Acer P7280, P7280rf, P7270irf, P7290 Schematic

SERVICE MANUAL

P7280/P7270I/P7280 Refresh/P7270I Refresh/P7290

Date Revise Version Description

2008.1.24 V1.0 Initial Issue

2008.6.30 V2.0 Add P7280 Refresh/P7270i Refresh

Add Waveform Download in Chapter 5, add Defaul

2008.10.10 V3.0

2009.05.05 V4.0

2009.07.31 V5.0 Add P7290 model

Language in Chapter 6, and modify Chapter 4 and Appnendix B

1. Add the “Universal Password Failure” in Chapter 3

2. Revise FW Upgrade Procedure’s method in Chapter 5

3. Modify the title of 6-6 in Chapter 6

SI : TSE: Check: Approved:

Preface

This manual is applied to P7280/P7270I/P7280 Refresh/P7270I Refresh/P7290 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 is not mentioned in the troubleshooting.

Notice: 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.

P7280/P7270I/P7280 Refresh/P7270I Refresh/P7290

Condential

P7270I/P7280/P7270I Refresh/P7280 Refresh/P7290Refresh/P7290/P7290 Comparison List

Parts P7270I P7270I Refresh P7280 P7280 Refresh P7290

LAMP WARNING LABEL

THERMAL SWITCH

DMD BLOWER

COLOR WHEEL MODULE

ENGINE MODULE

MAIN BD MODULE

I/O BD MODULE

BOTTOM COVER MODULE

BACK COVER MODULE

TOP COVER MODULE

LAMP DRIVER MODULE

INTERLOCK SWITCH

LAMP MODULE

LVPS 75.85H15G001 75.88B07G001 75.8FA01GP01 WIRELESS

MODULE HANDY

DRIVE EXTERNAL

ANTENNA LAMP

BLOWER

70.87Y30GR01 70.89K24GR01 70.87Y30GR01 70.89K24GR01 70.8FA16GR01

70.87Y32GR01 70.87Y43GR01 70.89K17GR01 70.89K25GR01 70.8FA19GR01

70.87Y39GR01 70.87Y42GR01 70.89K22GR01 70.8FA17GR01

35.88E01G002 35.88B04G002

43.87Y01G001 43.89K01G001

N/A 49.89K01G001

70.87Y31GR01 70.89K16GR01

70.87Y33GR01 70.89K18GR01

70.87Y35GR01 70.89K19GR01 70.8FA18GR01

70.87Y37GR01 70.89K20GR01

70.87Y38GR01 70.89K21GR01 70.8FA15GR01

75.87Y04G001 75.89K01G001 75.8FA03G001

SP.87Y01GC01 SP.89K01GC01 SP.8FA01GC01

75.87Y02G002 N/A

75.87Y15G002 N/A

75.87Y11G001 N/A

49.87C01G001 49.8EA01G001

P7280/P7270I/P7280 Refresh/P7270I Refresh/P7290

Condential

Table of Content

Chapter 1 Introduction

Highlight 1-1 Compatible Mode 1-5 Product Overview 1-9

Chapter 2 Disassembly Process

Equipment Needed & Product Overview 2-1 Disassemble Top Cover Module 2-2 Disassemble Lamp Module 2-4 Disassemble Wireless Module (only for P7270I/P7270I Refresh) 2-5 Disassemble Top Shielding Module 2-7 Disassemble Zoom Ring and Focus Ring Module 2-10 Disassemble Back Cover Module 2-11 Disassemble Left and Right Cover Module 2-12 Disassemble Front Cover Module 2-13 Disassemble Front Shielding 2-14 Disassemble Main Board Module and I/O Board Module 2-15 Disassemble Shielding Module 2-17 Disassemble LVPS Module 2-19 Disassemble Fan Module 2-21 Disassemble Engine Module 2-22 Disassemble Color Wheel Module 2-24 Disassemble DMD Board and DMD Chip 2-25 Disassemble Lamp Blower Module 2-26 Disassemble ROD Blower Module 2-27 Disassemble ROD Duct Module 2-28 Disassemble System Duct Module 2-29

P7280/P7270I/P7280 Refresh/P7270I Refresh/P7290

Condential

iii

Disassemble Lamp Driver Module 2-30 Disassemble Lamp Driver Holder (only for P7270I/ P7270I Refresh) 2-31 Disassemble Interrupt Switch Module 2-32 Disassemble Elevator Module 2-33 Rod Adjustment 2-34 Re-write Lamp Usage Hour 2-35 Assemble Elevator Module 2-36 Assemble Interrupt Switch Module 2-37 Assemble Lamp Driver Holder (only for P7270I/ P7270I Refresh) 2-37 Assemble Lamp Driver Module 2-38 Assemble System Duct Module 2-39 Assemble ROD Duct 2-40 Assemble ROD Blower Module 2-40 Assemble Lamp Blower Module 2-41 Assemble DMD Board and DMD Chip 2-41 Assemble Color Wheel Module 2-42 Assemble Thermal Switch 2-42 Assemble Engine Module 2-43 Assemble Fan Module 2-44 Assemble LVPS Module 2-45 Assemble Shielding Module 2-47 Assemble Main Board Module and I/O Board Module 2-49 Assemble Front Shielding 2-51 Assemble Front Cover Module 2-52 Assemble Left and Right Cover Module 2-53 Assemble Back Cover Module 2-54 Assemble Zoom Ring and Focus Ring Module 2-55

P7280/P7270I/P7280 Refresh/P7270I Refresh/P7290

Condential

Assemble Top Shielding Module 2-56 Assemble Wireless Module (only for P7270I/P7270I Refresh)2-58 Assemble Lamp Module 2-60 Assemble Top Cover Module 2-61

Chapter 3 Troubleshooting

LED Lighting Message 3-1 Main Procedure 3-2 Beep Sound 3-6

Chapter 4 Function Test & Alignment Procedure

Test Equipment Needed 4-1 Service Mode 4-1 OSD Reset 4-1 Test Condition 4-2 Test Inspection Procedure 4-3 PC Mode 4-4 Video Performance 4-7 Optical Performance Measure 4-8 Others 4-10 WLAN and LAN Signal Test(only for P7270I/P7270I Refresh) 4-11

Chapter 5 Firmware Upgrade

Equipment Needed 5-1 DLP Composer Lite Setup Procedure 5-2 USB Driver Upgrade Procedure 5-4 Firmware Upgrade Procedure 5-5 Waveform Download (for P7280 Refresh/P7270I Refresh /P7290) 5-8

P7280/P7270I/P7280 Refresh/P7270I Refresh/P7290

Condential

Chapter 6 EDID Upgrade

EDID Introduction 6-1 Equipment Needed 6-2

Setup Procedure (VGA1, VGA2, DVI) 6-3 EDID Key-In Procedure 6-4

Setup Procedure (HDMI) 6-7 Un-lock SNID and Default Language Reset (for P7280 Refresh/P7270I Refresh/P7290) 6-10

Appendix A Exploded Overview I

Appendix B

   SerialNumberSystemDenition     I

Appendix C

RS232 function command summary table I

PCBACodeDenition      II

P7280/P7270I/P7280 Refresh/P7270I Refresh/P7290

Condential

Chapter 1

Introduction

1-1 Highlight

No Item Description

1 Dimensions (W x D x H) ● 403.6 (W) x 315.4 (D) x 119.8 (H) mm 2 Weight

3 Cooling System

4 Lamp Housing

5 DMD Chip ● TI DMD 0.7" 12° LVDS XGA Digital Mirror Device (DC3) 6 Number of active dots ● 1024 (H) x 768 (V)

7 Power Supply

● P7270I Refresh/P7270I/P7290: 12.2 lbs/5.5 kg

● P7280 Refresh/P7280: 12.4 lbs/5.6 kg

● Air Tunnel Flow

● Cooling fans with system optimized acoustic

● Temperature control circuits with adaptive fan rotational speeds

● Maximum touch temperature follows UL60950-1

● Lamp assembly could be changed by customer himself, but should read the user manual for instruction in advance.

● Lamp assembly should be provided by Coretronic and

distribute through authorized agencies

● Universal AC 100 – 240 V ~ 50-60 Hz with PFC input

● Variance FAN speed control (Depends on temperature variant)

● P7270I Refresh/P7270I (280W): Normal mode: 400W+/-10%@110VAC ECO mode: 330W+/-10%@110VAC Standby< 5W (without wireless module) Standby< 13W (with wireless module) (Wireless module stand-by mode < 8W)

8 Power Consumption

P7280/P7270I/P7280 Refresh/P7270I Refresh/P7290

● P7280 Refresh/P7280 (330W):

Normal mode: 450W+/-10%@110VAC ECO mode: 380W+/-10%@110VAC Standby< 5W (without wireless module)

● P7290:

Normal mode: 460W (without wireless module)@110Vac

ECO mode: 385W (without wireless module)@110Vac

Standby < 1W (without wireless module)

Condential 1-1

No Item Description

● Hsync Frequency 30 k~ 100 kHz

● Vsync Frequency 56~ 85 Hz (for P7280/P7270I/ P7280 Refresh/P7270I Refresh)

● Vsync Frequency 50~ 85 Hz (for P7290)

● Video Signal RGB (PC) Analog RGB 0.7Vp-p, 75 ohm, Separate TTL H,V Sync

9 Input signal spec

10 Video Compatibility

Analog RGB 1Vp-p, 75 ohm, Sync. On Green signal Analog RGB 0.7Vp-p, 75 ohm, Composite TTL Sync.

● Video Composite video 1Vp-p,75 ohm S-video Luminance 0.714Vp-p, 75 ohm S-video Chrominance 0.286Vp-p, 75 ohm Component video 1Vp-p, 75 ohm

● Standards : NTSC: M (3.58MHz), 4.43 MHz PAL: B, D, G, H, I, M, N SECAM: B, D, G, K, K1, L HDTV: 720p, 1080i, 1080p EDTV: 480p, 576p SDTV: 480i, 576i

● Two 8-Ohm internal speakers

11 Audio

12 Lamp

13 Throw Distance ● 1.5m~ 10m 14 Throw Ratio ● 1.57~ 1.89: 1 @ 60”

● 3 Watts

● Input sensitivity 0.5Vrms

● 280W for OSRAM E20.6 Lamp @normal operation (for P7270I Refresh/P7270I)

● 330W for Philips Lamp @normal operation (for P7280 Refresh/P7280)

● 350W for Philips Lamp @normal operation (for P7290)

P7280/P7270I/P7280 Refresh/P7270I Refresh/P7290

Condential

1-2

No Item Description

● Engineering spec:

• For P7270I Refresh/P7270I (280W): Typical: 3420 lumens Minimum: 3040 lumens (Compliance with IS021118 criteria)

• For P7280 Refresh/P7280 (330W): Typical: 4050 lumens Minimum: 3600 lumens

15 Brightness

(Compliance with IS021118 criteria)

• For P7290 (350W)

Typical 4500 ANSI Lumens

Minimum 4000 ANSI Lumens (Compliance with ISO21118 brightness criteria)

● Marketing spec:

• 3800 lumens (for P7270I Refresh/P7270I)P7270I Refresh/P7270I)

• 4500 lumens (for P7280 Refresh/P7280)P7280 Refresh/P7280)

• 5000 lumens (for P7290)

● Engineering spec:

• For P7280/P7270I/P7280 Refresh/ P7270I Refresh:

2100 : 1 Full White and Black (Typical) 1500 : 1 Full White and Black (Minimum)

16 Contrast

17 Uniformity

• For P7290:

2700 : 1 Full White and Black (Typical) 1900 : 1 Full White and Black (Minimum)

● Marketing spec:

• 2200:1 (P7280/P7270I/P7280/P7270I/P7280 Refresh/ P7270I Refresh)

• 3150:1 (for P7290)

● Engineering spec:

• 60% Japan standard (Minimum) (for P7280/P7270I/P7280

Refresh/ P7270I Refresh

• 65% Japan standard (Minimum) (for P7290)

• 80% Japan standard (Typical)

● Marketing spec:

• >85%

P7280/P7270I/P7280 Refresh/P7270I Refresh/P7290

Condential

1-3

No Item Description

● Six segments

● 7200 rpm @ CW 2X

● 9000 rpm @ CW 3X, PAL 50Hz (for P7270I Refresh/P7280

18 Color Wheel

Refresh/P7290)

● Segment Angle: R90B82W42C28G90Y28 (for P7280/P7270I/P7280Refresh/P7270I Refresh)

● Segment Angle: R81Y41G84C31W52B71 (for P7290)

● for 0~ 2500 ft, 5~ 35 °C

19 Operation temperature

20 Storage temperature ● -20°C~ 60°C

21 Lamp life

● for 2500~ 5000 ft, 5~ 30 °C

● for 5000~ 10000 ft, 5~ 25 °C

● 2000 hours min, 50% survival rate (Normal mode) (for P7280/ P7270I/P7280 Refresh/ P7270I Refresh)

1500 hours min, 50% survival rate (Normal mode) (for P7290)

● 2500 hours min, 50% survival rate (Eco mode)

P7280/P7270I/P7280 Refresh/P7270I Refresh/P7290

Condential

1-4

1-2 Compatible Mode

A. VGA Analog

1. VGA Analog - PC Signal

Compatibility Resolution V-Sync [Hz] H-Sync [KHz]

640x480 60 31.50

640x480 72 37.90

VGA

SVGA

XGA

SXGA

QuadVGA

SXGA+ 1400x1050 60 65.30

UXGA 1600x1200 60 75.00

Power Mac G4

640x480 75 37.50 640x480 85 43.30

720x400 70 31.50

720x400 85 37.90 800x600 56 35.10 800x600 60 37.90

800x600 72 48.10

800x600 75 46.90 800x600 85 53.70 832x624 75 49.73

1024x768 60 48.40

1024x768 70 56.50

1024x768 75 60.00 1024x768 85 68.70

1152x864 70 63.80

1152x864 75 67.50 1152x864 85 77.10

1280X1024 60 63.98

1280X1024 72 76.97

1280X1024 75 79.98 1280X1024 85 91.10

1280x960 60 60.00 1280x960 75 75.23

640x480 66.6(67) 34.93

800x600 60 37.90 1024x768 60 48.40 1152x870 75 68.68 1280x960 75 75.00

P7280/P7270I/P7280 Refresh/P7270I Refresh/P7290

Condential

1-5

Compatibility Resolution V-Sync [Hz] H-Sync [KHz]

640x480 60 31.35

640x480 66.6(67) 34.93

PowerBook G4

i Mac DV (G3) 1024x768 75 60.00

800x600 60 37.90 1024x768 60 48.40 1152x870 75 68.68 1280x960 75 75.00

2. VGA Analog - Extended Wide timing

Compatibility Resolution V-Sync [Hz] H-Sync [KHz]

1280x768 60 47.80 1280x768 75 60.30 1280x768 85 68.60

WXGA

1280x720 60 44.77 1280x800 60 49.64 1440x900 60 59.90

1680x1050 60 65.29

B. DVI Digital

1. DVI - PC Signal

Compatibility Resolution V-Sync [Hz] H-Sync [KHz]

640x480 60 31.50

640x480 72 37.90

VGA

SVGA

P7280/P7270I/P7280 Refresh/P7270I Refresh/P7290

640x480 75 37.50 640x480 85 43.30

720x400 70 31.50

720x400 85 37.90 800x600 56 35.10 800x600 60 37.90

800x600 72 48.10

800x600 75 46.90 800x600 85 53.70 832x624 75 49.73

Condential

1-6

Compatibility Resolution V-Sync [Hz] H-Sync [KHz]

1024x768 60 48.40

XGA

SXGA

QuadVGA

SXGA+ 1400x1050 60 65.30

UXGA 1600x1200 60 75.00

Power Mac G4

PowerBook G4

i Mac DV (G3) 1024x768 75 60.00

1024x768 70 56.50

1024x768 75 60.00 1024x768 85 68.70

1152x864 70 63.80

1152x864 75 67.50 1152x864 85 77.10

1280x1024 60 63.98

1280x1024 72 76.97

1280x1024 75 79.98 1280x1024 85 91.10

1280x960 60 60.00 1280x960 75 75.23

640x480 66.6(67) 34.93 800x600 60 37.90

1024x768 60 48.40

1152x870 75 68.68

1280x960 75 75.00

640x480 60 31.35 640x480 66.6(67) 34.93 800x600 60 37.90

1024x768 60 48.40

1152x870 75 68.68

1280x960 75 75.00

2. DVI - Extended Wide timing

Compatibility Resolution V-Sync [Hz] H-Sync [KHz]

1280x768 60 47.80 1280x768 75 60.30 1280x768 85 68.60

WXGA

1280x720 60 44.77 1280x800 60 49.64 1440x900 60 59.90

1680x1050 60 65.29

P7280/P7270I/P7280 Refresh/P7270I Refresh/P7290

Condential

1-7

3. DVI - Video Signal

Compatibility Resolution V-Sync [Hz] H-Sync [KHz]

For TWN/USA SKU

480i (NTSC) 720x480(1440x480) 59.94(29.97) 15.734 480p (NTSC) 720x480 59.94 31.469 720p (NTSC) 1280x720 60 44.955

1080i (NTSC) 1920x1080 60(30) 33.716

1080p (NTSC) 1920x1080 60 67.432

For EMEA SKU

576i (PAL) 720x576(1440x576) 50(25) 15.625 576p (PAL) 720x576 50 31.25 720p (PAL) 1280x720 50 37.5

1080i (PAL) 1920x1080 50 28.125

1080p (PAL) 1920x1080 50 56.25

C. HDMI -Digital

1. HDMI - PC Signal and Extended Wide timing: Support above DVI digital timing format.

2. HDMI - Video Signal

Compatibility Resolution V-Sync [Hz] H-Sync [KHz]

For TWN/USA SKU

480i (NTSC) 720x480(1440x480) 59.94(29.97) 15.734 480p (NTSC) 720x480 59.94 31.469 720p (NTSC) 1280x720 60 44.955

1080i (NTSC) 1920x1080 60(30) 33.716

1080p (NTSC) 1920x1080 60 67.432

For EMEA SKU

576i (PAL) 720x576(1440x576) 50(25) 15.625 576p (PAL) 720x576 50 31.25 720p (PAL) 1280x720 50 37.5

1080i (PAL) 1920x1080 50 28.125

1080p (PAL) 1920x1080 50 56.25 Horizontal scan rate: 31k -100 kHz Vertical scan rate: 56k - 85 Hz

P7280/P7270I/P7280 Refresh/P7270I Refresh/P7290

Condential

1-8

1-3 Product Overview

Projector Outlook

Front /Upper side

Item Description Item Description

1 Control panel 6 Remote control receiver 2 Zoom ring 7 Tilt adjusting wheel

3 Focus ring 8 Elevator button 4 Zoom lens 9 Elevator foot

5 Lens cap

P7280/P7270I/P7280 Refresh/P7270I Refresh/P7290

Condential

1-9

Rear side

Item Description Item Description

3 DVI input connector (for digit signal) 15 RS232 connector 4 HDMI connector 16 Audio output connector

5 Top cover release button 17 SPDIF output connector 6 KensingtonTM lock port 18 Power socket

7 Horn 19 8 YPbPr/YCbCr input connector 20

10 S-Video input connector 22 11 Composite video input connector 23

PC analog signal/HDTV/component video input connector (VGA IN 2)

PC analog signal/HDTV/component video input connector (VGA IN 1)

Monitor loop-through output connector (VGA-Out)

Audio input connector (VGA IN 2/ Component/S-video/Composite signal)

13 VGA IN 1/DVID/HDMI with PC signal

14 USB connector

(#)

Wired IR remote input connector

(#)

Antenna

(#)

Lan (RJ45 Port for 10/100M Ethernet)

(#)

Audio output connector for wireless

(#)

Reset button

(#)

Power LED for wireless

Note: “#” Only for P7270i series.

P7280/P7270I/P7280 Refresh/P7270I Refresh/P7290

Condential

1-10

Control Panel

Item Function Description

1 RESYNC

2 MENU

3 TEMP Temp Indicator LED 4 LAMP Lamp Indicator LED

6 SOURCE

7 Empowering key Unique Acer functions: eOpening, eView, eTimer. ePower 8 Infrared transmitter Sends signals to the projector. 9 POWER See the contents in “Turning the Projector On Off” section.

Four directional select keys

Automatically synchronizes the projector to the input source.

• Press “MENU” to launch the Onscreen display (OSD) menu, back to the previous step for the OSD menu operation or exit the OSD menu.

• Conrm your selection of items.

Use to select items or make adjustments to your selection.

Press “SOURCE” to choose RGB, Component, SVideo, Composite, DVI, HDTV and HDMI™ sources.

P7280/P7270I/P7280 Refresh/P7270I Refresh/P7290

Condential

1-11

Remote Control Layout

P7280/P7270I/P7280 Refresh/P7270I Refresh/P7290

Condential

1-12

Item Icon Function Description

Infrared transmitter

Sends signals to the projector.

Laser pointer Aim the remote at the viewing screen

(#)

3 POWER Refer to the “Turning the Projector On/Off” sec

4 RESYNC Automatically synchronizes the projector to the input source. 5 FREEZE To pause the screen image. 6 ASPECT RATIO To choose the desired aspect ratio (Auto/4:3/16:9).

7 ZOOM Zooms the projector display in or out.

Left-/right-click buttons are on the left and right, respectively;

MOUSE Left/ Right Click

the center button works as a multidirectional pointer stick. To enable this function, an USB cable must be connected to projector from your PC.

9 VOLUME Increases/decreases the volume.

Aim the remote at the viewing screen, press and hold this

(#)

Laser button

button to activate the laser pointer. This function is not supported in Japanese market.

Press “SOURCE” to choose from RGB, Component-p,

11 SOURCE

Component-i, S-Video, Composite, DVI-D, Video and HDTV sources.

12 HIDE

Momentarily turns off the video. Press “HIDE” to hide the image, press again to display the image.

13 MUTE To turn on/off the volume.

• Press “MENU” to launch the Onscreen display (OSD) menu,

14 MENU

back to the previous step for the OSD menu operation or exit the OSD menu.

• Conrm your selection of items.

Four directional select keys

KEYSTONE

Use up, down, left, right buttons to select items or make adjustments to your selection.

Adjusts the image to compensate for distortion caused by tilting the projector.

16 LOCATION Choose the menu location on the display screen.

For computer mode only. Use this button to select the next or

17 PAGE

previous page. This function is only available when con-

nected to a computer via a USB cable.

Empowering key

Unique Acer functions: eOpening, eView, eTimer Management.

19 COLOR Press “COLOR” to adjust the color temperature of image. 20 CONTRAST

Use the “CONTRAST” option to control the difference between the lightest and darkest parts of the picture.

21 VIDEO To change source to COMPOSITE VIDEO. 22 S-VIDEO To change source to S-Video.

P7280/P7270I/P7280 Refresh/P7270I Refresh/P7290

Condential

1-13

Item Icon Function Description

Press “PIP” to see two screens at the same time. The main

23 PIP

screen projection signal uses VGA input by default while the smaller PIP display uses a secondary video source.

Press “WIRELESS” to display the image which is wirelessly

(*)

WIRELESS

transmitted from the PC to the projector via the “Acer

eProjection Management” utility. (for wireless model) 25 BRIGHTNESS Press “BRIGHTNESS” to adjust the brightness of the image. 26 RGB Press “RGB” for true-color optimization.

Press “COMPONENT” to change source to Component

27 COMPONENT

video.

This connection supports YPbPr (480p/576p/720p/1080i) and

YCbCr (480i/576i).

Press “VGA” to change source to the VGA connector. This

28 VGA

connector supports analog RGB, YPbPr (480p/576p/720p/

1080i), YCbCr (480i/576i) and RGBsync.

Press “DVI” to change source to DVI. This connection sup29 DVI

ports digital RGB, analog RGB, YPbPr (480p/576p/720p/

1080i), YCbCr (480i/576i) and HDCP signals. 30 HDMI™ To change source to HDMI™. 31 KeyPad 0~9 Press “0~9” to input a password in the “Security settings”.

Note: “*” Only for P7270i series. “#” Japan area is not supported.

P7280/P7270I/P7280 Refresh/P7270I Refresh/P7290

Condential

1-14

Connecting the Projector

Item Description Item Description

1 Power cord 8 DVI cable 2 VGA cable 9 HDMI cable

3 Composite video cable 10 3 RCA component cable 4 USB cable 11 RS232 cable 5 VGA to component/HDTV adapter 12 Audio cable Jack/RCA

6 S-Video cable 13 SPDIF cable

7 Audio cable jack/jack 14 Audio cable Jack for wired remote

Note: To ensure the projector works well with your computer,please make sure the timing of the display mode is compatible with the projector.

P7280/P7270I/P7280 Refresh/P7270I Refresh/P7290

Condential

1-15

Connecting the Projector for Wireless

Item Description Item Description

1 Power cord 3 Lan cable 2 Audio cable jack 4 Antenna

Note: Only for P7270i

P7280/P7270I/P7280 Refresh/P7270I Refresh/P7290

Condential

1-16

System Block Diagram (for P7270I/P7270I Refresh)

P7280/P7270I/P7280 Refresh/P7270I Refresh/P7290

Condential

1-17

Bottom Cover Dimension

82.30 mm

140.00 mm M3,DEPTH:8mm

SCALE 1:2

P7280/P7270I/P7280 Refresh/P7270I Refresh/P7290

Condential

1-18

Chapter 2

Disassembly & Assembly Process

2-1 Equipment Needed & Product Overview

1. Screw Bit (+) :107

2. Hex Sleeves 5mm

3. Long Nose Nipper

4. Screw Bit (+) :102

5. Hex Sleeves 7mm

6. Tweezers

7. Projector

* Before you start: This process is protective level II. Operators should wear electrostatic chains. * Note: 1. If you need to replace the main board, you have to get into service mode and record the

lamp usage hour. please refer to section 2-27.

2. The disassembly and assembly process for P7280/P7270I/P72780 Refresh/P7270I Refresh /P7290 is the same. Here, we take P7270i as an example.

P7280/P7270I/P7280 Refresh/P7270I Refresh/P7290

Condential

2-1

2-2 Disassemble Top Cover

Module

1. Rotate the Top Cover Lock counterclockwise (as red arrow).

2. Pull up the Top Cover (as yellow arrow).

3. Unscrew 4 screws and disassemble the Top Cover Module (as yellow circle).

P7280/P7270I/P7280 Refresh/P7270I Refresh/P7290

Condential 2-2

4. Unscrew 2 screws (as red circle) and disassemble 1 Hinge on each side.

P7280/P7270I/P7280 Refresh/P7270I Refresh/P7290

Condential 2-3

2-3 Disassemble Lamp

Module

1. Unscrew 4 screws (as red circle).

2. Pull up the Lamp Cover from the red square and disassemble Lamp Cover.

3. Unscrew 2 screws (as yellow circle) and disassemble Lamp Module.

P7280/P7270I/P7280 Refresh/P7270I Refresh/P7290

Condential 2-4

2-4 Disassemble Wireless

Module (only for P7270I /P7270I Refresh)

1. Unscrew 3 screws (as red circle) and disassemble Wireless Cover.

2. Unscrew 1 Nut and 1 Washer (as yellow circle).

P7280/P7270I/P7280 Refresh/P7270I Refresh/P7290

Condential 2-5

+ 140 hidden pages