ASUS PA246Q Service manual

Service Manual PA246Q

RESTRICTIONS ON USE OF MATERIALS

:

LCD Monitor Service Manual

Model: PA246Q

V 1.0

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Service Manual PA246Q

Important Safety Notice

Proper service and repair is important to the safe, reliable operation of all ASUS equipment. The service procedures recommended by ASUS and described in this service manual are effective methods of performing service operations. Some of these service operations require the use of tools specially designed for the purpose. The special tools should be used when and as recommended.

It is important to note that this manual contains various CAUTIONS and NOTICES which should be carefully read in order to minimize the risk of personal injury to service personnel. The possibility exists that improper service methods may damage the equipment. It is also important to understand that these CAUTIONS and NOTICES ARE NOT EXHAUSTIVE. ASUS could not possibly know, evaluate and advise the service trade of all conceivable ways in which service might be done or of the possible hazardous consequences of each way. Consequently, ASUS has not undertaken any such broad evaluation. Accordingly, who uses a service procedure or tool which is not recommended by ASUS must first satisfy himself thoroughly that neither his safety nor the safe operation of the equipment will be jeopardized by the service method selected.

FOR PRODUCTS CONTAINING LASER: DANGER- Invisible laser radiation when open.

AVOID DIRECT EXPOSURE TO BEAM. CAUTION- Use of controls or adjustments or performance of procedures other than those specified herein may result in hazardous radiation exposure. CAUTION- The use of optical instruments with this product will increase eye hazard.

TO ENSURE THE CONTINUED RELIABILITY OF THIS PRODUCT, USE ONLY ORIGINAL MANUFACTURER'S REPLACEMENT PARTS, WHICH ARE LISTED WITH THEIR PART NUMBERS IN THE PARTS LIST SECTION OF THIS SERVICE MANUAL

Take care during handling the LCD module with backlight unit

- Must mount the module using mounting holes arranged in four corners.

- Do not press on the panel, edge of the frame strongly or electric shock as this will result in damage to the screen.

- Do not scratch or press on the panel with any sharp objects, such as pencil or pen as this may result in damage to the panel.

- Protect the module from the ESD as it may damage the electronic circuit (C-MOS).

- Make certain that treatment body is grounded through wrist band.

- Do not leave the module in high temperature and in areas of high humidity for a long time.

- Avoid contact with water as it may as hort circuit within the module.

- If the surface of panel became dirty, please wipe it off with a soft material. (Cleaning with a dirty or rough cloth may damage the panel.)

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Service Manual PA246Q

Viewing Angle

Video interface with Scaling supported

AC power input

7 buttons including 1 monitor power on/off

1 Monitor Specifications

1.1 Introduction

This specification describes ASUS PA246Q, a 24” Wide multi-interface (Analog +DVI +HDMI +DisplayPort) color TFT LCD monitor. The display supports up to 1920*1200/60 Hz resolution & refresh rate and 1.07 billion colors (HDMI & DP).The features summary is shown below,

Feature items Specifications Remark

Panel supplier & Panel type of supplier LGD LM240WU4-SLB3 Transmissive mode, normally black

Actual Size Diagonal display 24” Wide (16:10) Panel display size

Actual Resolution display (1920x1200/60Hz) Panel display resolution

178 degrees Horizontal

(at Contrast Ratio ≧ 10)

Color Gamut 102%

Analog interface with Scaling supported Yes With 15 pin D-sub connector

DVI interface with Scaling supported Yes With 24 pin DVI-D connector

(typ.)

178 degrees Vertical (typ.)

Panel spec

HDCP supported Yes

HDMI supported Yes With 19 pin HDMI connector

DisplayPort supported Yes With 20 pin DisplayPort connector

No N.A.

Max resolution mode supported 1920x1200@60Hz

Number of Display Colors supported 1.07 billion colors 8-bit + A-FRC,

Contrast Ratio 1000:1 (typ.)

The monitor would increase the backlight

Dynamic Contrast Ratio 50000:1

1.) LCD panel luminance spec: 400 cd/m2 (typ.) 320 cd/m2 (min.)

Luminance

Yes 100-240Volts, 50/60 Hz.

DC power input (with AC power adapter) No

2.) Monitor’s factory default luminance spec: 270 cd/m2 (typ.) 370 cd/m2 (max.)

when display a dark image. Scenery Mode : under 7 gray scale Theater Mode : under 17 gray scale

1.) Panel luminance spec is measured at saturated R/G/B and CCFL=6~7mA (typ.) condition.

2.) Monitor’s factory default luminance spec is measured at User Mode default color temperature (6500K).

DPMS supported < 1 Watt

LED indicator for power status showed Yes White/Orange/Non

OSD for control & information supported Yes

Multi-language supported for OSD Yes 10 languages

Buttons control supported Yes

Flywheel control supported No

Scaling function supported Yes ST STDP8028(Mars)

control button

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Service Manual PA246Q

Earphone Jack (output connector)

SD / TransFlash Card /

VESA wall mounting design

Auto adjustment function supported Yes

DDC function supported (EDID ver.1.3) Yes DDC2B

DDC-CI support version 1.1 or later Yes DDC-CI

Audio speakers supported No

Audio Jack (input connector) supported No

Yes

supported

Microphone function supported No N.A.

USB 2.0 hub supported Yes 2 USB ports

Press and hold “Splendid-key” for 2 ~ 4

seconds

Supported Media Types :

Memory Stick (MS),

High Speed Memory Stick (HSMS),

Memory Stick PRO (MSPRO),

Memory Stick Duo(w Adapter),

MS Duo Secure Digital (Mini-SD),

Secure Digital Card,

Card reader supported Yes

Mechanical Tilt base design Yes

Yes

Mechanical Rotate design Yes

Mechanical Lift base design Yes

1.2 Dimension

Mini Secure Digital(w Adaptor),

TransFlash(SD, including SDHC),

MultiMediaCard(MMC),

Reduced Size MultiMediaCard(RS-MMC),

NAND Flash,

xD

Card Slots :

Lower Slot (built-in Push Ejection

Mechanism):

SD / MS / MMC/xD – direct insertion

MS Duo / Mini-

RS-MMC – with adapter

Item Condition Spec OK N.A Remark Bezel opening

Monitor without Stand L x W x D mm 558.4*380.8*79 mm Monitor with Stand L x W x D mm 558.4*380.8*235 mm Carton Box (outside) L x W x H mm 683*457*298 mm Tilt, Swivel and Lift range Tilt: -5/+20 degree

520.4 x 326 mm

Swivel: ±60 degree Lift: 100mm

7

√

√ √ √ √

Service Manual PA246Q

1.3 Weight

Item Condition Spec OK N.A Remark Monitor (Net)

Monitor with packing (Gross) 10 kg + 5%

7.3 kg

+/- 4%

√

1.4 Plastic

Item Condition Spec OK N.A Remark Flammability UL 94 HB

Heat deflection To ABS UV stability ABS Delta E < 3.0 Resin

Texture MT-11000

Color DB39A

ABS/HB

75 ℃

GPPC D350 BASF GP-35 CHEIL SD0150 CHIMEI PA757 LG HF380 KINGFA HP-126

MT-11010 MT-11020

√ √ √ √

√

1.5 Carton

Item Condition Spec OK N.A Remark Color

Material BC Flute Compression strength 400 KGF Burst Strength 18 KGF/cm2 Stacked quantity 7 layers

Color box

√ √

√

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Service Manual PA246Q

Any input resolution modes

are under

B saturated

03,

2 Operation Instructions

2.1 Video performance

Item Condition Spec OK N.A Remark

Resolution

Contrast ratio 1000:1(typ.)

Brightness

Response time

Viewing angle

CIE coordinate of White

Display colors 1.07 Billion colors

which 1920x1200

At R、G condition Rise Time

Decay Time Gray to Gray

、

1920 x1200@60Hz

270 cd/m2 (typ.) 370 cd/m2 (max)

6 ms (typ.) 7 ms (typ.) 6 ms (typ.)

R/L 178(Typ.) U/D 178(Typ.)

(0.313, 0.329) +/- (0.

0.03)

√

Only HDMI & DP

√

2.2 Brightness Adjustable Range

Item Condition Spec OK N.A Remark Brightness adjustable range

At Max. Contrast level &

Full-white color pattern

(Max. brightness value –

Min. brightness value)

≧

100 cd/㎡

√

2.3 Acoustical Noise

Item Condition Spec OK N.A Remark Acoustical Noise Front side distance : 30cm

Back side distance : 4cm

Front side < 23 dB Back side < 28 dB

√

2.4 Environment

Item Condition Spec OK N.A Remark Temperature Operating Non-operating

Humidity Operating 10 ~ 90% Non-operating 5 ~ 90% Altitude Operating

Non-operating 0~12,192m (40,000ft)

0 ~ 40 ℃

-20 ~ +60 ℃

0~3,657m (12,000ft)

√ √

√ √ √

√

Non-condensing Non-condensing

Without packing

With packing

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Service Manual PA246Q

2.5 Transportation

Item Condition Spec OK N.A Remark Vibration Unpacked, Non-Operating 20 Hz, 0.0185 g2/Hz

200 Hz, 0.0185 g2/Hz

(Duration: 5 min Per AXIS) Package Test (1)Random Vibration

(2)Drop Package, Non-Operating 91 cm Height

Package, Non-Operating 1Hz, 0.0001 g2/Hz

4 ~100 Hz, 0.0001 g2/Hz

200 Hz, 0.001 g2/Hz

(Equivalent to 1.15 Grms)

(Duration: 30 min Per

surface on Z Axis)

(2 corners, 2 edges, 6

faces)

√

√ √

√

2.6 Electrostatic Discharge Requirements

Item Condition Spec OK N.A Remark Electrostatic Discharge IEC801-2 standard Contact: 8KV

Air: 15KV

√

2.7 Reliability

Item Condition Spec OK N.A Remark

MTBF Prediction

CCFL Life time at 25 °C 2°C

Note: The lifetime of LED is defined as the time when LED packages continue to operate under the conditions at Ta = 25 ±2 and I= (20)mA (per chip) until the brightness becomes _ 50% of its original value.

Refer to Telcordia (Bellcore)

≧

80,000 Hours (goal)

≧

40,000 Hours (SA)

√

Excluding the LCD, CCFL

See Note

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Service Manual PA246Q

2.8 User’s hardware control definition:

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Service Manual PA246Q

2.9 OSD control function definition

Item File Name Graphic Related OSD Comment

1 ButtonTypeC_F_L.png This will be used in those OSD for CI module. (Suggest : Do not change)

2 ButtonTypeC_F_M.png This will be used in those OSD for CI module(Suggest : Do not change)

3 ButtonTypeC_F_R.png This will be used in those OSD for CI module(Suggest : Do not change)

4 ButtonTypeC_N_L.png This will be used in those OSD for CI module(Suggest : Do not change)

5 ButtonTypeC_N_M.png This will be used in those OSD for CI module(Suggest : Do not change)

6 ButtonTypeC_N_R.png This will be used in those OSD for CI module(Suggest : Do not change)

7 grybar_cursor_b_m.png This will be used in those OSD for CI module(Suggest : Do not change)

8 grybar_cursor_f_m.png This will be used in those OSD for CI module(Suggest : Do not change)

9 grybar_cursor_n_m.png This will be used in those OSD for CI module(Suggest : Do not change)

10 shop_mode_img.bmp

volume_MUTE.bmp

11

volume_on.bmp

12 sound_mode_img.bmp

13 menu_info_notice.bmp

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Service Manual PA246Q

menu_info_notice.bmp

14

menu_button.bmp

menu_lock.bmp

menu_lock_hide.bmp

menu_time.bmp

menu_channel.bmp

15

menu_channel_hide.b mp menu_option.bmp

menu_picture.bmp

menu_audio.bmp

volume_ball_blue.bmp volume_ball_gray.bmp volume_ball_purple.bm

16

volume_ball_purple_hid

p

e.bmp

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Service Manual PA246Q

bmp_bubbles.bmp

volume_ball_gray.bmp

volume_ball_gray_hide.

17

bmp

triangle_down.bmp arrow_down_1.bmp arrow_down_2.bmp

arrow_up_1.bmp

arrow_up_2.bmp arrow_left_1.bmp arrow_left_2.bmp

arrow_right_1.bmp arrow_right_2.bmp

ball_yellow_down.bmp

ball_yellow_bg_up.bmp

ball_gen_bg_up.bmp

ball_gen_bg_down.bmp

ball_green_bg_up.bmp ball_green_bg_down.b

18

ball_blue_bg_down.bm

p arrow_down_1.bmp

arrow_left_1.bmp arrow

mp

ball_blue_bg_up.bmp

arrow_down_2.bmp

arrow_up_1.bmp

arrow_up_2.bmp

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Service Manual PA246Q

ball_bg.bmp

manual_scan_icon.bmp

bmp_bubbles2.bmp

ball_blue_bg_up.bmp

ball_blue_bg_down.bm

ball_green_bg_down.b

19

ball_green_bg_up.bmp

ball_red_bg_up.bmp ball_red_bg_down.bmp ball_yellow_bg_up.bmp

ball_yellow_bg_down.b

ball_gen_bg_down.bmp

p

mp

ball_gen_bg_

Red (207, 49, 48) Yellow (254, 203, 92) Green (166, 174, 122) Blue(213, 89, 43)

20

list_Bubble.bmp

list_Bubble_R.bmp

list_bar_M.bmp list_bar_R.bmp

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Service Manual PA246Q

21 list_Bubble_source.bmp

22 list_Bubble_info.bmp

1. Please refer to Item24 for the title bar on the up. 2. Please refer to Item 19 for the bottom of the OSD

* The detailed firmware functions’ specification, please refer to C212 S/W spec. document.

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Service Manual PA246Q

pin DisplayPort

3 Input/Output Specification

3.1 Power supply

Item Condition Spec OK N.A

Input Voltage range Universal input full range 100-240V, 50/60 Hz Input Current range 100 ~ 240VAC < 2 Arms

Normal “On” operation < 130 Watts

Power Consumption

Inrush Current

Earth Leakage Current 264 VAC/50Hz < 3.5 mA

Hi-Pot

Power Line Transient IEC1000-4-4 1KV

IEC1000-4-5 (Surge)

CCFL operation range 90 ~ 264VAC

CCFL Frequency 90 ~ 264VAC

Power cord

DPMS “Sleep” state ≤ 1 W DPMS “Off” state ≤ 1 W AC Power Switch Off 0 W 110 VAC

220 VAC

1. 1500VAC, 3 sec

2. Ground test: 30A, 3sec

< 30 A (peak) < 60 A (peak)

Without damage < 0.1 ohm

Common: 2KV, Differential: 1KV 6mA ~ 7mA (With 100% Duty) 54KHz ~ 58KHz (With 100% Duty) Color: Black Length: 1800mm +/50mm

3.2 Signal interface

√ √

LED: White

√

LED: Orange

√

LED: Off

√

LED: Off

√

Cold-start

√

Panel spec.

√

Panel spec.

√

Remark

(on-line test) (in-lab test)

Item Condition Spec OK N.A Remark

Color: Black

Length: 1800 mm

Color: Black

Length: 1800 mm

Color: Black

Length: 1800 mm

Color: Black

Length: 2000 +/- 50mm

Color: Black

Length: 1800 +/- 30mm

Color: Black

Length: 1800 mm

See Note 4

Separate H/V-sync

(Positive/Negative)

√ with blue connector

√ with white connector

√

√ DP 1.1 protocol

√

√ with green Jack

√ For 20-

For 15 pin D-sub

√

Signal Cable

Pin assignment

Analog

Sync

D-Sub

DVI-D

HDMI

Displayport (DP)

USB 2.0 cable

Audio

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 19-pin HDMI connector See Note 3 √ For 19-pin HDMI

20-

connector

Signal type Separate analog R、G、B √ For 15 pin D-sub Level 700 mV +/- 5% (peak to peak) √ Impedance 75 Ohms +/- 2% Ohms √

Signal type

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Service Manual PA246Q

DDC Clock

TMDS RX0+

Refer to VESA VSIS

Standard V1R1

Digital input

HDMI input

Level

Impedance Minimum 2.2KΩ(pull down) √ 2.2KΩ for application

Level

Impedance

Level 600mV for each differential line √

Impedance

Level 600mV for each differential line √

Logic High: 2.0V ~ 5.5V

Logic Low: 0V ~ 0.8V (TTL level)

600mV for each differential line

100 Ohm TDR Scan needed for

DVI cable and interface board

100 Ohm differential TDR Scan

needed for HDMI cable and

interface board

√

DisplayPort input

Impedance

Note 1: The pin assignment of D-sub , DVI , HDMI , DisplayPort connectors are as below:

15 pins D-sub connector (Female):

Pin Signal Assignment Pin Signal Assignment

1 Red video 9 PC5V (+5 volt power) 2 Green video 10 Sync Ground 3 Blue video 11 Ground 4 Ground 12 SDA 5 Cable-Detect 13 H-Sync (or H+V) 6 Red Ground 14 V-sync 7 Green Ground 15 SCL 8 Blue Ground

Note 2: The pin assignment of 24-pin DVI-D connector (Female) is as below,

100 Ohm differential TDR Scan

needed for DisplayPort cable and

interface board

√

Pin Signal Assignment Pin Signal Assignment

TMDS RX2-

1

TMDS RX2+

2

TMDS Ground

3

TMDS RX4-

4

TMDS RX4+

5 6

18

TMDS RX3+

13

+5V Power

14

Self-test (Cable detect)

15

Hot Plug Detect

16

TMDS RX0-

17 18

Service Manual PA246Q

DDC Data

TMDS Ground

Floating

TMDS RX5

-

TMD

S RX1

-

TMDS RX5+

TMDS RX1+

TMDS Ground

TMDS Clock+

TMDS RX3

-

TMDS Clock

-

7 8

9 10 11 12

Note 3: Type A (Receptacle) HDMI

HDMI Digital connector pin assignments

PIN MNEMONIC SIGNAL

1 TX 2 + TMDS Data 2 + 2 SHLD 2 TMDS Data 2 Shield 3 TX 2 - TMDS Data 2 4 TX 1 + TMDS Data 1 + 5 SHLD 1 TMDS Data 1 Shield 6 TX 1 - TMDS Data 1 7 TX 0 + TMDS Data 0 + 8 SHLD 0 TMDS Data 0 Shield

9 TX 0 - TMDS Data 0 10 TX CLK + TMDS Clock + 11 TX CLK SHLD TMDS Clock Shield 12 TX CLK - TMDS Clock 13 CEC Consumer Electronic Control 14 NC No Connect 15 DDC Clk DDC Clock 16 DDC Data DDC Data 17 GND CED and DDC Ground 18 +5V +5V Power (from the media box) 19 HPD Hot Plug Detect

19 20 21 22 23 24

Note 4: The pin assignment of 20-pin DisplayPort connector is as below,

20-pins DisplayPort female

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Service Manual PA246Q

Ground

Lane3 N

Hot Plug Detect

Return

Lane3 P

DP_PWR

Refer to VESA VSIS

spec document to see

Pin Signal Assignment Pin Signal Assignment

Lane0 P

1

Ground

2

Lane0 N

3

Lane1 P

4

Ground

5

Lane1 N

6

Lane2 P

7

Ground

8

Lane2 N

9

10

11

12

13

14

15

16

17

18

19

20

Ground

EDID WP

AUX_CH P

Ground

AUX_CH N

3.3 Input Video Signal Performance Requirement

Item Condition Spec OK N.A Remark Max. support Pixel rate 193.25 MHz Max. Resolution 1920 x 1200@60Hz Rise time + Fall time (for D-sub input)

Settling Time after overshoot /undershoot

Overshoot/Undershoot

< 2.509 ns

(50% of minimum pixel

clock period)

< 5% final full-scale value

< 12% of step function voltage level over the full voltage range

√ √ √

√

DVI only 165 MHz

1920x1200 @ 60Hz (max. support timing)

Standard V1R1

3.4 Scan range

Item Condition Spec OK N.A Remark Horizontal 31 ~ 83 KHz Vertical 50 ~ 76 Hz

√

Without Frame buffer

√

3.5 Plug & Play DDC2B Support

Item Condition Spec OK N.A Remark DDC channel type DDC2B / DDC-CI

EDID

Version 1.3

Refer to Q212 S/W

√

the detailed DDC-CI command list.

Refer to Rebel Q212

√

S/W spec document to see the detailed EDID data definition.

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