Wednesday, November 28, 2012

SONY FD TRINITRON - KV-28FQ86B _ KV-32-FQ86B SERIES _ SERVICE MODE AND ADJUSTMENT DETAILS.



PROGRAMMING THE REMOTE COMMANDER FOR OPERATION IN SERVICE MODE.

Service adjustments to this model can be performed using the supplied remote Commander RM-945.

  • Press and hold the left Mode Select button until the VCR and DVD LED’s flash.
  • Press 99999. The TV LED should light.  The remote commander is now set to Service Mode.
  • To return the remote commander to normal operation mode repeat step 1. then press 00000. The TV LED should light.  The remote commander is now set to normal mode.
SETTING THE TV INTO SERVICE MODE
  • Program the remote commander for operation in Service Mode as described above.
  • Turn on the TV main power switch.
  • Press the ‘aux/video’ standby button on the remote commander twice.  ‘TT ’ will appear in the upper right corner of the screen.
  • Other status information will also be displayed.
  • Press ‘MENU’ on the remote commander to obtain the following menu on the screen.
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Service Main Menu:AE6BA/Y (v0.26D) NVM VERSION:04H

Service                                                                                  >
Design
Error

Select: UP/DN Select Item: RIGHT  FACTORY INFO:FFH FFH 03H
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  • Move to the corresponding adjustment item using the up or down arrow buttons on the Remote Commander.
  • Press the right arrow button to enter into the required menu item.
  • Press the ‘aux/video’ button on the Remote Commander to quit the Service Mode when all adjustments have been completed.
FOCUS ADJUSTMENT
  • Receive a television broadcast signal.
  • Normalize the picture setting.
  • Adjust the focus control located on the flyback transformer to obtain the best focus at the center of the screen.  Bring only the center area of the screen into focus, the magenta ring appears on the screen. In this case, adjust the focus to optimize the screen uniformly.

# Potmeter at the top [marked Red] is Focus adjustment.
# Potmeter at the bottom [marked Green] is Screen (G2) adjustment.

SCREEN (G2) ADJUSTMENT
  • Input a dot signal from the pattern generator.
  • Set the Picture, Brightness and Color to minimum.
  • Apply 175V DC from an external power supply to the R, G and B cathodes of the CRT.
  • Whilst watching the picture, adjust the G2 control [SCREEN] located on the flyback transformer to the point just before the flyback return lines disappear.
WHITE BALANCE ADJUSTMENT [TV MODE]
  • Input an all-white signal from the pattern generator.
  • Program the Remote Commander for operation in Service Mode.
  • Enter into the ‘Service Mode’ by pressing ‘AUX/VIDEO’ button twice and ‘MENU’ on the Service Commander.
  • Select ‘Service’ from the on screen menu display and press ‘Right Arrow’.
  • The ‘Service’ menu will appear on the screen.
  • Select ‘Picture’ from the on screen menu and press right arrow.
  • Select ‘Picture settings’ from the on screen menu and press right arrow and set the ‘Contrast_Max’ to MAX.
  • Select ‘White Balance’ from the on screen menu and press right arrow.
The ‘White Balance’ menu will appear on the screen.
  • Set the ‘Normal_PAL_RD’ to 465.
  • Adjust the ‘Normal_PAL_GD’ and the ‘Normal_PAL_BD’ so that the white balance becomes optimum.
  • Select ‘Picture settings’ from the on screen menu and press right arrow and set the ‘Contrast_Min’ to MIN.
  • Set the ‘Normal_PAL_RC’ to 121.
  • Adjust the ‘Normal_PAL_GC’ and the ‘Normal_PAL_BC’ with the left and right buttons on the commander so that the white balance becomes optimum.
  • Press the ‘OK’ button to write the data for each item.