Eiki EK-620U User manual

SERVICE MANUAL
Copyright February 2017 All Rights Reserved
EK-620U/EK-621W
Date Revise Version Description
2017.3.10 V1.0 Initial Issue
(C) 2017 EIKI Industrial Inc,

i
EK-620U/EK-621W
Preface
This manual is applied to EK-620U/EK-621W projection system.The manual gives you a
brief description of basic technical information to help in service and maintain the product.
Your customers will appreciate the quick response time when you immediately identify
problems that occur with our products.We expect your customers will appreciate the
service that you offer them.
This manual is for technicians and people who have an electronic background.Please send
the product back to the distributor for repairing and do not attempt to do anything that is
complex or not mentioned in the troubleshooting.
Note: The information found in this manual is subject to change without prior notice.Any
subsequent changes made to the data herein will be incorporated in future edition.
EK-620U/EK-621W Service Manual
Copyright March 2017
All Rights Reserved
Manual Version Rev 1.0

ii
EK-620U/EK-621W
Table of Content
Chapter 1 Introduction
Highlight 1-1
Compatible Mode 1-3
Chapter 2 Disassembly Process
Equipment Needed & Product Overview 2-1
Disassemble Projector Lens 2-2
Disassemble Top Cover 2-3
Disassemble Main Board Module 2-4
Disassemble Front Cover 2-9
Disassemble Left Cover 2-10
Disassemble IO Cover 2-11
Disassemble Engine Module 2-13
Disassemble LVPS 2-18
Disassemble Bottom Cover Module 2-21
Chapter 3 Troubleshooting
LED Lighting Message 3-1
Main Procedure 3-2
No Power Troubleshooting 3-3
Power Troubleshooting 3-4
Image Troubleshooting 3-5
Remote Troubleshooting 3-7
Network Troubleshooting 3-8

iii
EK-620U/EK-621W
Chapter 4 Test & Inspection
Test Equipment Needed 4-1
Service Mode 4-1
Factory Reset 4-2
Calibration 4-3
Re-write SN 4-7
Adjustment 4-8
Chapter 5 Firmware Upgrade
System Firmware Upgrade 5-1
Recovery Mode 5-7
Appendix A
Exploded Image I
Appendix B Error Log I

1-1EK-620U/EK-621W
1-1 Highlight
Chapter 1
Introduction
No Item
Description
EK-620U EK-621W
1 Dimensions (W x H x D) 484 x 181 x 509 mm (without lens, w/o elevators)
2 Weight (kg)
23.4 kg Net Weight (w/o lens)
24.4 kg Net Weight (with A02 lens)
27.9 kg Gross Weight with package (w/o lens)
3 Power Supply
765W (110V)
AC 100 - 240 V (50Hz / 60Hz)
Stand-by Mode: <0.5W
4 Keystone Correction Horizontal: +/- 20 degrees
Vertical:+/- 20 degrees
5 Brightness Normal Mode: 6500 lm
Eco Mode: 3250 lm
6
Throw Ratio
AH-A22010A (A15)
AH-A22020 (A01)
AH-A22050 (A06)
AH-A21010 (A03)
AH-A23010 (A13)
0.75 ~ 0.95
0.95 ~ 1.22
1.22 ~ 1.53
1.52 ~ 2.92
2.90 ~ 5.50
0.79 ~ 1.00
1.00 ~ 1.28
1.28 ~ 1.61
1.60 ~ 3.07
3.04 ~ 5.78
7 Lens Shift Horizontal: +/- 15%,Vertical: +/-50%
8 Uniformity Typical 90%,Minimum85%(JBMA)
9 Laser Normal mode:20,000 hours ,ECO mode:35000 hours
10 DMD Chip 0.67”WUXGA DMD, Type A, DC3 0.65”WXGA DMD, Type A, DC3
11 I/O Terminal
1 x HDMI (version1.4) (with locking screw)
1 x DVI-D (only support digital signal)
1 x VGA IN(D-Sub 15pin) (Computer In)
1 x HDBaseT
1 x HDMI Out (version1.4) (with locking screw)
1 x VGA Out
1 x 3D SYNC Out

1-2
EK-620U/EK-621W
No Item
Description
EK-620U EK-621W
12 Control Terminal
1 x RS232 (D-sub 9 pin) (PC Control)
1 x Wired in (3.5mm phone jack) (Remote In)
1 x USB type A (for WiFi dongle purpose)
1 x Mini USB (for LAN FW upgrade only) (Service)
1 x RJ45 (LAN)
13 Native Resolution 1920 x 1200 1280 x 800
14 Filter Wheel 4 Segment—RYGB; Filter Diameter: 67 mm
FW Speed: 7200 rpm (x2) / 10800 rpm (x3)
15 Operating Temperature
0~2500 ft: 5~40 ℃
2500~5000 ft: 5~35 ℃
5000~10000 ft: 5~30 ℃

1-3
EK-620U/EK-621W
1-2 Compatible Mode
VGA Analog
- PC Signal
Modes Resolution V.Frequency [Hz] H.Frequency [KHz]
VGA 640 x 480 60 31.47
VGA 640 x 480 72 37.86
VGA 640 x 480 75 37.5
VGA 640 x 480 85 43.27
SVGA 800 x 600 56 35.2
SVGA 800 x 600 60 37.88
SVGA 800 x 600 72 48.08
SVGA 800 x 600 75 46.88
SVGA 800 x 600 85 53.67
XGA 1024 X 768 60 48.36
XGA 1024 X 768 70 56.48
XGA 1024 x 768 75 60.02
XGA 1024 x 768 85 68.67
SXGA 1152 x 864 70 63.8
SXGA 1152 x 864 75 67.5
SXGA 1152 x 864 85 77.1
SXGA 1280 x 1024 60 63.98
SXGA 1280 x 1024 72 77.9
SXGA 1280 x 1024 75 79.98

1-4
EK-620U/EK-621W
- Extended Wide timing
Modes Resolution V.Frequency [Hz] H.Frequency [KHz]
WSVGA 1024 x 600 60 37.3
WXGA 1280 x 768 60 44.78
WXGA 1280 x 768 75 60.29
WXGA 1280 x 768 85 68.63
WXGA 1280 x 720 60 44.8
WXGA 1280 x 800 60 49.6
WXGA 1366 x 768 60 47.71
WXGA+ 1440 x 900 60 55.9
WSXGA 1680 x 1050 60 65.3
WUXGA 1920 x 1080-RB 60 66.6
WUXGA 1920 x 1080-EIA 60 67.5
Modes Resolution V.Frequency [Hz] H.Frequency [KHz]
SXGA 1280 x 1024 85 91.15
Quad VGA 1280 x 960 60 60
Quad VGA 1280 x 960 75 75
SXGA+ 1400 x 1050 60 65.32
UXGA 1600 x 1200 60 75
WUXGA(RB) 1920 x 1200 60 74.038
PowerBook G4 640 x 480 60 31.5
PowerBook G4 640 x 480 66.6(67) 35
PowerBook G4 800 x 600 60 37.88
PowerBook G4 1024 x 768 60 48.36
PowerBook G4 1152 x 870 75 68.68
PowerBook G4 1280 x 960 75 75.2
i Mac DV(G3) 1024 x 768 75 60.3

1-5
EK-620U/EK-621W
- Component signal
Modes Resolution V.Frequency [Hz] H.Frequency [KHz]
VGA 640 x 480 60 31.47
VGA 640 x 480 72 37.86
VGA 640 x 480 75 37.5
VGA 640 x 480 85 43.27
SVGA 800 x 600 56 35.2
SVGA 800 x 600 60 37.88
SVGA 800 x 600 72 48.08
SVGA 800 x 600 75 46.88
SVGA 800 x 600 85 53.67
XGA 1024 x768 60 48.36
XGA 1024 x768 70 56.48
XGA 1024 x768 75 60.02
XGA 1024 x768 85 68.67
SXGA 1152 x 864 70 63.8
SXGA 1152 x 864 75 67.5
SXGA 1152 x 864 85 77.1
Modes Resolution V.Frequency [Hz] H.Frequency [KHz]
480i 720 x 480 59.94(29.97) 27
480p 720 x 480 59.94 31.47
576i 720 x 576 50(25) 27
576p 720 x 576 50 31.25
720p 1280 x 720 60 45
720p 1280 x 720 50 37.5
1080i 1920 X 1080 60(30) 33.75
1080i 1920 X 1080 50(25) 33.75
1080p 1920 x 1080 60 67.5
1080p 1920 x 1080 50 56.25
HDMI - PC Signal
- PC Signal

1-6
EK-620U/EK-621W
- HDMI - Extended Wide timing
Modes Resolution V.Frequency [Hz] H.Frequency [KHz]
WSVGA 1024 x 600 60 37.3
WXGA 1280 x 768 60 47.78
WXGA 1280 x 768 75 60.29
WXGA 1280 x 768 85 68.63
WXGA 1280 x 720 60 44.8
WXGA 1280 x 800 60 49.6
WXGA 1366 x 768 60 47.71
WXGA+ 1440 x 900 60 55.9
WSXGA 1680 x 1050 60 65.3
WUXGA 1920x1080-RB 60 66.6
WUXGA 1920x1080-EIA 60 67.5
WUXGA 1920x1200-RB 59.95 74.04
Modes Resolution V.Frequency [Hz] H.Frequency [KHz]
SXGA 1280 x 1024 60 63.98
SXGA 1280 x 1024 72 77.9
SXGA 1280 x 1024 75 79.98
SXGA 1280 x 1024 85 91.15
Quad VGA 1280 x 960 60 60
Quad VGA 1280 x 960 75 75
SXGA+ 1400 x 1050 60 65.32
UXGA 1600 x 1200 60 75
PowerBook G4 640 x 480 60 31.5
PowerBook G4 640 x 480 66.6(67) 35
PowerBook G4 800 x 600 60 37.88
PowerBook G4 1024 x 768 60 48.36
PowerBook G4 1152 x 870 75 68.68
PowerBook G4 1280 x 960 75 75.2
i Mac DV(G3) 1024 x 768 75 60.3
WUXGA(RB) 1920 x 1200 60 74.038

1-7
EK-620U/EK-621W
- HDMI - Video Signal
Note: If the Computer Compatibility supportive signal is different from User’s Manual,
please refer to User’s Manual.
Modes Resolution V.Frequency [Hz] H.Frequency [KHz]
480i 720 x 480 59.94(29.97) 27
480p 720 x 480 59.94 31.47
576i 720 x 576 50(25) 27
576p 720 x 576 50 31.25
720p 1280 x 720 60 45
720p 1280 x 720 50 37.5
1080i 1920 X 1080 60(30) 33.75
1080i 1920 X 1080 50(25) 33.75
1080p 1920 x 1080 60 67.5
1080p 1920 x 1080 50 56.25
1080p 1920 x 1080 23.97/24 27

EK-620U/EK-621W 2-1
Chapter 2
Disassembly Process
2-1 Equipment Needed & Product Overview
1. Screw Bit (+) :105
2. Screw Bit (+) :107
3. Screw Bit (-) :107
4. Hex Sleeves 5 mm
5. Tweezers
6. Knife
7. Projector
* Before you start:
- This process is protective level II. Operators should wear electrostatic chains.
- When disassemble Engine module , please notice that it require specific environmental
conditions (clean room).

EK-620U/EK-621W 2-2
2-2 Disassemble Projector
Lens
1. Remove the lens cover (as blue arrow).
Projector lens
2. Rotate the lens carefully (as red arrow),
then remove it out carefully.
Note: - Please hold lens module in the
right way.
- Be careful not to dirty the glass
of the lens module.
- Be careful not to touch the motor
of the lens module
Lens cover
Wrong Right

EK-620U/EK-621W 2-3
2-3 Disassemble Top Cover
1. Loosen 4 black screws (as red circle).
2. Loosen 8 screws (as green circle).
3.Take the top cover module out.

EK-620U/EK-621W 2-4
2-4 Disassemble Main Board
Module
1. Take out the top IR board from the hook.
2. Loosen 18 screws to disassemble top
shielding (as green circle).
3. Loosen 2 screws to disassemble LED
board (as red circle).
LED board
IR board

EK-620U/EK-621W 2-5
4. Loosen 3 screws and 10 hexes (as red
circle).
5.Loosen 9 screws to disassemble main
board (as green circle).
6.Loosen 3 screws to disassemble IO
board (as red circle).

EK-620U/EK-621W 2-6
IO board
Main board
Item
Male Connector
on Connector
Board
The key feature Figure
J5 KEYPAD CONN White connector (30 pin)
J35/J34 FAN10/FAN4 Composed of black,blue,gray,red wires
white connector (4pin)
J33/J32 FAN9/FAN8 Composed of black, green, gray, and red
wires, white connector (4 pin)
J23 P/W FPC FPC

EK-620U/EK-621W 2-7
Item Male Connector
on Connector Board The key feature Figure
J38 FAN6 Composed of black, green, gray, and
red wires, a white connector (4 pin)
J25 F/W SENSOR Composed of white, black, and red
wires, a red connector (3 pin)
J22 F/W FPC FPC
J44/J47 H SENSOR L/ V
SENSOR B
Composed of two white wires, a white
connector (2 pin)
J14 LIGHT SENSOR 2
Composed of white, yellow, pink,
brown, black, and red wires, a white
connector (6 pin)
J48 LD DRIVER Composed of a white connector, and a
black wire tube (20 pin)
J46 V SENSOR T Composed of two blue wires, a white
connector, a black wire tube (2 pin)
J43 H SENSOR R Composed of two red wires, a white
connector, a black wire tube (2 pin)
J45/J42 V POWER/ H
POWER
Composed of yellow, white, red, and
blue wires, a white connector (4 pin)

EK-620U/EK-621W 2-8
Item Male Connector
on Connector Board The key feature Figure
J39 ZOOM/FOCUS Composed of white, yellow, pink,
brown, black, and red wires (six pin)
J8 FRONT IR Composed of red, black, and white
wires, a green connector (3 pin)
J9 LIGHT SENSOR Composed of black, yellow, and red
wires, a white connector (6 pin)
J1 LVPS Composed of a white connector, and a
black wire tube (22 pin)
J24 P/W SENSOR Composed of white, black, and red
wires, a red connector (3 pin)
J36/J37
J31/J30
J29
FAN7/FAN5/FAN3/
FAN2
FAN1
Composed of black, blue, gray, and
brown wires, a white connector (4 pin)
7.Loosen 6 screws to disassemble bottom
shielding (as green circle).

EK-620U/EK-621W 2-9
2-5 Disassemble Front
Cover
1.Loosen 9 screws to disassemble front
cover (as red circle).
2.Loosen 6 screws to disassemble bracket
(as green circle).