Manual for xb31 & sb21

Brand: HP

Category: Projector

Document Type: Manual

Language: EN

Available Languages: EN , ES

Uploaded: Nov. 21, 2025, 6:10 p.m.

Warranty Information

Refer to the warranty/support information data sheet enclosed with the projector.

Turning the projector ON and OFF

To turn ON: Remove lens cap, connect power and signal cables, press the Power ON/OFF button. The projector will warm up and search for a signal. Turn on your signal source.

To turn OFF: Press the Power ON/OFF button. The projector will cool down. Disconnect power cord when fan stops.

Adjusting the projected image

Display Angle: Use the elevation button to raise or lower the projector and lock it in position. Use the rear elevation foot for levelling.

Adjusting Zoom and Focus

xb31: Rotate the zoom ring for zoom, and the focus ring for focus. The projector focuses from 1.14 m to 12 m.

sb21: Rotate the focus ring for focus. The projector focuses from 1.0 m to 12 m.

Troubleshooting and error codes

Problem	Solution
No image is projected on screen.	Verify power cord and cable connections. Ensure lens cap is removed and Power Indicator Light is ON. Check Lamp Indicator Light (if ON, replace lamp). Check Temperature Indicator Light (if ON, refer to page 14). For notebooks, activate the external monitor port. Check connector pins and lamp installation.
Partial, scrolling or incorrectly displayed image.	Press the "Auto Image" button or use the "Auto Image" function in the OSD. If using a computer, check resolution and timing compatibility. Reset resolution if needed. For notebooks, switch to "external display only" or "CRT only" mode. Restart computer and projector if issues persist.
The notebook's screen is not displaying your presentation.	Some notebooks deactivate their screen when a second display is used. Consult computer documentation. Activate the external monitor port.