Chassis Description

Audio signal processing stage

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

10

 

AV BOARD

DRIVE BOARD

 

 

 

 

 

 

 

 

 

 

 

 

 

 

AUDIO_SW1

 

 

 

 

 

 

 

 

IC1651

 

 

16VA

 

 

 

 

L

1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

PC 1

 

 

9

 

 

 

 

 

 

 

 

 

 

PRE AMP.

 

 

 

 

 

 

 

 

 

 

AUDIO_SW2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

R

12

 

 

 

 

 

 

 

 

 

AUDIO-CONTROL

 

 

<EL2244>

 

 

 

 

 

 

 

AUDIO-IN/OUT

 

AUDIO-SW

3

Q5002

 

 

 

15

 

 

10

5

7

 

 

 

 

IC1632

K16N IC1631

(VARIABLE OUTPUT)

 

 

 

 

 

 

<BH3540>

 

 

 

 

 

L

5

<4052>

 

 

 

 

3

 

 

 

 

 

PC 2

 

 

L

 

 

 

 

 

 

 

L

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

AUDIO-IN

R

14

13

Q5001

 

 

 

2

 

7

3

1

 

 

 

 

 

 

 

 

 

1

 

 

 

 

 

 

L

2

IC001

 

 

 

K00D

 

IC1652

 

 

 

 

 

 

 

VIDEO

 

R

 

K16S

 

 

 

 

R

 

 

 

 

 

 

 

 

 

 

 

 

 

 

R

15

IC5002

 

 

 

 

 

 

 

 

 

AUDIO-IN

 

 

 

 

 

 

SW

 

 

 

 

 

 

 

 

 

 

 

 

 

 

3

1

 

 

 

 

 

 

 

 

 

 

 

 

12

 

 

3,14

 

 

 

 

 

 

 

 

K20H

 

 

 

 

 

 

1

2

 

 

5

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

6

5

 

 

6

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

R NET

 

 

 

 

 

 

 

 

 

 

 

 

 

VOLUME

 

SP MUTE

 

SP OFF

 

 

 

 

 

 

 

 

 

Q5004

 

 

 

 

 

 

 

 

 

 

Q1636

 

 

 

K20J

 

 

 

Q5303

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Q5007

K40E

K40C

 

 

 

 

 

K16R

K16U

 

 

 

 

 

 

 

 

45

 

 

11

 

12

13

 

3

 

1

3

1

 

 

 

 

 

 

 

7

15

47

 

 

 

 

 

5

 

 

 

 

 

 

 

K10R

K10P

 

 

 

 

 

 

 

K8T

K20B

 

 

K20A

12VAR

12VAL

 

 

264

AUDIO_MUTE

 

 

 

 

 

 

 

 

 

 

 

 

Q1683

Mute: L Q1681

 

 

263

 

 

 

 

 

 

 

 

 

 

 

 

SW

 

 

 

 

 

 

 

 

 

M_OUT

 

 

 

 

 

 

 

 

 

 

 

 

 

17

3,18

17

3,18

 

 

 

 

 

Monitor out ON : L

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

BOARD

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Monitor out OFF : H

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

143

 

4

 

 

16

AUDIO_SW1

 

 

 

 

 

 

 

 

 

R

 

L

 

 

 

 

 

 

IC3251

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

IC301 SYSTEM CONTROL

232

 

5

BUFFER

15

AUDIO_SW2

 

 

 

 

 

 

 

 

12,13

8,9

8,9

12,13

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

IC1682

 

 

 

IC1681

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

46

 

2

 

 

6

 

 

 

 

 

 

 

 

 

R-AMP.

 

 

L-AMP.

 

 

IC3252

SP_MUTE

 

 

 

 

 

 

 

 

<TDA1517>

 

 

<TDA1517>

 

 

 

 

 

Mute: H

 

 

 

 

 

 

 

 

 

 

 

 

 

 

84

 

5

3

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

BUFFER

SP OFF

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Mute: H

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

325

PW_SCL_3V

PW_SCL_5V

2

 

 

 

 

 

 

 

 

 

 

K20D

SW2001

K20C

 

 

 

 

 

IC281

15

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

VOLUME

 

 

 

 

 

 

4

3

2

1

1

2

3

4

 

 

246

 

 

 

 

3

DAC

 

 

 

 

 

 

 

 

 

PW_SDA_3V

PW_SDA_5V

 

 

 

 

 

 

 

 

 

K20G

 

 

 

 

K20F

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

MAIN BOARD

-

+

+

-

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

-

+

R

 

L

 

+

-

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

EXP SP._R

 

EXP SP._L

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SP902

SP901

 

 

 

 

 

 

 

 

 

 

 

 

- 42 -

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Page 42
Image 42
Eiki LC-X71 LC-X71L service manual Audio signal processing stage, K00D, K20H, K20G K20F

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.