Monday, August 20, 2012

JVC AV-20F703 SERVICE MODE & ADJUSTMENTS



TO ENTER SERVICE MODE

When replacing Memory IC
  1. Enter DATA SET mode by setting Volume to Minimum.
  2. Press Both, Volume Down button on the TV Set, and Channel Button (6) on the remote control for more than 1 second.  Address data should be appear.
  3. Address now selected should blink.  Using Volume Up / Volume Down button on the remote control, step through the addresses unit required address to be changed is reached.
  4. Press 'Enter" to select the 'Data'.  When Data is selected, it should blink.
  5. Again, step through Data, using Vol Up / Vol Dn button, until the required data value has been selected.
  6. Press 'Enter' will take back to the Addresses for further selection if necessary.
  7. Repeat (3) to (6) until all data has been checked.
  8. When satisfied correct Data has been entered, turn Power OFF (Return to Standby Mode) to finish the Data input.  The unit will now have the correct data for the new memory IC.
ON SCREEN DISPLAY ADJUSTMENT
  • In the condition of no indication on the screen, Press Volume Down button on the TV set, and Channel (9) button on the remote control for more than 1 second to appear the adjustment mode on screen.
  • Use [Channel Up / Channel Dn] button or Channel button (0 to 9) on the remote control to select options.  
  • Press "Menu" button on the remote control to end the adjustments.