Eiki EK-400X User manual

1
DATA PROJECTOR
SERVICE MANUAL
EK-400X
EK-401W
EK-402U

2
CONTENTS
1. COMPLIANCE OF SAFE REPAIR..................................................................................................................4
1-1. CAUTIONS DURING DISASSEMBLING AND ASSEMBLING ................................................................................................4
1-2. LAMP .............................................................................................................................................................................4
1-3. LENS..............................................................................................................................................................................4
1-4. EYE SAFETY WARNINGS...............................................................................................................................................5
2. SPECIFICATIONS...........................................................................................................................................6
2-1. SUMMARY SPECIFICATIONS ..........................................................................................................................................6
2-2. VIEWS OF PROJECTOR PARTS .....................................................................................................................................8
2-3. REMOTE CONTROL .....................................................................................................................................................12
2-4. BLOCK DIAGRAM .........................................................................................................................................................15
3. TROUBLE SHOOTING..................................................................................................................................20
4. DISASSEMBLY .............................................................................................................................................28
5. FIRMWARE DOWNLOAD.............................................................................................................................37
6. POWERING ON/OFF THE PROJECTOR.....................................................................................................39
7. SECURITY SETTING.....................................................................................................................................41
8. CALIBRATION...............................................................................................................................................44
10. CLEANING...................................................................................................................................................53
11. TIMING MODE TABLE ................................................................................................................................55
12. SCREEN SIZE & PROJECTION DISTANCE..............................................................................................58
13. RJ45.............................................................................................................................................................61
14. PROJECTOR DIMENSIONS.......................................................................................................................66
15. FAN CONTROL TABLE…………………………………………………………………………………………….73
16. RSPL............................................................................................................................................................74

3
Revised History
Ver. Description Date
00 First issue 01-08-2016

4
1. COMPLIANCE OF SAFE REPAIR
Be sure to read this Service Manual before providing services. In the projector, full
consideration is taken to ensure safety for fire, electric shock, injury, harmful radiation, and
substance. Therefore, observe the notice described in this Service Manual so that safety is
kept when providing services. Moreover, be sure to observe the notice described in the
Instruction Manual.
Pay attention to the following items during service inspection.
1-1. Cautions During Disassembling And Assembling
1. This equipment contains parts under high voltage. When making repairs, etc.
Be sure to pull out the power plug beforehand to insure safety.
2. Parts may be very hot immediately after use.
Make sure the equipment has cooled off sufficiently before carrying out repairs.
3. Make sure that parts and screws and wiring, etc. are returned to their original positions.
Tube, tape and other insulation materials have been used for safety reasons.
The internal wiring has been designed to avoid direct contact with hot parts or parts under
high voltage when using clamps or other tools.
4. The parts used in this device have special safety features such as flame-resistance and
anti-voltage properties. When replacing parts, always use parts supplied from the factory.
5. After finishing operations make sure that all parts and wires have been returned to their
original position and that there has been no deterioration of the area around the location that
was worked on.
6. Be sure to use a grounding strap (wrist band) during repair and inspection.
1-2. Lamp
During current conduction, the lamp is in the high-temperature state. In this case, pay
careful attention because a high voltage is used. When replacing a lamp, replace it after
confirming that the lamp has gotten cold sufficiently.
1-3. Lens
Do not look into a lens during projection. This damages your eyes.

5
1-4. Eye Safety Warnings
1. Avoid staring directly into the projector’s beam of light at all times.
2. Minimize standing facing into the beam.
Keep your back to the beam as much as possible.
3. Ensure that projectors are located out of the line of sight from the screen to the audience;
this ensures that, when presenters look at the audience,
they do not also have to stare at the projector lamp.
4. When projector is used in a classroom, adequately supervise students when
they are asked to point out something on the screen.
5. In order to minimize the lamp power needed,
use room blinds to reduce ambient light levels.

6
2. SPECIFICATIONS
2-1. Summary Specifications
Model EK-400X EK-401W EK-402U
Display Type DMD, 0.7” XGA, Type A DMD, 0.65” WXGA, S450 DMD, 0.67” WUXGA, Type A
Resolution XGA (1024x768) WXGA (1280x800) WUXGA (1920x1200)
Projection Distance 1.2m ~ 10m
Projection Screen Size 27.6” ~ 344.6” 25.7” ~ 320.9” 26.7” ~ 334”
Projection Lens Manual Focus / Zoom
Zoom Ratio 1.5x
Vertical Keystone
Correction +/- 40 degrees
Projection Methods Front, Rear, Desktop/Ceiling (Rear, Front)
Data Compatibility VGA, SVGA, XGA, WXGA, SXGA, SXGA+, UXGA, WUXGA, Mac
SDTV/EDTV/ HDTV 480i, 576i, 480p, 576p, 720p, 1080i, 1080p
Video Compatibility NTSC, PAL, SECAM
H-Sync 15, 31 ~ 102KHz
V-Sync 24 ~ 30Hz, 47 ~ 120Hz
Operation Temperature 5° ~ 35°C
Dimensions 334 mm (W) x 256.9 mm (D) x 120.8 mm (H)
AC Input AC Universal 100-240V
Power Consumption 300W (ECO), <0.5W(Stand By) / 370W (Normal), <2W(on by Lan)
Lamp 310W (Normal.) / 245W (ECO)
Audio Speaker 3W mono
Input Terminals
VGA IN x2
Display Port x1
Composite x1
S-Video x1
HDMI x2
Audio-In RCA(L/R) x 1
Audio-In (mini jack) x1
Output Terminals VGA-Out (15pin D-Sub) x 1(only from VGA)

7
Audio-Out (mini jack) x 1
Control Terminals
RS-232C
3D Sync
Screen Trigger: DC Jack x 1 (DC 12V 200mA output function)
USB (Type mini B) – service only
RJ-45
Security Kensington Lock/ Security Bar

8
2-2. Views of Projector Parts
A. Front-Right View
Item Label Description
1. Height adjuster button Push to release height adjuster
2. Height adjuster Adjusts level of projector
3. Lens Projection Lens
4. IR Receiver Receive IR signal from remote control
5. Focus Ring Focuses the projected image
6. Zoom Ring Enlarges the projector image
7. Function Keys See Top view - On Screen Display (OSD) buttons
and LEDs.
Important:
Ventilation openings on the projector allow for good air circulation, which keeps the
projector lamp cool. Do Not obstruct any of the ventilation openings.

9
B. Top View-On Screen Display (OSD) buttons and LEDs
Item Label Description
1. (Up cursor) / Keystone+ Navigates and changes settings in the OSD
Quick Menu – For Keystone.
2. (Right cursor) / Volume+ Navigates and changes settings in the OSD
Quick Menu – For Volume
3. (Down cursor) / Keystone- Navigates and changes settings in the OSD
Quick Menu – For Keystone.
4. MENU Opens and exits OSD menu.
5. ENTER Enter or confirm highlighted OSD menu item.
6. (power button) Turns the projector on or off.
7. SOURCE Enter the source menu.
8. AUTO Optimize image size, position, and resolution.
9. (Left cursor) / Volume- Navigates and changes settings in the OSD
Quick Menu – For Volume
10. LAMP LED Flashing Error Code
11. POWER LED Blue Lamp ready, start, cooling
Flashing Error Code
12. TEMP LED Red Over temperature

10
C. Rear View
Item Label Description
1. AC IN Connect the power cable
2. USB Connect the USB cable from a computer
3. VGA OUT Connect the RGB cable to a display
(Loop thru only for VGA IN 1)
4. LAN Connect a LAN cable from Ethernet
5. VGA IN 1 Connect the RGB cable from a computer or component device
6. VGA IN 2 Connect the RGB cable from a computer or component device
7. DISPLAYPORT Connect the DISPLAYPORY cable from a DISPLAYPORT device
8. AUDIO IN Connect the AUDIO cable from AUDIO device
9. HDMI 1/ 2 Connect the HDMI cable from a HDMI device
10. 3D SYNC Connect the 3D IR glasses transmitter
11. DC 12V TRIGGER
When connected to the screen through a commercially available
cable, the screen deploys automatically on start up of the projector.
The screen retracts when the projector is powered off (see notes

11
below).
12. Speaker Outputs audio sound
13. Kensington Lock Secure to permanent object with a Kensington® Lock system
14. VIDEO IN Connect the COMPOSITE cable from a video device
15. AUDIO IN (LR) Connect the AUDIO cable from a audio device
16. S-VIDEO IN Connect the S-Video cable from a video device
17. RS-232C Connect RS-232 serial port cable for remote control
18. AUDIO OUT Connect an AUDIO cable to audio amplifier
Note:
To use this feature, you must plug in the connector before turn on/off the projector.
Screen controllers are supplied and supported by screen manufacturers.
Do not use this jack for anything other than intended use.
Note:
If your video equipment has both S-VIDEO and RCA jacks (composite video) connect to
the S-VIDEO connector. S-VIDEO provides a better quality signal.
Warning:
As a safety precaution, disconnect all power to the projector and connecting devices
before making connections.

12
2-3. Remote Control
Important:
1. Avoid using the projector with bright fluorescent lighting turned on. Certain high-frequency
fluorescent lights can disrupt remote control operation.
2. Be sure nothing obstructs the path between the remote control and the projector. If the
path between the remote control and the projector is obstructed, you can bounce the signal
off certain reflective surfaces such as projector screens.
3. The buttons and keys on the projector have the same functions as the corresponding
buttons on the remote control. This user’s manual describes the functions based on the
remote control.

13
Item Label Description
1. IR transmitter Transmits signals to projector
2. Status LED Lights when the remote control is used
3. Laser button Press to operate the on-screen pointer
4. Up Emulation of keyboard Up key via USB(Not available in this series)
5. Right Emulation of keyboard Right key via USB(Not available in this series)
6. Down Emulation of keyboard Down key via USB(Not available in this series)
7. Page Down Emulation of keyboard Page_Down key via USB(Not available in this series)
8. Up arrow Up selection when OSD on
9. Right arrow Right selection when OSD on
10. Down arrow Down selection when OSD on
11. Volume +/- Adjusts volume
12. Mute Audio mute
13. Zoom+ Zoom in
14. Zoom- Zoom out
15. Freeze Freeze video
16. Blank Video off
17. Source Input source selection
18. Auto Auto Image display
19. Menu Opens the OSD, or close OSD when on
20. Status Display information OSD
21. Keystone
Top / bottom Corrects image-trapezoid (wider top/bottom) effect
22. Left arrow Left selection when OSD on
23. Changes settings in the OSD
24. Page Up Emulation of keyboard Page_Up key via USB(Not available in this series)
25. Left Emulation of keyboard Left key via USB(Not available in this series)
26. Enter Emulation of keyboard Enter key via USB(Not available in this series)
27. Power Turns the projector on or off
28. Laser Use as on-screen pointer.

14
Remote Control Operating Range
The remote control uses infrared transmission to control the projector. It is not necessary to
point the remote directly at the projector. Provided you are not holding the remote
perpendicular to the sides or the rear of the projector, the remote will function well within a
radius of about 7 meters (23 feet) and 15 degrees above or below the projector level. If the
projector does not respond to the remote control, move a little closer.
Projector and Remote Control Buttons
The projector can be operated using the remote control or the buttons on the top of the
projector. All operations can be carried out with the remote control; however, the buttons on
the projector are limited in use.

15
2-4. Block Diagram

16

17
Explanation of Block Diagram
Input signal processing
RGB(1,2) & Component & VIDEO and S-VIDEO .
The RGB(D-sub15x2 or 5BNC) and COMPONENT input signals are switching output to
ADC front end(AFE1000) . After these signals and VIDEO, S-VIDEO have been
converted into 10-bit digital signals of RGB/YUV each at the A/D converter (U217) , the
resultant signals are output to the scaler (U001).
Digital input system
HDMI/Displayport
The HDMI/Displayport signals input to HDMI switch (U408) then output to HDMI receiver
(U409). The signals are further converted
into 10-bit digital signals of RGB/YCbCr, and then output to the scaler (U001).
Output signals processing
RGB out(D-sub15 black) .
The RGB output signals pass through from VGA1 only by analog switching Ics
(ADA4862).
DDP442X Image processing
−Auto-lock for Std, wide & black border
−Integrated 3D Video Decoder
−DynamicBlack™
−BrilliantColor™
−Dynamic & Anamorphic Scaling w/ Zoom
−1D Keystone Correction
−Frame Rate Conversion
−Color Coordinate Adjustment
−White Color Temperature Adjustment
−Programmable Color Space Conversion
−Programmable Degamma & Splash
−Spatial-Temporal Multiplexing

18
Digital video signal processing
*Scaler (U001)
• The RGB/YCbCr signals are processed for picture quality improvement and matrix
processing at the Scaler circuit.
• The output signals are switched over at the bus line after adjusting color space processing,
auto-adjustment, Degamma etc, these signals are written in the DDRII DRAM(U707).
• The image signals called up from the DDRII DRAM, pass through the definition converter
circuit, ON-screen display, error diffusion circuit for DLP, and output to the optical engine
unit (DLP DMD board).
Timing signal processing
Scaler operates on an external single 32MHz crystal.
Audio signal processing
• The pre-amplifier (U2003) is generated signals with volume control to audio amplifier(U22)
to driver speakers.
System control
The scaler(U001) controls all of this system.
−Built-in Lamp Ballast Control
−DMD Power and Reset Driver Control
−DMD horizontal and vertical Image Flip

19
Power circuit
* Main power supply
• In the state of standby, the power is supplied to the MCU(U700).
• After power ON, the power are provided to the analog circuit,
fan, IO board, etc.
* Lamp power supply
• The lamp is lit with POWER ON.
• Un-lighting detection is performed.
Safety design
• Fan circuit detection
• Lamp cover detection
• Lamp house temperature detection
• Thermal protector for the lamp power supply
• Lamp replacing time

20
3. TROUBLE SHOOTING
• Power Supply Unit malfunction
•Check the connection firmly between of Power Supply BD CN101 and MB
CN701 connection.
• Check keypad BD and MB connection
< Stand-by >
Power：ON
Temp : OFF
Lamp :OFF
< Power supply error >
Power: OFF
Temp: OFF
Lamp: OFF
Yes
Yes
No
Connect the power cord
< System Error >
Power: Blink
Temp: OFF
Lamp: OFF
• Lamp Cover A’ssy is not attached
• Thermal break sensor is open.
• Connector (CN04) on keypad Board disconnected.
Waiting
Power On
No
No
Yes