When Auto Screen Fit fails on a BenQ AK700ST or AH700ST, first identify which stage fails: screen detection, image coverage, menu access or the picture from your computer. Changing every setting at once makes those four problems harder to separate.
The AK700ST and AH700ST use Auto Screen Fit. Instructions for Auto Screen Fit 2.0 on other models can contain different border requirements and pattern counts. Use the model name on your projector as the starting point.
Check the detection conditions first
For these two models, BenQ specifies a black or contrasting border at least 2.4 inches (6 cm) around the screen. Reduce ambient light falling on the screen during detection. The initial projected image should extend beyond all four screen edges, while all 12 circle markers remain inside the screen border.
These are two different checks: the image must cover the screen, and the reference markers must remain visible in the required area. A picture that spills beyond the border can still be positioned incorrectly for detection.
Inspect the top and bottom edges as carefully as the sides. A dark surround, an uneven screen edge or light striking only one corner can make a front-facing photograph more useful than a description such as “it nearly fits.”
Choose the next check by symptom
| What happens | What to inspect | What a useful result looks like |
|---|---|---|
| Detection does not complete | Border contrast, direct light and all 12 markers | A clearly defined screen with every marker inside its border. |
| The image cannot cover every edge | Optical image size and physical alignment | Full coverage before asking the automatic routine to fit it. |
| Detection finishes but one corner is off | Alignment and the residual shape error | A small correction you can evaluate with Corner Fit. |
| Aspect Ratio is greyed out | Screen Fill mode, Auto Screen Fit state and HDMI connection | You can identify which setting owns the current format. |
| Screen Fill itself is unavailable on AK700ST | Auto Screen Fit and Warping state | A deliberate choice between automatic fitting and manual format control. |
| The test image fits but the simulator does not | Source display and application resolution | Desktop, course view and menus all use the intended shape. |
Use one controlled fitting attempt
- Record the current settings and take a photo of the failed result. Do this before clearing adjustments that might be useful.
- Check the screen and projector position. Establish coverage and marker visibility with the projector securely supported.
- Run Auto Screen Fit and observe the result without changing the source resolution at the same time.
- If the fit completes, use Corner Fit for remaining edge alignment and check focus.
- Open the simulator and examine its interface, course view and small text. Record any difference from the projector’s own pattern.
Change one condition per retry. For example, first remove light from the screen and repeat. If that changes nothing, return to the physical image coverage. This gives you a record of what affected the failure instead of a pile of new settings.
Why Aspect Ratio can be greyed out
A disabled Aspect Ratio control does not necessarily indicate a fault. BenQ’s FAQ for both models says that Screen Fill modes 16:10, 4:3 and 1:1 fix Aspect Ratio at Auto. It also identifies an active HDMI connection and the Auto Screen Fit setting as relevant checks.
If the picture already has the correct proportions, there may be nothing to unlock. If you deliberately want manual aspect-ratio control, note the existing configuration first, turn off Auto Screen Fit and review the Screen Fill choice. Judge the result on the actual screen before keeping it.
Screen Fill is a separate control
The AK700ST manual states that Screen Fill is unavailable while Auto Screen Fit or Warping is enabled. That differs from Aspect Ratio being fixed at Auto. Write down which control is disabled before following troubleshooting steps; the two labels are easy to confuse.
Do not assume that matching menu labels mean every projector accepts the same input resolution. The AK700ST and AH700ST have different native resolutions. Use the timing supported by your specific model and selected mode, then match the application to that signal.
When the desktop fits but golf software does not
Use the projector’s own pattern as the first reference. Next, display a simple desktop image with a circle, border and text near each corner. Finally, launch the simulator. Note the first point where cropping, stretching or blank space appears.
If the pattern and desktop are correct but the application changes shape, investigate the application’s resolution, full-screen behavior and selected display before moving the mount. If every source shows the same misplaced image, return to projection geometry. This comparison narrows the next action without claiming that a single symptom proves a particular fault.
Prepare a useful support request
Include the exact projector model, screen’s visible width and height, border width on each side, lens-to-screen distance, a photograph of the 12-marker pattern and a photograph of the failed result. Add the Screen Fill selection, Auto Screen Fit state, computer output resolution and simulator application.
Also say whether the problem happens with the projector pattern, desktop or only inside the simulator. That one distinction can save a long exchange about unrelated cables or mounting positions.
Should you change projector models to solve this?
Resolve the setup conditions first. A border-detection problem or mismatched application setting does not, by itself, justify replacing the projector. If the mounting position is the unresolved constraint, compare the installation features in our AH700ST vs AK700ST guide and our AK700ST vs LK936ST room-fit comparison.
