Brand: Lenovo
Category: Monitor
Document Type: Manual
Language: EN
Available Languages: EN , ES
Manual for P34w-20
Uploaded: Nov. 21, 2025, 9:23 p.m.
Manual Publish Date: 2021-05-01
Warranty Information
This manual provides information on product features, setup, and troubleshooting, with warranty terms detailed separately.
This guide covers setting up the ThinkVision P34w-20 monitor, including connecting it to your computer via various ports (HDMI, DisplayPort, USB-C). It details how to use features like Picture-by-Picture (PBP), Picture-in-Picture (PIP), and True Split for enhanced multitasking. The guide also provides instructions for installing monitor drivers, basic troubleshooting, and maintenance.
Troubleshooting and error codes
| Problem | Possible cause | Suggested action | Reference |
| The words "Out of Range" are shown on the screen, and the power indicator is flashing white. | The system is set to a display mode which is not supported by the monitor. | If you are replacing an old monitor, reconnect it and adjust the display mode to within the specified range for your new monitor. If using a Windows system, restart the system in safe mode, then select a supported display mode for your computer. If these options do not work, contact the Support Center. | "Selecting a supported display mode" on page 2-8 |
| The image quality is unacceptable. | The video signal cable is not connected with the monitor or system completely. | Be sure the signal cable is firmly plugged into the system and monitor. | "Connecting and turning on your monitor" on page 1-3 |
| The color settings may be incorrect. | Select another color setting from the OSD menu. | "Adjusting your monitor image" on page 2-3 | |
| The automatic image setup function was not performed. | Perform automatic image setup. | "Adjusting your monitor image" on page 2-3 | |
| The power indicator is not lit and there is no image. | • The monitor's power switch is not switched on. | • Be sure the power cord is connected properly. | "Connecting and turning on your monitor" on page 1-3 |
| • The power cord is loose or disconnected. | • Be sure the outlet has power. | ||
| • There is no power at the outlet. | • Power on the monitor. | ||
| • Try using another power cord. | |||
| • Try using another electrical outlet. | |||
| Screen is blank and power indicator is amber. | The monitor is in Standby/Suspend mode. | Press any key on the keyboard or move the mouse to restore operation. Check the Power Options settings on your computer. | "Understanding power management" on page 2-9 |
| The power indicator is amber, but there is no image. | The video signal cable is loose or disconnected from the system or monitor. | Be sure the video cable is connected with the system properly. | "Connecting and turning on your monitor" on page 1-3 |
| One or more of the pixels appear discolored. | The monitor brightness and contrast are at the lowest setting. | Adjust the brightness and contrast setting on the OSD menu. | "Adjusting your monitor image" on page 2-3 |
| This is a characteristic of the LCD technology and is not an LCD defect. | If there are more than five pixels missing, contact the Support Center. | "Appendix A. Service and Support"on page A-1 | |
| • Lines or images are blurred in the text. | • Image setup has not been optimized. | According to the resolution of the monitor itself, adjust the resolution setting of the system: 3440 x 1440 @ 60 Hz. | "Adjusting your monitor image" on page 2-3 |
| • There are horizontal or vertical lines in images. | • The "Display Properties" settings of your system have not been optimized. | Perform automatic image setup. If automatic image setup does not help, perform manual image setup. | "Selecting a supported display mode" on page 2-8 |
| When working in the native resolution, you may find additional improvements by adjusting the Dots Per Inch (DPI) setting on your system. | See the Advanced section of your system's display properties. |