HP ProBook 4720s Support Question
HP ProBook 4720s Support Question
Find answers below for this question about HP ProBook 4720s - Notebook PC.Need a HP ProBook 4720s manual? We have 3 online manuals for this item!
Question posted by raonaveed153 on February 22nd, 2013
Led Display
multi colour lines on led display
Current Answers
Answer #1: Posted by tintinb on March 28th, 2013 6:45 AM
tintinb
Member since:
October 26th, 2012 Points: 7,056,560
Member since:
October 26th, 2012 Points: 7,056,560
Multi-color lines or pure white lines on your HP ProBook 4720s LED indicates a failure on the screen. There migth be dead pixels on that area of the screen. Replacing the screen is the best solution to fix this issue. Here are the links to the purchase page of the replacement screens.
- https://www.laptopscreen.com/English/model/hp-compaq/PROBOOK~4720S/
- http://www.ebay.com/itm/LAPTOP-LCD-SCREEN-FOR-HP-PROBOOK-4720S-17-3-WXGA-/180637291703
- http://www.ebay.com/itm/New-17-3-HD-Replacement-Screen-HP-PROBOOK-4720s-/280574842848?pt=UK_Computing_Laptop_Screens_LCD_Panels&hash=item41539057e0'
- https://laptopscreenonline.com/ekmps/shops/account_cancelled.asp?productpage=hp-probook-4720s-laptop-replacement-screen-19745-p.asp
- http://www.screencountry.com/index.php?section=products&model=PROBOOK%204720S&brand=HP-Compaq
If you have more questions, please don't hesitate to ask here at HelpOwl. Experts here are always willing to answer your questions to the best of our knowledge and expertise.
Regards,
Tintin
Related HP ProBook 4720s Manual Pages
HP ProBook 4520s Notebook PC and HP ProBook 4720s Notebook PC - Maintenance and Service Guide - Page 5
...side components ...14 Left-side components ...16 Bottom components ...17 Display ...17 Wireless antennas ...19 Additional hardware components 20
3 Illustrated parts catalog 21 Service tag ...21 Computer major ...components 22 Display assembly components 28 Plastics Kit ...29 Cable Kits ...30 Mass storage devices ...32...
HP ProBook 4520s Notebook PC and HP ProBook 4720s Notebook PC - Maintenance and Service Guide - Page 6
... module ...65 WWAN module ...68 Heat sink and fan ...69 Processor ...74 Palm rest ...76 Hard drive ...78 Display assembly on computers with 17.3-in displays 80 Display assembly on computers with 15.6-in displays 86 Top cover ...92 RTC battery ...96 Bluetooth module ...98 Modem module ...99 Audio board ...101 System board ...103...
HP ProBook 4520s Notebook PC and HP ProBook 4720s Notebook PC - Maintenance and Service Guide - Page 7
6 Specifications ...121 Computer specifications ...121 17.3-in display specifications 122 15.6-in display specifications 123 Hard drive specifications ...124 DVD-ROM Drive specifications 125 DVD±RW Double-Layer Combo Drive specifications 126 Blu-ray Disc ROM Drive ...
HP ProBook 4520s Notebook PC and HP ProBook 4720s Notebook PC - Maintenance and Service Guide - Page 9
...Category Product Name Processors
Chipsets Graphics Panels
Description
HP ProBook 4520s Notebook PC
HP ProBook 4720s Notebook PC
Intel® Core™ processors ● ...with 512-MB memory
All display assemblies support privacy filter
HP ProBook 4520s UMA •
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HP ProBook 4520s discrete •
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HP ProBook 4720s discrete
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HP ProBook 4520s Notebook PC and HP ProBook 4720s Notebook PC - Maintenance and Service Guide - Page 10
... 1366×768 BrightView for webcam
● 1366×768 BrightView for webcam and WWAN
17.3-in HD LED backlight panel:
● 1600×900 AntiGlare
● 1600×900 AntiGlare for webcam and WWAN
●...215; 2, dual-channel)
● 1024-MB total system memory (1024MB × 1)
HP ProBook 4520s discrete •
HP ProBook 4720s discrete
•
2 Chapter 1 Product description
HP ProBook 4520s Notebook PC and HP ProBook 4720s Notebook PC - Maintenance and Service Guide - Page 11
Category Hard drives
Optical drives
Diskette drive Audio/visual Modem Ethernet Wireless
Description
HP ProBook 4520s UMA
Supports 9.5-mm, 6.35-cm (2.50-in) hard
•
drives
Customer-accessible
•
Serial ATA
•
Supports...S5 wake on LAN: AC only mode
•
Integrated WLAN options by way of MiniPCI card:
HP ProBook 4520s discrete
HP ProBook 4720s discrete
3
HP ProBook 4520s Notebook PC and HP ProBook 4720s Notebook PC - Maintenance and Service Guide - Page 12
Category
External media cards Ports
Description
HP ProBook 4520s UMA
HP ProBook 4520s discrete
HP ProBook 4720s discrete
2 WLAN antennas built into display assembly •
•
•
Supports option for no-WLAN
•
•
•
Support for the following WLAN formats:
•
•
•
● Broadcom 802.11b/g
&#...
HP ProBook 4520s Notebook PC and HP ProBook 4720s Notebook PC - Maintenance and Service Guide - Page 13
...
HP ProBook 4520s UMA
VGA (Dsub 15-pin) supporting 1600 × 1200 • external resolution at 75-GHz (hot plug/ unplug with auto-detect)
Multi-pin AC...Professional with Office 2007
•
Professional (Japan only)
HP ProBook 4520s discrete •
• • •
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•
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HP ProBook 4720s discrete •
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•...
HP ProBook 4520s Notebook PC and HP ProBook 4720s Notebook PC - Maintenance and Service Guide - Page 14
...7 Home Premium with MS
•
Basics (Japan only)
HP ProBook 4520s discrete
• •
•
• • •
HP ProBook 4720s discrete
• •
•
• • ...(excludes Japan)
Windows 7 Home Basic with Office 2007
•
ready - Category
Description
HP ProBook 4520s UMA
Windows Vista Home Basic 32 with Office • 2007 Ready (Japan only)
Windows...
HP ProBook 4520s Notebook PC and HP ProBook 4720s Notebook PC - Maintenance and Service Guide - Page 15
...;
DRDVD Windows 7 - Home Premium/Pro
•
DRDVD Windows 7 - Category Serviceability
Description
HP ProBook 4520s UMA
Windows Vista Business 32 with MS Basics • (Japan only)
Windows 7 32 (...;
Battery (system)
•
HP ProBook 4520s discrete •
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HP ProBook 4720s discrete •
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HP ProBook 4520s Notebook PC and HP ProBook 4720s Notebook PC - Maintenance and Service Guide - Page 16
Category
Description
Hard drive Memory module Optical drive WLAN module WWAN module
HP ProBook 4520s UMA
HP ProBook 4520s discrete
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HP ProBook 4720s discrete
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8 Chapter 1 Product description
HP ProBook 4520s Notebook PC and HP ProBook 4720s Notebook PC - Maintenance and Service Guide - Page 20
Turns off the computer. Component (1) Speakers (2) (2) Internal display switch (3) Power button
(4) Fingerprint reader (select models only)
Description
Produce sound.
Buttons, switches... the computer is on .
● When the computer is off, press the button to turn off the display if the display is closed while the power is on , press the button to shut down the computer.
● When the...
HP ProBook 4520s Notebook PC and HP ProBook 4720s Notebook PC - Maintenance and Service Guide - Page 21
... the pointer.
Execute frequently used system functions when pressed in combination with a function key, the num lk key, or the esc key. Top Components 13 Displays the Windows Start menu.
Can be used system functions when pressed in combination with the fn key. Executes frequently used like the keys on an...
HP ProBook 4520s Notebook PC and HP ProBook 4720s Notebook PC - Maintenance and Service Guide - Page 25
Holds the battery. Bottom components 17 Contains a wireless subscriber identity module (SIM). The SIM slot is located inside the battery bay.
Display
NOTE: Your computer may look slightly different from the battery bay. Bottom components
Component (1) Battery release latches (2) (2) Battery bay (3) SIM slot (select models only)
Description
...
HP ProBook 4520s Notebook PC and HP ProBook 4720s Notebook PC - Maintenance and Service Guide - Page 26
On: The webcam is on. Records sound. Component (1) Internal display switch (2) Internal microphone (3) Webcam light (select models only) (4) Webcam (select models only)
Description Turns off the display if the display is closed while the power is in use. Records audio and video and captures still photographs.
18 Chapter 2 External component identification
HP ProBook 4520s Notebook PC and HP ProBook 4720s Notebook PC - Maintenance and Service Guide - Page 30
Computer major components
Item Description
(1)
Display assembly (includes microphone, 2 WLAN antenna transceivers and cables and, on select computer
models, 2 WWAN antenna transceivers and cables)
For use only with computers with 17.3-in displays
22 Chapter 3 Illustrated parts catalog
HP ProBook 4520s Notebook PC and HP ProBook 4720s Notebook PC - Maintenance and Service Guide - Page 31
... for use in computers equipped with webcam (1366×768 resolution)
598703-001
● 15.6-in HD AntiGlare display assembly (1366×768 resolution)
598702-001
● 15.6-in HD BrightView display assembly for use in computers with webcam, WWAN, and red trim (1366×768 resolution)
604859-001
● 15.6-in...
HP ProBook 4520s Notebook PC and HP ProBook 4720s Notebook PC - Maintenance and Service Guide - Page 32
... number 598673-001)
(8)
Speakers
For use in computers with 17.3-in displays
598686-001
For use in computers with 15.6-in displays
598685-001
(9)
Top cover
For use in computers with 17.3-in displays
598683-001
For use in computers with 15.6-in displays
598682-001
(10) Audio board
598684-001
(11) Bluetooth module...
HP ProBook 4520s Notebook PC and HP ProBook 4720s Notebook PC - Maintenance and Service Guide - Page 130
... to 16.8 million
500:1 (typical BrightView), 300:1 (typical AntiGlare)
200 nits (typical)
1600 × 900 RGB LED 16 ms 5.3 W (max) 5 VA
122 Chapter 6 Specifications The computer operates well within this range of temperatures.
17.3-in display specifications
Dimensions Height Width Diagonal Number of colors Contrast ratio Brightness Pixel resolution Format Configuration Backlight...
HP ProBook 4520s Notebook PC and HP ProBook 4720s Notebook PC - Maintenance and Service Guide - Page 131
15.6-in display specifications
Dimensions Height Width Diagonal Number of colors Contrast ratio Brightness Pixel resolution Format Configuration Backlight Response Time Total power consumption Viewing ... in
39.1 cm
15.6 in
Up to 16.8 million
500:1 (min BrightView), 300:1 (min AntiGlare))
200 nits (typical)
1366 × 768 RGB LED 8 ms (typ) 4.1 W (max) SVA
15.6-in display specifications 123
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