Acer PH-112 User Manual
Acer PH-112
Service Guide
Service guide files a nd updates are availa ble
on the CSD web; for more information,
plea se refer to http://csd.acer .com.tw
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Copyright
Copyright © 2003 by Acer Incorporated. All rights reserved. No part of this publication
may be reproduced, tra nsmitted, tra nscribed, stored in a retrieval syste m, or tra nslated
into any la nguage or computer la nguage, in a ny f orm or by a ny mea ns, ele ctronic,
mechanical, magnetic, optical, che mical, ma nual or otherwise, without the prior written
permission of Acer Incorporated.
Disclaimer
The information in this guide is subject to change without notice.
Acer Incorporated makes no representations or warra nties, e ither expressed or
implied, with respect to the contents here of a nd spe cifically disclai ms a ny warranties
of merchanta bility or fitness f or a ny particular purpose. Any Acer Incorporated software
described in this manual is sold or licensed “as is”. Should the programs prove defec
tive following their purchase, the buyer (a nd not Acer Incorporated, its distributor , or its
dealer) a ssumes the entire cost of all ne cessary servicing, re pair , a nd any incidental or
consequential damages resulting from a ny defect in the software.
Acer is a registered trademark of Acer Corporation.
Intel is a registered trademark of Intel Corporation.
Pentium and Pentium II/III are trade marks of Intel Corporation.
Other brand a nd product n ames are trademark s a nd/or registered trad emarks of the ir respective holders.
Conventions
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Preface
Before using this information and the product it supports, plea se rea d the f ollowing
general information.
1. This Service Guide provide s you with all technical inf ormation relating to the BASIC
CONFIGURA TION decided for Acer’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 ma chine (e.g. add-on card, mode m, or
extra memory ca pa bility). These LOCALIZED FEA TURES will NOT be covered
in this generic service guide. In such ca ses, ple ase contact your region al off ices or the
responsible personnel/cha nnel to provide you with further technical details.
2. Plea se note WHEN OR DERING FRU PARTS, that you should check the most up-
to-date information available on your region al web or channel. If, f or whatever reason,
a part number cha nge is ma de, it will not be noted in the printed Service Guide. For
ACER-AUTHORIZED SERVICE PROVIDERS, your Acer office may have a DIFFER
ENT part number code to those given in the FRU list of this printed Service Guide.
You MUST use the list provided by your regional Acer of fice to order FRU parts f or
repair and service of customer machines.
Chapter 1 Syste m Introduction 1
T echnical Spe cification .......................................................................................................1
La mp Specification............................................................................................................. 2
System Block Diagra m .......................................................................................................6
Optics Conceptual Drawing................................................................................................7
Cha pter 2 Firmware Update 8
Setup T ool / Equi pment.......................................................................................................8
Upgrading Procedure .........................................................................................................8
Chapter 3 M achine Dissa ssembly and Re pla cement 10
General Information ...........................................................................................................11
Disassemble Lamp Module...............................................................................................12
Disassemble IO Cover & Top Cover..................................................................................13
Disassemble Speaker & Front Cover ...............................................................................14
Disassemble Front Fan...................................... ...............................................................15
Disassemble Front IR Board & IR Cover...........................................................................16
Disassemble Video IO .......................................................................................................17
Dissassemble Main Board..... ...........................................................................................18
Disassemble Ballast Module & Back IR.............................................................................19
Disassemble Optical Engine..............................................................................................20
Disassemble Back Cover.................................................................................................. 21
Disassemble Back IR Cover , AC Outlet........................................................................... 22
Disassemble Power Module............................................................................................. 23
Disassemble Mylar & Ground Plate.................................................................................. 24
Disassemble Heatsink & DMD Board.............................................................................. 25
Disassemble DMD Assembly & DMD.............................................................................. 26
Disassemble Thermal Board............................................................................................ 27
Disassemble Optical Engine Fan...................................................................................... 28
Exploded Overview............................................................................................................29
Table of Contents
Table of Contents
Chapter 4 Trouble shooting 30
Video Signal troubleshooting.............................................................................................31
Operation FunctionTroubleshooting............................................................................... ...34
Power SourceTroubleshooting..........................................................................................35
Function T e st and Align ment...............................................................................................36
Equipment Needed...................................................................................................36
T est Condition......................................................................................... ...................36
T est Display Modes a nd Patterns .....................................................................................37
Compatible Modes ..................................................................................................37
Function Test Display Pattern......................................................................... .........38
Chapter 5 Conne ctor Information 40
Introduction...........................................................................................................................40
Main Board......................................................................................................................... 40
Power Board .....................................................................................................................46
Ballast Board ......................................................................................................................48
Chapter 6 FRU(FieldReplaceable Unit) List 49
FRU List...............................................................................................................................50
1 Chapter 1
System Introduction
Chapter
1
Technical Specification
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
Chapter 1 2
Lamp Specification
1.Product Scope
The product is a lamp system consisting of a short arc burner in a reflector, and a lamp
driver.
Lamp type UHP 200W-150W 1.0
Driver type EUC 200V/01 TopValue
2. SYSTEM SPECIFICATIONS
2.1 Driver conditions
See driver specifications for more information
EUC 200V/01
* If the lamp voltage is below 35V continued over 90s, the driver shuts down.
** If the lamp voltage reaches over 140V, the driver shuts down immediately.
2.2 Run-up time
Run-up time to 80% of the stabilised luminous output is < 60s.
2.3 Ignition
2.3.1 Cold ignition
The criterion for reliable ignition is defined as a maximum of three ignition
failures on 30 attempts per amp however none of these ignition failures
may occur subsequently.
During the ignition phase of the lamp (run-up-time), no cooling of the burner
recommended. Cooling of the burner can lead to ignition failure.
3 Chapter 1
It is known that asymmetric cooling after switching the lamp off, can lead to
ignition failure in the next attempt due to condensed mercury on 1 of the electrodes.
Therefore Philips advises to build in multiple attempts (max. 5 for safety reasons) to
start the lamp. Between 2 attempts one has to wait 15s.
Philips suggests after a successful starting attempt to keep the lamp burning for
at least 15 minutes.
The cable has an isolation value of 2.5kV
To limit voltage loss of the ignition pulse, the mutual capacity of the cables may
not exceed 40pF.
To ensure this, Philips recommends to:
Avoid twisted cables
Never tie the cables together
Avoid contact to conductive plates, especially if those are connected to ground
(e.g. via PE)
If possible keep the cables straightened having a mutual distance (of 1 to 2 cm
between the
A suitable electrical enclosure should be provided in the end-product. Creepage
and clearance distances to high voltage parts and traces have to be evaluated in
the end-product. Special consideration has to be given to the distances from earthed
mounting screws to hazardous voltage traces on the lamp driver PCB.
2.3.2 Hot restrike
At max. bulb temperature of 300 oC+ -25oC : 98% ignition reliability of the total
number of switches.
At max. bulb temperature of 300 oC+ -25oC : 99.9% ignition reliability of the total
number of switches.
A restrike of the system can be applied 15 seconds after shut down.
Restrikes of the system can be repeated up to max. 5 times, if the lamp has not
successfully started from the first time.
Philips suggests after a successful starting attempt to keep the lamp burning for at
least 15 minutes.
Chapter 1 4
3 LAMP SPECIFICATIONS
3.1 Dimensions
Reflector type E19
3 Average lamp life and lumen maintenance
(on test & operational conditions see 4.4 and based upon a large sample
population)
When driven at 200W on ballast type EUC 200V/01 and temperature conditions
are fulfilled
(AN 2002-002)
> 85% 500h
> 50% 2000h According to the light specification table (see paragraph 4.5.2)
When driven at 150W on ballast type EUC 200V/01 and temperature conditions
are fulfilled
(AN 2002-002)
> 85% 500h
> 50% 2500h According to the light specification table (see paragraph 4.5.2)
5 Chapter 1
4 INSTRUCTION FOR USE
- To replace the lamp, the power should be switched off.
- The burning position is horizontal ± 20°.
- Never touch the burner or reflector mirror with bare hands. If bare hands have touched
it, it should be cleaned with a lint free towel before installing the lamp.
- The lamp should be operated on the lamp driver as mentioned in paragraph 1.
- Fast switching cycles will reduce lamp life (e.g. 10min on 10min off).
- Max torque on the side and centre connector: 0.8Nm.
- The screw, which connects the cable with the side connector, may not touch the
reflector surface.
- The set maker must design a lamp house to keep glass pieces in the lamp house.
- Visible arc instability has to be suppressed by set optics.
5 ENVIRONMENTAL LAWS
EU
At end of service life, UHP Lamps should be treated as chemical waste (in view of
mercury content), and be
disposed of in compliance with national regulations/law.
USA
To comply in accordance with the Law of Vermont, that obliges the visible notification
on a lamp in case it
contains mercury, a Hg logo will be added on the reflector of the lamp. Besides the
reflector, also lamp
packaging with destination USA needs to notify the customer that the packaging
contains mercury added
products.
For more information about Hg marking, check the website of the Law of Vermont.
http://www.anr.state.vt.us/dec/ead/mercury/labeling/manufact.htm
Chapter 1 6
System Block Diagram
7 Chapter 1
Optics-Con ceptual Drawing
Chapter 2 8
Upgrading Procedure
Firmware Upgrade
This cha pter provide s 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 Ca ble to proje ctor
2. Open burning programma (DLP Composer Lite)
9 Cha pter 2
3. Pre ss Power a nd Menu button together a nd connect the power cord into the
projector . Tha n release these 2 bottoms .
4. Click the Start Download button and then start to burning of progra m .
5. Completion of Burning tha n remove Power Cord and Burning Cord .
Chapter 3 10
Machine Disassembly and Replacement
This section provides disassembly procedures for PH112 DLP Projector. Before you begin any
of these procedures, be sure to turn off the power, computer system, and other attached devices;
then disconnect the power cable from the electronically outlet. Moreover, when you disassemble
the projector, be sure to put the screws in a safe place and separate them according to grouping.
Tool Needed
Chapter
3
Item PHOTO
Long Nose Nipper
Hex Sleeves 5mm
Screw Bit (+) : 107
Screw Bit (+) : 101
Screw Bit (+) : 102
11 Chapter 3
General Information
Before Yo u Begin
Before proceeding with the disassembly procedure, make sure that you do the following:
1. Turn off the power to the system and all peripherals.
2. Unplug the AC adapter and all power and signal cables from the system.
3. Wear Anti-static wrist strap.
Chapter 3 12
1. Loosen two screws of Lamp Cover
2. Remove Lamp Cover
3. Loosen two screws of Lamp Module .
4. Grasp the lamp handle and pull out Lamp Module
p.s Related notice of replace lamp pls refer to the Lamp Specification section .
Disassemble Lamp Module
Note:Unplug all the cord before disaddembling the Projector.
01635-366*2
01635-366*2
Lamp Cover Assembly
Lamp Assembly
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