Optoma Optoma ThemeScene H77 User manual

Model Name : H77
SERVICE MANUAL
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Prepared by SI :
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Prepared by TSE :
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Check by :
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Approved by :
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CopyrightApril, 2004 . All Rights Reserved
Document #81E-G04-01A . P/N: 36.81E03.001

ThismanualisappliedtoH770.79”DMDSXGA HomeTheaterProjectorwithdigitalimagingfunctional-
itybased onDigitalMicro-mirrorDevice (DMD) technology. It’sthe mode ofsinglePanel,250 watt
PhilipsUHPlampand 1280(H) x 720(V)resolution. Themanual gives you abriefdescriptionofbasic
technicalinformationtohelpinserviceandmaintainingtheproduct.
Yourcustomerswillappreciatethequickresponsetimewhenyouimmediatelyidentifyproblemsthatoccur
withour products. We expectyour customerswillappreciate theservicethat youoffer them.
This manual is for technicians and people who have an electronic background. Send the product back to
thedistributor for repairingand donotattemptto do anythingthatis complexoris notmentionedin the
troubleshooting.
NOTICE:
Theinformationfoundinthismanualissubjecttochangewithoutpriornotice.Anysubsequentchanges
madeinthedatahereinwill be incorporatedin further edition.
Copyright2004,April
AllRightsReserved
ManualVersion1.0
Document # 81E-G04-01A
Preface
H77I

H77II
Table of Contents
Chapter 1 Introduction 1-1
Product Highlights 1-1
Mechanical Specifications 1-2
Electrical Specifications 1-2
Optical Specifications 1-5
Environmental Specifications 1-5
Chapter 2 Disassembly Procedure 2-1
Tools Needed 2-1
emoving Lamp Module 2-2
emoving I/O Panel, Top Cover and Keypad Board 2-3
emoving Thermal Board, Main Board,
Connector Board and Power Module 2-5
emoving Fan Module(92x25mm), Lamp Ballast,
Power Board and DMD Board 2-7
emoving DMD Chip, Front Panel Module
and Fan Module (50x15mm) 2-9
emoving Air Duct Module, Engine Module and Fan Module 2-10
Chapter 3 Troubleshooting 3-1
Equipment Needed 3-1
Main Procedure 3-1
Chapter 4 Function Test and lignment Procedure 4-1
Product 4-1
Test Equipment 4-1
Test Condition 4-1
Test Display Modes and Pattern 4-2
Inspection Procedure 4-6
Chapter 5 Firmware Upgrade Procedure 5-1
Equipment Needed 5-1
Setup Procedure 5-2
Firmware Upgrade Procedure 5-3

Chapter 6 DDC Key-in Procedure 6-1
Equipment Needed 6-1
Setup Procedure 6-2
DDC Key-in Procedure 6-3
ppendix Exploded Overview 7-1
ppendix B Serial Number System Definition 7-19
eaders esponse 7-20

H771-1
Chapter 1
Introduction
1-1 Product Highlights
-One HD2 2.5G 0.79" DMD projection system with 540 ANS lumens (Minimim
Engineering spec. condition : Spoke on), 80% uniformity minimum (ANS )( con-
dition offset = 0 %)
-Contrast (Full on/Full off) : 2500 : 1 (Typical), 2200:1 (Minimum Engineering
spec.) ( Meter : Minolta T10 )
-250 - Watt Philips UHP Lamp. Lamp life 1500 hours, Eco mode 3000 hours
-High efficiency cooling system with system acoustic noise level 32+/-2 dB(A)
(Normal-mode) / 28+/-2 dB (A) (Eco- mode)
( condition : @1atm, 23 degree C+/-2)
-Lens Up/Down Shift construction
-Adjustable Feet (+/- 3 degrees)
-Dimensions : 430mm x 305mm x 135mm (External Max size)
-Motorized focus projection and zoom lens 1.35X
-8 segments GgRBGgRB color wheel spinning at 150Hz
-Computer capability up to UXGA 60Hz for Analog and XGA 75Hz for Digital nputs
-NTSC/PAL/SECAM video capability with S-video / composite / component, and
HDTV(480i/p, 576i/p, 720p, 1080i)
-Separately R/G/B/H/V BNC input supported.
-Auto detection of computer signal input(Auto-tracking /frequency /position
adjustment).
-Source Lock Feature
-Automatically saves adjustments for future use
-On-screen menu with 10 languages
-On screen lamp life timer.
-One DV PC-data input ( ncluding Analog and Digital RGB signal )
-Support HDCP function
-No High Altitude Mode function supports in OSD

H771-2
1-2 Mechanical Specifications
Dimensions(WxHxD) - 16.9(W) x 12.0 (D) x 5.3 (H) inches (430 x 305 x 135mm)
Weight - < 17.1 lbs. (7.8 Kg)
CoolingSystem - Advanced AirFlow
- Threefanswithsystemacousticnoiselevel:53dB(A)(Typical)
- Temperaturecontrolcircuitswithadaptivevoltagecontrolfan
speed
- MaxtouchtemperaturefollowsUL60950regulation
Color - Top and Fromt Cover : Silver ; Bottom Cover : Black
LampDoorProtection - Lamppowersupplyshutsoffautomatically when door opens
1-3 Electrical Specifications
PowerSupply
- UniversalAC 90-264V~50-60 Hz with PFC input
250WforPhilipsUHPLampatnormal operation
Powerconsumption
- 330W +/- 10% (Operating@110V), 3.08A+/- 10% (Operating@110V)
13.5Wmaximum(Stand-by@110V),19Wmaximum(Stand-by@230V)
Inputsignalspec.
- Hsync Frequency 31.5~91.1 kHz
- Vsync Frequency 43~85 Hz
- VideoSignal RGB(PC)
Analog RGB 0.7Vp-p, 75 ohm
Analog RGB 1 Vp-p, 75 ohm, Sync. Signal
Separate TTL H, V Sync.
CompositeTTLSync.
- Video
Composite video 1Vp-p, 75 ohm
S-video Luminance 0.714Vp-p, 75 ohm
S-video Chrominance 0.286Vp-p, 75 ohm

H771-3
VideoCompatibility
- Standards:
NTSC - M, 4.43 MHz
PAL - B, D,G, H, I
SECAM - B, G, H, K, K1, L
HDTV - 480i, 480p, 576i, 576p, 720p, 1080i
- TVLines - 500 lines
Keystone
- Vertical : +/- 16 degree (Desk-projector angle)
- Horizontal : +/- 7 degree (Screen-projector angle)
Control Key Pad
- 9 keys
“POWER/ STNADBY”
“SOURCE”
“RE-SYNC”
“Up/Down /Left / Right/ Enter/ Menu” Buttons
Indicator
- “Lamp” Red
- “Temp” Orange
- “Power” Blue
- Keypadbackground Green
On-ScreenMenu
- Multi-language:English,Dutch,French,Italian,Spanish,
Portuguese,Japanese,TraditionalChinese,SimplifiedChinese,andKorean.
4mainitems(Picture,Image,System,Display)

H771-4
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IR Remote Controller 22 Keys

H771-5
1-4 Optical Specifications
ProjectionLens - f = 28.3 ~ 38.2mm, F/3.4, 1.35X Manual Zoom Lens.
ProjectionImageSize - 30”to280”Diagonal(Wide)
ThrowDistance - 3.28 ft to 32.80 ft / 1.0m to 10m (Wide).
ThrowRatio - 1.6 ~ 2.16 (ProjectionDistance / Image Width)
Tolerance - Throw ratio <= + / - 5%
Lens shift <= + / - 5%
Brightness - 540ANSIlumens(MinimumEngineeringspec.),
(Spoke on @ 5x color wheel spindle speed)
Contrast - Fullon /Fulloff:Typical2500 :1/ Minimum2200: 1
(Spoke on / Spoke off)
Uniformity - TypicalANSI85%/Minimum80%
1-5 Environmental Specifications
Temperature :
- Operating : 5° ~ 35°C
- Storage : -10° ~ 60°C
Maximum Humidity
- Operating : 5oC ~ 35 oC, 80%RH (Max.), non-condensing
Storage : -10oC ~ 60oC, 80%RH (Max.), non-condensing
Acoustic noise level
- 32 +/- 2 dB(A) Standard (Typical, Under 23 +/- 2oC@1 atm), noise measurement
28 +/- 2 dB(A) Eco (Typical, Under 23 +/- 2oC@1 atm), noise measurement

H771-6
LampLife
- 1500hours min.,50%survial rate(Normalmode)
- 3000 hours min., 50% survial rate (Eco mode)
Altitude
- Operating 0~2,500 ft 5oC~35oC
2,500~5,000 ft 5oC~30oC
5,000~10,000 ft 5oC~25oC
- Storage 40,000 ft
MTBF
- Operatingmore than 12,000 hours(90%confidence level)

H772-1
Chapter 2
Disassembly Procedure
Tools Needed
Screw Bit (+) : 107
Screw Bit (+) : 102
HexSleeves 5mm(TOP)
LongNoseNipper
AngleCuttingNipper
Ball-endhex-key3mm

H772-2
2-1 Removing Lamp Module
1. Unscrew one screw and push the Lamp Cover.
Note : Be careful that Lamp Cover has the tenon inside.
2. Loosen 3 screws to remove Lamp Module.

H772-3
1. Unscrew 4 hex screws to remove I/O Panel.
2. Unscrew 11 screws, and then open Top Cover and unplug one FPC cable to remove Top
Cover.
2-2 Removing I/O Panel, Top Cover and Keypad Board

H772-4
3. Unscrew 10 screws to remove Keypad Board, Keypad and Lens ShiftGear Module.
Keypad Board
Keypad
LensShiftGearModule
4. Unscrew 8 screws to remove brackets.

H772-5
1. Unscrew 2 screws and unplug 8 wires to removeThermal Board.
2-3 Removing Thermal Board, Main Board,
Connector Board and Power Module
2. Unscrew 9 screws(a stand off shoulder & spring) on the Main Board, unscrew 4 screws on
Connector Board and remove them.
3. Unscrew 8 screws and unplug 4 wires to remove Power Module.
PowerModule
ConnectorBoard

H772-6
4. Unscrew 4 screws to remove Lamp Housing Holder.
LampHousingHolder
5. Removethe powerpanel
6. Unscrew 3 screws to remove I/O Bracket Module.

H772-7
1. Unscrew 4 screws to remove Fan Module(92x25mm).
2. Remove Ballast Module,thenseparate Lamp BallastandPower Bracket.
LampBallast
Power Bracket
3. Unscrew 2 screws to remove Power Board from Power Bracket.
2-4 Removing Fan Module(92x25mm), Lamp Ballast ,
Power Board and DMD Board

H772-8
4. Unscrew 4 screws to removeDMDHeatsink.
5. Unscrew 4 screws to removeDMDBoard and unplug the cable of Color Wheel.
6. Unscrew 3screws toremoveFormatter BoardShielding.

H772-9
1. Unscrew 3 screws to removeDMDChip.
2. Unscrew 3 screws to remove Front Panel Module.
FrontPanelModule
3. Unscrew 3 screws to remove Fan Module(50x15mm).
2-5 Removing DMD Chip, Front Panel Module and
Fan Module(50x15mm)

H772-10
2. Unscrew allscrews to removeEngine Module.
3. Turn over and then unscrew 4 screws to remove Engine Base Plate and Fan Module
(59x25mm).
EngineBasePlate FanModule(59x25mm)
1. Unscrew all screwsto removeAirDuct Module.
2-6 Removing Air Duct Module, Engine Module and
Fan Module