ViewSonic VS11446 Manuel de service

ViewSonic VX2235wm-4 Model No. VS11446 22” Color TFT LCD Display (VX2235wm-4_SM Rev. 1a Dec. 2006) Service Manual

7 ViewSonic Corporation Confidential - Do Not Copy VX2235wm-4 [1]+[2] short cut key. 22 1024 x 768 @ 60 Hz, 48.4 KHz　 　 　 　For SOG sync, th

3. Front Panel Function Control Description 8 ViewSonic Corporation Confidential - Do Not Copy VX2235wm-4 Main Menuwith OSD controlsFront Cont

9 ViewSonic Corporation Confidential - Do Not Copy VX2235wm-4 Do the following to adjust the display setting:1. To display the Main Menu, pres

10 ViewSonic Corporation Confidential - Do Not Copy VX2235wm-4 Main Menu ControlsAdjust the menu items shown below by using the up S and down

11 ViewSonic Corporation Confidential - Do Not Copy VX2235wm-4 Control ExplanationUser Color Individual adjustments for red (R), green (G), an

12 ViewSonic Corporation Confidential - Do Not Copy VX2235wm-4 Control ExplanationFine Tune sharpens the focus by aligning text and/or graphic

13 ViewSonic Corporation Confidential - Do Not Copy VX2235wm-4 Control ExplanationSetup Menu displays the menu shown below:Language Select all

4. Circuit Description 14 ViewSonic Corporation Confidential - Do Not Copy VX2235wm-4 RTD2553V LCD Monitor/MFM Controller General Embedded d

15 ViewSonic Corporation Confidential - Do Not Copy VX2235wm-4 Embedded OSD Embedded 12K SRAM dynamically stores OSD　 command and fonts Sup

16 ViewSonic Corporation Confidential - Do Not Copy VX2235wm-4 Auto-Position 1. Define the RGB color noise margin: When the value of color cha

Copyright Copyright © 2006 by ViewSonic Corporation. All rights reserved. No part of this publication may be reproduced, transmitted, transcribed, s

17 ViewSonic Corporation Confidential - Do Not Copy VX2235wm-4 Crystal Frequency Output RTD can output crystal frequency or 1/2 crystal frequen

5. Adjustment Procedure 18 ViewSonic Corporation Confidential - Do Not Copy VX2235wm-4 1. Function Test 1.1 Product - 22” LCD Monitor 1.2

19 ViewSonic Corporation Confidential - Do Not Copy VX2235wm-4 Analog Digital 29. 1280 x 720 @ 50Hz, 37.5 kHz 30. 1280 x 720 @ 60Hz, 45 kHz 3

20 ViewSonic Corporation Confidential - Do Not Copy VX2235wm-4 Horizontal & Vertical Thickness Pattern (Figure 3) R. Color Pa

21 ViewSonic Corporation Confidential - Do Not Copy VX2235wm-4 Black-White Pattern (Figure 9) 1.5 Function Test and Alignment Procedure 1.5

22 ViewSonic Corporation Confidential - Do Not Copy VX2235wm-4 (a) Select and enter “Manual Image Adjust” function on OSD Main Menu. (b) The

23 ViewSonic Corporation Confidential - Do Not Copy VX2235wm-4 2. Firmware Upgrade Procedure When you receive the returned monitor, please ch

24 ViewSonic Corporation Confidential - Do Not Copy VX2235wm-4 Step 2: Load file Press the Load MCU File button to select the file will be dow

25 ViewSonic Corporation Confidential - Do Not Copy VX2235wm-4 3. DDC Key In Procedure Note: 1. Every time after replacing the main board, you

3.3 DDC Key In Procedure 1.Run DDC.exe 2.Choose model number and conform the Time then Press “ENTER” key. 3.When appear the PIC “ choose DDC Ca

TABLE OF CONTENTS 1. Precautions and Safety Notices 12. Specification 33. Front Panel Function Control Description 84. Circuit Description

5.Press F9 enter the download interface 6.Key in the serial number or use the barcode reader to scan the barcode of the monitor, and press “ENTER”

Packing For Shipping And Disassembly Procedure Packing For Shipping 1. Packing Procedure 1.1 Paste protection film to protect the LCD TV. (Figure 1

Disassembly Procedure 1. Disassembly of Stand and Dust Cover from LCD TV. 1.1 Unscrew 4 screws that secure Stand Unit and detach Dust Cover from t

2. Disassembly of Rear Cover. 2.1 Unscrew 8 screws to remove Rear Cover. 3. Disassembly of Main Board,Power Board,IR Board,Speake

3.2. Unscrew 6 screws and disconnect the wires to remove Power Board. 3.3. Unscrew 2 screws and disconnect the wires to remove M

3.4. Unscrew 8 screws to remove Speaker and Bracket,Fix. 3.5. Unscrew 8 screws to remove Front Cover. Speaker B

3.6. Lay Panel Unit facedown and unscrew 4 screws on its right and left sides, to remove Panel Unit and Panel Bracket.

6. Troubleshooting Flow Chart 34 ViewSonic Corporation Confidential - Do Not Copy VX2235wm-4

6.1. NO POWER 6.2. MCU NO FUNCTION 35 ViewSonic Corporation Confidential - Do Not Copy VX2235wm-4

6.3. NO DISPLAY 36 ViewSonic Corporation Confidential - Do Not Copy VX2235wm-4

1. Precautions and Safety Notices 1 ViewSonic Corporation Confidential - Do Not Copy VX2235wm-4 1. Appropriate Operation (1) Turn off the pr

7. Block Diagram 37 ViewSonic Corporation Confidential - Do Not Copy VX2235wm-4

8. Schematic Diagrams 38 ViewSonic Corporation Confidential - Do Not Copy VX2235wm-4 ModelTitleDate Rev:ViewSonic CorporationDC TO DC8.1. DC T

39 ViewSonic Corporation Confidential - Do Not Copy VX2235wm-4 ModelTitleDate Rev:ViewSonic CorporationINPUT 8.2. INPUT add R188 add D? add ne

40 ViewSonic Corporation Confidential - Do Not Copy VX2235wm-4 ModelTitleDate Rev:ViewSonic CorporationSCALER8.3. SCALERClosed to ScalerPin3.H

41 ViewSonic Corporation Confidential - Do Not Copy VX2235wm-4 ModelTitleDate Rev:ViewSonic CorporationMCU 8.4. MCU231CEBClosed to MCU3.3Vadd

42 ViewSonic Corporation Confidential - Do Not Copy VX2235wm-4 ModelTitleDate Rev:ViewSonic CorporationAUDIO AMPLIFIER8.5. Audio Amplifier5/20

43 ViewSonic Corporation Confidential - Do Not Copy VX2235wm-4 ModelTitleDate Rev:ViewSonic CorporationPLACEMENT 8.6. PLACEMENTJP1AMP1201011DC

44 ViewSonic Corporation Confidential - Do Not Copy VX2235wm-4 ModelTitleDate Rev:ViewSonic CorporationKEY BOARD8.7. Key BoardD701LED231S704SW

45 ViewSonic Corporation Confidential - Do Not Copy VX2235wm-4 ModelTitleDate Rev:ViewSonic CorporationINVERTER8.8. INVERTERBrightness24VON_OF

46 ViewSonic Corporation Confidential - Do Not Copy VX2235wm-4 ModelTitleDate Rev:ViewSonic CorporationPOWER 8.9. POWER24V5V5VGNDGND5 VBrightn

2 ViewSonic Corporation Confidential - Do Not Copy VX2235wm-4 5.2. Handling and Placing Methods Correct Methods: Incorrect Methods: Only tou

9. PCB Layout Diagrams 47 ViewSonic Corporation Confidential - Do Not Copy VX2235wm-4 9.1. MAIN PCB TOP VIEW

48 ViewSonic Corporation Confidential - Do Not Copy VX2235wm-4 9.2. MAIN PCB BOTTOM VIEW

49 ViewSonic Corporation Confidential - Do Not Copy VX2235wm-4 9.3. CON PCB TOP VIEW 9.4. CON PCB BOTTOM VIEW

50 ViewSonic Corporation Confidential - Do Not Copy VX2235wm-4 9.5. POWER PCB TOP VIEW

51 ViewSonic Corporation Confidential - Do Not Copy VX2235wm-4 9.6. POWER PCB BOTTOM VIEW

10. Exploded Diagram and Exploded Parts List 52 ViewSonic Corporation Confidential - Do Not Copy VX2235wm-4

53 ViewSonic Corporation Confidential - Do Not Copy VX2235wm-4

ViewSonic Model Number: VS11446Rev: 1aSerial No. Prefix: QJQItem ViewSonic P/N Ref. P/N Q'ty1 N/A 2024275301P FRONT BEZEL VX2235/ABS 94HB BLAC

55 ViewSonic Corporation Confidential - Do Not Copy VX2235wm-4 ViewSonic Model Number: VS11446Rev: 1aItem ViewSonic P/N Ref. P/N Location Q&a

11. Recommended Spare Parts List 56 ViewSonic Corporation Confidential - Do Not Copy VX2235wm-4 Serial No. Prefix: QJQ Rev: 1aItem ECR/ECN

2. Specification 3 ViewSonic Corporation Confidential - Do Not Copy VX2235wm-4 1. LCD PANEL 1st panel source Type: Pixel Pitch Color F

ViewSonic Model Number: VS11446Rev: 1aSerial No. Prefix: QJQItem ViewSonic P/N Ref. P/N Description Location Universal number#Q'ty1 E-C-0404-38

Item ViewSonic P/N Ref. P/N Description Location Universal number#Q'ty80 N/A 2364600496P DIODE,SWITCH SMD MM4148 SOD80C GRANDE D104 RA 181 E-

Item ViewSonic P/N Ref. P/N Description Location Universal number#Q'ty164 E-Q-0402-1607 2360100796P XISTOR,PNP R SMD MMBT3906-F SOT-23 DIODES Q10

Item ViewSonic P/N Ref. P/N Description Location Universal number#Q'ty248 N/A 2253210496P RES CHIP 1/10W RC 0603 1/10W 100Kohm J T R608 1249 E-00

Item ViewSonic P/N Ref. P/N Description Location Universal number#Q'ty332 N/A 2362402200P PHOTO COUPLR K1010-3B (H4) COSMO I802 RC 1333 N/A 2

Item ViewSonic P/N Ref. P/N Description Location Universal number#Q'ty415 N/A 2428106150P JUMPER 0.6∮*15.0mm J804 1416 N/A 2428106150P JUMPER 0.6

Item ViewSonic P/N Ref. P/N Description Location Universal number#Q'ty496 N/A 2275450901P CAP CER TC 5P/3KV SL P=7.5 J C C905 1497 N/A 2336047723

Item ViewSonic P/N Ref. P/N Description Location Universal number#Q'ty580 E-00008180 2391302501P SPEAKER ASS'Y 2.5W/4ohm(R) L80*W29*H20 D.L

65 ViewSonic Corporation Confidential - Do Not Copy VX2235wm-4 * Reader’s Response* Dear Readers: Thank you in advance for your feedback on ou

4 ViewSonic Corporation Confidential - Do Not Copy VX2235wm-4 Short Cut Vivid ], Opticolor Skin Tone[Nature, reddish ,yellowish] Setup M

5 ViewSonic Corporation Confidential - Do Not Copy VX2235wm-4 UPC-A Code ITF-14 Code Serial Format Country of Origin 0 07 66907 25142 5 QJQyy

6 ViewSonic Corporation Confidential - Do Not Copy VX2235wm-4 Electrical Requirements Horizontal / Vertical Frequency Horizontal Frequency 24