How to do convergence adjustments to a projection television

CONVERGENCE ADJUSTMENT 
Notes: In the convergence mode, if the first two displayed characters are "P", it means PAL, and if "Q", it means NTSC. In the two modes of DVD, the character display is the same as the two above-mentioned modes. "V" stands for VGA mode. These characters are omitted in the following OSD display description.

CONVERGENCE ADJUSTMENT IN PAL

With receiving of PAL signal, and the volume to 0, press and hold MUTE button until the red "MUTE" character becomes three colors (or white), then press MENU button on front panel of TV to enter "S" mode (Press "S" button on the jig to enter "S" mode directly when in production). Press yellow RECALL button to enter the phase of convergence adjustment, and the red convergence crosshatch displays in the screen. Press DISPLAY button to switch into green crosshatch signal.

Note" Generally speaking, you can go to Step IV, V, VI and VII directly.

Press TEXT button to clear fine/coarse adjusted data of the six channels in the RAM of convergence IC.

Note: Normally speaking, do not reset the RPTV to0. If it is necessary, exit convergence mode and time it before your resetting.

Adjustment of static convergence in green. Press PIP button until the video image super-imposes crosshatch-testing signal. Press PICTURE MODE SELECTION button until character "DCGH" appears, then press POSITION UP/DOWN buttons to call up "DCGH"( DCGV). Press VOLUME UP/DOWN buttons to make the center of green line (field) of 5-CH video test pattern locate at the center of the screen. Then press PIP button to conceal the video image.

Phase adjustment 

Adjustment of H. fine adjustment and phase of horizontal test 

Instate of crosshatch in green, press PICTURE MODE SELECTION button to call up " FINE NODE", and press SWAP button to switch the cursor into green. Press MUTE button until "P LOCK" appears. Now press POSITION UP button to display the GV value of fine adjusted convergence at H#4/V#4 point as the  maximum value on the screen. 

Press AV button to call up "FINE PHASE", Press VOLUME UP/DOWN buttons to make the peak appear at the vertical line at the right of horizontal center. 

Press AV button to call up "TEST PHASE". Adjust VOLUME UP/DOWN button to make the cursor locate at the peak. 

Reset GV value.

Setting of start lines of fine-adjusted convergence (setting of STARTLINES) 

In the state of crosshatch in green, press PICTURE MODE SELECTION button to enter "FINE MODE", then press VOLUME UP/DOWN buttons to set the GH fine adjustment value at H#4/V#4 as maximum, and make the peak displays on the screen. 

Press AV button to call up "STARTLINES", then press VOLUME UP/DOWN buttons till the peak displays at the center of the field. (Note: "START LINES" value can only be odd number). 

Return the GH fine adjusted value.

 Press PICTURE MODE SELECTION button to display "DCRH". Press POSITION UP/ DOWN buttons to call up "KGV3", and press VOLUME DOWN button to set KGV3 as a larger data. If the cursor is off the horizontal center, press AV button to call up "COAR PHASE", then press VOLUME UP/DOWN buttons to return the cursor to the original position.

Press PICTURE MODE SELECTION button until "DCRH" displays on the screen. Press POSITION UP/DOWN buttons to call up "KGH3", and adjust VOLUME UP/DOWN but-tons to set "KGH3" as a larger data. If the cursor is off the field center, press AV button to call up "START VALUE", then press VOLUME UP/DOWN buttons to return the cursor to the original position.

"COUNTUP" Setting

Press and hold AV button till "COUNTUP" appears, and press VOLUME UP/DOWN buttons to make crosshatch signal basically be straight in the V/H

direction. (The recommended COUNTUP data: PAL 3D, and NTSC 3D.

Coarse-adjustment of convergence in green

Press PICTURE MODE SELECTION button till "DCRH" appears, then press POSITION UP/DOWN buttons to select coarse adjustment order as follows:

Trim horizontal skew in green (KGH3).

Trim green horizontal pincushion distortion (KGH1)

Trim green horizontal amplitude (KGH2).

Trim green field pincushion distortion (KGV2).

Trim field keystone distortion (KGV1).

Trim green field skew (KGV3).

Fine-adjustment of convergence in green

Press PICTURE MODE SELECTION button to call up "FINE MODE", press SWAP but line to turn the cursor into green. Press DIGIT SELECTION button to select the point or line adjustment. Press MUTE button to move or fix the cursor: (When OSD is "POINT MOVE" or "LINE MOVE", press VOLUME UP/DOWN or POSITION.UP/DOWN buttons to move the cursor up, down, left and right. When OSD is "POINT LOCK" or "LINE LOCK", press VOLUME UP/DOWN or POSITION UP/DOWN buttons to adjust the dot or line data).

Notes:

•  In the process of fine adjustment, the cursor will change into 3 colors automatically. Press MUTE button after adjusting a data, the cursor will return to original color.

•  It is recommended to perform trimming fine errors from the center of the screen toward out-side area in circumference inaccordance with such an order as whirlpool-shape. In other word, at first, trim fine error at the point of H#4/V#4 of the screen center, next trim each fine point in circumference around outside of the 8 points, then trim other points in the same way.

•  If adjusting one point to increase fine error of nearby ones, which are not adjusted, you should adjust the data at your target point to make the error of nearby ones in the permissible range. Otherwise the fine adjustment data of nearby point might not meet the requirement even if the data reaches maximum.

•  You can save the adjusted data by pressing MENU button. When OSD displays "DATA OK", the data is saving, and when " DATA OK" disappears, it indicates the saving is complete.

•  When adjusting the parameters of coarse and fine adjustment in green, it will activate the convergence of the other two guns at the same time.

Adjustment of convergence in red

In convergence mode, press DISPLAY button to switch crosshatch state into red and green.

Adjustment of static convergence in red, adjust "DCRH" and "DCRV" of coarse adjustment convergence, so that superimpose the center of line-field in red with center of line-field in green.

Trim horizontal skew in red (KRH2)

Trim horizontal linearity distortion in red (KRH1)

Trim horizontal amplitude in red (KRH3)

Trim field keystone in red (KRV1)

Trim field skew in red (KRV2)

Adjusting procedures of fine adjustment data in red is the same as that in green, but crosshatch on the screen is yellow.

Adjustment of convergence in blue

In convergence state, press DISPLAY button so that crosshatches in red and blue appear on the screen, and press PIP button to make the cursor become blue.

Adjustment of static convergence in blue. Press and hold PICTURE NODE SELECTION button until "DCBH" appears, Press POSITION UP/DOWN buttons to call up "DCBH" and "DCBV", and press VOLUME UP/ DOWN buttons to position the line-field center of convergence in blue at the center of screen.

Trim horizontal skew in blue (KBH2),

Trim horizontal linearity distortion in blue (KBH1).

Trim horizontal amplitude in blue (KBH3).

Trim field keystone in blue (KBVI).

Trim field skew in blue (KBV2).

Saving 

Press MENU button to save the adjusted data. 

Press STILL/MOVABLE PICTURE ADJUSTMENT button to copy the adjusted data to the corresponding mode of DVD. 

CONVERGENCE ADJUSTMENT IN OTHER MODES 

Repeat the above-mentioned procedures for NTSC and VGA. 

CONVERGENCE ADJUSTMENT IN DVD MODE 

In DVD mode, it requires fine trimming PAL and NTSC.