Saturday, October 18, 2014

MITSUBISHI WS-A48 - VS-A50 - WS-A55 - WS-A65 PTV – HOW TO ADJUST CONVERGENCE


HOW TO ADJUST CONVERGENCE _ MITSUBISHI WS-A48 - VS-A50 - WS-A55 - WS-A65 Projection TV 
Convergence Adjustment Mode
Press MENU-2-2-5-9
When the Convergence Mode is activated, the display at the right appears on a Green Crosshatch.
Selecting the HD or SD Mode
1. Select the Signal Source before entering the Convergence Mode, either an NTSC or HD source.
2. Enter the Convergence Mode (MENU-2-2-5-9)
* If the signal source is NTSC, the SD mode is activated.
* If the signal source is HD 1080i, the HD mode is activated.
3. Activating the HD mode when no HD signal is available.
* Activate the Factory Option Menu (MENU-2-2-7-0)
* Use the “Adjust” keys to select “DTV Port” and press “Enter” to change the setting to “1080i”.  Sequence = “Auto”-”480i”-480-p”-”1080i”.
Ignore any loss of sync while changing modes.
 Exit the Option Menu (Press “MENU” twice).
* Select the DTV Inputs as the signal source (INPUT button).
* Activate the Convergence Mode ... the Convergence mode will be in the HD mode and the internal crosshatch is displayed.

After adjusting Convergence, be sure to set the DTV Port back to AUTO.
• Select an analog input as the signal source (INPUT button).
• Activate the Option Menu (MENU-2-2-7-0).
• Use the “Adjust” keys to select “DTV Port and press “Enter” to change the setting from “1080i” to “AUTO”.
• Exit the Option Menu (Press MENU twice).

Convergence Mode Functions
In the Convergence Mode there are three main Functions (Categories).
* Pressing “6” activates CONV MISC
* Pressing “5” activates COARSE CONV
* Pressing “4” activates FINE CONV
CONV MISC (Press 6)
This mode is used to preset data values controlling the Convergence Generator, and to perform the HV Regulation adjustment.
Use the VIDEO button to select an item.
Use the ADJUST buttons to change data.
Note: When Item “1 HVOL” is selected the screen goes black except for the data display.  This occurs since a black screen is required when making the HV Regulation adjustment.
COARSE CONV (Press 5)
There are four Sub Functions in the Coarse mode, COARSE GREEN, COARSE RED, COARSE BLUE and DF.
* COARSE GREEN .... used to make Coarse Raster Geometry Adjustments.
* COARSE RED ... used to make Coarse Red Convergence Adjustments.
* COARSE BLUE ... used to make Coarse Blue Convergence Adjustments.
* DF ... used to preset data values controlling the Dynamic Beam Focus circuit drive signal.
1. Use AUDIO button to select a Sub Function
2. Use the VIDEO button to select an Adjustment Item.
3. Use the ADJUST buttons to change data.
FINE CONV (Press 4)
Sub Functions
This mode is used to perform Fine Raster Correction, and Fine Red and Blue Convergence Adjustments.
There are three Sub Adjustment Functions, selected with the AUDIO button:
* FINE GREEN .... a Green Cross-hatch is displayed, for Fine Raster Corrections.
* FINE RED.... a White Cross-hatch is displayed, for Fine Red Convergence Adjustments.
* FINE BLUE.... a White Cross-hatch is displayed, for Fine Blue Convergence Adjustments.
Cursor
In the Fine mode a Cursor is added to the Cross-hatch. The ENTER button toggles the Cursor between two modes:
* MOVE (blinking Cursor) .... use the ADJUST buttons to select any of 64 points on the Cross-hatch.
* ADJUST (Non blinking Cursor).... the ADJUST buttons adjust the active colour at the current Cursor position, horizontally or vertically.
Cursor Coordinates
Specific intersections in the Cross-hatch are assigned vertical and horizontal coordinates.
These are shown in the preceding diagram. The Cursor can only be moved to those positions that have coordinates assigned. If the Cursor is at coordinates outside the screen area, the Cursor will not be visible. Use the ADJUST buttons to move the Cursor to an intersection on the screen.
Display
The on-screen display changes in the Fine mode.
The display shows the vertical and horizontal data for the current Cursor Position, and the horizontal and vertical coordinates for that position.
Saving Data and Exiting the Convergence Mode
Press MENU twice to exit the Convergence mode, data is automatically saved.
Note: If power is interrupted prior to properly exiting the Convergence Mode, changes in adjustment data will not be saved.
ADJUSTMENT ITEM LIST