Acer PH112 User manual

100% Recycled Paper
Acer PH-112
Service Guide
Service guide files and updates are available
on the CSD web; for more information,
please refer to http://csd.acer.com.tw

Copyright
Copyright © 2003 byAcer Incorporated.All rights reserved.No part of this publication
may be reproduced, transmitted, transcribed, stored in a retrieval system, or translated
into any language or computer language, in any form or by any means, electronic,
mechanical, magnetic, optical, chemical, manual or otherwise, without the prior written
permission ofAcer Incorporated.
Disclaimer
The information in this guide is subject to change without notice.
Acer Incorporated makes no representations or warranties, either expressed or
implied, with respect to the contents here of and specifically disclaims any warranties
of merchantability or fitness for any particular purpose.AnyAcer Incorporated software
described in this manual is sold or licensed “as is”. Should the programs prove defec
tive following their purchase, the buyer (and notAcer Incorporated, its distributor, or its
dealer) assumes the entire cost of all necessary servicing, repair, and any incidental or
consequential damages resulting from any defect in the software.
Acer is a registered trademark ofAcer Corporation.
Intel is a registered trademark of Intel Corporation.
Pentium and Pentium II/III are trademarks of Intel Corporation.
Other brand and product names are trademarks and/or registered trademarks of their respec-
tive holders.

Conventions
The following conventions are used in this manual
segassemneercS.neercsnoraeppatahtsegassemlautcasetoneD
etoN noitamrofnilanoitiddafoseceipdnastibseviG .cipottnerrucehtotdetaler
gninraW morftluserthgimtahtegamadynaotuoystrelA .snoitcacificepsgniodtonrogniod
noituaC elbissopdiovaotserusaemyranoituacerpseviG .smelborperawtfosroerawdrah
tnatropmI ehtottnavelersnoitcacificepsodotuoysdnimeR .serudecorpfotnemhsilpmocca

Preface
Before using this information and the product it supports, please read the following
general information.
1. This ServiceGuide provides you with all technical information relating to the BASIC
CONFIGURATIONdecided forAcer’s “global” product offering. To better fit local
market requirements and enhance product competitiveness, your regional office MAY
have decided to extend the functionality of a machine (e.g. add-on card, modem, or
extra memory capability). These LOCALIZEDFEATURES willNOT be covered
in this generic service guide. In such cases, please contact your regional offices or the
responsible personnel/channel to provide you with further technical details.
2. Please note WHENORDERINGFRU PARTS, that you should check the most up-
to-date information available on your regional web or channel. If, for whatever reason,
apart number change is made, it will not be noted in the printed ServiceGuide. For
ACER-AUTHORIZEDSERVICE PROVIDERS, yourAcer office may have aDIFFER
ENT part number code to those given in the FRU list of this printed ServiceGuide.
You MUST use the list provided by your regionalAcer office to order FRU parts for
repair and service of customer machines.

Chapter 1 System Introduction 1
TechnicalSpecification.......................................................................................................1
LampSpecification.............................................................................................................2
SystemBlockDiagram.......................................................................................................6
OpticsConceptualDrawing................................................................................................7
Chapter 2 Firmware Update 8
SetupTool/Equipment.......................................................................................................8
UpgradingProcedure .........................................................................................................8
Chapter 3 Machine Dissassembly and Replacement 10
GeneralInformation ...........................................................................................................11
DisassembleLampModule...............................................................................................12
Disassemble IO Cover &Top Cover..................................................................................13
Disassemble Speaker & Front Cover ...............................................................................14
DisassembleFrontFan...................................... ...............................................................15
Disassemble Front IR Board & IR Cover...........................................................................16
DisassembleVideo IO .......................................................................................................17
Dissassemble MainBoard................................................................................................18
DisassembleBallast Module& BackIR.............................................................................19
DisassembleOptical Engine..............................................................................................20
DisassembleBackCover.................................................................................................. 21
DisassembleBack IRCover ,ACOutlet...........................................................................22
DisassemblePower Module.............................................................................................23
DisassembleMylar & Ground Plate.................................................................................. 24
Disassemble Heatsink &DMDBoard.............................................................................. 25
DisassembleDMDAssembly &DMD.............................................................................. 26
DisassembleThermal Board............................................................................................ 27
DisassembleOpticalEngineFan...................................................................................... 28
ExplodedOverview............................................................................................................29
Table of Contents

Table of Contents
Chapter 4 Trouble shooting 30
VideoSignaltroubleshooting.............................................................................................31
OperationFunctionTroubleshooting..................................................................................34
PowerSourceTroubleshooting..........................................................................................35
FunctionTestandAlignment...............................................................................................36
EquipmentNeeded...................................................................................................36
TestCondition............................................................................................................36
TestDisplayModesand Patterns.....................................................................................37
Compatible Modes ..................................................................................................37
Function TestDisplay Pattern..................................................................................38
Chapter 5 Connector Information 40
Introduction...........................................................................................................................40
MainBoard.........................................................................................................................40
Power Board.....................................................................................................................46
BallastBoard......................................................................................................................48
Chapter 6 FRU(FieldReplaceable Unit) List 49
FRUList...............................................................................................................................50

1Chapter1
SystemIntroduction
Chapter
1
TechnicalSpecification
Item Description
Display Type Single Chip DLP Projector
Lamp Type 200 W User Replaceable Lamp
Brightness 1600 Lumen
Contrast Ratio 2000 : 1(Full on / off) (Min)
Resolution(Pixels) 854 x 480
Uniformity 90%
Optical Compensation Light Tunnel
Focal Length 20.2 ~ 24.2 mm
Screen Size 27~324 inches Diagonal
Throw Distance 1.2 ~ 12 Meter
Compatibility "Horizontal frequency (31~79KHz" )
"Vertical frequency ( 50~85Hz" )
Operation Humidity 80%
Operation Temperature +5 ~ +35C
Sound Noise 30dB(A)(standard mode)/28db(A) (ECO mode)
Power Requirement 100~240v, 50~60Hz
Dimensions ( W x H x D ) 256 x 198 x 92 mm
Weight 2.3 KG (<4.5 lb)
Certification CE Class B, FCC Class B , VCCI-II , UL , cUL, TUV-GS, C-
tick, PSB, PSE, CB Report, CCC

Chapter1 2
LampSpecification
1.ProductScope
The productisalampsystemconsisting ofashortarcburnerinareflector,and alamp
driver.
Lamptype UHP200W-150W1.0
Drivertype EUC 200V/01 TopValue
2.SYSTEMSPECIFICATIONS
2.1Driverconditions
See driverspecificationsformoreinformation
EUC 200V/01
*If the lampvoltage isbelow35Vcontinued over90s,the drivershutsdown.
** If the lampvoltage reachesover140V,the drivershutsdownimmediately.
2.2Run-up time
Run-up timeto80%ofthe stabilised luminousoutputis<60s.
2.3Ignition
2.3.1Coldignition
The criterion forreliableignition isdefined asamaximumofthree ignition
failureson 30 attemptsperamphowevernone oftheseignition failures
mayoccursubsequently.
During the ignition phaseofthe lamp(run-up-time),no cooling ofthe burner
recommended.Cooling ofthe burnercan lead toignition failure.

3Chapter1
It isknownthatasymmetriccooling afterswitching the lampoff, can lead to
ignition failureinthe nextattemptdue tocondensed mercuryon 1ofthe electrodes.
ThereforePhilipsadvisestobuildinmultipleattempts(max.5forsafetyreasons)to
startthe lamp.Between 2attemptsone hastowait15s.
Philipssuggestsafterasuccessfulstarting attempttokeep the lampburning for
atleast15 minutes.
The cablehasan isolation value of2.5kV
Tolimitvoltage loss ofthe ignition pulse,the mutualcapacityofthe cablesmay
notexceed 40pF.
Toensurethis,Philipsrecommendsto:
Avoidtwisted cables
Nevertiethe cablestogether
Avoidcontacttoconductiveplates,especiallyifthoseareconnected toground
(e.g.viaPE)
If possiblekeep the cablesstraightened having amutualdistance(of1to2cm
between the
Asuitableelectricalenclosureshouldbe provided inthe end-product. Creepage
and clearancedistancestohigh voltage partsand traceshavetobe evaluated in
the end-product. Specialconsideration hastobe given tothe distancesfromearthed
mounting screwstohazardousvoltage traceson the lampdriverPCB.
2.3.2Hotrestrike
Atmax.bulbtemperatureof300 oC+-25oC:98%ignition reliabilityofthe total
numberofswitches.
Atmax.bulbtemperatureof300 oC+-25oC:99.9%ignition reliabilityofthe total
numberofswitches.
Arestrikeofthe systemcan be applied 15 secondsaftershutdown.
Restrikesofthe systemcan be repeated up tomax.5times,ifthe lamphasnot
successfullystarted fromthe firsttime.
Philipssuggestsafterasuccessfulstarting attempttokeep the lampburning forat
least15 minutes.

Chapter1 4
3LAMPSPECIFICATIONS
3.1Dimensions
Reflectortype E19
3Average lamplifeand lumen maintenance
(on test&operationalconditionssee 4.4and basedupon alargesample
population)
Whendrivenat200Won ballasttypeEUC 200V/01 and temperatureconditions
arefulfilled
(AN 2002-002)
>85%500h
>50%2000h According tothe lightspecification table(see paragraph 4.5.2)
Whendrivenat150Won ballasttypeEUC 200V/01 and temperatureconditions
arefulfilled
(AN 2002-002)
>85%500h
>50%2500h According tothe lightspecification table(see paragraph 4.5.2)

5Chapter1
4INSTRUCTIONFORUSE
-Toreplacethe lamp,the powershouldbe switched off.
-The burning position ishorizontal±20°.
-Nevertouchthe burnerorreflectormirrorwithbarehands.If barehandshavetouched
it, itshouldbe cleaned withalintfree towelbeforeinstalling the lamp.
-The lampshouldbe operated on the lampdriverasmentioned inparagraph 1.
-Fastswitching cycleswill reducelamplife(e.g.10minon 10minoff).
-Maxtorque on the side and centreconnector:0.8Nm.
-The screw,whichconnectsthe cablewiththe side connector,maynottouchthe
reflectorsurface.
-The setmakermustdesign alamphousetokeep glass piecesinthe lamphouse.
-Visiblearcinstabilityhastobe suppressed bysetoptics.
5ENVIRONMENTALLAWS
EU
Atend ofservicelife,UHPLampsshouldbe treated aschemicalwaste(inviewof
mercurycontent),and be
disposed ofincompliancewithnationalregulations/law.
USA
Tocomplyinaccordancewiththe LawofVermont, thatobligesthe visiblenotification
on alampincaseit
containsmercury,aHglogo will be added on the reflectorofthe lamp.Besidesthe
reflector,alsolamp
packaging withdestination USA needstonotifythe customerthatthe packaging
containsmercuryadded
products.
Formoreinformation aboutHgmarking,check the websiteofthe LawofVermont.
http://www.anr.state.vt.us/dec/ead/mercury/labeling/manufact.htm

Chapter1 6
SystemBlock Diagram

7Chapter1
Optics-ConceptualDrawing

Chapter 2 8
Upgrading Procedure
Firmware Upgrade
This chapter provides the equipment needed, setup and upgrading procedure for
Firmware upgrade.
Chapter 2
Setup Tool / Equipment
1. Computer
2. USB Cable (see right picture)
3. Power Coard
1. Connect Download Cable to projector
2. Open burning programma (DLP Composer Lite)

9Chapter 2
3. Press Power and Menu button together and connect the power cord into the
projector . Than release these 2 bottoms .
4. Click the Start Download button and then start to burning of program .
5. Completion of Burning than remove Power Cord and Burning Cord .

Chapter3 10
MachineDisassemblyand Replacement
Thissection providesdisassemblyproceduresforPH112 DLPProjector.Beforeyou beginany
oftheseprocedures,be suretoturnoff the power,computersystem,and otherattached devices;
then disconnectthe powercablefromthe electronicallyoutlet. Moreover,when you disassemble
the projector,be suretoputthe screwsinasafeplaceand separatethemaccording togrouping.
ToolNeeded
Chapter
3
Item PHOTO
Long Nose Nipper
Hex Sleeves 5mm
Screw Bit (+) : 107
Screw Bit (+) : 101
Screw Bit (+) : 102

11 Chapter3
GeneralInformation
BeforeYou Begin
Beforeproceeding withthe disassemblyprocedure,makesurethatyou do the following:
1.Turnoff the powertothe systemand all peripherals.
2.Unplug the ACadapterand all powerand signalcablesfromthe system.
3.WearAnti-staticwriststrap.

Chapter3 12
1.Loosen twoscrewsofLampCover
2.RemoveLampCover
3.Loosen twoscrewsofLampModule.
4.Graspthe lamphandleand pull outLampModule
p.sRelated noticeofreplacelampplsrefertothe LampSpecification section .
DisassembleLampModule
Note:Unplug all the cordbeforedisaddembling the Projector.
01635-366*2
01635-366*2
LampCoverAssembly
LampAssembly

13 Chapter3
1.Loosen 4screwsofIOcover.
2.RemoveIOcover
3.Loosen 2screwsofBack Cover
DisassembleIOCover&Top Cover
1.Loosen the 2screwsofTop Cover.
2.Lift up Top Coverdirectly(Becarefulthereisainternalwireconnectwiththe mainboard)
01635-D360-00 *2
01635-B730-00 *2
01635-B730-00 *2
P2038-1550-00
P2035-4510-99
82035-2510-00 *2

Chapter3 14
DisassembleFrontCover
DisassembleSpeaker
01635-362 *2
02591-0014-00
02413-0016-00
1.Loosen the screwsofSpeaker.
2.Lifeup Speaker.
1.Loosen the 2screwsofFrontCover.
2.Lift up FrontCoverdirectly(Becarefultherearethree internalwiresconnectwiththe main
board)
01635-B730-00 *2