CGN 3L COVER HINGE 1 PCS
34V1306 GM L COVER CABLE 1 PCS
36V 600 3 Girdding Cloth FOR AUSI 1.02 PCS
40T 270815 4B ID LABEL 1 PCS
40T 58160811A GREEN LEBEL 1 PCS
40T 58162435A LABEL 1 PCS
40T 583 16 TV ICON LABEL 1 PCS
40T 583 17 TV ICON LABEL 1 PCS
41T2701815 3A MANUAL 1 PCS
41T780081523A QSG 1 PCS
41T780081524A WARRANTY CARD 1 PCS
44T2701 1 EPS FOR 27" 1 PCS
44T2701 3 EPS 1 PCS
44T2701815 5A CARTON 1 PCS
44T3231 15 EVA WASHER 1 PCS
44TZ002200 1 PIZZA BOX 1 PCS
45T 76 28 RN PE BAG FOR MANUAL 1 PCS
45T 88606 3 PE BAG FOR BASE 1 PCS
45T 88609 9 DE BAG 1 PCS
45T 88609 15 EPE COVER FOR BASE 1 PCS
45T 88626 5 PE BAG FOR MOUITOR 1 PCS
50T 500 1 CABLE TIE 2 PCS
52T 1185 MIDDLE TAPE FOR CARTON 270 CM
52T 1186 SMALL TAPE 10 CM
52T 1211 A ADHESIVE TYPE 4 PCS
52T6020 9 PROTECT FILM 1 PCS
85V6085 2 SHIELD 1 PCS
89T 173 56 8 AUDIO CABLE 1 PCS
E089B 89T1738GAA D1 SIGNAL CABLE 1 PCS
89T402A18N IS POWER CORD 1 PCS
92TB1JX1A31GF BATTERY 2 PCS
95T8014 10 11 WIRE HARNESS 1 PCS
95T8014 10506 WIRE HARNESS 1 PCS
95T8014 12 13 WIRE HARNESS 1 PCS
95T8018 30549 WIRE HARNESS 1 PCS
98TR7SWANENCF Remote Control 1 PCS
M1V 140 10120 SCREW M4X10 6 PCS
M1V 330 3128 SCREW 4 PCS
M1V 330 4128 SCREW M3X4 2 PCS
M1V 330 4128 SCREW M3X4 4 PCS
M1V 330 6128 SCREW 1 PCS
M1V 330 6128 SCREW 1 PCS
M1V 340 14120 SCREW 4 PCS
M1V1140 4128 SCREW 4X6 1 PCS
M1V1730 6128 SCREW 5 PCS
M1V1730 6128 SCREW 4 PCS
28
Norcent LT2722
Q1V 330 12120 SCREW 3X12mm 5 PCS
Q1V 930 6128 SCREW (T3X6) 5 PCS
Q1V1030 12128 SCREW 14 PCS
705LF84FB34006 TV BACK COVER ASS'Y 1 PCS
E750L 750VVMH0 W12NC CMO 27" NORCENT CONSIGN 1 PCS
AD24180A2SMT LCD ADAPTER ASS'Y FOR S 1 PCS
DCPF1205A3 DC TO DC BOARD 1 PCS
CN951 33T3802 10 PLUG 1 PCS
CN952 33T3802 12 WAFER PH-12 1 PCS
40T 45762420A S/N LABEL 1 PCS
IC922 56T 139 3A PC123Y22FZOF 1 PCS
IC924 56T 139 3A PC123Y22FZOF 1 PCS
IC925 56T 139 3A PC123Y22FZOF 1 PCS
IC942 56T 139 3A PC123Y22FZOF 1 PCS
R950 61T 20K398GB1 CEMENTR 0.39 OHM +-10% 1 PCS
R921 61T152M10458G6267 100K OHM 5% 2W 1 PCS
R905 61T153M27858G6267 0.27 OHM 5% 3W 1 PCS
R919 61T153M27858G6267 0.27 OHM 5% 3W 1 PCS
R945 61T153M47358G6267 47K OHM 5% 3W 1 PCS
C901 63T 10722410S 0.22UF 275VAC X2 1 PCS
C905 63T213J105GFA MPF CAP 1 PCS
C926 64T400K473 57 MPF CAP 1 PCS
C922 65T 1K222 2A6213 0.0022UF/1KV 1 PCS
C942 65T 1K222 2A6213 0.0022UF/1KV 1 PCS
C921 65T 1M103 3T6921 0.01uf 20% 1000V Y5V 1 PCS
C903 65T306M1022BM Y1.CAP.001UF 250VAC MUR 1 PCS
C904 65T306M1022BM Y1.CAP.001UF 250VAC MUR 1 PCS
C915 65T306M1022BM Y1.CAP.001UF 250VAC MUR 1 PCS
C970 65T306M2222BP Y1.CAP.0022UF 250V AC 1 PCS
C907 67T 40K18116K 105C EC SHAP-IN 1 PCS
C930 67T215L102 6N KY35VB1000M-L 5*25MM 1 PCS
C948 67T215L102 6N KY35VB1000M-L 5*25MM 1 PCS
C949 67T215L102 6N KY35VB1000M-L 5*25MM 1 PCS
C950 67T215L102 6N KY35VB1000M-L 5*25MM 1 PCS
C951 67T215L102 6N KY35VB1000M-L 5*25MM 1 PCS
C932 67T215L1024NL KY25VB1000M-L 10*25MM 1 PCS
C933 67T215L1024NL KY25VB1000M-L 10*25MM 1 PCS
C934 67T215L221 4R LOWE.S.R 220UFM 25V 1 PCS
C931 67T215L221 6N KY35VB220M-L 8*15MM 1 PCS
C955 67T215L471 6N KY35VB470M-L 10*20MM 1 PCS
L906 73L 174 44 TG CHOKE COIL 1 PCS
L953 73L 174 46LSG FILTER 1 PCS
L952 73L 174 47LSG LINE FILTER 1 PCS
L903 73L 174 48 LG LINE FILTER 1 PCS
L904 73L 174 49LSG LINE FILTER 1 PCS
L905 73L 174 52LSG CHOKE COIL 1 PCS
L901 73L 253156 TH CHOKE COIL 1 PCS
L902 73L 253156 TH CHOKE COIL 1 PCS
L922 73T 253155 L CHOKE 1 PCS
L923 73T 253155 L CHOKE 1 PCS
T951 80LL26T 2 TG X'FMR 1 PCS
T921 80LL26T 3 TG XFMR 1 PCS
D922 93T1020 752T UF4003PT 1 PCS
D943 93T1020 752T UF4003PT 1 PCS
D920 93T1100 1052T BA159GPT 1 PCS
D921 93T1100 1052T BA159GPT 1 PCS
D941 93T1100 1052T BA159GPT 1 PCS
29
Norcent LT2722
D942 93T1100 1052T BA159GPT 1 PCS
RJ905 95T 90 26 WIRE HARNESS 1 PCS
CN921 95T8013 12 8 WIRE HARNESS 1 PCS
705L F94 57 01 Q901/Q941/D902 ASS'Y 1 PCS
705L F94 57 02 Q942/Q943/D927/D928 ASS 1 PCS
705L F94 56 01 IC981 ASS'Y 1 PCS
705L F94 87 01 CN901 ASS'Y 1 PCS
705L F94 93 01 BD901 ASS'Y 1 PCS
AD24180A2AI LCD ADAPTER ASS'Y FOR A 1 PCS
IC941 56T 379 38 L6565D SO-8 1 PCS
IC901 56V 538 8 TDA4863-2G SO-8 1 PCS
Q922 57T 417 4 CHIP PMBS3904 BY PHILIP 1 PCS
Q924 57T 760 5 DTC144WKA BY FOHM SMT 1 PCS
R922 61V0805000 CHIP 0OHM 1/10W 1 PCS
R944 61V0805000 CHIP 0OHM 1/10W 1 PCS
R947 61V0805000 CHIP 0OHM 1/10W 1 PCS
R954 61V0805100 CHIP 10OHM 1/10W 1 PCS
R955 61V0805100 CHIP 10OHM 1/10W 1 PCS
R920 61V0805100 2F CHIP 10K OHM 1/8W 1% 1 PCS
R940 61V0805100 2F CHIP 10K OHM 1/8W 1% 1 PCS
R931 61V0805102 CHIPR 1K OHM +-5% 1/8W 1 PCS
R934 61V0805102 CHIPR 1K OHM +-5% 1/8W 1 PCS
R909 61V0805103 CHIP 10K OHM 1/10W 1 PCS
R910 61V0805103 CHIP 10K OHM 1/10W 1 PCS
R965 61V0805103 CHIP 10K OHM 1/10W 1 PCS
R964 61V0805104 CHIPR 100K OHM+-5% 1/8W 1 PCS
R959 61V0805115 2F CHIP 11.5K OHM 1/10W 1% 1 PCS
R960 61V0805133 CHIPR 13KOHM +-5% 1/8W 1 PCS
R961 61V0805152 CHIPR 1.5K OHM +-5% 1/8 1 PCS
R914 61V0805191 2F 19.1K OHM 1/8W 1% 1 PCS
R957 61V0805200 9F CHIP 20 OHM 1/10W 1% 1 PCS
R958 61V0805202 CHIP 2KOHM 1/8W 1 PCS
R936 61V0805220 CHIP 22 OHM 5% 0805 1/8 1 PCS
R967 61V0805222 CHIP 2.2KOHM 5% 0805 1/ 1 PCS
R951 61V0805242 CHIP 2.4KOHM 1% 1/8W 1 PCS
R949 61V0805273 CHIP 27KOHM 5% 0805 1/8 1 PCS
R930 61V0805280 3F CHIP 280K OHM 1/10W 1 PCS
R948 61V0805330 CHIP 33 OHM 5% 1/10W 1 PCS
R904 61V0805470 CHIP 47 OHM 1/10W 1 PCS
R933 61V0805471 CHIPR 470 OHM+-5% 1/8W 1 PCS
R935 61V0805472 CHIRP 4.7K OHM +-5% 1/8 1 PCS
R932 61V0805510 2F CHIP 51K OHM 1/10W 1 PCS
R953 61V0805563 CHIP 56K OHM 1/8W 1 PCS
R952 61V0805682 CHIP 6.8KOHM 5% 0805 1/ 1 PCS
R903 61V0805683 CHIPR 68K OHM+-5% 1/8W 1 PCS
R925 61V0805689 CHIP 6.8OHM 5% 1/8W 1 PCS
R908 61V1206000 CHIP 0 OHM 1/8W 1 PCS
RJ901 61V1206000 CHIP 0 OHM 1/8W 1 PCS
RJ903 61V1206000 CHIP 0 OHM 1/8W 1 PCS
R983 61V1206100 3F CHIP 100K OHM +-1% 1/4W 1 PCS
R923 61V1206100 4F 1M OHM 1/4W 1% 1 PCS
R924 61V1206100 4F 1M OHM 1/4W 1% 1 PCS
R968 61V1206101 CHIP 100 OHM 5% 1/4W 1 PCS
R962 61V1206102 CHIP 1K OHM 5% 1/4W 1 PCS
R926 61V1206205 CHIP 2M OHM 5% 1/4W 1 PCS
R927 61V1206205 CHIP 2M OHM 5% 1/4W 1 PCS
R929 61V1206330 CHIP 33 OHM 5% 1/4W 1 PCS
30
Norcent LT2722
R946 61V1206330 CHIP 33 OHM 5% 1/4W 1 PCS
R974 61V1206330 CHIP 33 OHM 5% 1/4W 1 PCS
R911 61V1206330 3F 330K OHM 1/4W 1% 1 PCS
R912 61V1206330 3F 330K OHM 1/4W 1% 1 PCS
R913 61V1206330 3F 330K OHM 1/4W 1% 1 PCS
R916 61V1206332 CHIP 3.3KOHM 1/8W 5% 1 PCS
R917 61V1206332 CHIP 3.3KOHM 1/8W 5% 1 PCS
R973 61V1206470 CHIP 47OHM 5% 1/4W 1 PCS
R915 61V1206472 CHIP 4.7KOHM 5% 1/4W 1 PCS
R928 61V1206562 CHIP 5.6K OHM 1/4W 1 PCS
R906 61V1206624 CHIP 620K 5% 1/4W 1 PCS
R907 61V1206624 CHIP 620K 5% 1/4W 1 PCS
R901 61V1206684 CHIP 680K OHM 1/8W 1 PCS
R902 61V1206684 CHIP 680K OHM 1/8W 1 PCS
C911 65T0805102 32 CHIP 1000P 50VX7R 0805 1 PCS
C927 65T0805102 32 CHIP 1000P 50VX7R 0805 1 PCS
C913 65T0805103 32 10NF/50V/0805/X7R 1 PCS
C936 65T0805103 32 10NF/50V/0805/X7R 1 PCS
C910 65T0805104 32 CHIP 0.1U 50V X7R 1 PCS
C914 65T0805104 32 CHIP 0.1U 50V X7R 1 PCS
C920 65T0805104 32 CHIP 0.1U 50V X7R 1 PCS
C924 65T0805104 32 CHIP 0.1U 50V X7R 1 PCS
C935 65T0805104 32 CHIP 0.1U 50V X7R 1 PCS
C937 65T0805104 32 CHIP 0.1U 50V X7R 1 PCS
C938 65T0805104 32 CHIP 0.1U 50V X7R 1 PCS
C939 65T0805104 32 CHIP 0.1U 50V X7R 1 PCS
C953 65T0805104 32 CHIP 0.1U 50V X7R 1 PCS
C956 65T0805104 32 CHIP 0.1U 50V X7R 1 PCS
C965 65T0805104 32 CHIP 0.1U 50V X7R 1 PCS
C959 65T0805334 22 0.33UF+-10% 25V X7R 080 1 PCS
C946 65T0805471 31 CHIP 470PF 50V NPO 1 PCS
C958 65T0805471 31 CHIP 470PF 50V NPO 1 PCS
C912 65T0805474 22 CHIP 0.47UF 25V X7R 1 PCS
C964 65T1206103B2M6213 CHIP 0.01UF 630V X7R 1 PCS
D904 93T 6432V LL4148-GSO8 SMD BY VISH 1 PCS
D905 93T 6432V LL4148-GSO8 SMD BY VISH 1 PCS
D906 93T 6432V LL4148-GSO8 SMD BY VISH 1 PCS
D907 93T 6432V LL4148-GSO8 SMD BY VISH 1 PCS
D923 93T 6432V LL4148-GSO8 SMD BY VISH 1 PCS
D924 93T 6432V LL4148-GSO8 SMD BY VISH 1 PCS
D925 93T 6432V LL4148-GSO8 SMD BY VISH 1 PCS
D926 93T 6432V LL4148-GSO8 SMD BY VISH 1 PCS
D929 93T 6432V LL4148-GSO8 SMD BY VISH 1 PCS
D944 93T 6432V LL4148-GSO8 SMD BY VISH 1 PCS
D945 93T 6432V LL4148-GSO8 SMD BY VISH 1 PCS
D946 93T 6432V LL4148-GSO8 SMD BY VISH 1 PCS
D947 93T 6432V LL4148-GSO8 SMD BY VISH 1 PCS
D949 93T 6432V LL4148-GSO8 SMD BY VISH 1 PCS
D950 93T 6432V LL4148-GSO8 SMD BY VISH 1 PCS
ZD921 93T 39S 10 T RLZ6.8B LLDS 1 PCS
ZD944 93T 39S 15 T RLZ15B 1 PCS
ZD943 93T 39S 24 T RLZ 5.6B LLDS 1 PCS
ZD942 93T 39S 33 T PTZ 13B 1 PCS
ZD931 93T 39S 38 T PTZ 9.1B 1 PCS
ZD945 93T 39S 41 T RLZ24B LLDS 1 PCS
ZD946 93T 39S 42 T RLZ27B LLDS 1 PCS
D901 93T3060 10 ML35PT 1 PCS
31
Norcent LT2722
CN901 6V 31500 EYELET 2 PCS
L904 6V 31502 1.5MM RIVET 4 PCS
L906 6V 31502 1.5MM RIVET 4 PCS
NR901 6V 31502 1.5MM RIVET 2 PCS
NR902 6V 31502 1.5MM RIVET 2 PCS
T921 6V 31502 1.5MM RIVET 4 PCS
T951 6V 31502 1.5MM RIVET 4 PCS
C941 65T 1M103 3T6921 0.01uf 20% 1000V Y5V 1 PCS
715T1180 3 PCB 1 PCS
R938 61T 17247152T 470OHM 5% 1/4W 1 PCS
R966 61T 60110252T 1K OHM +-2% 1/6W 1 PCS
R937 61T 60168152T 680 OHM +-2% 1/6W 1 PCS
L921 71T 55 23 S FERRITE BEAD K-TYPE 1 PCS
L951 71T 55 23 S FERRITE BEAD K-TYPE 1 PCS
F901 84V 55 4 FUSE 1 PCS
IC923 56T 158 10 T IC 1 PCS
IC943 56T 158 10 T IC 1 PCS
Q945 57T 419501 T KTC945P 1 PCS
Q947 57T 419501 T KTC945P 1 PCS
Q946 57T 420501 T KTA733P 1 PCS
Q948 57T 420501 T KTA733P 1 PCS
Q926 57T 566 1 2N5060RLRAG 1 PCS
C908 65T517M103 3T 0.01UF 20% 500V Y5P 1 PCS
C909 67T 2151007NT 10UF 50V NCC 5*11MM 1 PCS
C923 67T 2151007NT 10UF 50V NCC 5*11MM 1 PCS
C957 67T 2151007NT 10UF 50V NCC 5*11MM 1 PCS
C925 67T 2154707NT 47UF 50V NCC 5*11MM 1 PCS
C944 67T 2154707NT 47UF 50V NCC 5*11MM 1 PCS
C945 67T 2154707NT 47UF 50V NCC 5*11MM 1 PCS
DC1205A3SMT DC TO DC BOARD FOR SMT 1 PCS
CN801 33T800913Z H PIN HEADER 1*13 R/A 1 PCS
C806 67T215L471 2K LOW ESR 470UF 10V 1 PCS
C807 67T215L471 2K LOW ESR 470UF 10V 1 PCS
C801 67T215V221 4K EC 220F 25V 1 PCS
IC801 56T 133 32 NS LM3485 1 PCS
Q801 57T 763 3 AO4411L SO-8 BY AOS SMT 1 PCS
R803 61V0603200 2F CHIP 20K OHM 1/16W 1% 1 PCS
R801 61V0603360 2F chip 36k ohm 1/10w 1% 1 PCS
R802 61V0603620 2F CHIP 62K OHM 1/16W 1% 1 PCS
R804 61V1206220 CHIP 22OHM 5% 1/8W 1 PCS
C803 65T0603102 32 CHIP 1000PF 50V X7R 1 PCS
C804 65T0603102 32 CHIP 1000PF 50V X7R 1 PCS
C809 65T0603104 32 CHIP 0.1UF 50V X7R 1 PCS
C805 65T0603471 31 CHIP 470PF 50V NPO 1 PCS
C808 65T0805102 32 CHIP 1000P 50VX7R 0805 1 PCS
C810 65T0805102 32 CHIP 1000P 50VX7R 0805 1 PCS
C802 65T0805105 22 CHIP 1UF 25V X7R 0805 1 PCS
L801 73T M5822020T 22UH +-20% 1 PCS
D801 93T8004 2 SBM84PT 1 PCS
715V1278 4 PCB 1 PCS
12T 372 5 MICA 1 PCS
Q901 57T 667 19 2SK3523-01R 1 PCS
Q941 57T 667 21 STP10NK70ZFP 1 PCS
90T 426 1 HEAT SINK 1 PCS
D902 93T 220 23 FMX-G26S 1 PCS
M1T1730 12128 SCREW 3 PCS
5T 42 1 CUSHION 2 PCS
32
Norcent LT2722
12T 372 1 MICA 2 PCS
Q942 57T 600 45 IRF3415 T0-220AB 1 PCS
Q943 57T 600 45 IRF3415 T0-220AB 1 PCS
90T 428 1 HEAT SINK 1 PCS
D927 93T 60239 FME-210B T0-220 1 PCS
D928 93T 60247 FME-220A 1 PCS
M1T1730 10128 SCREW M3X10 4 PCS
IC981 56T 379 40 TOP246YN T0-220-7C 1 PCS
90T 427 1 HEAT SINK 1 PCS
M1T1730 8128 SCREW M3x8 1 PCS
CN901 87T 501 22 RF AC SOCKET 1 PCS
95T 900 42 WIRE HARNESS 1 PCS
96T 29 4 SHRINK TUBE UL/CSA 3 PCS
90T 425 1 HEAT SINK 1 PCS
BD901 93T 50460 18 D10XB60 1 PCS
M1T1730 10128 SCREW M3X10 1 PCS
SMTFF84KMGNCT MAIN BRD AUTO INS. 1 PCS
CN606 33T3278 12 12P PLUG B12B-XHA/JS B1 1 PCS
CN604 33T3802 2H WAFER 2P RIGHT ANGLE 1 PCS
CN609 33T3802 3H WAFER 3P RIGHT ANGLE 1 PCS
CN602 33T3802 5H WAFER 5P RIGHT ANELE PI 1 PCS
CN600 33T380210H WAFER 10P RIGHT ANGLE P 1 PCS
CN605 33T801730A H PIN HEADER 30P 2.0MM 1 PCS
44T3231508512 CHIELD D-SUB 1 PCS
R705 61T152M100 64 10OHM 5% 2W 1 PCS
R706 61T152M100 64 10OHM 5% 2W 1 PCS
R143 61T152M220 64 22 OHM 5% 2W 1 PCS
R144 61T152M220 64 22 OHM 5% 2W 1 PCS
R145 61T152M220 64 22 OHM 5% 2W 1 PCS
R146 61T152M220 64 22 OHM 5% 2W 1 PCS
C609 64T176J104 0T 0.1UF +-5% 50/63V 1 PCS
C610 64T176J104 0T 0.1UF +-5% 50/63V 1 PCS
C613 67T215C102 6K LOW ESR 1000uf 35v 1 PCS
C614 67T215C102 6K LOW ESR 1000uf 35v 1 PCS
C635 67T215C102 6K LOW ESR 1000uf 35v 1 PCS
C649 67T215C102 6K LOW ESR 1000uf 35v 1 PCS
L600 73T 253158 L CHOKE COIL 1 PCS
L601 73T 253158 L CHOKE COIL