View and Download HP LPw disassembly instructions manual online. Product End-of-Life Disassembly Instructions. HP LPw Monitor pdf manual. LPw – read user manual online or download in PDF format. Pages in total: 9. Download HP LPW LCD MONITOR SM service manual & repair info for electronics experts.
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HP LPW Your browser does not support inline frames or is currently configured not to display inline frames. Stay up to date: It’s not often that you see this in the 24″ l2475w, but HP have broken from the current trend of producing cheaper TN Film based displays, and have introduced a rare IPS based model into the market.
IPS based screens are proving popular amongst enthusiasts out there, and have long been the choice of photography professionals and those looking for a screen for lp22475w critical work. On a quick note, HP list this screen as being S-IPS based on their website, but close inspection of the pixel structure reveals the pixel orientation to be vertical, and characteristic of the latest H-IPS generation.
Ultimately they are IPS matrices, just with different naming schemes depending on structure and generation. Let’s take a look at the listed specs first: Size 24″WS Colour Depth Front and back views of the LPW. Click for larger versions. The HP LPW comes in an attractive black design, with a nice thin bezel and matte finish to the screen surrounds.
The panel is also of the traditional matte Anti-Reflective AR finish, amnual opposed to any glossy screen coating. The stand is finished in a silver colour, and offers a large rectangular footprint on the desk. Some people may find the stand a little bulky and unattractive, and in my opinion it was perhaps a little too large.
It did however offer a very sturdy base for the screen and all in all, the LPW looked professional sat on the desk. The screen features a small unobtrusive HP logo at the top in the centre, and the OSD operational buttons are situated in the lower right mamual corner. These are tucked nicely out of the way and are flush against the bezel.
The power LED glows a bright green colour when the screen is turned on, and glows amber when in standby. I felt the power LED was a little overly bright in fact, and was a bit distracting in practice. The OSD does feature an option to disable this however should you find the same thing.
Tilt range of LPW. The screen offers an impressive array of ergonomic adjustments. All these mechanisms are very smooth to operate and the screen feels sturdy and well supported no matter how you adjust it.
Pivot function of screen shown Below: Materials are all of a very high standard and the build quality feels excellent. It’s a professional looking piece of kit in my opinion, and would look particularly good wall or arm mounted I think. The screen features an integrated power supply, so no need for any external bricks here. There is no noise or buzzing detectable, and the screen gives off minimal heat, even after long hours of use.
USB ports shown left along with range of interface options right. The LPW features an integrated 6 port USB hub, with 2 located for easy access on the left hand side of the screen, and the other 4 located next to the wide range of interface options. It might have been nice for HP to include VGA for connection of some devices and for some older Graphics card support. Click for larger version. The operational buttons are located along the bottom right hand edge.
Various OSD menu screen shots. The OSD menu itself is very thorough and easy to navigate. There are many options to choose from, and the buttons are easy to press and select.
HP LP2475w 24-inch Widescreen LCD Monitor User Guides
I’ve shown a few pictures of the menu above to give you an idea of what is available in some sections. I turned a couple of options off when I first plugged in the screen as I personally found them annoying. The auto-scan for inputs and interface choice confirmation boxes were disabled, but that is down to taste really. You can access the factory menu of the LPW by holding the menu button down while you turn the screen on. Release ‘menu’ after about 5 seconds and when you go into the main menu you will see an option for ‘service’.
Entering this section confirms the panel being used is the LG. Colour Accuracy, Black Depth and Contrast. An important thing to consider for most users is how a screen will perform out of the box and with some basic manual adjustments. Since most users won’t have access to hardware colorimeter tools, it is important to understand how the screen is going to perform in terms of colour accuracy for the average user. I restored my graphics card to default settings and set it to its standard profile.
Default settings of the screen were as follows: You could tell that you would need to adjust the brightness of the screen straight away. With this high luminance value, we recorded the default black depth at 0. This was a little out from the specified In a new test, I wanted to see how much variance there was in the screens contrast as we adjusted the monitor setting for brightness.
In theory, brightness and contrast are two independent parameters, and good contrast is a requirement regardless of the brightness adjustment. Unfortunately, such is not the case in practice.
We recorded the screens luminance and black depth at various OSD brightness settings, and calculated the contrast ratio from there.
HP LPW DISASSEMBLY INSTRUCTIONS MANUAL Pdf Download.
All other monitor and graphics card settings were left at default. It should be mamual that we used the BasICColor calibration software here to record these, and so luminance at default settings varies a little from the LaCie Blue Eye Pro report. As you lower the brightness control in the menu, the lp24755w sent to the CCFL backlighting is reduced, and therefore the backlight intensity is reduced as well.
While brightness is reduced, the black depth improves quite nicely as well, reaching a very impressive 0. This is very respectable for an IPS matrix, and the best black depth we have recorded on such technology so far in our reviews. During these brightness changes, lp275w contrast remains pretty static and within the range of Very good performance in this regard, showing that with proper backlight adjustments you can achieve not only comfortable settings for every day use, but retain a decent contrast and black point throughout the range.
The results were plotted on manuql above graph, showing the contrast stability of the screen. As you reduce the brightness setting, luminance is adjusted nicely, and black depth improves as one would hope. Testing with the colorimeter revealed the graph on the right hand side above, showing DeltaE dE mamual values across 16 shades. As a reminder, the lower these bars down the Y-axis, the better, in terms of colour accuracy.
For reference, LaCie describe the DeltaE readings as: As you can see from the graph, the default results were not that great. DeltaE on average was 4. Maximum dE even ranged up to This is quite a mwnual situation in todays market, especially where extended gamut backlighting is used.
In contrast, the IPS based Hazro HZ26Wi we recently tested showed much better colour accuracy out of the box, showing that perhaps lp24775w HP was not particularly well configured in the factory. This of course need not matter mxnual you have access kp2475w a hardware colorimeter device, but for those without, it might be a consideration to take into account.
The graph on the left hand side recreated here as well shows the CIE diagram which represents the colour space which the monitor is capable of displaying. On the above diagram, the black triangle represents the monitors colour gamut, and it stretches considerably beyond the reference triangle of the sRGB manyal space. This allows access to the RGB controls for calibration and moves the screen away from the preset k mode.
To the manula eye, the image looked a little more blue, and a little less yellow, and testing with the colorimeter actually revealed a slight positive change on the most part. Colour temperature manuao actually nearer to the desired k than it was using the k preset mode!!
Colour accuracy was also improved a little, with maximum dE reduced from Not a massive change overall, but pl2475w if it’s just for the sake of a better colour temperature, it’s worth switching to the ‘custom colour’ mode from the off-set. The main thing this mode is supposed to do is simulate the sRGB colour space, which is important for those not wanting to work with extended colour spaces. Strangely, this mode did nothing for the screens gamut, and the CIE diagram on the left shows the colour space remains considerably larger than the sRGB reference triangle!
I am left to assume that all maual mode really does is darken the image! During the process, the OSD settings were adjusted, forming a small part of the overall calibration proceedings. Brightness was adjusted down to a value of 17, contrast was reduced to 65, and RGB values were changed toand respectively.
There is no hardware level LUT correction with the LPW, which some premium colour critical screens in this sector do offer. Immediately to the naked eye you could feel the difference, with the main obvious adjustment being the far more comfortable and sensible luminance setting.
Colours also looked more even to the naked eye. Testing with the colorimeter confirmed our initial impressions. With this adjustment, black depth was improved quite nicely from the default 0. This is the best result we have tested from an IPS based screen, and a static contrast raito of It looks like finally IPS panels mmanual have overcome their main traditional weakness and can now offer decent black depth.
Subjectively, it was impossible to detect only the first 2 shades of grey on the scale from 0 – being pure white. I followed the useful tests herewhere the first square you could lp2475e on the LPW was number 3 just.
Impressively, the calibration also improved colour accuracy no end. Average dE was now only 0.
This was a massive improvement, and actually the best colour accuracy results we have obtained in our reviews! This even beats the Hazro HZ30W which recently became our champion in this regard with average dE of 0. Testing the screen with various colour gradients showed smooth transitions both horizontally and vertically, and no real sign of even slight gradation. There was certainly no banding issue here.