Electrical Adjustments

mPC Input adjustment

1.Receive the 16-step gray scale computer signal with Input 1 [RGB(Analog)] mode.

2.Enter the service mode.

3.Select group no. “680”, item no. “0” and change data value from 0 to 1. The projector starts self-adjust- ment. When the adjustment completes correctly, "OK" will appear on the screen. IF "NG" appears, try this adjustment again.

,A/V Input adjustment

1.Receive the 16-step gray scale computer signal with Input 3 [video] mode.

2.Enter the service mode.

3.Connect an oscilloscope to test point “TP531” (+) and chassis ground (-).

4.Select group no. “300”, item no. “2” and change data value to adjust waveform “a” to be minimum ampli- tude.

5.Receive the 16-step gray scale component video sig- nal (Y/Cb/Cr 480p) with Input 3 [Y,Pb/Cb,Pr/Cr] mode.

6.Select group no. “300”, item no. “0” and change data value to adjust waveform “a” to be minimum ampli- tude.

7.Receive the 16-step gray scale component video sig- nal (Y/Pb/Pr 1080i-60) with Input 3 [Y,Pb/Cb,Pr/Cr] mode.

8.Select item no. “0” and change data value to adjust waveform “a” to be minimum amplitude.

9.Receive the 16-step gray scale component video sig- nal (Y/Pb/Pr 720p) with Input 3 [Y,Pb/Cb,Pr/Cr] mode.

10.Select item no. “0” and change data value to adjust waveform “a” to be minimum amplitude.

11.Receive the 16-step gray scale component video signal (Y/Cb/Cr 480i) with Input 3 [Y,Pb/Cb,Pr/Cr] mode.

12.Select item no. “0” and change data value to adjust waveform “a” to be minimum amplitude.

White Level

(a)

.Common Center adjustment

1.Receive the 16-step gray scale computer signal with Input 1 [RGB(Analog)] mode.

2.Enter the service mode.

3.Project only green light component to the screen.

4.Select group no. “200”, item no. “12” and change data value to obtain the minimum flicker on the screen.

5.Project only blue light component to the screen.

6.Select item no. “13” and change data value to obtain the minimum flicker on the screen.

7.Project only red light component to the screen.

8.Select item no. “14” and change data value to obtain the minimum flicker on the screen.

⁄0PC Gamma-shift adjustment

1.Receive the 100% whole-white computer signal with Input 1 [RGB(Analog)] mode.

2.Enter the service mode.

3.Measure luminance on the screen with the luminance meter. It is A for the reading of luminance meter.

4.Change the signal source to the 50% whole-white signal with Input 1 [RGB(Analog)] mode.

5.Select group no. “200”, item no. “15” and change data value to make the reading of luminance meter to be

A x 22±1%.

Note:

If the luminance meter is not equipped, you can take another method instead as follows;

1.When the main board is replaced, the data value at group no. “200”, item no. “15” of the previous main board should be copied manually.

⁄1PC White Balance adjustment

1.Receive the 50% whole-white computer signal with Input 1 [RGB(Analog)] mode.

2.Enter the service mode, select group no. “200”, item no. “16” (Blue) or “17” (Red), and change data values respectively to make a proper white balance.

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Eiki LC-X71 LC-X71L service manual PC Input adjustment, Common Center adjustment, ⁄0PC Gamma-shift adjustment

LC-X71 LC-X71L specifications

The Eiki LC-X71 and LC-X71L are advanced multimedia projectors designed for a range of applications, from education to corporate environments. Known for their outstanding image quality and impressive clarity, these projectors combine technological innovation with user-friendly features, making them ideal for presentations, lectures, and various visual displays.

One of the defining characteristics of the LC-X71 series is its high brightness output. With 6000 ANSI lumens, these projectors ensure clear and vibrant images, even in well-lit rooms. This level of brightness is complemented by a native XGA resolution (1024 x 768), providing sharp details and vivid colors. The LC-X71L model features a slightly enhanced brightness, making it suitable for larger venues or where ambient light cannot be controlled.

The Eiki LC-X71 and LC-X71L utilize a DLP (Digital Light Processing) technology that enhances color accuracy and contrast. This technology minimizes the visibility of pixels, ensuring smooth images that remain sharp at various viewing distances. Moreover, the projectors incorporate a high contrast ratio, which contributes to deep blacks and bright whites, making them perfect for presentations with complex graphics.

Another noteworthy feature is the flexible connectivity options. The LC-X71 series offers multiple input terminals, including HDMI, VGA, and USB, allowing for seamless integration with various devices, from laptops to video players. This versatility enables users to easily switch between different content sources. Additionally, the projectors support wireless presentation capability, enhancing user convenience and reducing the clutter of cables.

User convenience doesn’t stop at connectivity. The LC-X71 and LC-X71L are designed for easy installation and maintenance. Their lightweight design and compact dimensions facilitate portability, making them easy to move between locations. They also feature a filter-free design, reducing maintenance efforts and ensuring long-term reliability.

In terms of energy efficiency, both models are equipped with Eco Mode, which extends lamp life and reduces power consumption. The lamp life can reach up to 4000 hours, depending on usage, making it a cost-effective solution for prolonged use.

In conclusion, the Eiki LC-X71 and LC-X71L projectors deliver exceptional performance, combining high brightness, versatile connectivity, and user-friendly features. Their technological advancements cater to various needs, ensuring that they stand out in the competitive market of multimedia projectors.