Mitsubishi Diamond LCD-DV172 Schematic

Diamond View LCD Monitor

DV172 / DV172B (B=Black Cosmetic)

Service Guide

February 2003

Distributed by

Mitsubishi Electric Australia Pty. Ltd.

A.B.N. 58 001 215 792

348 Victoria Road

RYDALMERE NSW 2116

Australia

Telephone [phone]

Copyright

Copyright ã 1996 by the Company. All rights reserved. No part of this publication may be

reproduced, transmitted, transcribed, stored in a retrieval system, or translated into any language or

computer language, in any form or by any means, electronic, mechanical, magnetic, optical,

chemical, manual or otherwise, without the prior written permission of the Company.

Disclaimer

The Company makes no representations or warranties, either expressed or implied, with respect to

the contents hereof and specifically disclaims any warranties, merchantability or fitness for any

particular purpose. Further, the Company reserves the right to reserve this publication and to make

changes from time to time in the contents hereof without obligation of the Company to notify any

person of such revision or changes.

ii

Section

Diamond View LCD Monitor

DV172 / DV172B

(B = Black Cosmetic’s)

Manual Contents

1. Engineering Specifications

2. Circuit Operation Theory

3. Alignment procedure

4. Trouble Shooting

5. Parts Lists (DV172 & DV172B)

6. Schematic Diagrams

7. Assembly

iii

DV172 LCD Monitor Service Guide

Engineering Specification

Table of Contents

1. INTRODUCTION ...................................................................................................................................2

2. ELECTRICAL CHARACTERISTICS.................................................................................................3

OWER SUPPLY

2.1 P

IGNAL INTERFACE

2.2 S

IDEO PERFORMANCE

2.3 V

2.4 SCAN RANGE.........................................................................................................................................5

2.5 PLUG & PLAY DDC2B SUPPORT ..........................................................................................................5

UPPORT TIMINGS

2.6 S

3. OPERATIONAL & FUNCTIONAL SPECIFICATION.....................................................................6

3.1 VIDEO PERFORMANCE...........................................................................................................................6

3.2 BRIGHTNESS ADJUSTABLE RANGE........................................................................................................6

3.3 ACOUSTICAL NOISE ..............................................................................................................................6

3.4 AUDIO PERFORMANCE ..........................................................................................................................7

4. LCD CHARACTERISTICS...................................................................................................................7

......................................................................................................................................3

...............................................................................................................................3

...........................................................................................................................5

.................................................................................................................................5

4.1 THE PHYSICAL DEFINITION & TECHNOLOGY SUMMARY OF LCD PAN EL ...............................................7

5. USER CONTROLS.................................................................................................................................8

5.1 USER’S HARDWARE CONTROL DEFINITION: ...........................................................................................8

5.2 OSD CONTROL FUNCTION DEFINITION..................................................................................................8

6. MECHANICAL CHARACTERISTICS...............................................................................................9

6.1 DIMENSION ...........................................................................................................................................9

EIGHT

6.2 W

................................................................................................................................................9

6.3 PLASTIC ................................................................................................................................................9

6.4 CARTON ................................................................................................................................................9

7. CERTIFICATION...................................................................................................................................9

APPENDIX: PHYSICAL DIMENSION FRONT VIEW AND SIDE VIEW......................................11

1

DV172 LCD Monitor Service Guide

Engineering Specification

1. Introduction

This specification describes DV172, a 17.0” dual interface color TFT LCD monitor with speakers
supported. The display supports up to 1280x1024/75Hz resolution & refresh rate and 262144 colors with
dithering. The features summary is as below,

Feature items Specifications Remark

Panel supplier & Panel type of supplier AUO M170EN05 TN with Film type
Actual Size Diagonal display 17.0" Panel display size
Actual Resolution display SXGA(1280x1024) Panel display resolution

+/- 70 degrees Horizontal (typ.)

+/- 70 degrees Vertical (typ.)

+/- 60 degrees Horizontal (min.)

Viewing Angle (at Contrast Ratio ≧ 10)

Analog interface with Scaling supported
DVI interface with Scaling supported
Video interface with Scaling supported No N.A.
Max resolution mode supported 1280 x 1024 at 75Hz
Number of Display Colors supported 262144 (with dithering) Panel driver is 6 bit
Contrast Ratio 250:1 (min.), 500:1 (typ.)

Luminance
AC power input
DC power input(with AC power adapter) No N.A.
DPMS supported
LED indicator for power status showed
OSD for control & information supported
Multi-language supported for OSD

Buttons control supported
Flywheel control supported No N.A.
Scaling function supported
Auto adjustment function supported
DDC function supported(EDID ver. 1.3)
Audio speakers supported
Audio Jack(input connector) supported
Earphone Jack(input connector) supported No N.A.
Microphone function supported No N.A.
Mechanical Tilt base design
VESA wall mounting design
Mechanical Rotate design No N.A.
Mechanical Lift base design No N.A.

+/- 60 degrees Vertical (min.) Panel spec

Yes
Yes

200 cd/m2 (min.),

260 cd/m2 (typ.)

Yes

Yes
Yes
Yes
Yes

Yes

Yes
Yes
Yes
Yes
Yes

Yes
Yes

With 15 pin D-sub connector

With 24 pin DVI connector.

At R,G,B saturated condition

(Default “User” color setting)

90-264 Volts, 47-63 Hz.

< 3 watts

Green/Amber/Non

6 languages

6 buttons including 1 monitor
power on/off control button.

Genesis gm5120

“Auto” key function

DDC2B only

From 0 to +20 degree

2

DV172 LCD Monitor Service Guide

2. Electrical Characteristics

2.1 Power supply

Item Condition Spec OK N.A Remark

Input Voltage range
Input Current range
Power Consumption
DPMS
Inrush Current

Earth Leakage Current
Hi-Pot

Power Line Transient

CCFL operation range

CCFL Frequency

Power cord

2.2 Signal interface

Item Condition Spec OK N.A Remark

Signal Cable

Pin assignment

Video input

Sync input

Note-1: The pin assignment of 15 pin D-sub connector:

Universal input full range 90~264VAC /47~63Hz

90 ~ 264VAC < 2.0 Arms

Normal “On” operation < 50 Watts

DPMS “Off” state < 3 Watts

110 VAC
220 VAC

264 VAC/50Hz < 3.5 mA

1. 1500VAC, 1 sec

2. Ground test: 30A, 1sec
IEC1000-4-4 1KV

IEC1000-4-5 (Surge) Common: 2KV,

90 ~ 264VAC 6mA ~ 15mA

90 ~ 264VAC 40KHz ~ 80KHz

Color: White or Black

15 pin D-Sub

15 pin D-sub connector See Note-1

24 pin DVI connector See Note-2

Signal type-1

Level

(R,G,B signals)

Impedance

Single-ended input swing

voltage (V-swing)

Impedance

Sync Pulse Width (SPW)

(R,G,B signals)

Signal type-2 TMDS signals

(TMDS signals)

Signal type Separate H/V-sync

Level Logic High: 2.4V ~ 5.5V

Impedance

Engineering Specification

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

Without damage

< 0.1 ohm

Differential: 1KV

Length: 1800 +/-

Color: White or Black

Length: 1600

Separate analog R,G,B signals

700 mV (peak to peak)

75 Ohms +/- 1.5 Ohms

200mV≤V-swing≤780mV

100 Ohms +/- 10 Ohms

Composite H/V-sync

(Positive/Negative)

Logic Low: 0V ~ 0.5V

Minimum 2.2K

0.7μs < H-SPW
1H < V-SPW

5

10

15

+/-

(TTL level)

Ω(pull down)

1

6

11

20 mm

20 mm

√
√

LED: Green

√

LED: Amber

√

Cold-start

√

√

(on-line test)

√

(in-lab test)

√
√

Each connector

√
√

Depends on shipping

√

requirement (99 level)

Depends on shipping

√

√
√
√
√
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√
√

√

√

√

√
√

requirement (99 level)

For 15 pin D-sub

For 24 pin DVI

For 15 pin D-sub

For 24 pin DVI

For 15 pin D-sub

Refer to VESA VSIS
Standard V1R1

10KΩ for application

3

DV172 LCD Monitor Service Guide

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 Ground 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 pins DVI connector: (C1 ~ C5 are NC)

2345

1
9

10 11

171819

Engineering Specification

8

7

6

12

13

14

21

20

22

C1 C2

16

15
23

C5

C3

24

C4

Pin Signal Assignment Pin Signal Assignment
1 TMDS RX2- 16 Hot Plug Detect
2 TMDS RX2+ 17 TMDS RX0­3 TMDS Ground 18 TMDS RX0+
4 Floating 19 TMDS Ground
5 Floating 20 Floating
6 DDC Clock 21 Floating
7 DDC Data 22 TMDS Ground
8 Floating 23 TMDS Clock+
9 TMDS RX1- 24 TMDS Clock­10 TMDS RX1+ C1 Floating (NC)
11 TMDS Ground C2 Floating (NC)
12 Floating C3 Floating (NC)
13 Floating C4 Floating (NC)
14 +5V Power C5 Floating (NC)
15 Ground

4

DV172 LCD Monitor Service Guide

Engineering Specification

2.3 Video performance

Item Condition Spec OK N.A Remark

Max. support Pixel rate

Max. Resolution

Rise time + Fall time

Settling Time after
overshoot /undershoot
Overshoot/Undershoot

2.4 Scan range

Item Condition Spec OK N.A Remark

Horizontal

Vertical

2.5 Plug & Play DDC2B Support

Item Condition Spec OK N.A Remark

DDC channel type DDC2B

EDID Version 1.3

2.6 Support Timings

Input Timing

Resolution

640x350 31.47(P) 70.08(N) 25.17 1280x943

720x400 31.47(N) 70.08(P) 28.32 1280x1024

640x480 31.47(N) 60.00(N) 25.18 1280x1024

640x480 35.00(N) 67.00(N) 30.24 1280x1024

640x480 37.86(N) 72.80(N) 31.5 1280x1024

640x480 37.50(N) 75.00(N) 31.5 1280x1024

800x600 37.88(P) 60.32(P) 40.00 1280x1024

800x600 48.08(P) 72.19(P) 50.00 1280x1024

800x600 46.86(P) 75.00(P) 49.50 1280x1024

832X624 49.72(N) 74.55(N) 57.29 1280x1024

1024x768 48.36(N) 60.00(N) 65.00 1280x1024

1024x768 56.48(N) 70.10(N) 75.00 1280x1024

1024x768 60.02(P) 75.00(P) 78.75 1280x1024

Horizontal

Frequency (KHz)

135 MHz

1280 x 1024

< 3.7 ns

(50% of minimum pixel
clock period)

< 5% final full-scale value

< 12% of step function

voltage level over the full
voltage range

31 ~ 81KHz

56 ~ 75 Hz

Actual Output

Vertical

Frequency (Hz)

Dot Clock

Frequency (MHz)

Actual display

Resolution

√
√

1280x1024 @ 75Hz

√

√

√

√
√

√
√

(max. support timing)

Refer to VESA VSIS
Standard V1R1

Refer to VESA VSIS
Standard V1R1

Without Frame buffer

Refer to FP767-MEA
DV172 C212 S/W spec
document to see the
detailed EDID data
definition..

Remark

DOS

DOS

DOS

Macintosh

VESA

VESA

VESA

VESA

VESA

Macintosh

VESA

VESA

VESA

OK N.A

√
√
√
√
√
√
√
√
√
√
√
√
√

5

DV172 LCD Monitor Service Guide

Engineering Specification

Input Timing

Resolution

1024X768 60.24(N) 74.93(N) 80.00 1280x1024

1152x864 67.50(P) 75.00(P) 108.00 1280x1024

1152x870 68.68(N) 75.06(N) 100.00 1280x1024

1152x900 61.80(N) 66.00(N) 94.50 1280x1024

1152x900 71.81(N) 76.14(N) 108.00 1280x1024

1280x1024 64.00(P) 60.00(P) 108.00 1280x1024

1280x1024 75.83(N) 71.53(N) 128.00 1280x1024

1280x1024 80.00(P) 75.00(P) 135.00 1280x1024

1280x1024 81.18(N) 76.16(N) 135.09 1280x1024

Horizontal

Frequency (KHz)

Vertical

Frequency (Hz)

Dot Clock

Frequency (MHz)

Note-2: “P”, “N” stands for “Positive”, “Negative” polarity of incoming H-sync/V-sync (input timing)

Actual Output
Actual display

Resolution

OK N.A

√
√
√
√
√
√
√
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√

Remark

Macintosh

VESA

Macintosh

SUN 66

SUN

VESA

IBM1

VESA

SPARC2

3. Operational & Functional Specification

3.1 Video performance

Item Condition Spec OK N.A Remark

Resolution

Contrast ratio

Brightness

Response time

Viewing angle

CIE coordinate of White

Display colors

3.2 Brightness Adjustable Range

Item Condition Spec OK N.A Remark

Brightness adjustable range

3.3 Acoustical Noise

Item Condition Spec OK N.A Remark

Acoustical Noise

Any input resolution modes
which are under 1280x1024

At R,G,B saturated condition
(Default “User” color setting)

Rising + Falling time 16 ms(typ.), 25ms(max.)

At Contrast ratio ≧ 10
At Contrast ratio ≧ 10

At Max. Contrast level &

Full-white color pattern

At 1 meter distance

& “Audio” function disabled

(0.31, 0.33) +/- (0.03, 0.03)

262144 color with dithering

1280 x1024

250:1(min.), 500:1 (typ.)

200 cd/m2(min.)

260 cd/m2(typ.)

R/L: 60 degrees (min.)

70 degrees (typ.)

U/D: 60 degrees (min.)

70 degrees (typ.)

(

Max. brightness value –

Min. brightness value)

≧ 40 cd/㎡

≦ 40 dB/A

√

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√

√

18 bits with

√

√

√

dithering

6

DV172 LCD Monitor Service Guide

3.4 Audio performance

Item Condition Spec OK N.A Remark

Preamp + Power amp

(1)Output power

(2)THD (@ 1W)

(3)S/N ratio

Speaker Driver

(1)Nominal impedance

(2)Maximum input power

(3)Frequency response

(4)Mean sound pressure level

(5)Size

Audio Control

(1)Volume range

(2)Mute

Engineering Specification

1 Wrms/CH @ 1KHz

<10%

40dB

8 ohm

2W/CH

12KHz

83 ± 3 dB

28x 40 mm

0 ~100 levels

On/Off

√
√
√

√
√
√
√
√

√

√

Real output

4. LCD Characteristics

4.1 The Physical definition & Technology summary of LCD panel

Item Condition Spec OK N.A Remark

LCD Supplier

Panel type of Supplier

Screen Diagonal

Display area

Physical Size

Weight

Technology

Pixel pitch

Pixel arrangement

Display mode

Support color

Unit=mm 337.920(H) x 270.336(V)

Unit=mm 358.5(W) x 296.5(H) x 19.0(V)

Unit=gram 1900 (typ.)

TN with Film

Unit=mm 0.264 x 0.264

AUO

M170EN05

432mm(17.0”)

R,G,B vertical stripe

Normally white

262K colors(R,G, B 6-bit data)

√
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√
√
√

Per one triad

7

DV172 LCD Monitor Service Guide

Engineering Specification

5. User Controls

5.1 User’s hardware control definition:

Item Condition Spec OK N.A Remark

Monitor Power button

Enter button

▲/Inc. button

▼/Dec. button

Exit button

Auto button

Mute button

Input source select button

5.2 OSD control function definition

Item Condition Spec OK N.A Remark

Contrast

Brightness

Horizontal Position

Vertical Position

Pixel Clock

Phase

Color Temperature

User

OSD Position

Language

OSD Time

Vo l u m e

Hot key for Contrast

Hot key for Brightness

Hot key for Volume

Auto adjustment

Information

Mute

Input Source select

Recall

OSD Horizontal position

C1: 9300
C2: 6500
C3: 5800

: Separate R,G,B adjustment

OSD Vertical position

6 languages

From 5 sec to 60 sec

Auto-Geometry/Color

For input timing

√
√
√
√
√
√

√
√

See Table 3

√
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√
√

√

√
√
√
√
√
√
√
√

√

√

√

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

8

DV172 LCD Monitor Service Guide

Engineering Specification

6. Mechanical Characteristics

6.1 Dimension

Item Condition Spec OK N.A Remark

Bezel opening

Monitor without Stand

Monitor with Stand

Carton Box (outside)

Tilt and Swivel range

L x W x H mm 382.7x118x402.85 mm

L x W x H mm 382.7x200x404.3 mm

L x W x H mm 495x450x158 mm

Tilt : 0/20 degree

6.2 Weight

Item Condition Spec OK N.A Remark

Monitor (Net)

Monitor with packing

(Gross)

6.3 Plastic

Item Condition Spec OK N.A Remark

Flammability

Heat deflection To

UV stability

Resin

Texture

Color

6.4 Carton

Item Condition Spec OK N.A Remark

Color

Material

Compression strength

Burst Strength

Stacked quantity

340x272.4 mm

Swivel:0 degrees

4.7Kg

6.5Kg

94HB

ABS

ABS Delta E < 8.0

MPR2 : ABS

(VW55/VE0856/D350)

MT-11030

Pearl White

65 ℃

Kraft

B Flute

530 KGF

16 KGF/cm2

13 Layers

Refer to Table 6

√
√
√
√
√

√
√

√
√

MPR2/TCO

√
√

√
√

√
√
√
√
√

7. Certification

Item Condition Spec OK N.A Remark

Environment Green design API Doc. 715-C49

Blue Angel German Standard

E-2000 Switzerland

EPA USA Standard

EN61000-3-2 Harmonics

9

√

√

ISO14000
Requirement

√
√

√

DV172 LCD Monitor Service Guide

Engineering Specification

TCO92/95

TCO99

PC-Monitor Microsoft Windows PC98/99

DPMS VESA

DDC 2B Version 1.3

USB External

Safety UL (USA) UL 1950 3rd edition

CSA (Canada) C22.2 No. 950-M95

FIMKO EN60950

IEC950

EN60950

73/23/EEC

CB

TUV/GS EN60950

CCIB (China)

EIAJ/JEIDA (Japan)

Item Condition Spec OK N.A Remark

NOM (Mexico)

JEON (Korea)

EZU

PSB

EMC CE Mark 89/336/EEC

FCC (USA) Class B

EN55022 Class B

CISPR 22 Class B

VCCI (Japan) Class B

BSMI (Taiwan)

C-Tick (Australia) AS3548

RRL (Korean)

X- Ray Requirement DHHS (21 CFR) USA X- Ray Standard

DNHW

PTB German X- Ray standard

MPRII

MPRIII

Ergonomics ZH1/618 German ergonomic

ISO 9241-3 -7 & 8

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10

DV172 LCD Monitor Service Guide

Engineering Specification

Appendix: Physical Dimension Front View and Side view

382.7

340.0

272.4

357.5

78.

5

250

200

11

DV172 LCD Monitor Service Guide

Circuit Operation Theory

I. Introduction:

DV172 model is a 17” SXGA (1280x1024) 18 bits color TFT LCD monitor with multi-media function.
The features of DV172 are as below,
(a)Dual signal input supported for a 15pins D-sub and a DVI-D input connectors.
(b)It’s compliant with VESA DPMS spec to offer a smart power management and power saving function.
(c)OSD menu supported for users to control the adjustable items and get some information about this monitor.
(d)”Auto” button function supported to offer users an easy method to set all adjustable & controlled items well

by just pressing one button, “Auto”.
(e)VESA DDC2B function supported.
(f)Audio function supported with 2 speakers.

II. Block diagram

DV172 consists of a head and a stand (base). The head consists of a LCD module with 4 lamps, a power
board (include AC-DC, inverter power & audio circuit), a control board and an interface board. The block
diagram is shown as below.

To
backlight

Speaker

TFT-LCD module with 4 CCFL(backlight)

Interface board

Inverter
+
AC-DC board
+
Audio circuit

Audio

AC
socket

AC input

IN

Power sequence
circuit

Scaler Power

Control board

Analog RGB signals

Flash
ROM

EEPROM

DDC
IC

LVDS xtmr

Scaler
(Genesis
gm5120)

D-sub
connector

ADC

TMDS rcvr

DDC
IC

Speaker

DVI-D(TMDS) signals

DVI-D
connector

III. Circuit operation theory for electrical circuits in HEAD of DV172:

A.) Interface board diagram:

1

DV172 LCD Monitor Service Guide

Circuit Operation Theory

Interface Board

RX0

RX1

RX2

RXC

Red

Green

Blue

Vsync

Hsync
(H+V)

SCL

SDA

DSCL

DSDA

A/D
TMDS
MCU
Scaling
OSD

Gm5120

FLASH-

ROM

DDC DDC

EEPROM

To
LCD
module

(a) Circuit operation theory: (The scaling IC used in DV172 is Genesis gm5120)

A basic operation theory for this interface board in Analog input signals processing, the scaling IC
inside A/D converter will convert analog input signals of Red, Green and Blue to 8 bits digital signals of
Red, Green and Blue, and for interface board in DVI-D(TMDS) digital input signals processing, the scaling
IC inside TMDS receiver will convert TMDS signals to 8 bits digital signals of Red, Green and Blue. Then
no matter input signals Analog or DVI-D(TMDS) format are, they have been converted to 8 bits digital Red,
Green and Blue signals, and the scaling IC inside MCU and scaling control circuit will start to do timing
signal detecting and calculating to output the proper LCD panel signals to LCD panel circuit.

The timing signal detecting function in the scaling IC is to detect whether input H-sync, V-sync or
digital pixel clock signals’ status have been changed by host PC system, then it will do short-time picture
blanking, signal processing and converting again if input signals have been changed.

The scaling IC inside OSD circuit will be programmed to an OSD menu which can be showed on the
screen to offer adjustable functions to end-users to control and adjust some picture settings by themselves.

After the scaling IC internal signal processing is done, it will output the digital RGB data, the H-sync,
V-sync, pixel clock and DE(data enable) signal to LVDS transmitter and then to LCD panel driver circuit.

There are two kinds of EEPROM used in interface board, one is 24C02 which is used to store DDC

2