Acer P7280 User manual

SERVICE MANUAL
SI : TSE: Check: Approved:
Date Revise Version Description
2008.1.24 V1.0 Initial Issue
2008.6.30 V2.0 Add P7280 Refresh/P7270i Refresh
2008.10.10 V3.0
Add Waveform Download in Chapter5, add Default
Language in Chapter6, and modify Chapter4 and
AppendixB
P7280/P7270I/P7280 Refresh/P7270I Refresh
Copyright Oct.2008 All Rights Reserved P/N: 36.89K01G001

P7280/P7270I/P7280 Refresh/P7270I Refresh Condential
I
Parts P7270I P7270I Refresh P7280 P7280 Refresh
LAMP WARNING LABEL 35.88E01G002 35.88B04G002
THERMAL SWITCH 43.87Y01G001 43.89K01G001
DMD BLOWER N/A 49.89K01G001
COLOR WHEEL MOD-
ULE
70.87Y30GR01 70.89K24GR01 70.87Y30GR01 70.89K24GR01
ENGINE MODULE 70.87Y31GR01 70.89K16GR01
MAIN BD MODULE 70.87Y32GR01 70.87Y43GR01 70.89K17GR01 70.89K25GR01
I/O BD MODULE 70.87Y33GR01 70.89K18GR01
BOTTOM COVER MOD-
ULE
70.87Y35GR01 70.89K19GR01
BACK COVER MODULE 70.87Y37GR01 70.89K20GR01
TOP COVER MODULE 70.87Y38GR01 70.89K21GR01
LAMP DRIVER MODULE 70.87Y39GR01 70.87Y42GR01 70.89K22GR01
INTERLOCK SWITCH 75.87Y04G001 75.89K01G001
LAMP MODULE SP.87Y01GC01 SP.89K01GC01
LVPS 75.85H15G001 75.88B07G001
WIRELESS MODULE 75.87Y02G002 N/A
HANDY DRIVE 75.87Y15G002 N/A
EXTERNAL ANTENNA 75.87Y11G001 N/A

P7280/P7270I/P7280 Refresh/P7270I Refresh Condential III
Preface
This manual is applied to P7280/P7270I/P7280 Refresh/P7270i Refresh 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 Service Manual
Copyright Oct.2008
All Rights Reserved
Manual Version 3.0

P7280/P7270I/P7280 Refresh/P7270I Refresh Condential
IV
Table of Content
Chapter 1 Introduction
Highlight 1-1
Compatible Mode 1-4
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 Ship 2-25
Disassemble Lamp Blower Module 2-26
Disassemble ROD Blower Module 2-27
Disassemble ROD Duct Module 2-28

P7280/P7270I/P7280 Refresh/P7270I Refresh Condential
V
Disassemble System Duct Module 2-29
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 Module 2-40
Assemble ROD Blower Module 2-40
Assemble Lamp Blower Module 2-41
Assemble DMD Board and DMD Ship 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 Module 2-51
Assemble Front Cover Module 2-52
Assemble Left and Right Cover Module 2-53

P7280/P7270I/P7280 Refresh/P7270I Refresh Condential
VI
Assemble Back Cover Module 2-54
Assemble Zoom Ring and Focus Ring Module 2-55
Assemble Top Shielding Module 2-55
Assemble Wireless Module (only for P7270i/P7280 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 3-3
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 4-3
  Defectspecicationtable     4-7
Video Performance 4-7
Optical Performance Measure 4-9
Other 4-10
WLAN and LAN Signal Test(only for P7270I/P7270i Refresh)
4-13

P7280/P7270I/P7280 Refresh/P7270I Refresh Condential
VII
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 5-8
Chapter 6 EDID Upgrade
EDID Introduction 6-1
Equipment Needed 6-2
Setup Procedure 6-3
EDID Key-In Procedure 6-3
Setup Procedure (HDMI) 6-7
Default Language Reset 6-10
Appendix A
Exploded Overview I
Appendix B
SerialNumberSystemDenition    II
PCBACodeDenition      III
Appendix C
RS232 function command summary table I

P7280/P7270I/P7280 Refresh/P7270I Refresh Condential 1-1
Chapter 1
Introduction
1-1 Highlight
No Item Description
1Dimensions (WxDxH) - 403.6 (W) x 315.4(D) x 119.8(H) mm
2Weight - P7270i Refresh /P7270i : 12.2 lbs / 5.5 kg
- P7280 Refresh/P7280 : 12.4 lbs / 5.6 kg
3Cooling System
- Air Tunnel Flow
- Cooling fans with system optimized acoustic
- Temperature control circuits with adaptive fan rotational
speeds
- Maximum touch temperature follows UL60950-1
4Lamp housing
- 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
5 DMD Chip - TI DMD 0.7” 12° LVDS XGA Digital Mirror Device (DC3)
6Number of active dots - 1024(H) x 768(V)
7 Power Supply
- Universal AC 100 – 240 V ~ 50-60 Hz with PFC input
- Variance FAN speed control (Depends on temperature
variant)

P7280/P7270I/P7280 Refresh/P7270I Refresh Condential 1-2
No Item Description
8Power Consumption
- 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)
- P7280 Refresh /P7280 (330W):
Normal mode: 450W+/-10%@110VAC
ECO mode: 380W+/-10%@110VAC
Standby< 5W (without wireless module)
9 Input signal spec
- Hsync Frequency 31k-100k Hz
- Vsync Frequency 56 ~ 85 Hz
- Video Signal RGB (PC)
Analog RGB 0.7Vp-p, 75 ohm, Separate TTL H,V Sync
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
10 Video Compatibility
- 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
11 Audio
- Two 8-Ohm internal speakers
- 3 Watts ( driver 2W)
- Input sensitivity 0.5Vrms
12 Lamp
- 280W for OSRAM E20.6 Lamp @ normal operation (for
P7270i Refresh/ P7270i)
- 330W for Philips Lamp @ normal operation (for P7280 Re
fresh / P7280)
13 Throw Distance - 1.5m – 10m

P7280/P7270I/P7280 Refresh/P7270I Refresh Condential 1-3
No Item Description
14 Throw Ratio - 1.57 – 1.89 : 1 @ 60”
15 Brightness
Engineering spec:
- P7270i Refresh/ P7270i (280W):
Typical: 3420 lumens
Minimum: 3040 lumens
(Compliance with IS021118 criteria)
- P7280 Refresh / P7280 (330W):
Typical: 4050 lumens
Minimum: 3600 lumens
(Compliance with IS021118 criteria)
Marketing spec:
- 3800 lumens
- 4500 lumens
16 Contrast
Engineering spec:
- 2100 : 1 Full White and Black (Typical)
- 1500 : 1 Full White and Black (Minimum)
Marketing spec:
- 2200:1 (Typical)
- 2037 (Minimum)
17 Uniformity
Engineering spec:
- 60% Japan standard (Minimum)
- 80% Japan standard (Typical)
Marketing spec:
- >85% (Typical)
- >75% (Minimum)
18 Color Wheel
- Six segments: R90B82W42C28G90Y28
- 7200 rpm @ CW 2X
- 9000 rpm @ CW 3X, PAL 50Hz (for P7270I Refresh /P7280
Refresh)
19 Operation temperature
- for 0 -- 2500 ft, 5 -- 35 °C
- for 2500 -- 5000 ft, 5 -- 30 °C
- for 5000 -- 10000 ft, 5 -- 25 °C
20 Storage temperature - -20°C - 60°C
21 Lamp life - 2000 hours min, 50% survival rate (Normal mode)
- 2500 hours min, 50% survival rate (Eco mode)

P7280/P7270I/P7280 Refresh/P7270I Refresh Condential 1-4
1-2 Compatible Mode
A. VGA Analog
1 VGA Analog - PC Signal
Compatibility Resolution V-Sync [Hz] H-Sync [KHz]
VGA
640x480 60 31.50
640x480 72 37.90
640x480 75 37.50
640x480 85 43.30
720x400 70 31.50
720x400 85 37.90
SVGA
800x600 56 35.10
800x600 60 37.90
800x600 72 48.10
800x600 75 46.90
800x600 85 53.70
832x624 75 49.73
XGA
1024x768 60 48.40
1024x768 70 56.50
1024x768 75 60.00
1024x768 85 68.70
SXGA
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
QuadVGA 1280x960 60 60.00
1280x960 75 75.23
SXGA+ 1400x1050 60 65.30
UXGA 1600x1200 60 75.00
Power Mac G4
640x480 66.6(67) 34.93
800x600 60 37.90
1024x768 60 48.40
1152x870 75 68.68
1280x960 75 75.00
PowerBook G4 640x480 60 31.35
640x480 66.6(67) 34.93

P7280/P7270I/P7280 Refresh/P7270I Refresh Condential 1-5
Compatibility Resolution V-Sync [Hz] H-Sync [KHz]
800x600 60 37.90
1024x768 60 48.40
1152x870 75 68.68
1280x960 75 75.00
i Mac DV (G3) 1024x768 75 60.00
2 VGA Analog - Extended Wide timing
Compatibility Resolution V-Sync [Hz] H-Sync [KHz]
WXGA
1280x768 60 47.80
1280x768 75 60.30
1280x768 85 68.60
1280x720 60 44.77
1280x800 60 49.64
1440x900 60 59.90
1680x1050 60 65.29

P7280/P7270I/P7280 Refresh/P7270I Refresh Condential 1-6
Compatibility Resolution V-Sync [Hz] H-Sync [KHz]
VGA
640x480 60 31.50
640x480 72 37.90
640x480 75 37.50
640x480 85 43.30
720x400 70 31.50
720x400 85 37.90
SVGA
800x600 56 35.10
800x600 60 37.90
800x600 72 48.10
800x600 75 46.90
800x600 85 53.70
832x624 75 49.73
XGA
1024x768 60 48.40
1024x768 70 56.50
1024x768 75 60.00
1024x768 85 68.70
SXGA
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
QuadVGA 1280x960 60 60.00
1280x960 75 75.23
SXGA+ 1400x1050 60 65.30
UXGA 1600x1200 60 75.00
Power Mac G4
640x480 66.6(67) 34.93
800x600 60 37.90
1024x768 60 48.40
1152x870 75 68.68
1280x960 75 75.00
PowerBook G4
640x480 60 31.35
640x480 66.6(67) 34.93
800x600 60 37.90
1024x768 60 48.40
1152x870 75 68.68
B. DVI Digital
1 DVI - PC Signal

P7280/P7270I/P7280 Refresh/P7270I Refresh Condential 1-7
Compatibility Resolution V-Sync [Hz] H-Sync [KHz]
1280x960 75 75.00
i Mac DV (G3) 1024x768 75 60.00
2 DVI - Extended Wide timing
Compatibility Resolution V-Sync [Hz] H-Sync [KHz]
WXGA
1280x768 60 47.80
1280x768 75 60.30
1280x768 85 68.60
1280x720 60 44.77
1280x800 60 49.64
1440x900 60 59.90
1680x1050 60 65.29
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

P7280/P7270I/P7280 Refresh/P7270I Refresh Condential 1-8
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
C. HDMI -Digital
1 HDMI - PC Signal and Extended Wide timing: Support above DVI
digital timing format.
2 HDMI - Video Signal

P7280/P7270I/P7280 Refresh/P7270I Refresh Condential 1-9
Product Overview
Projector Outlook
Front /Upper side
Item Description Item Description
1Control panel 6Remote control receiver
2Zoom ring 7Tilt adjusting wheel
3Focus ring 8Elevator button
4Zoom lens 9 Elevator foot
5 Lens cap

P7280/P7270I/P7280 Refresh/P7270I Refresh Condential 1-10
Rear side
Item Description Item Description
1PC analog signal/HDTV/component
video input connector (VGA IN 2) 13 VGA IN 1/DVID/HDMI with PC signal
2PC analog signal/HDTV/component
video input connector (VGA IN 1) 14 USB connector
3DVI input connector (for digit signal) 15 RS232 connector
4HDMI connector 16 Audio output connector
5 Top cover release button 17 SPDIF output connector
6KensingtonTM lock port 18 Power socket
7Horn 19(#) Wired IR remote input connector
8YPbPr/YCbCr input connector 20(#) Antenna
9Monitor loop-through output
connector (VGA-Out) 21(#) Lan (RJ45 Port for 10/100M Ethernet)
10 S-Video input connector 22(#) Audio output connector for wireless
11 Composite video input connector 23(#) Reset button
12
Audio input connector (VGA IN 2/
Component/S-video/Composite
signal)
24(#) Power LED for wireless
Note: “#” Only for P7270i series.

P7280/P7270I/P7280 Refresh/P7270I Refresh Condential 1-11
Control Panel
Item Function Description
1RESYNC Automatically synchronizes the projector to the
input source.
2MENU
• 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.
3TEMP Temp Indicator LED
4LAMP Lamp Indicator LED
5 Four directional select keys Use to select items or make
adjustments to your selection.
6SOURCE
Press “SOURCE” to choose RGB, Component, SVideo,
Composite, DVI, HDTV and HDMI™
sources.
7Empowering key Unique Acer functions: eOpening, eView, eTimer. ePower
8Infrared transmitter Sends signals to the projector.
9 POWER See the contents in “Turning the Projector On Off” section.

P7280/P7270I/P7280 Refresh/P7270I Refresh Condential 1-12
Remote Control Layout

P7280/P7270I/P7280 Refresh/P7270I Refresh Condential 1-13
Item Icon Function Description
1Infrared
transmitter Sends signals to the projector.
2 (#) Laser pointer Aim the remote at the viewing screen
3POWER Refer to the “Turning the Projector On/Off” sec
4RESYNC Automatically synchronizes the projector to the input source.
5 FREEZE To pause the screen image.
6ASPECT RATIO To choose the desired aspect ratio (Auto/4:3/16:9).
7 ZOOM Zooms the projector display in or out.
8MOUSE Left/
Right Click
Left-/right-click buttons are on the left and right, respectively;
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.
10 (#) Laser button
Aim the remote at the viewing screen, press and hold this
button to activate the laser pointer.
This function is not supported in Japanese market.
11 SOURCE
Press “SOURCE” to choose from RGB, Component-p,
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.
14 MENU
• 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.
15
Four directional
select keys
Use up, down, left, right buttons to select items or make
adjustments to your selection.
KEYSTONE Adjusts the image to compensate for distortion caused by
tilting the projector.
16 LOCATION Choose the menu location on the display screen.
17 PAGE
For computer mode only. Use this button to select the next or
previous page. This function is only available when connected
to a computer via a USB cable.
18 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.
23 PIP
Press “PIP” to see two screens at the same time. The main
screen projection signal uses VGA input by default while the
smaller PIP display uses a secondary video source.