Acer H233H User manual

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Product Service Manual – H233H
Service Manual for acer: H233H
P/N : 9J.0W116.H1S
Applicable for All Regions
Version : 002
Date : 2009/05/18
Notice:
- For RO to input specific “Legal Requirement” in specific NS regarding to responsibility and liabilit
y
statements.
First Edition (May, 2009)
© Copyright Acer Corporation 2009. All Right Reserved.

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Content Index
Abbreviations & Acronyms..............................................................................3
1. About This Manual........................................................................................3
1.1 Trademark......................................................................................................... 3
2. Introduction...................................................................................................4
2.1 RoHS (2002/95/EC) Requirements .................................................................. 4
2.2 Safety Notice .................................................................................................... 4
2.3 Compliance Statement..................................................................................... 4
2.4 General Descriptions....................................................................................... 4
3. Product Overview .........................................................................................5
3.1 Introduction ...................................................................................................... 5
3.2 Operational Specification................................................................................ 6
3.3 Operational & Functional Specification ....................................................... 12
3.4 LCD Characteristics....................................................................................... 15
3.5 User Controls ................................................................................................. 18
3.6 Mechanical Characteristics........................................................................... 19
3.7 Pallet & Shipment........................................................................................... 20
3.8 Certification.................................................................................................... 21
3.9 Packing ........................................................................................................... 22
4. Disassembly /Assembly.............................................................................23
4.1 Exploded View................................................................................................ 23
4.2 Disassembly /Assembly ................................................................................ 25
5. Level 1 Cosmetic / Appearance / Alignment Service...............................35
5.1 Alignment procedure (for function adjustment).......................................... 35
5.2 Software / Firmware Upgrade Process......................................................... 39
5.3 EDID Upgrade Procedure .............................................................................. 44
5.4 OSD Operation Guide .................................................................................... 47
6. Level 2 Circuit Board and Standard Parts Replacement.........................53
6.1 Trouble Shooting Guide................................................................................. 53
6.2 Circuit Operation Theory............................................................................... 57
6.3 Spare Parts List.............................................................................................. 61
Appendix 1 – Screw List / Torque..................................................................66
Appendix 2 – Physical Dimension Front View and Side view.....................68
Appendix 3 – Interface Board........................................................................70

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Abbreviations & Acronyms
1. About This Manual
This manual contains information about maintenance and service of acer products.
Use this manual to perform diagnostics tests, troubleshoot problems, and align the
acer product.
1.1 Trademark
The following terms are trademarks of Acer Inc. :
Acer
Importance
Only trained service personnel who are familiar with this Acer Product
shall perform service or maintenance to it. Before performing any
maintenance or service, the engineer MUST read the “Safety Note”.

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2. Introduction
This section contains general service information, please read through carefully. It should be
stored for easy access place for quick reference.
2.1 RoHS (2002/95/EC) Requirements
– Applied to all countries require RoHS.
The RoHS (Restriction of Hazardous Substance in Electrical and Electronic Equipment Directive)
is a legal requirement by EU (European Union) for the global electronics industry which sold in EU
and some counties also require this requirement. Any electrical and electronics products
launched in the market after June 2006 should meet this RoHS requirements. Products launched
in the market before June 2006 are not required to compliant with RoHS parts. If the original
parts are not RoHS complaints, the replacement parts can be non ROHS complaints, but if the
original parts are RoHS compliant, the replacement parts MUST be RoHS complaints.
If the product service or maintenance require replacing any parts, please confirming the RoHS
requirement before replace them.
2.2 Safety Notice
1. Make sure your working environment is dry and clean, and meets all government safety
requirements.
2. Ensure that other persons are safe while you are servicing the product.
DO NOT perform any action that may cause a hazard to the customer or make the product
unsafe.
3. Use proper safety devices to ensure your personal safety.
4. Always use approved tools and test equipment for servicing.
5. Never assume the product’s power is disconnected from the mains power supply. Check that
it is disconnected before opening the product’s cabinet.
6. Modules containing electrical components are sensitive to electrostatic discharge (ESD).
Follow ESD safety procedures while handling these parts.
7. Some products contain more than one battery. Do not disassemble any battery, or expose it to
high temperatures such as throwing into fire, or it may explode.
8. Refer to government requirements for battery recycling or disposal.
2.3 Compliance Statement
Caution: This Optical Storage Product contains a Laser device. Refer to the product specifications
and your local Laser Safety Compliance Requirements.
2.4 General Descriptions
This Service Manual contains general information. There are 3 levels of service:
Level 1: Cosmetic / Appearance / Alignment Service
Level 2: Circuit Board or Standard Parts Replacement
Level 3: Component Repair to Circuit Boards

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3. Product Overview
3.1 Introduction
H233H is defined as our new 23”W model in ACER H series which will be the ACER project in
Qisda. H233H is defined as 23”W LCD Monitor supports 1920(H) x 1080(V) resolution with DPMS
(Display Power Management System) and ACER eColor function. There are triple input types, D-
sub, DVI, and HDMI. H233H adopts LGD panel LM230WF1-TLA3, SEC panel LTM230HT01.
H233H has included 1.5W+1.5W speaker. H233H also support ACM 80000:1.
The features summary is shown as below,
*All panel spec. in Q201 definition depends on the variance of panel source.
*All spec. of monitor need to warm up at least 1hr.
* To test the “Contrast Ratio” and “Luminance” functions, the color status must be “User
preset” mode.
* 1. “Contrast Ratio”: Set “brightness” at 100, and “contrast” at 50.
* 2. “Luminance”: Set “brightness” at 100, and “contrast” at 100.
Feature items Specifications Remark
Panel supplier & module name LGD LM230WF1-TLA3
SEC LTM230HT01 TN, Normally white
Screen diagonal 23”W 533.2(H) x 312.0(V)
Display Format 1920(H) x 1080 (V)
Panel Displa
y
information
Pixel Pitch
LGD: 0.265 mm x 0.265
mm
SEC: 0.2655 mm x
0.2655 mm per one triad
Viewing Angle (@ Contrast Ratio >=
10)
R/L:160 degrees (typ)
U/D: 160 degrees (typ)
A
nalog interface with Scaling
supported Yes
With 15-pin D-sub
connector
HDMI interface with Scaling supported Yes For 1A1D1H model
Max resolution mode supported 1920 (H) x
1080(V)@60Hz
Number of Display Colors supported 16.7 Millions
Contrast Ratio 1000:1 (typ.),700:1(min)
Test Condition: Se
t
Contrast at 50,
Brightness at 100, Colo
r
at User preset
1. Luminance 300 cd/m2(typ.),250
cd/m2(min)
Test Condition: Se
t
Contrast at 50,
Brightness at 100, Colo
r
at User preset
AC power input Yes 90-264 Volts, 47-63 Hz.
DC power input (with AC powe
r
adapter) No
DPMS supported Yes <2W
LED indicator for power status showed Yes White/Amber
OSD for control & information Yes

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supported
Multi-language supported for OSD Yes EMEA
Non-EMEA
Buttons control supported Yes
7 buttons including 1
monitor power on/of
f
control button.
Flywheel control supported No
Scaling function supported Yes
Auto adjustment function supported Yes “Auto-Key” function
DDC function supported (EDID ver.
1.3) Yes DDC2B
DDC-CI support version 1.1 or later Yes DDC-CI
Audio speakers supported Yes
A
udio Jack (input connector)
supported Yes Line-in connector
Earphone Jack (Output connector)
supported No
Microphone function supported No
Mechanical Tilt base design Yes From -5 to +23 degree
VESA wall mounting design Yes
Mechanical Rotate design No
Mechanical Lift base design No
Kensington compatible lock design Yes
3.2 Operational Specification
3.2.1 Power supply
Item Condition Spec OK N.A Remark
Input Voltage range Universal input full range 90~264VAC /47~63Hz √
Input Current range 90 ~ 264VAC < 2.0 Arms √
Power Consumption Normal “On” operation < 52 W √LED: Blue
DPMS DPMS “Sleep” state < 2 W √LED: Amber
DPMS DPMS “Off” state < 1 W √LED: OFF
Inrush Current 110 VAC
220 VAC < 30 A (peak)
< 60 A (peak) √Cold-start
Earth Leakage Current 264 VAC/50Hz < 3.5 mA √
Hi-Pot
1. 1500VAC, 1 sec
2. Ground test: 30A,
1sec
Without damage
< 0.1 ohm √(on-line test) (in-lab test)
Power Line Transient IEC1000-4-4 1KV √
IEC1000-4-5 (Surge)
Common: 2KV,
Differential: 1KV √
CCFL operation range 90 ~ 264VAC LGD: 3~8mA
SEC : 4~8mA √Depends on panel source
CCFL Frequency 90 ~ 264VAC 40KHz ~ 70KHz √Depends on panel
source
Power cord Color: Black
Length: 1800 +/- 50 mm √

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3.2.2 Signal interface
Item Condition Spec OK N.A Remark
15-pin D-Sub Color: Black
Length: 1800 +/- 30 mm √
Signal Cable
24-pin DVI-D Color: Black
Length: 1800 +/- 50 mm √
15-pin D-sub connector See Note-1 √For 15-pin D-sub
24-pin DVI-D connector See Note-2 √For 24-pin DVI-D
Pin assignment
19-pin HDMI connector See Note-3 √For 19-pin HDMI
Signal type Separate analog R/G/B √For 15-pin D-sub
Level 700 mV (peak to peak) √
Analog input
Impedance 75 Ohms +/- 1.5 Ohms √
Signal type Separate H/V-sync
(Positive/Negative) √For 15-pin D-sub
Level
Logic High: 2.4V ~ 5.5V
Logic Low: 0V ~ 0.5V
(TTL level)
√Refer to VESA VSIS
Standard V1R1
Impedance Minimum 2.2KΩ(pull
down) √10KΩfor application
Sync input
Sync Pulse Width (SPW) 0.7µs < H-SPW
1H < V-SPW √
Level 600mV for each
differential line √
Digital input Impedance 50 Ohm TDR Scan
needed for DVI cable and
interface board
√
Note-1: The pin assignment of 15-pin D-sub connector is as below,
Pin Signal Assignment Pin Signal Assignment
1 Red video 9 PC5V(+5 volt ower)
2 Green video 10 Sync Ground
3 Blue video 11 Ground
4 Ground 12 SDA
5 Cable Detected 13 H-Sync (or H+V)
6 Red Ground 14 V-sync
7 Green Ground 15 SCL
8 Blue Ground

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Note-2: The pin assignment of 24-pin DVI-D connector is as below,
Pin Signal Assignment Pin Signal Assignment
1 TMDS RX2- 13 Floating
2 TMDS RX2+ 14 +5V Power
3 TMDS Ground 15 Ground(Cable Detect)
4 Floating 16 Hot Plug Detect
5 Floating 17 TMDS RX0-
6 DDC Clock 18 TMDS RX0+
7 DDC Data 19 TMDS Ground
8 Floating 20 Floating
9 TMDS RX1- 21 Floating
10 TMDS RX1+ 22 TMDS Ground
11 TMDS Ground 23 TMDS Clock+
12 Floating 24 TMDS Clock-

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Note-3: The pin assignment of 19-pin HDMI connector is as below,
Note：Pin 11 is used as Cable Detect.

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3.2.3 Video performance
Item Condition Spec OK N.A Remark
Max. support Pixel rate 173 MHz √Both for analog and
digital inputs
Max. Resolution 1920 x 1080 √Both for analog and
digital inputs
Rise time + Fall time
< 5 ms
(50% of minimum pixel
clock period)
√1920x1080 @ 60Hz
(max. support timing)
Settling Time after
overshoot /undershoot
< 5% final full-scale value √Refer to VESA VSIS
Standard V1R1
Overshoot/Undershoot
< 12% of step function
voltage level over the full
voltage range
√Refer to VESA VSIS
Standard V1R1
3.2.4 Scan range
Item Condition Spec OK N.A Remark
Horizontal 31-83 KHz √
Vertical 56-76 Hz √HDMI supports 50Hz
3.2.5 Plug & Play DDC2B DDC-CI Support
Item Condition Spec OK N.A Remark
DDC channel type DDC2B √
EDID
Version 1.3 √
Refer to S/W spec.
document to see the
detailed EDID data
definition.
DDC-CI Version 1.1 or Later √Refer to S/W spec