HOW TO ADJUST AOC-LT 2722 'NORCENT' LCD TV SERVICE MODE PARENTAL LOCK and UNLOCK PROCEDURE

DID FORGET PASSWORD? 

Chang the password; default password is; [1111], follow the instructions on screen.  If you have forgotten your password, do the following.

• "POWER OFF => MENU => V-CHIP => MUTE" to revert the default password to (1111)

SERVICE MODE

There are two types of service mode to this set.

Engineer Mode & Factory Mode

Engineer Mode:

• Press number key [100 => 9 => 9 => 1] to enter into Engineer Mode.
• Press "Menu" key repeat to ADC page, and select "EPrint" and press 'Right' key to initial EEPROM.
• Press number key [100 => 9 => 9 => 9] and enter into Factory Mode.

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 adjustment.

1. ADC Adjustment => [AL = Auto Level Adjustment, ALY = Auto Level Adjustment for YUV mode. RG,BG,GG => R,G,B gain adjustment.  RB,GB,BB = R,G,B Bias adjustment.]
2. SCALER adjustment. [CO,BR => Contrast and Brightness adjustment.  RG,GG,BG => R,G,B gain adjustment.  RB,GB,BB => R,G,B Bias adjustment.  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.  VC => 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.

GAIN ADJUSTMENT

• ADJUST 9300 COLOR TEMPERATURE

1. Switch the chroma -7120 to RGB mode, by pressing "Mode" button.
2. Switch the MEM. Channel to Channel 01, with Up or Dn arrow on chroma-7120.
3. The LCD indicator on chroma-7120 will show [x=283, y=297, Y>380]
4. Change the "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. Repeat the item 4 & 5 to make R,G,B value are the same.
8. Select Cursor to "S9" and press "Right" arrow to save the value.

Turn Power Button OFF to quit from Factory Mode.

• Auto Level of PC should be adjusted with TIMG 127, PATN 42or 16 GRAYS screen.
• It should be under White Picture while adjusting the color temperature  of all display modes.

ADJUST 6500 COLOR TEMPERATURE

1. Switch the Choroma-7120 to RGB mode, by pressing "Mode" button.
2. Switch the MEM.  Channel to Chanel 02, with Up or Dn arrow on chorma-7120
3. The LED indicator on chroma-7120 will show [x=313, y=329, Y>380].
4. Change the source input to PC.
5. Select "AL" and press 'right' arrow to do auto-level.
6. Adjust GG up to G value at chroma-7120 is 100.
7. Adjsut 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.

ADJUST VIDEO COLOR TEMPERATURE

1. Switch the chorma-7120 toRGB mode, by pressing "Mode" nutton.
2. Switch the MEM.  Channel to Channel 3, with Up or Dn arrow on chroma-7120.
3. The LCD indicator on chroma-7120 will show [x=283,y=297, Y>450].
4. Change 'source input' to [AV-1].
5. Adjust GG up to G value at chroma-7120 not going up; set the g value is max.
6. Adjust 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 to same.
8. Select cursor to "ST" and press 'right' arrow to save the value.