Dell U4320Q - User Manual

Product Announcement:
This product is certificated to meet RoHS
Directive and Lead-Free produced definition.
Using approved critical components only is
recommended when the situation to replace
defective parts. Vender assumes no liability
express or implied, arising out of any unauthorized
modification of design or replacing non-RoHS
parts. Service providers assume all liability.
Qualified Repairability:
Proper service and repair is important to the safe,
reliable operation of all series products. The
service providers recommended by vender should
be aware of notices listed in this service manual in
order to minimize the risk of personal injury when
perform service procedures. Furthermore, the
possible existed improper repairing method may
damage equipment or products. It is recommended
that service engineers should have repairing
knowledge, experience, as well as appropriate
product training per new model before performing
the service procedures.
NOTICE:
! To avoid electrical shocks, the products should be
connected to an authorized power cord, and turn
off the master power switch each time before
removing the AC power cord.
! To prevent the product away from water or
expose in extremely high humility environment.
! To ensure the continued reliability of this
product, use only original manufacturer’s
specified parts.
! To ensure following safety repairing behavior, put
the replaced part on the components side of
PWBA, not solder side.
! To ensure using a proper screwdriver, follow the
torque and force listed in assembly and
disassembly procedures to unscrew screws.
! Using Lead-Free solder to well mounted the
parts.
! The fusion point of Lead-Free solder requested in
the degree of 220°C.
1. Important Safety Notice

Summary

Important Safety Notice

Product Announcement

Details about RoHS, Lead-Free, and vendor liability for unauthorized modifications.

Qualified Repairability

Emphasizes proper service, vendor recommendations, and required skills for repair.

NOTICE

Lists critical safety instructions for electrical shock prevention and part replacement.

Exploded View Diagram

Wiring Connectivity Diagram

Disassembly and Assembly Procedures

Disassembly Procedures

Step-by-step guide for taking the monitor apart, including tool requirements.

Assembly Procedures

Step-by-step guide for reassembling the monitor, focusing on component installation.

Troubleshooting Instructions

Self-Test

Instructions on how to run the monitor's self-test feature to diagnose issues.

Built-in Diagnostics

Guide to using the monitor's diagnostic tool for screen abnormality checks.

USB-C Prioritization Setup

How to configure USB-C power delivery and data transfer priorities.

PIP;PBP Mode Settings

Steps to adjust picture-in-picture and picture-by-picture display modes for optimal resolution.

Common Problems and Solutions

Table detailing common monitor issues and their troubleshooting steps.

Product Specific Problems

Addresses issues specific to the product, such as screen size and USB-C functionality.

Dell U4320Q Specifications

General

Screen Size	42.5 inches
Resolution	3840 x 2160 (4K UHD)
Panel Type	IPS
Aspect Ratio	16:9
Refresh Rate	60 Hz
Brightness	350 cd/m²
Contrast Ratio	1000:1
Color Support	1.07 billion colors
VESA Mount	100 x 100 mm
Response Time	5 ms (gray to gray)
Ports	1 x DisplayPort, 2 x HDMI, 1 x USB-C, 4 x USB 3.0
Speakers	2 x 8W
Viewing Angle	178°
Features	Picture-by-Picture, Picture-in-Picture
Color Gamut	99% sRGB
Dimensions (with stand)	967.2 mm x 237.3 mm x 624.9 mm