AKAI LTA-26C902 - LTA-32C902 - LTA-37C902 - SERVICE MODE [FACTORY MODE] & ADJUSTMENT METHODS
- Enter into child lock of main menu in TV mode, press “OK, the password input box will appear;
- Use remote control to input the follows in order:7,red key,9,blue key, then you can enter into factory mode menu. After entering into factory mode menu, sign of the factory menu M will appear.
FACTORY MENU & SETUP
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M
Index: 1
HWUC_BRI 0x1F
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The M denotes entering into factory mode now, the figures of
index denotes the index number now,the
HWUC_BRI denotes the name of adjusting item now, the 0X1F denotes the
numerical value.
Each adjusting item have only one index number ,the
operator press the numeric key or press P+/P- directly.
NOTE:
- If no especial demand, do not enter into the 20th item(design mode);
- When tuning the 16th item ,the storage data will be cleaned off, therefore, if not necessary ,please do not adjust it, the items of index number 1,2,3,4,5,6 are not necessary to adjust.
ADJUSTMENT METHODS
- Select the adjusting item
- You can skip to the adjusting items by pressing the number key, also can select the adjusting item in the order of P+/P-.when pressing the number key, if the adjusting item is 1~9,input the corresponding number keys and press down “OK”, if the adjusting items tens digit, input a tens digit. For example, press number key 8 when adjusting the volume, you can see the color which become green, then press down “OK”, the color of index number turns red, So you already selected corresponding volume adjusting item.
- If adjust DVD preset, first input 1,then input 3,you can adjust DVD preset.
- Adjust it according to the operating key in above list. For one act operation ,press OK/V+. example Auto Color, for some variable add/reduce, Example Volume, press V+/V- .
The illuminate of white balance and Auto Color adjustment
method
- Index 11 is corresponding to manual balance ,press“OK” or “V+” to display three corresponding variable, press “P+/P-”to select, press “V+/V-” to adjust, press down menu key to exit.
- The index of Auto Color is 12,press “OK”or “V+” to do color revision, then the adjusted value will display.
- Index number of BBE plus adjustment is 22 and 23,adjust it by adjusting “V+/V-”,the value of W270F8E and W320F8E are set 0X09,but the W370F8E is set 0X0F.
- Press down the [DISPLAY] first before switching the program number in factory mode, press P+/P- to switch before the display content do not disappear;
- All menu functions are on in factory mode, if necessary you can use menu to check the items and effect test.
- Before adjusting it, put the first LCD TV in AV condition, and the image in standard condition, white balance adjust frock send the white vertical signal output from video into AV, adjust output range of balance adjust frock, make the brightness of the LCD TV 200±20cd/m2 (use CHROMA 7120 color analyze instrument to obtain the brightness),then fix the video output range of white balance adjust frock(until all the LCD TV are adjusted).
- Enter into white balance adjusting item of factory mode, change R,G,B value(try best to adjust this 3 value biggest) .
SYMPTOMS AND CORRECTION
Display card of PC no image in DVI.
Reason and Resolve: If some display card of DVI can not receive the data when turning
on the TV, there is no output; if pull out the DVI line abruptly, there is also
no DVI output; Before starting PC, connect the DVI line with LCD TV steadily,
So DVI can receive the correct date from DDC (Display Data Channel) when
turning on the TV,DDC is in chassis 24LC21.
No picture but sound, on LOGO when turning on the TV,
background light is bright.
Reason and Resolve: Check the connect line in up screen, and
connect the line.
No picture no sound ,no snowflake in TV mode, but AV is
normal.
Reason and Resolve: Check the outside of high frequency (also
bus and power supply), there is no problem, but no output from high frequency,
so the tuner is disabled.
LCD TV can not be controlled.(inc red lamp is on but the TV
is off, remote control and local keys can not control the TV ,etc.)
Reason and Resolve the LCD TV cannot work abruptly, power
off and turning it on again.
