Chassis Description

Power supply lines & power failure detection

 

 

FN905

 

 

FN902

 

 

FN901

 

1

2

3

1

2

3

1

2

3

 

 

 

K66S

 

 

K66L

 

 

K66M

FL

 

FL

 

FL

 

 

FL

 

FAN

S16V CONTROL PF CIRCUIT

S6.3V

1-2

 

 

 

K66N

 

 

 

 

S6.3V

2,4 6,8

K40A

S6V

IC4001

S-6V

S-5V

PF

K66G

 

 

D4001

 

 

A/V BOARD

 

S5V

PF

PF

PF

14

 

 

K40E

K40D

9-10

11-12

3-4

K87A

 

D8701

I/F BOARD

 

 

 

S6V

Q8701

5V

 

 

 

 

NET_SW

PF

 

-D

 

IC8701

3.3V1

PF

DVI

PF

IC8702

3.3V2

PF

 

 

K87B

 

 

 

 

30

32

 

 

 

Q6612 15.7V

IC_RST

Q6611 10VA

IC6606

 

K66D

 

FAN_CONT2

 

6

 

SUB POWER BOARD

 

 

 

 

FAN_CONT1

 

 

FAN_DRIVE

PF

 

FAN_PF

1 2 543

K8D

IC_RESET

PFC_SW

 

 

 

 

 

 

 

 

 

 

 

 

 

 

K10R

 

K10Q

-5V AV PF

S5V AV PF

5VDVI

 

 

 

 

K8Z

PJ_5V_PF

NET_SW

PJ_5V_PF

 

 

Symbol

Remark

 

 

 

 

 

 

FL

Fan Lock signal

 

 

 

 

 

 

PF

Power Fail signal

64

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

IC_RST

S16V

-6

 

S16V

 

1-2 5

K8F

Q6617

S3.4V

K66H

S3.3V

 

 

-4

 

 

 

 

 

 

S3.3V

Q6616

3.3V

K66F

10-8 2

K8G

3.3V

 

 

 

 

 

-5V_AV_PF S5V_AV_PF MAIN_-5V_PF M/A_PF FAN_PF

65

66

67

68

69

70

 

IC_RST

S16V

1-2

Q6614

6.2V

S-6V

5

 

IC_RST

 

7

S6.3V

 

K66E

10

 

S16V

 

9-

 

 

 

CN66A

 

 

 

3-4 9-11

2

14 15 13 12

 

K8E

S16V

S-5V

S6V

6V

Refer to:

POWER SUPPLY LINES

SWF_1.2V_PF SWF_2.5V_PF VDEC_1.8_PF FPGA_1.5V_PF GAM_15.5V_PF

MAIN_6V_PF

MAIN_3.3V_PF

AD_3.3V_PF

71

 

 

 

IC801

72

 

 

A[0-5]

 

 

 

D[0-7]

MAIN

73

 

 

 

 

CPU

74

IC4801

I/O EXPANDER

 

 

 

 

 

 

 

77

 

 

 

 

78

 

 

 

 

80

 

 

 

 

CN6A

S16V

 

S6.3V

 

S-6V

 

 

 

 

 

T651

CONVERTER

TRANS.

PC601 F.B.

IC_RST

PC602

PFC_SW

PC603

16VA

 

15.7V

 

 

 

 

 

 

 

POWER BOARD

Power failure detection tree

M/A_PF

K8T

2

K16R

PF

Lamp-On : H

Stand-by : L

MAIN BOARD

AD_5V_PF

GAM_1.8V_PF LAMP_FAN_PF

PFC_SW

IC_RESET

NET_SW

Stand-by : L

82

 

 

 

 

83

 

 

 

 

56

 

 

 

 

16

 

 

4

186

 

 

IC1871

17

3

211

BUFFER

12

8

206

 

 

 

 

IC1872

 

 

 

 

BUFFER

 

 

 

 

 

 

111

ON_15V

 

 

 

 

 

IC651

9-10

CN16C

15.7V

IC1621

12V_M/A

PF

 

 

 

 

 

SWITCHING

7-8

 

IC1631

 

REGULATOR

16VA

 

 

5

 

IC_RST

 

PF

 

K8M

FL

FL

1 2 3 FN904

DIODE

BRIDGE

K6AC

K6AB

 

BOOSTER

 

 

 

 

IC601

 

 

 

 

 

 

 

P.F.

 

 

 

 

 

 

 

CONTROL

 

 

 

 

 

 

 

 

 

 

 

 

 

 

K6A

 

 

 

 

 

 

 

1

3

 

 

 

 

 

 

 

 

 

 

CJ1

375V

 

18VB

 

 

 

 

IGNITOR

 

 

 

 

 

LAMP

BALLAST

CN6C

 

IC1632

 

DRIVE BOARD

 

 

PF

K16N

 

 

 

 

 

 

3

1

 

 

 

 

 

12VAR

3

 

 

K20H

 

12VAL

 

 

 

1

 

 

 

 

K20A

 

 

 

 

SW BOARD

K20J

R-NET BOARD

CJ2

K8K

 

 

 

 

 

 

 

K8N

 

FAN

 

FL

 

 

 

S16V

CONTROL

PF

K8P

 

CIRCUIT

 

 

 

FL

 

 

 

 

Refer to:

 

K8O

 

 

FL

Fan control stage

1 2 3 FN906 1 2 3 FN903 1 2 3 FN907

K6AA

CJ4

S5V

S5V

S5V

S5V

15.5V

THERMAL SW

PRIMARY

 

SHIFTLENS

CONNECT

S5V

FRONTRC BOARD

S5V

CONTROL BOARD

S5V

SENSOR BOARD

INLET

 

 

CIRCUIT

 

K8S

6

K8L

1

K8J

6

K8X

 

INTERLOCK

 

 

 

 

K2811A

 

K68A

 

K16I

 

SW

LAMP

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

AC

 

 

 

 

 

 

 

 

 

 

INPUT

 

 

 

 

 

 

 

 

1

S5V

13.5V

K25R K25G K25B

RED

GREEN

BLUE

LCD

LCD

LCD

PANEL

PANEL

PANEL

- 46 -

Page 46
Image 46
Eiki LC-X71 LC-X71L service manual Power supply lines & power failure detection, IC8702 3V2

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.