Acer B243HL User Manual

Acer Acer –LCD-B243HL

Service Manual

LCD Monitor Acer B243HL

- 0 -

1

Table of Contents

Important Safety Notice ........................................................................................02

01 Product Specification .......................................................................................... 03

02 Flat Panel Specification ......................................................................................21

03 Exploded Diagram ..............................................................................................47

04 Troubleshooting.................................................................................................... 49

05 Spare Parts List ..................................................................................................54

06 Schematics and Layouts ...................................................................................... 58

07 Assembly and Disassembly ................................................................................ 73

Appendix : User’s manual

Copyright

This manual may not, in whole or in part, be copied, Photocopied, reproduced, translated, or converted to any electronic or machine readable form without prior written permission of InnoLux Tech. Corp. Ltd.

Acer B243HL Service Manual

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Acer Acer –LCD-B243HL

Important Safety Notice

1. Safety precautions

This monitor is manufactured and tested on a ground principle that a user’s safety comes first. However, improper used or installation may cause damage to the monitor as well as to the user.

Warning:

z This monitor should be operated only at the correct power sources indicated on the label on the

rear of the monitor. If you’re unsure of the power supply in you residence, consult your local dealer or Power Company.

z Do not try to repair the monitor by yourself, as it contains no user-serviceable parts. This monitor

should only be repaired by a qualified technician.

z Do not remove the monitor cabinet. There are high-voltage parts inside that may cause electric

shock to human bodies.

z Stop using the monitor if the cabinet is damaged. Have it checked by a service technician. z Put your monitor only in a lean, cool, dry environment. If it gets wet, unplug the power cable

immediately and consult your closed dealer.

z Always unplug the monitor before cleaning it. Clean the cabinet with a clean, dry cloth. Apply

non-ammonia based cleaner onto the cloth, not directly onto the class screen.

z Do not place heavy objects on the monitor or power cord.

2. Product safety notice

Many electrical and mechanical parts in this chassis have special safety visual inspections and the protection afforded by them cannot necessarily be obtained by using replacement components rated for higher voltage, wattage, etc. Before replacing any of these components read the parts list in this manual carefully. The use of substitute replacement parts, which do not have the same safety characteristics as specified in the parts list, may create shock, fire, or other hazards.

3. Service notes

z When replacing parts or circuit boards, clamp the lead wires around terminals before soldering.

z Keep wires away from high voltage, high temperature components and sharp edges.

z Keep wires in their original position so as to reduce interference.

z Adjustment of this product please refers to the user’ manual.

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Acer Acer –LCD-B243HL

01 Product Specification

1.

General:

Acer B243HL is designed with LVDS interface and VGA/DVI-D input, it featured with embedded

universal AC power supplies and audio input. It’s a green product and meets all ROHS standard. The

power button and display control buttons are on the front of the monitor. The monitors shall

automatically to display lower resolution video modes into 1920x1080 full screen display. The image

can be adjusted through OSD control. It support HDCP and color management function.

1.1 Main Features

1.1.1 For AUO M240HW01-V0 panel

Maximum resolution : 1920(x3) x 1080 @ 60Hz

Back light system : 2 bar Led

Pixel pitch : 276.75 um (H) x 276.75 um (V)

Display area : 531.36mm (H) x 298.89mm (V)

Brightness : 250cd/m² (TYP.)

Contrast ratio : 1000׃1 (TYP.)

ACM :80000:1 (Max)

Response time (Tr+Tf) : 5ms (TYP. ON/OFF)

Viewing angle : 170° (H)/ 160°(V), (TYP.)

Input interface : Analog (D-sub 15 pin)

Digital Option (DVI-D 24 pin )

Power management : Compatible with VESA DPMS

Plug & Play : VESA DDCCI

OSD language : English, French, Spanish, Italian, Deutsch,

Simplified Chinese, Traditional Chinese, Japanese

(Dutch, Finnish, Russian depend on sale region)

Universal AC power supply

1.1.2 Oth er mai n func tio n fe atu res

z Input interface : VGA/DVI/USB upstream z VGA input : D-Sub z DVI input : DVI-D z USB : Support USB2.0 (optional function)

1.2 Accessories

AC Power Cord : 1.8 m. (Black. Cord type depend on sale region)

VGA cable : 1.8 m. (15 pin D-SUB, black cable with blue male connector)

User manual : English (640Mb CD)

DVI cable (option) : 1.8 m. (18+1 pin, black cable with white connector)

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Acer Acer –LCD-B243HL

USB cable(option) : 1.8m.(4pin, black cable with white connector)

Audio cable(option) : 1.8m.( green cable with white connector)

2.

Operation Specifications

The unit should suffer no visible cosmetic damage and should operate with no degradation in display quality

during exposure to the operating conditions and after exposure to the non-operating conditions, in any

sequence.

2.1 Environmental conditions

Operating Specification

Low Temperature High Temperature +40°C / 20% R.H., 12 hrs. High Humidity +32°C/ 80% R.H., 12 hrs Altitude 12,000 feet at 25°C (hold 3.5 hrs)

Storage

Low Temperature

0°C (Relative Humidity is as low as possible), 12 hrs.

-30°C / humidity not controlled

High temperature &low humidity +65°C/ 10% R.H.

Test Profile

+25°C/ 50%R.H.(2hrs)-> -30°C/ No R.H.(12hrs).-> +41°C/ 90%

R.H.(12hrs)->+65°C/ 10% R.H.(12 Hrs)->+25°C/ 50% R.H.(2hr)

Max. Wet Bulb Temp 39°C Altitude 40,000 feet at -30 °C (hold 1 hr)

Notice:1.Altitude Ramp rate: <= 3,500 feet per minute

2. Packed properly with PE bag, cushion material, carton & seal tape

3. power off when test storage

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2.2 Safety, EMC, Ergonomics and Compatibility Requirements

Items Description

Safety

EMC

Ergonomics

Compatibility

Mana

2.3 Electrostatic Discharge Requirements

ement

Item Condition Spec

Electrostatic

Discharge

UL/c CB TUV/G CCC Other

● ● ● ●

FCC CE CCC VCCI-B

● ● ● ●

TCO TCO03

● ● Windows Windows 2000 Windows Windows

● ● ● ●

Energy Star Power

●

IEC61000-4-2(EN55024)

Contact discharge: 4KV Contact discharge: 8KV ● Air discharge : 8KV Air discharge : 15KV ●

2.4 Reliability

Items Condition Spec Note

Operating condition

MTBF

is 25°C

Stable condition at

LED Life time

25℃

Note1. Operating with fixed driving current.

>15,000 Hours

15,000 Hours(Typ) Note1

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3.

Electrical and Optical Characteristics and Performance

3.1 Main Power Supply

3.1.1 Input characteristics

Items Condition Spec Note

AC Input Voltage range Universal input full range 90~264Vac

AC Input Voltage rating Universal input full range 100~240Vac

AC input frequency range 90~264Vac 47~63Hz

AC input frequency rating 100~240Vac 50~60Hz

100Vac 1.5A(max) AC Input Current

240Vac 0.6A(max)

Inrush Current

AC-DC power Efficiency

115Vac,cold star,25°C 35A (max)

230Vac,cold star,25°C 70A(max)

DC output full loading ≥80%

Note2. Before each test, the buck capacitor need to be discharged. Before each test, it must be 10 minutes at least after the latest test. Hot star not component be damaged.

3.1.2 Output characteristics

Items Condition Spec Note

Ripple and Noise

+25V output <1500mv

+5V output <300mv

Audio 5V output <500mv

USB +5V output <150mv

+25V output <480mv

+5V output <100mv

Audio 5V output <100mv

See Note2

With system See note 3

With dummy Load

USB +5V output <100mv

25V loading:0.1A~0.8A 5V loading:0.75A~3.2A

DC Output Voltage

DC output loading capability

Rise Time

Dynamic load change

Hold-up time

Overshoot

Turn on delay time

Power management See Table-1

Audio 5V: 0A~1A USB 5V: 0A~2A

25v loading:0A 5V loading: 0.1A

Vcc5V/3.2A,

<50mS

AC input: 100V~240V >10mS

<10%

2S

Vcc25V:23.5V~29V Vcc5V: 4.85V~5.35V Audio 5V: 4.5V~5.5V

USB 5V: 4.75V~5.25V

Vcc25V: 23.5V~30V Vcc5V: 4.85V~5.35V

Vcc25V/0.8A Audio 5V: 1A USB 5V: 2A

For system active

For power saving or DC off

Note3: Paralleled a 0.1uF ceramic Cap. And 47uF aluminum Cap. Between the end of DC loading side, Measured band-width=20MHz. Ripple voltage of +25V is less than 1500mv when enter into burst mode.

3.1.3 Protection characteristics

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Acer Acer –LCD-B243HL

Protection Condition Spec

OPP(Over current protection) nominal AC input 60W ( min )

SCP(short circuit protection) with auto-recovery function

OVP(Over voltage protection) Auto recovery <output capacitor voltage

OTP(Over temperature protection) NA

Fuse protection NA

Table-1

Status H-sync V-sync Video Power LED

Power on on on active ≤ 50W Blue

off on blanked < 2W Amber

Power Saving

Power Off -- -- -- < 1W Off

3.2 Backlight Power Supply

on off blanked < 2W Amber

off off blanked < 2W Amber

Panel: M240HW01-V6

Items Specification

Lamp 2 Bar LED

Input Voltage 23.5---29V

Input current

On/Off switch level

Brightness PWM Duty (ACM Off)

Brightness PWM Duty (ACM On)

LED Voltage 42.9Vrms (Typ.), 44.2Vrms(Max)

LED Current

Efficiency

0.6A (Typ.),0.8A (Max.)

3.6V V≧ on 2.0 V (on)≧

-0.3v ≤ V off ≤ 0.8 V (off)

30%~100%

1%~100%

20mA (Type.)

25mA (Max.)

>75%

Note: Other panels please refer to the reference panel specs.

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3.3 Brightness output

The test to verify specifications in this section shall be performed under the following standard conditions

unless otherwise noted.

Temperature : 25 ± 5°C

Test pattern : white

Video Resolution : 1920 x 1080

Video input level : 700 mV ± 2%

Warm-up time : 30 minutes

Set brightness control and also contrast control at maximum, to measure the screen center, the light

output shall BL ≥ 200 cd/m2 .

3.4 White balance

The test standard conditions refer to Sec 3.3. (Brightness and contrast are under default value)

Mode

Cool

Warm

User

9300K 0.283 ± 0.030 0.297 ± 0.030 6500K 0.313 ± 0.030 0.329 ± 0.030

Panel While x Panel While y

Chromaticity Coordinate

x y

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3.5 Brightness uniformity

The test standard conditions refer to Sec 3.3.

)(backlight points nine of luminance Min.

%≥75

)(backlight points nine of luminance Max.

4.

Input / Output Signal Specifications

4.1 AC in

4.1.1 AC Input Voltage: 100~240VAC

4.1.2 AC Input Current: 1.2A @100Vac, 0.6A @240Vac

4.1.3 AC Frequency Range: 50~60Hz

4.2 Audio in

4.2.1 Input impedance ﹕ ≧ 10K ohm

4.2.2 Frequency response range ﹕200Hz ~ 10kHz

4.3 USB in

The USB 2.0 includes 4 pins:

pin1:VBUS; pin2:DM; pin3:DP; pin4:GND

4.4DVI-D in

DVI-D Connector Pin assignment:

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Pin Symbol Pin Symbol

1 TMDS Data 2- 16 Hot Plug Detect 2 TMDS Data 2+ 17 TMDS Data 03 TMDS Data 2/4 shield 18 TMDS Data 0+

4.5 VGA in

4 5 6 DDC Clock 21 7 DDC Data 22 Clock shield 8 Analog Vertical Sync 23 Clock +

9 TMDS Data 1- 24 Clock 10 TMDS Data 1+ 11 TMDS Data 1/3 shield 12 TMDS Data 3- 13 TMDS Data 3+ 14 +5V Power 15 GND

19 TMDS Data 0/5 shield 20

4.5.1 D-sub Connector Pin assignment:

Pin Symbol

10 Sync. Ground 11 N/C 12 DDC SDA 13 H sync 14 V sync 15 DDC SCL

1 Red Video 2 Green Video 3 Blue Video 4 N/C 5 Ground 6 Red Ground 7 Green Ground 8 Blue Ground 9 PC +3.3/+5V

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4.5.2

4.6 Timing table

Signal SPEC:

Items Condition Specification

Analog RGB signal Input impedance =75 Ohm 0.7Vp-p

Sync Input impedance ≧1k Ohm TTL level, Separate H/V-sync(+/-)

H-Sync Frequency 30K~80KHz V-Sync Frequency 55~75Hz

Mode

MAC 640x480@66.66Hz 864x525 35 66.66 30.24 23H

VESA 720x400@70Hz 900x449 31.469 70.087 28.322 23H

SVGA

1024x600@60Hz 1312x622 37.320 60.000 48.964 N/A

XGA

VESA

SXGA 1280x1024@60Hz 1688x1066 63.981 60.020 108.000 2EH~2FH VESA

WXGA

WXGA+ 1440x900@60Hz 1904x931 55.935 59.887 106.500 2AH~2BH

WSXGA+ 1680x1050@60Hz 2240*1089 65.290 59.954 146.250 N/A

UXGA

Resolution

(active dot)

640x480@60Hz 800 x 525 31.469 59.941 25.175 23H

640x480@72Hz 832 x 520 37.861 72.809 31.500 N/A

800x600@56Hz 1024 x 625 35.156 56.250 36.000 23H

800x600@60Hz 1056 x 628 37.879 60.317 40.000 23H

800x600@72Hz 1040 x 666 48.077 72.188 50.000 N/A

1024x768@60Hz 1344x806 48.363 60.004 65.000 24H 1024x768@70Hz 1328x806 56.476 70.069 75.000 24H 1152x864@75Hz 1600x900 67.5 75 108 26H~27H 1280x960@60Hz 1800x1000 60 60 108 N/A

1280x720@60Hz 1650x750 44.955 59.940 74.176 1280x800@60Hz 1680x831 49.702 59.810 83.500 1360x768@60Hz 1792x795 47.712 60.015 85.500

1600x1200@60Hz 2160x1250 75.000 60.000 162.000 N/A

1920x1080@60Hz 2576x1120 67.158 59.963 173.000 2C~2D

1920x1080@60Hz 2200x1125 67.500 60.000 148.500 36H~46H

1920x1080@60Hz 2080x1111 66.587 59.934 138.500

Resolution

(total dot)

Horizontal

Frequency (KHz)

Vertical

Frequency (Hz)

Nominal Pixel

Clock (MHz)

Write in EDID

N/A

28H~29H

N/A

Note: 1. Non-interlace signals only (An interlace signal cannot be display)

2. Please refer to F/W specification for more detail

3. Each frequency of Power Macintosh and Sun Ultra is a reference value

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4.7 Audio output SPEC

Items

Min TYP MAX

Output power (W) 1.6 2.0 2.4

Output impedance (Ω) 3.4 4 4.6 AT 1KHz 1Vrms

Total harmonic distortion plus noise --- --- 10%

Signal to noise ratio (dB) 40 --- ---

PWM frequency (KHz)

200 250 300

Specification

TEST CONDITIONS

THD+N = 10%﹐T 1KHz 1Vrms

Po≦ 2.0W

THD+N≦ 5%

Note: The low pass RC Filter (R=100Ω / C=0.047uF) for Class-D Output Power and THD+N Measurement

4.8 DDC data

EDID File Format : VESA’s EDID Standard Version #3, Revision #0,

EDID Structure : Version #1, Revision #3.

EDID Data Table : See the attached table (for example)

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4.8.1

4.8.2

VGA EDID table

0 1 2 3 4 5 6 7 8 9 A B C D E F

00 FF FF FF FF FF FF 00 04 72 D3 00 40 85 40 85

0

36 12 01 03 08 35 1D 78 EA 60 85 A6 56 4A 9C 25

1

12 50 54 B3 0C 00 71 4F 81 00 95 00 D1 C0 81 80

2

01 01 01 01 01 01 02 3A 80 18 71 38 2D 40 58 2C

3

45 00 13 2A 21 00 00 1A 00 00 00 FC 00 42 32 34

4

33 48 4C 0A 20 20 20 20 20 20 00 00 00 FD 00 37

5

4B 1E 50 12 00 0A 20 20 20 20 20 20 00 00 00 FF

6

00 4C 38 35 34 4C 38 35 34 34 30 31 30 0A 00 CS

7

DVI EDID table

0 1 2 3 4 5 6 7 8 9 A B C D E F

00 FF FF FF FF FF FF 00 04 72 D3 00 40 85 40 85

0

36 12 01 03 80 35 1D 78 EA 60 85 A6 56 4A 9C 25

1

12 50 54 B3 0C 00 71 4F 81 00 95 00 D1 C0 81 80

2

01 01 01 01 01 01 02 3A 80 18 71 38 2D 40 58 2C

3

45 00 13 2A 21 00 00 1A 00 00 00 FC 00 42 32 34

4

33 48 4C 0A 20 20 20 20 20 20 00 00 00 FD 00 37

5

4B 1E 50 12 00 0A 20 20 20 20 20 20 00 00 00 FF

6

00 4C 38 35 34 4C 38 35 34 34 30 31 30 0A 00 CS

7

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5.

Function Specifications

All the tests to verify specifications in this section shall be performed under the following standard

conditions unless otherwise noted. The standard conditions are:

Temperature : 25 ± 5°C

Warm-up time : 30 minutes minimum

Checking display modes : All the specified modes

5.1 Panel general specifications

5.1.1

General specifications

Item Describe

Supplier AUO

Model name M240HW01-V6

Display Area 531.36 × 298.89

Pixel Pitch 276.75(Per one triad) × 276.75

Display Colors: 16.7M colors (RGB 6-bit + Hi_FRC)

Number of Pixel 1920 × 1080

Pixel Arrangement R.G.B. Vertical Stripe

Brightness 250 cd/m

2

(TYP.)

Contrast Ratio 1000 (TYP.)

Viewing Angle 170(Horizontal) / 160(Vertical)

Display Mode Normally White

Frame rate 75

Response Time 5ms (TYP. ON/OFF)

Surface Treatment Anti-Glare, 3H

Lamp 2 Bar LED

Outline Dimension 556.0(W) ×323.2(H) ×9.9(D) (TYP.)

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5.1.2

LCD module defects

LCD module defects check follow to the IIS.

5.2 Keypad Function

5.2.1

Control buttons

[POWER] Power on or power off the monitor

[►], [◄]

[MENU]

[AUTO]

[e Color ]

A. When “Main OSD” displays, press these keys to change the contents of an adjustment

item, or change an adjustment value

B. When “Main OSD” un-displays, press [►] to show “Audio” OSD and increase the

volume, press [◄] to show “Audio” OSD and decrease the volume .

A. When “Main OSD” un-displays, press [MENU] to enter OSD interface. B. When “Main OSD” displays, press [MENU] to perform function of menu icon that is

highlight or enter next level menu.

A. When “Main OSD” un-displays, press [AUTO] to perform auto-adjustment B. When “Main OSD” displays, press [AUTO] to return to previous level menu C. When “Empowering Technology OSD” displays, press [AUTO] to exit the OSD

A. When “Main OSD” un-displays, press [e Color] to show “Empowering Technology OSD”. B. When “Main OSD” displays, press [e Color] to exit the OSD, and to show “Empowering

Technology OSD”

5.2.2

Hot Key Operation

FUNCTION

FACTORY MODE

HOT KEY OPERATION

e Color AUTO MENU ◄ ► POWER

● ON

DESCRIPTION

Press [e], and then press [POWER] for DC power on. OSD menu will be shown with “F” on the left top. Select “F” for entering factory mode.

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5.3 OSD Structure

The On-Screen Display (OSD) shall be an easy to use icon based menu through keypad OSD

buttons or remote control unit. The unit shall leave the factory with all OSD controls set to their default values.

First Second Third Control Range Default Value

e

Brightness

ACER eColor Management

User

mpowering

Technology

Contrast

Brightness

ACM

---

0 ~ 100

Standard mode

User mode

50

Text mode 50

Standard mode 50

Graphics mode 60

Movie mode 56 User mode

77

Text mode 44

Standard mode 77

Graphics mode 97

Movie mode 77

OFF

Image

Position

Color

Language

Focus

Clock

H. Position

V. Position

Warm (6500K)

Cool (9300K)

User

NO-EMEA EMEA

English English

Deutsch Deutsch

Español Español

简体中文

繁體中文

Français Français

Italiano Italiano

Dutch

Russian

---

--- ---

Red

Green

Blue

--- ---

0 ~ 100

Depend on each timing

50 ○1

50

Depend on each timing

80

English

日本語

H. Position

OSD

Input Source (Dual)

V. Position

OSD Timeout

Analog

Digital

Finnish

--- ---

---

0 ~ 100 50

10~ 120 20

--- --- ---

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Wide Mode Full/ Aspect

Full

DDC/CI ON/OFF

Wide Mode Full/ Aspect

(Analg only)

Info

Reset

Exit

DDC/CI ON/OFF

Resolution

H. Freq

V. Freq

Analog/Digital Input

S/N

--- --- --- ---

Notes: (1) Clock default 50 is for Visa timing. Others depend on timing.

(2) Depend on timing & S/N

6. SOP of firmware upgrade (

6.1 Operational condition:

ON Full Input Source

ON

--- --- ---

ETL000….0000(22)

Manufacturer of Scaler is Mstar)

Equipment: PC, ISP card, signal cable and power cable.

ESD requirements: antistatic wrists, antistatic gloves (fingers), and connecting cable

Name of ISP program: ISP_Tool_v3.7.5.exe

Manufacture of FW IC：PMC/SST/MX

6.2 Operational steps:

1. Connection: connect PC to PCBA with signal cable, and then keep AC and DC in open state.

One port of ISP

program card

is connected to

PC print port.

2. Adjust ISP programming

Firstly, double click ISP_Tool_v3.7.5EXEI and open ISP program, then select “Device”, next select

manufacturer model of FW IC, which should be correspondent with that of PCBA FW IC. Double click Figure One.

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