Optoma H79 User manual

ModelName:H79
SERVICEMANUAL
Date Revise Version Description
2005/3/9 V1.0 Initial Issue
Prepared bySI:
________________________________________
Prepared byTSE :Jack
________________________________________
Checkby:
________________________________________
Approved by:
________________________________________
CopyrightMarch,2005 .All RightsReserved
Document#81E-G04-01A.P/N:36.81E03.001

ThismanualisappliedtoH79ProjectorwithdigitalimagingfunctionalitybasedonDigitalMicro-mirror
Device(DMD)technology. It’sthemodeofsinglePanel,250wattPhilipsUHPlamp. Themanualgives
youabriefdescriptionofbasictechnicalinformationtohelpinserviceandmaintainingtheproduct.
Yourcustomerswillappreciatethequickresponsetimewhenyouimmediatelyidentifyproblemsthatoccur
withourproducts. Weexpectyourcustomerswillappreciatetheservicethatyouofferthem.
Thismanualisfortechniciansandpeoplewhohaveanelectronicbackground. Sendtheproductbackto
thedistributorforrepairinganddonotattempttodoanythingthatiscomplexorisnotmentionedinthe
troubleshooting.
NOTICE:
Theinformationfoundinthismanualissubjecttochangewithoutpriornotice.Anysubsequentchanges
madeinthedatahereinwillbeincorporatedinfurtheredition.
Copyright2005,March
AllRightsReserved
ManualVersion1.0
Document# 81E-G04-01A
Preface
H79I

H79II
TableofContents
Chapter1Introduction 1-1
ProductHighlights1-1
ComputerCompatibility1-4
Chapter2DisassemblyProcedure 2-1
ToolsNeeded 2-1
Removing LampModule 2-2
Removing I/O Panel,Top Coverand Keypad Board 2-3
RemovingThermalBoard,MainBoard,
ConnectorBoardand PowerModule 2-5
RemovingBallastModule,FrontCoverand Engine Module 2-7
Removing FanModule92x25mm,DMDChip,Fan Module
50x15mm,FanModule59x25mm,ThermalSensor2-9
RemovingAirDuctModule 2-13
Chapter3Troubleshooting 3-1
EquipmentNeeded 3-1
MainProcedure 3-2
Chapter4Function Testand AlignmentProcedure 4-1
Product4-1
TestEquipment4-1
TestCondition 4-1
TestDisplayModesand Pattern 4-2
InspectionProcedure 4-6
Chapter5FirmwareUpgradeProcedure 5-1
EquipmentNeeded 5-1
Setup Procedure 5-1
FirmwareUpgrade Procedure 5-2
HotKey5-5

Chapter6DDC Key-inProcedure 6-1
EquipmentNeeded 6-1
HardwareSetup Procedure 6-2
EDIDUpgrade Procedure 6-3
AppendixAExplodedOverview7-1
AppendixBSerialNumberSystemDefinition 7-19
Reader’s Response 7-20

H791-1
+D=FJAH
Introduction
1-1 Product Highlights
- One HD2 2.5G 0.79" DMD projection system with 540 ANS lumens.
- Contrast (FOFO) : 2800 : 1 (Typical), 2400:1 (Minimum)
-250 - Watt Philips UHP Lamp. Lamp life 1500 hours, Eco mode 2000 hours
- High efficiency cooling system with system acoustic noise level 32 +/- 2 dB(A) (Normal-mode) / 28
+/- 2 dB (A) (Eco- mode)
- 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
- R remote controller
- No High Altitude Mode function supports in OSD

H791-2
- Weight : < 17.1 lbs. ( 7.8 Kg )
- Cooling System
a. Advanced Air Flow
Three fans with system acoustic noise level : 32dB(A) (Typical)
Temperature control circuits with adaptive voltage control fan speed
b. Max touch temperature follows UL60950 regulation
- Lamp Door Protection : Lamp power supply shuts off automatically when door opens
- Display Panel Specifications
a. T HD2+ DC3 (Dark Chip 3) 0.79 DMD / 12deg / 1280x720
b. Number of active dots : 1280(H) x 720(V)
- Power Supply :
Universal AC 90264V~50-60 Hz with PFC input
250W for Philips UHP Lamp at normal operation
- Power consumption
330W+/-10% (Operating@110V), 3.08A+/-10% (Operating@110V)
13.5W maximum (Stand-by@90V), 25W maximum (Stand-by@264V)
- /O ports
a. DV x 1 (DV ,Analog RBG, Component, HDTV)
b. BNC RBGHV x 1 ( R x 1, G x 1, B x 1, Hsync x 1, Vsync x1)
c. YCbCr x1 (R x 1, G x 1, B x 1)
d. Video input (RCA jack Type X 1)
e. Mini D N 4-pin X 1 (S-video)
f. R x 2 (Front, Rear)
g. RS232 Serial Control x 1 (D-sub)
h. Power Cord x 1
i. 12V Trigger relay x 2
- nput signal spec.
a. Hsync Frequency 31.5 ~ 91.1 kHz
b. Vsync Frequency 43 ~ 85 Hz
c. Video Signal RGB (PC)
Analog RGB 0.7Vp-p, 75 ohm
Analog RGB 1Vp-p, 75 ohm, Sync. Signal
Separate TTL H,V Sync.
Composite TTL Sync.
d. Video
Composite video 1Vp-p,75 ohm
S-video Luminance 0.714Vp-p,75 ohm
S-video Chrominance 0.286Vp-p,75 ohm

H791-3
- nput signal spec.
a. Hsync Frequency 31.5 ~ 91.1 kHz
b. Vsync Frequency 43 ~ 85 Hz
c. Video Signal RGB (PC)
Analog RGB 0.7Vp-p, 75 ohm
- Video Compatibility
a. Standards :
NTSC - M, 4.43 MHz
PAL - B, D, G, H,
SECAM - B, G, H, K, K1, L
HDTV - 480i, 480p, 576i, 576p, 720p, 1080i
b. TV Lines - 500 lines
- Keystone
a. Vertical : +/- 16 degree (Desk-projecter angle)
b. Horizontal : +/- 7 degree (Screen-projecter angle)
- Projection lens : f = 28.3 ~ 38.2mm, F/3.4, 1.35X Manual Zoom Lens.
- Projection mage Size : 30 to 280 Diagonal (Wide)
- Throw Distance : 3.28 ft to 32.80 ft / 1.0m to 10m(Wide).
- Throw Ratio : 1.6~2.16 (Projection Distance/ mage Width)
- Brightness : 540 ANS lumens
- Temperature
a. Operating : 5°C  35°C
Storage: -10°C  60°C
- Maximum Humidity
a. Operating: 5°C  35°C , 80%RH (Max.), non-condensing
Storage: -10°C  60°C , 80%RH (Max.), non-condensing
- Lamp life :
a. 1500 hours min. , 50% survial rate (Normal mode)
2000 hours min. , 50% survial rate (Eco mode)
( Lamp life = normal lamp life+1/2 Eco lamp life )
- Altitude :
a. Operating : 0~2,500 ft 5°C~35°C
2,500~5,000 ft 5°C~30°C
5,000~10,000 ft 5°C~25°C
Storage : 40,000 ft
- MTBF : Operating more than 12,000 hrs (90% confidence level)

H791-4
1-2 Computer Compatibility
Compatibility Resolution V-Sync [Hz] H-Sync [KHz]
VGA 640x4 0 60 31.5
640x4 0 72 37.9
640x4 0 75 37.5
640x4 0 5 43.3
720x400 70 31.5
720x400 5 37.9
SVGA 00x600 56 35.2
00x600 60 37.9
00x600 72 4 .1
00x600 75 46.9
00x600 5 53.7
XGA 1024x76 43.4 35.5
1024x76 60 4 .4
1024x76 70 56.5
1024x76 75 60.0
1024x76 5 6 .7
SXGA 12 0x1024 60 64
12 0x1024 75 0
12 0x1024 5 91.1
UXGA 1600x1200 60 75

a. Analog
b. Digital
Compatibility Resolution V-Sync [Hz] H-Sync [KHz]
VGA 640x4 0 60 31.5
640x4 0 72 37.9
640x4 0 75 37.5
640x4 0 5 43.3
700x400 70 31.5
700x400 5 37.9
SVGA 00x600 56 35.2
00x600 60 37.9
00x600 72 4 .1
00x600 75 46.9
00x600 5 53.7
XGA 1024x76 60 4 .4
1024x76 70 56.5
1024x76 75 60.0


H792-1
Chapter 2
Disassembly Procedure
Tools Needed
Screw Bit (+) : 107
Screw Bit (+) : 102
Hex Sleeves 5mm
Long Nose Nipper
Angle utting Nipper
Ball-end hex-key 3mm

H792-2
2-1 Removing Lamp Module
1. Unscrew one screw to remove the Lamp over.
Note : Be careful that Lamp over has the tenon inside.


2. Loosen 3 screws to remove Lamp Module.
Lamp over
Lamp Module

H792-3
1. Unscrew 4 hex screws to remove I/O Panel.

2. Unscrew 8 hex screws and 3 screws, then unplug one FP cable to remove Top over.
2-2 Removing I/O Panel, Top Cover and Keypad oard
3 screws
I/O Panel

H792-4

3. Unplug one FP cable and unscrew 9 screws to remove Keypad Board, Keypad and Lens
Shift Gear Module.
Keypad Board
Keypad
Lens Shift Gear Module

4. Unscrew 8 screws to remove Shielding Top.
Shielding Top
Holder Bracket

H792-5

1. Unplug 9 connector cables and unscrew 2 screws to remove Thermal Board.
2-3 Removing Thermal oard, Main oard,
Connector oard and Power Module

2. Unscrew 4 screws to remove onnector Board.
Unscrew 9 hex, unplug one connector cable and one FP cable to remove Main Board.

3. Unscrew 8 screws and unplug 3 connector cable to remove Power Module.
Power Module
onnector Board
connector
cable
FP
cable

H792-6

4. Unscrew 4 screws to remove Lamp Housing Holder.
Lamp Housing Holder
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

5. Remove the power panel, then unscrew 2 screws to remove Power Board.
6. Unscrew 3 screws to remove I/O Bracket Module.

I/O Bracket Module
Thermal
Sensor
Board

H792-7
1. Unscrew 4 screws from Ballast and 2 screws from Lamp Housing.
2-4 Removing allast Module, Front Cover and
Engine Module
2. Unscrew 3 screws to remove Top over.




H792-8
3. Unscrew 8 screws to remove Ballast Module and Engine Module.
Ballast Module
Engine Module



H792-9
1. Unscrew 4 screws to remove Fan Module(92x25mm) from Engine Module.
2-5 Disassemble Engine Module
(Removing Fan Module 92x25mm, DMD Chip, Fan Module
50x15mm, Fan Module 59x25mm, Thermal Sensor


2. Unscrew 8 screws and one FP cable to remove DMD Hestsink and Formatter Board.
DMD Hestsink
Formatter Board
one FP cable

H792-10
3. Unscrew 3 screws to remove Formatter Board Shielding.

Formatter Board Shielding
4. Unscrew 3 screws to remove DMD hip.

DMD hip

H792-11
5. Unscrew 2 screws to remove Fan Module (50x15mm).

6. Turn over the Engine Module, then unscrew 2 screws to remove Fan (59x25mm).
Unscrew one screw to remove Thermal Sensor Board.
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

Sensor Board

H792-12
7. Unscrew one screw to remove Thermal Switch.
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
Thermal Switch