Monday, March 25, 2013

JVC AV27F703 - AV27F713 - AV27F803 - HOW TO REPLACE MEMORY IC - HOW TO ENTER SERVICE MODE



MEMORY IC REPLACEMENT
  • Switch off the power and disconnect t he power cord from the wall outlet.
  • Be sure to use a memory IC written with the initial setting data.
  • Connect the power cord to the wall outlet and switch on the power.
  • Confirm the system constant value.  [12.SYSTEM (SYS) do not adjust normally. The adjustment should not be done without signal.]
TO ENTER SERVICE MODE
  • Press the SLEEP TIMER key and set SLEEP TIMER for [0 min].
  • Before disappear the display of SLEEP TIMER settings, simultaneously press the DISPLAY key and VIDEO STATUS key of the remote control unit.
  • The SERVICE MENU screen will be displayed.
                                               Click on image to Enlarge
HOW TO ENTER THE 12.SYSTEM
  • While the SERVICE MENU is displayed, select the 12.SYSTEM(SYS) item with FUNCTION ( ▼/▲) keys, and the FUNCTION (< | > ) keys is pressed, the screen will be displayed.
  • If the value is different, select the setting item with the FUNCTION (▼/▲) keys and adjust t he setting with the FUNCTION(< | > ) keys. (The letters of the Selected item are displayed in yellow. )
  • When adjustment has completed, the values store into memory IC automatically.
  • Press the EXIT key to return the SERVICE MENU screen.
  • Then press the EXIT key again to return the normal screen.
12.SYSTEM (SYS) [System constant setting]
USER SETTING
  • Check the user setting items according to TABLE.
  • Where these do not agree, refer to the OPERATING INSTRUCT IONS (USER'S GUIDE) and set the items as described.