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Re: navigating service menu
If the remote has up/down/left/right arrow buttons, then you can use the arrow keys to readjust the screen. Use the format button to switch betwen auto, widescreen (16:9), letterbox (4:3), and other options. not all formats are available on all channels.
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There should be a zoom button on the remote control. Each time you press it the size of the picture changes. If there is not a button on the remote, there should be a on screen menu display that allows the size to be adjusted. If you are using a HD cable box or HD satellite receiver, they also have picture zoom options.
I hope this helps
Adjust the convergence or reset it to factory default. Use only the remote when adjusting convergence. The front controls have no effect.
Press action button to enter MENU.
Navigate to SETUP.
Scroll down to CONVERGE.
Press VOL > to select.
Press CH buttons to navigate up or down.
Choose CONVERGENCE ADJ or RESET TO DEFAULT.
Press VOL > to select.
If CONVERGENCE ADJ is selected the align Green to Center screen will be displayed.
Use the navigation buttons on the remote control to align the horizontal and vertical green lines on screen, with the cabinet reference marks on top center and left center of cabinet.
Press ACTION button to display red center correction screen.
Use the navigation buttons on the remote control to align the red cross with the white cross pattern at the center of the screen. To prevent picture tube damage do not leave test pattern on for an extended period of time.
Press “0” on the remote control keypad to display the BLUE center correction screen, repeat procedure for adjusting blue. If needed press “0” again to return to RED correction screen. An adjusted cross pattern appears white with a minimum of color protrusion.
NINE POINT CONVERGENCE CORRECTION Remote Control must be in TV mode.
Press ACTION button to display red correction screen.
Press the 1 through 9 keypad buttons on the remote control to select the desired convergence position.
Use the navigation buttons to align the RED cross with the white cross pattern.
Press “0” on the remote control keypad to display the BLUE correction screen, then repeat procedure.
To exit press ACTION button repeatedly, then press CH up.
That sounds like a problem with the geometry settings which are uusually only adjustable from the service menu area. I don't reccomend that you try making any adjustments in that area of the menu, as you can cause major problems or even irreversable damage if you don't understand exactly what the value you're altering is affecting. You may also have a problem in the pincusion correction circuit, or the convergence circuits. That may be a TV that needs professional attention.
the sony service menu can be entered by pressing "display" "5" "vol+" also the diagnostic screen can be reached by vol- instead of + when you are in the service menu the number buttons navigate it its a little tricky at first but as long as you dont hit enter before you exit if you mess up it wont save just make sure if you fix it you save it by pressing enter
the screen size feature is gray out because there is a previous option selected already and computer assumes you want always that size.So going into the menu and try to look for a previous selection related with: "screen size default". The menu allows you to selec this option and (i like to "standard" and i adjust screen size with my cable box feature who allows change size also if is needed, but now days cable box change it itself because is automatic) is install in the original program by manufacture because helps you to keep one size and you don't have to change it any moment. This default option is outside the regular screen size option, if i remember right is in set up screen. try to find this options in your user's manual to follow the right screen procedure..
Verical position is hard to adjust and is in service menu. A service manual will get you there, but you might get lucky with the vertical size adjustment. If you open the front of the TV, the vertical size is adjusted with a knob on the deflection board. Remove the speaker grille and take off the access panel. You will see two knobs, one horizontal and one vertical. Be careful, those red wires have 30,000 volts on then, don't touch anything but those knobs. If its just an adjustment, the v-size knob will fix. Set it so ESPN ticker is just above the bottom of the screen. *Service mode - the manual tells little but entering is done by "press and hold the input button, press the power button, release both after you hear HV come up" .. the v-pos parameter is in there, but this manual doesn't say where or how to adjust, procede at your own risk. If you get into trouble, pull the power so you don't save any settings. I believe you just navigate through the menus to find the parameter and use arrows to adjust. Enter may save. Sorry the service manual I have tells nothing much.
No adjustment needed on these LCD projection. Your problem is in your setup menu. Your default is now is set ZOOM. That is why the bottom of the picture is cutting off. Go to Menu, setup and screen size or something close to that.