Manual for xb31 & sb21

Brand: HP

Category: Projector

Document Type: Manual

Language: EN

Uploaded: Nov. 21, 2025, 7:44 p.m.

Warranty Information

Refer to the warranty/support information data sheet or contact HP post-sales support.

Turning the Projector ON and OFF

To turn ON:

Remove the lens cap.
Ensure power and signal cables are connected.
Press the Power ON/OFF button on the control panel. The cooling fan will turn on, and the hp start-up screen will display.
Turn on your signal source. The projector will auto-detect it. If no signal is found, use the "Source" button to switch inputs.

To turn OFF:

Press the Power ON/OFF button. The lamp will turn off, and the cooling fan will run for a cool-down cycle.
The blue Power Indicator Light will blink until the cool-down is complete, then turn off.
Disconnect the power cord.

Adjusting the projected image

Adjusting display angle: Press and hold the elevation button to raise or lower the projector, then release to lock. Use the rear elevation foot for alignment.

Adjusting zoom and focus (xb31): Rotate the zoom ring for zoom. Rotate the focus ring for clarity. Focus is possible from 1.14 m to 12 m.

Adjusting focus (sb21): Rotate the focus ring until the image is clear. Focus is possible from 1.0 m to 12 m.

Troubleshooting and error codes

Problem	Solution
No image is projected on screen.	Verify power and signal cable connections. Ensure lens cap is removed and Power Indicator Light is ON. Verify Lamp Indicator Light is OFF (replace lamp if ON). Verify Temp Indicator Light is OFF (refer to page 14 if ON). For notebooks, activate the external monitor port. Check for damaged connector pins. Check lamp installation.
Partial, scrolling or incorrectly displayed image.	Press the "Auto Image" button or use "Auto Image" in the "Computer Image" menu. If using a computer, ensure resolution is compatible (1024x768 for xb31, 800x600 for sb21) or reset your computer's resolution. Switch notebook display to "external display only" or "CRT only" mode. Restart computer and projector if issues persist.
Notebook's screen is not displaying your presentation.	Check computer documentation; some notebooks deactivate their screen with a second display. Activate the external monitor port.