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IQB64W10W Service Menu and Convergence

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Tip from Lenny Zimmermann:  Information below probably applies to other Zenith HDTV sets as well.  Link for the Service Menu Codes are at the bottom of the page:

"The IQB64W10W actually has two service menus.

The first can be reached as mentioned previously by pressing and holding the Menu button until the menu disappears, then entering 9 8 7 6 and Enter. The list can be scrolled through and changed using the arrow buttons on the remote. Of most importance here is V_Size and H_Size, as these sets seem to come with a good bit of overscan that lowering these numbers can help to reduce.

The second menu can be reached by holding the Menu button until the menu disappears and then pressing 9 8 7 5 and Enter. This menu allows you to really do some more convergence fine tuning (which you will really need to do if you reduced your overscan). Many of the menu items here are best modified with the use of special equipment, but there are several adjustments you can do here without that equipment. As always, be sure to run the set for 30 minutes to warm up before making any adjustments. 

First you should adjust the green convergence. A white crosshatch pattern should be on the screen and you can turn on or off the individual red, green and blue lenses using the remote. First press the Antenna button until the selector box turns green. Then turn off red by pressing 6 and then blue by pressing 8. (7 will turn green on and off, but leave it on for now.)

Align the convergence as best as you can by starting from the center of the screen. Hitting Enter will make the box blink meaning the arrow keys will now allow you to move the center point of the crosshair you are on. Hitting Enter again will let you move the box to a different point, much like the standard focus screen from the User accessible menus.

Zenith recommends aligning the center first, then the points above, below and to either side of center, followed by the corners of that box. Keep checking back at center and back out, as the later adjustments may affect your earlier adjustments. Here is Zenith's recommended adjustment sequence.


Save your settings periodically by hitting 9 then 1 and Enter.

Once your lines in green are all nice and straight add red back into the mix by pressing Antenna to get the Red box and then press 6 to turn red back on. If you accidently turn on blue just hit 8 to tun it back off. Now line all of your red lines to match up with the green lines using the same method as mentioned above for straightening the green lines. Don't forget to keep checking back at center and out as later adjustments will probably affect the earlier ones.

Finally use Antenna to switch your box to blue and then pressing 6 to turn off red and 8 to turn on blue on the crosshatch pattern. Line up the blue to the green lines like you did with the red. Don't forget to press 9 then 1 and Enter to save your changes. There may be a point of no return when it comes to overscan, though. if you reduce the overscan to much, you may never be able to align the outermost convergence points since moving those points often creates some odd distortions that I have had some trouble removing. (Anyone have some tips for that?)

If you prefer a Dot pattern over the bar pattern you can press the 3 key to switch between the two. Also, if the words on the screen are in your way while doing your alignment in that upper left hand corner, just press 2 to turn the OSD information on and off. You can also double your line pattern, if that will help, by pressing 4. Finally to exit this menu just press the Quit button on the remote.

In truth these adjustment should really be performed after a more thorough adjustment of things like the yoke tilt, beam shape and lens and electronic focus settings which should be preformed by a qualified technician, but until you can get that done this is still a whole lot better than using only the few convergence spots you get from the user accessible menu.

More info

"OK. Here is the service menu listing I have. Let me know if the format is a problem for you. I'm hoping some of your readers might be able to help me out in figuring out what all of the menu items are and in what ways they affect the picture.

I also wanted to add the following, more for information gathering as well but some of your Zenith folks might find it useful info anyway:

It has been brought to my attention that the Zenith does have SVM built into it, although it does not appear to be very strong, thankfully. I am currently looking into a way to disable it and if anyone has some ideas or knows how to do it please let me know.

Of note, however, is that I have been told that the selectable video settings bypass the SVM. If this is the case you could chose one of those settings as a baseline and change the Sub-options in the service menu to allow one of the default settings to be appropriate for you set-up. I cannot remember exactly how they are set, but I think the first one is pretty much right down the middle. If that is the case then all you would need to do is to add or subtract what your standard setting is for that item from 50, or 0 as the case may be, and modify the sub-setting in the service menu by the same amount. For example, if you have your set optimally configure so that your normal Contrast level is 36, then 36 is 14 less than 50, so go to service menu item 12 (21 S-Cont, which is Sub-Contrast) and subtract 14 from it, which means you would change it to 4 if you have it at the current default of 18. Now if you adjust the contrast control up to 50 it should be about the same as it was previously at 36.

The service menu items you can change in this way would be 9 (S-Bright) for Brightness, 10 (S-Hue) for Hue (or it might be called Tint), 11 (S-Col) for Color (think of R as being a negative number and G as a positive number) and 12 (S-Cont) for Contrast."

>>>>   Click here for the Zenith Service Menu Codes   <<<<