Wednesday, May 08, 2013

RCA PROJECTION TV - CONVERGENCE ADJUSTMENT PROCEDURE - AUTO CONVERGENCE & MANUAL CONVERGENCE



DIGITAL CONVERGENCE ADJUSTMENT
  • The ITC222 employs a ditigal convergence circuit that makes it possible to electronically align up to 208 separate points on the screen. 3 levels of convergence adjustment is provided.
Level 1: Provides 9 adjustment points
Level 2: Provides 25 adjustment points
Level 3: Provides 195 adjustment points
CONVERGENCE SUB-MENU
  • It is recommended to adjust Levels 1 and 2 only if repairs have been made to the Convergence Signal circuitry or after CRT replacement. Before performing the Convergence Alignment procedure it is HIGHLY RECOMMENDED the Geometry Alignment of the instrument is checked.
  • Alignments must be performed in order. If Level 3 is adjusted, prior to Levels 1 or 2, all Level 3 alignments will be lost.
  • In Level 1 and 2, Press OK to select the color to be aligned. The position of the adjustment point can adjusted using the navigation keys (up, down, left and right) on the remote. Press the 2 key of the remote to move to the next adjustment point. Press the EXIT/CLEAR key to exit when completed.
  • Level 3 alignment works similar to Levels 1 and 2.  The only difference, to move to the next adjustment point press 2 (up), 8 (down), 6 (right) and 4 (left) on the remote unit. When completed with convergence, press STORE to save all changes.
  • Sensor Calibration is used to calculate a reference border for the auto convergence photo sensors.  Check the box to begin the process.  Auto convergence starts the auto convergence process.
  • Defaults enter a default submenu. Checking the box loads a set of default values from the convergence backup NVM to the Convergence IC RAM. The box will remain checked until the value is changed or store or restore is pressed in the convergence submenu.
  • Before the Convergence Alignment menu is exited, you must check Store or all settings will be lost.
MANUAL CONVERGENCE METHOD

  • Turn instrument “On”. Allow warming up for 20 minutes. Turn instrument “Off”. Enter the Service Menu holding the “Channel Down” and “Volume Down” on the FPA for 8 seconds. Enter the “Convergence Menu”.
  • Perform “Level 3” (and/or Level 1, Level 2) manual convergence as describe above.  When completed, press “Clear”, then select “Return” to go back to the main Convergence Alignment Menu.
  • Check “Store” in the main Convergence Menu. A check mark will appear in the box.  4. Select “Defaults” to enter the Default Menu.
  • Select “Store Defaults”. Press and hold OK on the Remote for 2.5 seconds. Then select “Return” to go back to the main Convergence Alignment Menu.
  • Perform “Sensor Calibration”. Select it and press “OK” {If the Sensor Calibrations successful, the software will answer by flashing a GREEN SCREEN. If the GREEN SCREEN does not appear, turn the instrument off and begin the convergence procedure again.}
  • Select “Return” to exit the Convergence Alignment Menu. NOTE: This procedure must be performed in both the 480P and 540P (1080I) modes. The initial service menu screen will indicate which mode the instrument is in.
FOR DVD MODELS (ONLY)
  • Place the instrument in the Field Service Mode.
  • Enter the DVD sub-menu.
  • Activate DVD Factory Mode by selecting the box.  Press and hold the OK button for at least 2 seconds. The screen will then show the menu shown below. This process may take several seconds.
  1. Place the instrument in the Field Service Mode.
  2. Enter the DVD sub-menu.
  3. Activate DVD Factory Mode by selecting the box.  Press and hold the OK button on the remote for at least 2 seconds. The menu will then change to the menu shown below. This process may take several seconds.
Restore Factory Settings: This will re-initialize the DVD’s NVM content using the system NVM.  OSD to Video Ratio: Aligns the ratio between the DVD Video Signal and the DVD OSD Video Signal.
This is internally adjusted by the DVD and cannot be modified.
Test Pattern 1 - 5: Provides 5 test patterns for alignment.
  1. Scaling Color 75/White, 75% Color Bars
  2. Cutoff Alignment, 140mVp/p
  3. Drive Alignment, 455mVp/p
  4. Peak White Alignment, 700mVp/p
  5. Color Temperature and Peak White 140/170/700/359/455mVp/p.
Start Software Update: Allows the DVD software to be update. The update is sent as a CDROM.
  1. Selecting this function will automatically open the DVD and switch the instrument to the DVD mode.
  2. Place the CDROM in the instrument. Follow the instructions provided on the screen.  During the update process the display will read “Updating DVD Software”.
  3. After the software update is complete, the DVD player will reboot. This may take several seconds to complete. Once it is complete, the instrument will exit the DVD Factory Mode. The display will return to the DVD sub-menu.


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