Acer H236HL Bedienungsanleitung

CER_LCD_H236HL_SM20120924V0

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Contents

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Table of Contents

Important Safety Notice.....................................................................................................................................................1

1. Product Specification.....................................................................................................................................................2

2. OSD Menu....................................................................................................................................................................15

3. Exploded Diagram.......................................................................................................................................................20

4. Assembly and Disassembly Procedures..................................................................................................................23

5. Troubleshooting............................................................................................................................................................31

6. Firmware Upgrade Process........................................................................................................................................35

7.WritingEDIDProcess.......................................................................................................................................................43

8. FRU (Field Replaceable Unit) List.............................................................................................................................50

9. Schematics and Layouts.............................................................................................................................................52

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Safety Notice

Any person attempting to service this chassis must familiarize with the chassis and be aware of the necessary safety

precautions to be used when serving electronic equipment containing

high voltage.

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1

Important Safety Notice

Product Announcement:

This product is certificated to meet RoHS Directive and Lead-Free produced definition. Using approved

critical components only is recommended when the situation to replace defective parts. Vender assumes no

liability express or implied, arising out of any unauthorized modification of design or replacing non-RoHS

parts. Service providers assume all liability.

Qualified Repairability:

Proper service and repair is important to the safe, reliable operation of all series products. The service

providers recommended by vender should being aware of notices listed in this service manual in order to

minimize the risk of personal injury when perform service procedures. Furthermore, the possible existed

improper repairing method may damage equipment or products. It is recommended that service engineers

should have repairing knowledge, experience, as well as appropriate product training per new model

before performing the service procedures.

NOTICE:

! To avoid electrical shocks, the products should be connect to an authorized power cord, and turn off the

master power switch each time before removing the AC power cord.

! To prevent the product away from water or explosed in extremely high humility environment.

! To ensure the continued reliability of this product, use only original manufacturer’s specified parts.

! To ensure following safety repairing behavior, put the replaced part on the components side of PWBA,

not solder side.

! To ensure using a proper screwdriver, follow the torque and force listed in assembly and

disassembly procedures to screw and unscrew screws.

! Using Lead-Free solder to well mounted the parts.

! The fusion point of Lead-Free solder requested in the degree of 220°C.

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2

1. Product Specification

1.1 Scope:

LCD LM230WF3-S2E2

LM230WF3-S2E2 is a Color Active Matrix Liquid Crystal Display with an integral Light Emitting Diode (LED)

backlight system. The matrix employs a-Si Thin Film Transistor as the active element. It is a transmissive type

display operating in the normally white mode. It has a 23.0 inch diagonally measured active display area with Full

HD resolution (1080 vertical by 1920 horizontal pixel array) Each pixel is divided into Red, Green and Blue

sub-pixels or dots which are arranged in vertical stripes. Gray scale or the brightness of the sub-pixel color is

determined with

a 8-bit gray scale signal for each dot, thus, presenting a palette of more than 16,7M colors with

Advanced-FRC(Frame Rate Control). It has been designed to apply the interface method that enables low power,

high speed, low EMI. FPD Link or compatible must be used as a LVDS(Low Voltage Differential Signaling) chip. It is

intended to support applications where thin thickness, wide viewing angle, low power are critical factors and graphic

displays are important. In combination with the vertical arrangement of the sub-pixels, the LM230WF3-S2E2

characteristics provide an excellent flat panel display for office automation products such as monitors.

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3

Optical Characteristics

Ta=25 °C, VLCD=5.0V, fV=60Hz, DCLK=72MHz, Is=100mA

Parameter Symbol

Values

Units Notes

Min Typ Max

Contrast Ratio CR 700 1000 - 1

Surface Luminance white LWH 200 250 - cd/m22

Luminance Variation WHITE 75 % 3

Response Time (Gray to Gray) GTG - 14 28 ms 4

Color Coordinates

[CIE1931]

(By PR650)

RED

Typ

-0.03

0.638

Typ

+0.03

Ry 0.334

GREEN

Gx 0.309

Gy 0.627

BLUE

Bx 0.153

By 0.073

WHITE

Wx 0.313

Wy 0.329

Viewing Angle (CR>10)

x axis, right(=0°) r 85 89 Degree 5

x axis, left (=180°) l 85 89

y axis, up (=90°) u 85 89

y axis, down

(=270°) d 85 89

Crosstalk 1.5 % 6

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4

1.2 General Requirements:

1.2.1 Test Condition:

All tests shall be performed under the following conditions, unless otherwise specified.

Warm up time > 30 min.

AC supply voltage 230V± 5%, 50± 3 Hz

Ambient temperature 20C 5C

Humidity 65%20%

Display mode 1920x1080,60Hz,PixelClock：148.5MHZ,allwhite

e-color mode Set to “User” mode

Contrast control Set to The value under user mode, which allows that the

brightest two of 32 linear distributed gray-scales (0～700mv)

can be distinguished.

Color temperature 6500°K

Brightness control The value under user mode

Analog Input signal 700 mVss

Picture position and size Factory preset value,

Viewing angle 90 ° H and V

Viewing distance 40 cm for LCD performance, 20 cm for LCD failures

Ambient illumination Dark room (< 1 cd/m2)

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1.2.2 Test Equipment: CHROMA 6630.

1.3 Electrical:

This section describes the electrical requirement of the monitor. Below is the block diagram.

Led drive

19V

AC-IN

100V-240V

Flat Panel and

LED backlight

Main Board

Video signal, DDC

HOST Computer

Key Board

Adapter

Speaker

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The LCD monitor will contain a main board and a key board which house the flat panel control logic,

brightness control logic and DDC. The adapter will provide AC to DC voltage to drive the main board chips

each voltage. The function key board is used for OSD control, monitor power ON/OFF and the LED indicator

for power status.

LCD Panel

Driving system TFT Color LCD

Pixel pitch 0.0884*RGB(H)mm x 0.2652(V)mm

Contrast Ratio 1000(typ) /700(min)

Response time 14ms (Typ.). 28ms(max)

Luminance of White 250 cd/m2

Input

Separate Sync. H/V TTL

H-Frequency 30kHz-83kHz

V-Frequency 56-75Hz

Viewing angle H:178/ V:178(typ); H:170/ V:170(Min) (CR＞10)

Display mode 1920 x 1080, 60 Hz

EPA ENERGY STAR®

ON Mode < 48W

OFF Mode < 2W

Power Source 100 V ~ 240 V, 50 3Hz, 60 3Hz

Environmental

Considerations

Operating Temp: 0° to 40°C

Storage Temp: -20° to 60°C

Operating Humidity: 15% to 90%

Storage Humidity: 15% to 90%

Operating Altitude: 12,000 feet

Storage Altitude: 40,000 feet

Peak surge current < 55A peak at 240 VAC and cold starting

Power line surge No advance effects (no loss of information or defect) with a maximum of 1 half-wave

missing per second

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6

1.3.1 Interface Connectors:

1.3.1.1 Power Adaptor and Connector:

The AC inlet connector shall be an IEC 320-C13 male power receptacle for connection to mains power. The

power cord shall be gray or black with length of 1.5m + 10cm/-0cm. The power cord type is different from

regions.The adapter output cable length of 150036mm,voltage is 19v and current is 2.1A.

1.3.1.2 Analog Connector and Cable: The analog signal cable shall be Gray or black and 1.5m + 10cm/-0cm.

A. D

SUB

B. DVI

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7

C. HDMI

D. LED backlight Connector

Connector

CN803

Pin No. Symbol Description Notes

1 FB1 Channel1 Current Feed Back

2 FB2 Channel2 Current Feed Back

3 NC No connection

4 NC No connection

5 VLED LED Power Supply

6 VLED LED Power Supply

7 NC No connection

8 NC No connection

9 NC No connection

10 FB3 Channel3 Current Feed Back

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8

F. Flat Panel Connector

Connector

CN406

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