ViewSonic VP2330WB - 23" LCD Monitor Bedienungsanleitung

ViewSonic VP2330wb-1

Model No. VS10813-1W

23” Color TFT LCD Display

(VP2330wb_SM Rev. 1a Feb. 2006)

ViewSonic 381 Brea Canyon Road, Walnut, California 91789 USA –(800) 888-8583

Service Manual

ViewSonic Corporation Confidential -Do Not Copy VP2330wb

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 ViewSonic

Corporation.

Disclaimer

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

the contents hereof and specifically disclaims any warranty of merchantability or fitness for any

particular purpose. Further, ViewSonic reserves the right to revise this publication and to make

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

person of such revision or changes.

Trademarks

Optiquest is a registered trademark of ViewSonic Corporation.

ViewSonic is a registered trademark of ViewSonic Corporation.

All other trademarks used within this document are the property of their respective owners.

Revision History

Revision

SM Editing Date ECR Number Description of Changes Editor

1a 02/16/2006 Initial Release Jamie Chang

ViewSonic Corporation Confidential -Do Not Copy VP2330wb

TABLE OF CONTENTS

1. Precautions and Safety Notices 1

2. Specification 4

3. Front Panel Function Control Description 9

4. Circuit Description 12

5. Adjustment Procedure 28

6. Troubleshooting Flow Chart 46

7. Recommended Spare Parts List 53

8. Exploded Diagram and Exploded Parts List 56

9. Block Diagram 60

10. Schematic Diagrams 61

11. PCB Layout Diagrams 65

ViewSonic Corporation Confidential -Do Not Copy VP2330wb

1. Precautions and Safety Notices

1. Caution :

No modification of any circuit should be attempted . Service work should only be performed after you are

thoroughly familiar with all of the following safety checks and servicing guide line

2. Safety Check :

Care should be taken while servicing this LCD display. Because of the high voltage used in the inverter circuit.

These voltage are exposed in such areas as the associated transformer circuits .

3. POWER SUPPLY REQUIREMENTS

The external power converter for this display utilizes AC and DC cords , AC cord is detachable , but DC cord is

permanently attached . Any attempt to replace another adapter could result in serious problem on the display .

4. LEAKAGE CURRENT HOT CHECK

4-1 Plug the AC cord directly into the AC outlet. Do not use an isolation transformer during this check.

4-2 Connect a 1500 ohm , 10 watt resistor , paralleled by a 0.15uF capacitor between each metallic part and

a good earth ground

4-3 Use an AC voltmeter with 1000 ohm / volt or more sensitivity and measure the AC voltage across the

combination 1500 ohm resistor and 0.15uF capacitor.

4-4 Move the resistor connection to each exposed metallic part and measure the voltage.

4-5 Reverse the polarity of the AC plug in the AC outlet and repeat the above measurement.

4-6 Voltage measured must not exceed 1.5 volt RMS, from any exposed metallic part to the ground. A

leakage current tester may be used in the above hot check, in which case any circuit measured must not

exceed 1.0 milliamp. In the case of a measurement exceeding the 1.0 milliamp value, a rework is

required to eliminate the chance of a shock hazard .

To Metal Parts

AC VOLTMETER

1500 10W

0.15u

Earth Ground

VP20”/21”/23”W series handling Notice

Correct Method Incorrect method

ViewSonic Corporation Confidential -Do Not Copy VP2330wb

Correct Method Incorrect method

ViewSonic Corporation Confidential -Do Not Copy VP2330wb

2. Specification

GENERAL specification

Test Resolution & Frequency 1920x1200 @ 60Hz

Test Image Size Full Size

Contrast and Brightness Controls Factory Default:

Contrast = 70%, Brightness = 100%

VIDEO INTERFACE

Input Connector (refer the appendix A) D-Sub-1 = DB-15 (Analog)

DVI-A = DVI-I (Analog)

DVI-D = DVI-I (Digital)

Default Input Connector Defaults to the first detected input

Video Cable Strain Relief Equal to twice the weight of the monitor for five

minutes

Video Cable Connector DB-15 Pin out Compliant DDC/CI

Video RGB (Analog)

Separate Sync / Composite Sync / SOG

Video Signals

TMDS (Digital)

Video Impedance 75 Ohms (Analog), 100 Ohms (Digital)

Maximum PC Video Signal 950 mV with no damage to monitor

Maximum Mac Video Signal 1250 mV with no damage to monitor

Sync Signals TTL

DDC/CI Compliant with Revision 1.0

Sync Compatibility Separate Sync / Composite Sync / SOG

Video Compatibility Shall be compatible with all PC type computers,

Macintosh computers, and after market video cards

Resolution Compatibility

640 x 350, 640 x 400, 640 x 480, 640 x 870, 720 x 400,

720 x 480, 720 x 576, 800 x 600, 832 x 624, 1024 x

768, 1152 x 864, 1152 x 870, 1280 x 720, 1280 x 768,

1280 x 960, 1280 x 1024, 1360 x 768, 1400 x 1050,

1440 x 900, 1600 x 1200, 1680 x 1050, 1920 x 1080,

1920 x 1200

Exclusions Not compatible with interlaced video

ViewSonic Corporation Confidential -Do Not Copy VP2330wb

USB INTERFACE

Up Stream Connector B type USB port x1

Down Stream Connector A type USB port x4

Compatibility Compliant with Revision 2.0

Power The hub gets power from the display.

POWER SUPPLY

Internal Power Supply Delta ADP-120UB B

Input Voltage Range 90 to 264 VAC

Input Frequency Range 47.5 to 63 Hertz

Short Circuit Protection Output can be shorted without damage

Over Current Protection 5.0 A typical at 12.0 VDC

Leakage Current 3.5mA (Max) at 254VAC / 60Hz

Efficiency 80 % typical at 115VAC Full Load

Fuse Internal and not user replaceable

Power Dissipation TBD Watts (typ)

Max Input AC Current 1.5 Arms @ 90VAC, 0.75 Arms @180VAC

Inrush Current (Cold Start) 50 A (max) @ 115VAC

90 A (max) @ 230VAC

Power Supply Cold Start Shall start and function properly when under full

load, with all combinations of input voltage, input

frequency, and operating temperature.

Power Supply Transient Immunity Shall be able to withstand an ANSI/IEEE

C62.41-1980 6000V 200 ampere ring wave

transient test with no damage.

Power Supply Line Surge Immunity Shall be able to withstand 1.5 times nominal line

voltage for one cycle with no damage.

Power Supply Missing Cycle Immunity Shall be able to function properly, without reset or

visible screen artifacts,

when ½ cycle of AC power

is randomly missing at nominal input.

Power Supply Acoustics

The power supply shall not produce audible noise

that would be detectable by the user. Audible

shall defined to be in compliance with ISO 7779

(DIN EN27779:1991) Noise measurements of

machines acoustics. Power Switch noise shall not

be considered.

Power Saving Operation(Method) VESA DPMS Signaling

On Mode < 81 W (Typ) / 85 W (max)

Power Consumption Active Off < 4W

Recovery Time On Mode = N/A, Active Off < 3 sec

ViewSonic Corporation Confidential -Do Not Copy VP2330wb

ELECTRICAL REQUIREMENT

Horizontal / Vertical Frequency

Horizontal Frequency 24 –92 kHz

Vertical Refresh Rate 50 –85* Hz.

Maximum Pixel Clock 165 MHz

Sync Polarity Independent of sync polarity.

Timing Table Analog

Item

Timing

Separated

Composite

SOG

Digital -

TMDS

Remark

1640 x 350 @

Hz,

31.5 KHz



2640 x 350 @

Hz,

37.9 KHz



For Separated sync, Only horizontal full

screen, The vertical position is at the center.

3640 x 400 @

Hz,

31.5 KHz



For SOG sync, switch 640x400@60Hz and

640x480@60Hz by [1]+[2] short cut key

(primary = 640x480@60Hz)

4640 x 400 @

Hz,

31.5 KHz



For Separated Sync, Switch 640x400@70Hz

and 720x400@70Hz by [1]+[2] short cut key

(primary = 640x400@70Hz)

5640 x 400 @

Hz,

37.9 KHz



For Separated Sync, Switch 640x400@85Hz

and 720x400@85Hz by [1]+[2] short cut key

(primary = 640x400@85Hz)

6640 x 480 @

Hz,

24.7 KHz



7640 x 480 @

Hz,

31.5 KHz



For SOG sync, switch 640x400@60Hz and

640x480@60Hz by [1]+[2] short cut key

(primary = 640x480@60Hz)

8640 x 480 @

Hz,

35 KHz



9640 x 480 @

Hz,

37.9 KHz



10 640 x 480 @

Hz,

37.5 KHz



11 640 x 480 @

Hz,

43.3 KHz



12 720 x 400 @

Hz,

31.5 KHz



13 720 x 400 @

Hz,

37.9 KHz



For Separated Sync, Switch 640x400@85Hz

and 720x400@85Hz by [1]+[2] short cut key

(primary = 640x400@85Hz)

14 720 x 480 @

Hz,

31.5 KHz



15 720 x 576 @

Hz,

31.3 KHz



16 800 x 600 @

Hz,

24.7 KHz



17 800 x 600 @

Hz,

35.1 KHz



18 800 x 600 @

Hz,

37.9 KHz



19 800 x 600 @

Hz,

48.1 KHz



20 800 x 600 @

Hz,

46.9 KHz



21 800 x 600 @

Hz,

53.7 KHz



22 832 x 624 @

Hz,

49.7 KHz



23 1024 x 768 @

Hz,

39.6 KHz



For Separated and Composite sync, Switch

1024x768@50Hz and 1280x768@50Hz by

[1]+[2] short cut key (primery =

1024x768@50Hz)

24 1024 x 768 @

Hz,

48.4 KHz



25 1024 x 768 @

Hz,

56.5 KHz



26 1024 x 768 @

Hz,

58.1 KHz



27 1024 x 768 @

Hz,

60 KHz



ViewSonic Corporation Confidential -Do Not Copy VP2330wb

28 1024 x 768 @

Hz,

60.2 KHz



29 1024 x 768 @

Hz,

68.7 KHz



30 1152 x 864 @

Hz,

67.5 KHz



31 1152 x 870 @

Hz,

68.7 KHz



32 1280 x 720 @

Hz,

37.5 KHz



33 1280 x 720 @

Hz,

45 KHz



34 1280 x 768 @

Hz,

39.6 KHz



For Separated and Composite sync, Switch

1024x768@50Hz and 1280x768@50Hz by

[1]+[2] short cut key (primary =

1024x768@50Hz)

35 1280 x 768 @

Hz,

47.4 KHz



For analog sync, Switch 1280x768@60Hz

and 1360x768@60Hz by [1]+[2] short cut key

(primary = 1280x768@60Hz)

36 1280 x 768 @

Hz,

47.8 KHz



37 1280 x 768 @

Hz,

60.3 KHz



38 1280 x 768 @

Hz,

68.6 KHz



39 1280 x 960 @

Hz,

49.4 KHz



40 1280 x 960 @

Hz,

59.7 KHz



41 1280 x 960 @

Hz,

75.2 KHz



42 1280 x 960 @

Hz,

85.9 KHz



43 1280 x 1024

Hz,

52.7 KHz



44 1280 x 1024

Hz,

64 KHz



45 1280 x 1024

Hz,

80 KHz



46 1280 x 1024

Hz,

91.1 KHz



47 1360 x 768 @

Hz,

47.7 KHz



For analog sync, Switch 1280x768@60Hz

and 1360x768@60Hz by [1]+[2] short cut key

(primary = 1280x768@60Hz)

48 1400 x 1050

Hz,

54.1 KHz



49 1400 x 1050

Hz,

64.7 KHz



For analog sync, Switch 1400x1050@60Hz

and 1680x1050@60Hz by [1]+[2] short cut

key (primary = 1400x1050@60Hz)

50 1400 x 1050

Hz,

65.3 KHz



For Separated and Composite sync, Switch

1400x1050@60Hz and 1680x1050@60Hz

by [1]+[2] short cut key (primary =

1400x1050@60Hz)

51 1400 x 1050

Hz,

82.3 KHz



52 1440 x 900 @

Hz,

55.5 KHz



53 1440 x 900 @

Hz,

59.9 KHz



54 1440 x 900 @

Hz,

75 KHz



55 1440 x 900 @

Hz,

84.8 KHz



56 1600 x 1200

Hz,

61.8 KHz



57 1600 x 1200

Hz,

75 KHz



58 1680 x 1050

Hz,

64.7 KHz



For analog sync, Switch 1400x1050@60Hz

and 1680x1050@60Hz by [1]+[2] short cut

key (primary = 1400x1050@60Hz)

59 1680 x 1050

Hz,

65.3 KHz



For Separated and Composite sync, Switch

1400x1050@60Hz and 1680x1050@60Hz

by [1]+[2] short cut key (primary =

1400x1050@60Hz)

60 1920 x 1080

Hz,

28.1 KHz



61 1920 x 1080

Hz,

33.8 KHz



62 1920 x 1200

Hz,

74 KHz



*1. Tolerance ≧±2KHz. (if the range dose not cover other timing mode)

*2. Any timing not in the list, it should display as normal or show on “OUT OF RANGE” OSD message

without blanking.

*3. The image quality of 85Hz mode might be worse than 75Hz.

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