HP U27 User Manual

18
Function test
After repair, be sure to confirm that all functions are working.
Support and troubleshooting
The following table lists possible problems, the possible cause or each problem, and the recommended
solutions.
Table 4-1: Function test
Te Operating description Tool used
DP test
the monitor.
Computer or DVD player
Change volume and balance to confirm whether volume is
smooth and loud enough.
Speaker
Test item Operating description Tool used
HDMI test Confirm whether image displays and sound plays correctly on
the monitor.
Computer or DVD player
Confirm whether image displays and sound plays correctly on
Audio test
Confirm whether sound of music played smoothly through the
headphone.
Table 4-2: Solving common problems
Problem Possible cause Solution
Screen is blank or
video is flashing.
Power cord is disconnected. Connect the power cord.
Monitor is off. Power the power button.
NOTE: If pressing the Power
button has no effect, press
and hold the power button
for 10 seconds to disable the
Power button lockout
feature.
Video cable is improperly connected. Connect the video cable
properly.
System is in Sleep mode. Press any key on the
keyboard or move the
mouse to exit Sleep mode.
Video card is incompatible. Open the OSD menu and
select the Input Control
menu. Set Auto-
Switch Input
to Off and manually select

HP U27 Specifications

General

Pixel pitch	0.155 x 0.155 mm
Screen shape	Flat
Pixel density	163 ppi
Display diagonal	27 \
Display technology	LED
Native aspect ratio	16:9
Vertical scan range	40 - 60 Hz
Maximum refresh rate	60 Hz
Horizontal scan range	31 - 135 kHz
Contrast ratio (typical)	1000:1
Display number of colors	-
Display brightness (typical)	300 cd/m²
Supported graphics resolutions	640 x 480 (VGA), 800 x 600 (SVGA), 1024 x 768 (XGA), 1280 x 1024 (SXGA), 1280 x 720 (HD 720), 1280 x 800 (WXGA), 1440 x 900 (WXGA+), 1600 x 900, 1680 x 1050 (WSXGA+), 1920 x 1080 (HD 1080), 1920 x 1200 (WUXGA), 3840 x 2160
Headphone out	Yes
USB hub version	3.2 Gen 1 (3.1 Gen 1)
DisplayPort version	1.2
USB Type-A downstream ports quantity	3
Certification	BSMI; CB; CCC; CE; CSA; CSA-NRTL; EAC; EUP Lot-6; FCC; GEMS; HRN N N0.201; ICES; IS 1121; KC/KCC; PSB; RCM; SABS IEC 60950-1; SASO; TUV Bauart; VCCI; ISC; EUP Lot-26; IEC 60950:1999; eStandby; MEPS (HP) UKRAINIA; ISO 9241; China CEL
Market positioning	Home
Tilt angle range	-5 - 16 °
Panel mounting interface	100 x 100 mm
Operating temperature (T-T)	5 - 35 °C
Operating relative humidity (H-H)	20 - 80 %
Package type	Box
Package depth	125 mm
Package width	699 mm
Package height	462 mm
Package weight	7450 g
AC input voltage	100 - 240 V
Power consumption (standby)	0.3 W
Power consumption (typical)	46.2 W
Cables included	AC, HDMI

Weight and Dimensions

Depth (with stand)	193.5 mm
Height (with stand)	501.3 mm
Weight (with stand)	5000 g
Depth (without stand)	53.2 mm
Width (without stand)	613.5 mm
Height (without stand)	366.5 mm