LCD Repair Tips

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 1300 605 808

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.

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Diamond View LCD Monitor DV172 / DV172B (B = Black Cosmetic’s)

Manual Contents Section 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 2.1 POWER SUPPLY......................................................................................................................................3 2.2 SIGNAL INTERFACE ...............................................................................................................................3 2.3 VIDEO PERFORMANCE ...........................................................................................................................5 2.4 SCAN RANGE .........................................................................................................................................5 2.5 PLUG & PLAY DDC2B SUPPORT ..........................................................................................................5 2.6 SUPPORT TIMINGS .................................................................................................................................5 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 4.1 THE PHYSICAL DEFINITION & TECHNOLOGY SUMMARY OF LCD PANEL ...............................................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 6.2 WEIGHT ................................................................................................................................................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 TN with Film type Panel display size Panel display resolution

Luminance AC power input DC power input(with AC power adapter) DPMS supported LED indicator for power status showed OSD for control & information supported Multi-language supported for OSD

AUO M170EN05 17.0" SXGA(1280x1024) +/- 70 degrees Horizontal (typ.) +/- 70 degrees Vertical (typ.) +/- 60 degrees Horizontal (min.) +/- 60 degrees Vertical (min.) Yes Yes No 1280 x 1024 at 75Hz 262144 (with dithering) 250:1 (min.), 500:1 (typ.) 200 cd/m2 (min.), 260 cd/m2 (typ.) Yes No Yes Yes Yes Yes

Buttons control supported Flywheel control supported 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 Microphone function supported Mechanical Tilt base design VESA wall mounting design Mechanical Rotate design Mechanical Lift base design

Yes No Yes Yes Yes Yes Yes No No Yes Yes No No

Panel supplier & Panel type of supplier Actual Size Diagonal display Actual Resolution display

Viewing Angle (at Contrast Ratio ≧ 10) Analog interface with Scaling supported DVI interface with Scaling supported Video interface with Scaling supported Max resolution mode supported Number of Display Colors supported Contrast Ratio

Panel spec With 15 pin D-sub connector With 24 pin DVI connector. N.A. Panel driver is 6 bit At R,G,B saturated condition (Default “User” color setting) 90-264 Volts, 47-63 Hz. N.A. < 3 watts Green/Amber/Non 6 languages 6 buttons including 1 monitor power on/off control button. N.A. Genesis gm5120 “Auto” key function DDC2B only

N.A. N.A. From 0 to +20 degree N.A. N.A.

2

DV172 LCD Monitor Service Guide Engineering Specification 2. Electrical Characteristics 2.1 Power supply Item 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

Condition

Spec

Universal input full range 90 ~ 264VAC Normal “On” operation DPMS “Off” state 110 VAC 220 VAC 264 VAC/50Hz 1. 1500VAC, 1 sec 2. Ground test: 30A, 1sec IEC1000-4-4

90~264VAC /47~63Hz < 2.0 Arms < 50 Watts < 3 Watts < 30 A (peak) < 60 A (peak) < 3.5 mA Without damage < 0.1 ohm 1KV

IEC1000-4-5 (Surge) 90 ~ 264VAC

Common: 2KV, Differential: 1KV 6mA ~ 15mA

90 ~ 264VAC

40KHz ~ 80KHz Color: White or Black Length: 1800 +/- 20 mm

OK N.A √ √ √ √ √ √ √

Remark

LED: Green LED: Amber Cold-start

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

√ √ √ √

Each connector

√

Depends on shipping requirement (99 level)

2.2 Signal interface Item Signal Cable Pin assignment Video input

Sync input

Condition

Spec

15 pin D-Sub 15 pin D-sub connector

Color: White or Black Length: 1600 +/- 20 mm See Note-1

24 pin DVI connector

See Note-2

Signal type-1

Separate analog R,G,B signals

Level(R,G,B signals)

700 mV (peak to peak)

Impedance(R,G,B signals)

75 Ohms +/- 1.5 Ohms

Signal type-2

TMDS signals

Single-ended input swing voltage (V-swing) Impedance(TMDS signals)

200mV≤V-swing≤780mV

Signal type

100 Ohms +/- 10 Ohms Separate H/V-sync Composite H/V-sync (Positive/Negative) Logic High: 2.4V ~ 5.5V Logic Low: 0V ~ 0.5V (TTL level)

Level Impedance

Minimum 2.2KΩ(pull down)

Sync Pulse Width (SPW)

0.7μs < H-SPW 1H < V-SPW

OK N.A

√ √ √ √ √ √ √ √ √ √

Remark Depends on shipping 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

Note-1: The pin assignment of 15 pin D-sub connector: 5

1

10

6

15

11

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DV172 LCD Monitor Service Guide Engineering Specification

Pin 1 2 3 4 5 6 7 8

Signal Assignment Red video Green video Blue video Ground Ground Red Ground Green Ground Blue Ground

Pin 9 10 11 12 13 14 15

Signal Assignment PC5V (+5 volt power) Sync Ground Ground SDA H-Sync (or H+V) V-sync SCL

Note-2: The pin assignment of 24 pins DVI connector: (C1 ~ C5 are NC) 3

8

2

9

10 11 12 13 14 15 16

4

5

7

1

6

17 18 19 20 21 22 23 24

Pin 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Signal Assignment TMDS RX2TMDS RX2+ TMDS Ground Floating Floating DDC Clock DDC Data Floating TMDS RX1TMDS RX1+ TMDS Ground Floating Floating +5V Power Ground

Pin 16 17 18 19 20 21 22 23 24 C1 C2 C3 C4 C5

C1

C2 C5

C3

C4

Signal Assignment Hot Plug Detect TMDS RX0TMDS RX0+ TMDS Ground Floating Floating TMDS Ground TMDS Clock+ TMDS ClockFloating (NC) Floating (NC) Floating (NC) Floating (NC) Floating (NC)

4

DV172 LCD Monitor Service Guide Engineering Specification 2.3 Video performance Item Max. support Pixel rate Max. Resolution Rise time + Fall time

Condition

Spec

OK N.A

135 MHz 1280 x 1024 < 3.7 ns (50% of minimum pixel clock period) < 5% final full-scale value

Settling Time after overshoot /undershoot Overshoot/Undershoot

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

√ √ √

Remark

1280x1024 @ 75Hz (max. support timing) Refer to VESA VSIS Standard V1R1 Refer to VESA VSIS Standard V1R1

√ √

2.4 Scan range Item

Condition

Spec

OK N.A

31 ~ 81KHz

Horizontal Vertical

56 ~ 75 Hz

√ √

Remark Without Frame buffer

2.5 Plug & Play DDC2B Support Item

Condition

Spec

DDC channel type

OK N.A

DDC2B

EDID

Version 1.3

√ √

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

2.6 Support Timings Actual Output

Input Timing

640x350

Horizontal Frequency (KHz) 31.47(P)

Vertical Frequency (Hz) 70.08(N)

Dot Clock Frequency (MHz) 25.17

Actual display Resolution 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

Resolution

OK N.A

√ √ √ √ √ √ √ √ √ √ √ √ √

Remark DOS DOS DOS Macintosh VESA VESA VESA VESA VESA Macintosh VESA VESA VESA

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DV172 LCD Monitor Service Guide Engineering Specification

1024X768

Horizontal Frequency (KHz) 60.24(N)

Vertical Frequency (Hz) 74.93(N)

Dot Clock Frequency (MHz) 80.00

Actual Output Actual display Resolution 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

Input Timing Resolution

OK N.A

√ √ √ √ √ √ √ √ √

Remark Macintosh VESA Macintosh SUN 66 SUN VESA IBM1 VESA SPARC2

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

3. Operational & Functional Specification 3.1 Video performance Item Resolution Contrast ratio Brightness Response time Viewing angle

Condition

Spec

Any input resolution modes which are under 1280x1024

1280 x1024

√

250:1(min.), 500:1 (typ.) 200 cd/m2(min.) 260 cd/m2(typ.) 16 ms(typ.), 25ms(max.)

√ √

At R,G,B saturated condition (Default “User” color setting) Rising + Falling time At Contrast ratio ≧ 10 At Contrast ratio ≧ 10

CIE coordinate of White Display colors

R/L: 60 degrees (min.) 70 degrees (typ.) U/D: 60 degrees (min.) 70 degrees (typ.) (0.31, 0.33) +/- (0.03, 0.03) 262144 color with dithering

OK N.A

Remark

√ √ √ √ √

18 bits with dithering

3.2 Brightness Adjustable Range Item Brightness adjustable range

Condition At Max. Contrast level & Full-white color pattern

Spec (Max. brightness value – Min. brightness value) ≧ 40 cd/㎡

OK N.A

Remark

√

3.3 Acoustical Noise Item Acoustical Noise

Condition

Spec

At 1 meter distance & “Audio” function disabled

≦ 40 dB/A

OK N.A

Remark

√

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DV172 LCD Monitor Service Guide Engineering Specification 3.4 Audio performance Item 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

Condition

Spec

OK N.A

√ √ √

1 Wrms/CH @ 1KHz