Acer H236HL User manual
A
CER_LCD_H236HL_SM20120924V0
Contents
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.WritingEDIDProcess.......................................................................................................................................................43
8. FRU (Field Replaceable Unit) List.............................................................................................................................50
9. Schematics and Layouts.............................................................................................................................................52
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.
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.
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.
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
Rx
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
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 20C 5C
Humidity 65%20%
Display mode 1920x1080,60Hz,PixelClock：148.5MHZ,allwhite
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)
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
5
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
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 150036mm,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
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
8
F. Flat Panel Connector
Connector
:
CN406
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