ViewSonic VX1962wm Service Manual
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ViewSonic VX1962wm Service Manual

ViewSonic VX1962wm Service Manual

19” color tft lcd display vs series
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Service Manual

ViewSonic VX1962wm/wmp-3
Model No. VSXXXXX
19" Color TFT LCD Display
(VX1962wm/wmp-3_SM Rev. 1a Apr. 2009)
ViewSonic 381 Brea Canyon Road, Walnut, California 91789 USA - (800) 888-8583

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  • Page 1: Service Manual

    Service Manual ViewSonic VX1962wm/wmp-3 Model No. VSXXXXX 19” Color TFT LCD Display (VX1962wm/wmp-3_SM Rev. 1a Apr. 2009) ViewSonic 381 Brea Canyon Road, Walnut, California 91789 USA - (800) 888-8583...

  • Page 2: Revision History

    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.

  • Page 3: Table Of Contents

    TABLE OF CONTENTS 1. Precautions and Safety Notices ..................4 2. Specification ........................7 3. Front Panel Function Control Description ............... 8 4. Circuit Description ......................13 5. Adjusting Procedure ......................20 6. Trouble Shooting Flow Chart .................... 29 7. Block Diagrams ........................ 30 8.

  • Page 4: Precautions And Safety Notices

    1. Precautions and Safety Notices 1. Precautions and Safety Notices 1.1 Safety Precautions This monitor is manufactured and tested on a ground principle that a user’s safety comes first. However, improper use or installation may cause damage to the monitor as well as the user. Carefully go over the following WARNINGS before installing and keep this guide handy.
  • Page 5 1.4 Handing and Placing Methods Correct Methods: Incorrect Methods: Only touch the metal frame of the LCD panel or the Surface of the LCD panel is pressed by fingers and that front cover of the monitor. Do not touch the surface of may cause “Mura.”...
  • Page 6 Place the monitor on the lap, the panel surface must The panel is placed facedown on the lap. That may be upwards. cause “Mura.”...

  • Page 7: Specification

    2. Specification...

  • Page 8: Front Panel Function Control Description

    3. Front Panel Function Control Description Use the buttons on the front control panel to display and adjust the OSD controls which display on the screen.
  • Page 9 Do the following to adjust the display setting: 1. To display the Main Menu, press button [1]. NOTE: All OSD menus and adjustment screens disappear automatically after about 15 seconds. This is adjustable through the OSD timeout setting in the setup menu. 2.

  • Page 10: Main Menu Controls

    Main Menu Controls Adjust the menu items shown below by using the up ▲ and down ▼ buttons. Control Explanation Control Explanation Auto Image Adjust automatically sizes, centers, and fine tunes the video signal to eliminate waviness and distortion. Press the [2] button to obtain a sharper image. NOTE: Auto Image Adjust works with most common video cards.
  • Page 11 Information displays the timing mode (video signal input) coming from the graphics card in ® the computer, the LCD model number, the serial number, and the ViewSonic website URL. See your graphics card’s user guide for instructions on changing the resolution and refresh rate (vertical frequency).
  • Page 12 H. Size (Horizontal Size) adjusts the width of the screen image. Fine Tune sharpens the focus by aligning text and/or graphics with pixel boundaries. NOTE: Try Auto Image Adjust first. Sharpness adjusts the clarity and focus of the screen image. Dynamic Contrast allows the user to turn the contrast ratio enhancement on or off.

  • Page 13: Circuit Description

    4. Circuit Description 4.1 Main Board NT68670HTFG (U2): integrate ADC, OSD, SCALER, MCU, LVDS, convert analog RGB into digital and room and shrink scaling output to LCD panel. The NT68670 is a highly integrated flat panel display controller that interfaces analog, digital, and video inputs. It combines a triple ADC, a DVI compliant TMDS receiver, a digital YUV receiver, a high quality zoom and shrink engine , a multi-color on screen display (OSD) controller , an advanced color engine , an liquid crystal display accelerator over –...
  • Page 14 PIN Function:...
  • Page 19 AP1117D33L : DC power convert, convert to 3.3v. AP1117 is a low dropout positive adjustable or fixed-mode regulator with 1A output current capability. The product is specifically designed to provide well-regulated supply for low voltage IC applications such as high-speed bus termination and low current 3.3V logic supply.

  • Page 20: Adjustment Procedure

    5. Adjustment Procedure Setting the Timing Mode Setting the timing mode is important for maximizing the quality of the screen image and minimizing eye strain. The timing mode consists of the resolution (example 1680 x 1050) and refresh rate (or vertical frequency; example 60 Hz).
  • Page 21 Enter into the factory mode: AC ON the monitor with signal connected, and press “power” button to DC OFF the monitor, then press”1” and “power” button at the same time to enter factory mode; Gain adjustment: Move cursor to “Factory” and press “2” key. Move cursor to “...

  • Page 22: Firmware Upgrade Procedure

    5.2 Firmware Upgrade Procedure 5.2.1 Equipment needed: - Monitor( NT Series ) - Fixture for Firmware Upgrade - Power Adapter *1 for Fixture - VGA Cable *1 - PC (Personal Computer) - LPT Cable *1 - Firmware Upgrade Program - One additional monitor for checking the program execution ISP tool LPT Cable VGA Cable...
  • Page 23 Hardware Connect status a Connect ISP_Tool with PC by LPT Cable. b Connect Power Cord to Monitor. c Connect V1962wm/wmp-3 to the ISP_Tool by VGA cable. 5.2.2 Update the NT’S firmware ISP tool: “Writer.exe” This tool update firmware for NOVATEK (U2) You should jump the pin to “For Flash”...
  • Page 24 Double click “Writer.exe” This tool can auto detect the right MCU programe speed,the process as follow:...
  • Page 25 When auto detect is finished,click “Load Hex”,then chosse the firmware that you want to update Click “Auto”,then the update will begin.Wait for a moment until the bar is 100%,the program windows will show “Programing Success”.This means the update is successful.
  • Page 26 5.3 DDC Key in Procedure Note: 1. Every time after replacing the main board, you have to do the DDC key in. 2. If you find the DDC does not conform to the LCD monitor, you have to do the DDC key in. 5.3.1 Equipment Needed V1962wm/wmp-3 PC (Personal computer)
  • Page 27 For analog a. Double-click ，appear as follow Figs: b. Click...
  • Page 28 c. Key in the Serial Number printed on the barcode label, then click “OK” QUJ070100001 12 codes, for example. d. Unit appears the following Fig, writer completed.

  • Page 29: Trouble Shooting Flow Chart

    6. Troubleshooting Flow Chart...

  • Page 30: Block Diagrams

    7. Block Diagram 7.1 Main Board LCD Interface (CN3) EEPROM M24C16 Crystal Scalar IC NT68670HTFG (U3) 12MHz (Include MCU, ADC, OSD) (Y1) (U2) DVI_SCL DVI_SCL DVI_SDA EEPROM DVI_SDA Key Control M24C04 interface (U4) (CN404) EEPROM EEPROM M24C02 M24C02 (U6) (U1) H sync D-DATA V sync...

  • Page 31: Power Board

    7.2 Power Board Diode rectifier & Filter Transformer AC input Bridge Rectifier Diode rectifier EMI filter and Filter & Filter Feedback Over Circuit Voltage Control IC Protect 13.8V Syntony circuit and Output DC/AC ON/OFF Nu-Pulse ON/OFF Circuit Control IC Control Lamp Feedback Circuit...

  • Page 32: Schematic Diagrams

    8. Schematic Diagrams 8.1 Main Board 100M/33ohm VGA_5V VGA_VDD VGA_SCL VSCL RAI+ 0402/56R/1% 0402/47n/16V/Y BK1608HS330 VGA_SDA VSDA BAV70W/RoHS 0402/75R/1% NC/BAV99/RoHS 0402/3.9K/5% VGA_5V VGA_SCL RAI- RI1- 0402/100R/1% 0402/47n/16V/Y VGA_SDA RI1- M24C02B-10TU-1.8/RoHS NC/0402/100n/16V/Y GND_POWER 0402/100n/16V/Y 0402/470R/1% SOGI GND_POWER SOGI GND_POWER 0402/1n/16V/7 GAI+ 0402/56R/1% 0402/47n/16V/Y RAI+...
  • Page 33 Scaler VGA_3V3 ADC_VAA PVCC CVDD1V8 VGA_3V3 2,4,5 CVDD1V8 ADC_VAA VGA_3V3 DVDD ADC_VAA 2,4,5 0402/100n/16V/Y GND_POWER DVDD 0402/100n/16V/Y 0402/100n/16V/Y 0402/100n/16V/Y DVDD 2,4,5 0603/10u/6.3V/5/B MCB1608S601EA 0603/0R/RoHS UWT1C221MCL1GS 0402/100n/16V/Y 0402/100n/16V/Y GND_POWER GND_POWER 0402/100n/16V/Y GND_POWER B_D[0..19] B_D[0..19] 4 GND_POWER 0402/470R/1% B_D17 MCU_VDD VGA_3V3 REXT RSRB3M/DHS B_D16 RSRB3P/DVS...
  • Page 34 Interface VGA_3V3 LIPS Interface AP1117D33L-13 V33S VGA_3V3 2,3,5 DVDD V33S 2,3,5 DVDD 2,3,5 VOUT VOUT 0805/0R/5% 0805/0R/5% ADC_VAA HEADER2X4FR2.54/RoHS EC31QS03L/RoHS LIPS_5V +5V1 INV_ADJ 3 ADC_VAA 2,3,5 INV_ON/OFF 3 MCU_VDD 1206/10u/10V/Y /E 1206/10u/6.3V/5/RoHS LV101M016E055R LIPS_5V 6 MCU_VDD 2,3,5 0805/0R/5% (SCALER VCC) 0402/100n/16V/Y 1206/10u/10V/Y /E GND_POWER...
  • Page 35 DVI_SCL 0402/100R/5% DVI_VDD DVI_VDD DVI_SCL DSCL DVI_SDA 0402/100R/5% DVI_SDA DSDA 0402/4.7K/5% 0402/4.7K/5% DVI_VDD CVDD1V8 CVDD1V8 DVI_5V DVI_SCL DVI_SDA DVI_SCL 3 DVI_SDA 3 +5V 2,4 NC/0402/2.2K/5% NC/UDZSF-5.6B/RoHS NC/UDZSF-5.6B/RoHS NC/0402/10K/5% BAV70W/RoHS NC/0402/10K/5% 0402/100n/16V/Y 0402/3.9K/5% DVI_5V GND_POWER GND_POWER VCLK 0402/47K/5% M24C02B-10TU-1.8/RoHS GND_POWER GND_POWER DATA0+ DATA0+ RX0+...
  • Page 36 AUDIO LIPS_5V 5V_AMP 0603/0R/5% LIPS_5V LV101M016E055R 1206/10u/10V/Y 1206/10u/10V/Y NC/VPORT0603470KV05T MUTE SPK_R- MUTE ROUT- AMP_SHDN 5V_AMP /SHDN 0402/1u/10V/Y RIN- 0402/0R/5% GND_AUDIO SPK_R+ RIN- ROUT+ 0805/2.2u/16V/Y GND_AUDIO BY PASS SE/BTL GND_AUDIO 0402/0R/5% 0402/1u/10V/Y LIN- SPK_L+ 2SJ-05101NC3 LIN- LOUT+ VOL_PWM 5V_AMP NC/VPORT0603470KV05T SPK_L- VOLMAX LOUT- NC/0402/0R/5%...
  • Page 37 8.2 Power Board L203 R211 C211 IC_VCC R212 R213 R101 C101 ZD201 D211 GND2-3 C212 C213 D101 R201 GND1 R209 GND2-3 GND2-1 1 D/ST GND1 R202 GND2-1 3 C/OCP C201 5 GND PM/SS/LATCH L201 D201 R110 R104 C105 C104 C103 PC1-B +5V/2.5A GND-FG...
  • Page 38 8.3 Key Board [SELECT] [AUTO] [KEY_DOWN] [KEY_UP] [MENU] [PWR_SW] DTSMG-62N DTSMG-62N TSSB-3L DTSMG-62N DTSMG-62N AUTO KEY _DOWN KEY _UP MENU LED_OR1 LED_GR1 PWR_SW AUDIOR- AUDIOR+ AUDIOL- AUDIOL+ 19-21VGC/TR8 19-21UY OC/S530-A2/TR8 BLUE LED Orange LED 3802Y -E002-NNN 88202-15011 3802Y -E002-NNN...

  • Page 39: Pcb Layout Diagrams

    9. PCB Layout Diagrams 9.1 Main Board...
  • Page 41 9.2 Power Board...
  • Page 44 9.3 Key Board...
  • Page 45 10. Exploded Diagram and Exploded Parts List 10.1 EPL...
  • Page 46 Item Description Part Number Q'ty BEZEL DECORATION LENS LOGO FRONT LOGO PANEL MYLAR 73-d0157632 COVER-AD HINGE COVER BASE SEAT_L SEAT_R SEAT-PLATE RUBBER FOOT 40A1769201 BASE SCREW Q01G6077 1 SCREW (T3X6) 0Q1G 130 6120 SCREW (Q3X8) 0Q1G 130 8120 STAND STAND_L DECORATION_STAND_R WIRE_MOUNT HINGE TOP...
  • Page 47 10.2 PPL Item Description Q'ty Signal cable Power cable DVI cable Audio Cable EPS(L) LCD monitor BASE EPS (R) Manual Carton...

  • Page 48: Recommended Spare Parts List

    11. Recommended Spare Parts List T9RMNBMKYWVSDN Location Part Number Description Remark 019G6014 1 TIE FOR STRAP 023G3178709 3A LOGO 023G3178709 4A VSC17-LCD FRONT LOGO 040G 581 26704 SHIPPING LABEL 041G 68508 A CONTROL CARD 044G6002834 1A PAPER BOARD 044G9003194 CORNER PAPER 050G 600 1 W WHITE STRAP 050G 600 2...
  • Page 49 0M1G1740 8120 SCREW FOR STD/MF 42-D020715/42-D000649 0M1G1740 12120 SCREW 42-D021241 0Q1G 130 6120 SCREW (T3X6) 0Q1G 130 8120 SCREW 42A9930011 0Q1G1830 8120 SCREW(3X8) 42A9230001 N15G0042 1 SEAT-PLATE N34G0203AFQ 1B0101 STAND N34G0207AFQ 1B0101 BASE N34G0213AFQ 1B0101 REAR COVER N37G0021 1 HINGE TOP N37G0021 2 HINGE DOWN Q01G6077 1...
  • Page 50 057G 759 2 RK7002FD5T116 SOT-23 BY ROHM 057G 763 1A AP2305N 061G0402000 RST CHIP MAX 0R05 1/16W 061G0402000 RST CHIP MAX 0R05 1/16W 061G0402000 RST CHIP MAX 0R05 1/16W 061G0402000 RST CHIP MAX 0R05 1/16W 061G0402000 RST CHIP MAX 0R05 1/16W 061G0402000 RST CHIP MAX 0R05 1/16W 061G0402100 0F...
  • Page 51 061G0402103 RST CHIPR 10 KOHM +-5% 1/16W 061G0402103 RST CHIPR 10 KOHM +-5% 1/16W 061G0402103 RST CHIPR 10 KOHM +-5% 1/16W 061G0402104 RST CHIPR 100 KOHM +-5% 1/16W 061G0402105 RST CHIPR 1MOHM +-5% 1/16W 061G0402106 RST CHIP 10M 1/16W 5% 061G0402221 RST CHIPR 220 OHM +-5% 1/16W 061G0402221...
  • Page 52 061G0402750 9F RST CHIP 75 OHM 1/16W 1% 061G0402750 9F RST CHIP 75 OHM 1/16W 1% 061G0603000 RST CHIP MAX 0R05 1/10W 061G0603000 RST CHIP MAX 0R05 1/10W 061G0603000 RST CHIP MAX 0R05 1/10W 061G0603000 RST CHIP MAX 0R05 1/10W 061G0603000 RST CHIP MAX 0R05 1/10W 061G0805000...
  • Page 53 065G0402473 17 CAP CHIP 0402 47NF K 16V Y5V 065G0402473 17 CAP CHIP 0402 47NF K 16V Y5V 065G0402473 17 CAP CHIP 0402 47NF K 16V Y5V 065G0402473 17 CAP CHIP 0402 47NF K 16V Y5V 065G0402473 17 CAP CHIP 0402 47NF K 16V Y5V 065G0402473 17 CAP CHIP 0402 47NF K 16V Y5V 065G0603106 05...
  • Page 54 BASE ASSEMBLY PRODUCE CARD Q41G780070966A SRS INSTALLATION GUIDE Q45G2007M0101A PE BAG Q70G9002709 3A VX1962 CD USA 040G 58162435A P/N LABEL FOR MANUAL PE BAG N40G000196855A CARTON LABEL N40G000196867A S/N LABEL FOR VIEWSONIC E750 750GLM190KZ132C0VS PANEL A190Z1-003 SJ0Z12AD01 NB CMO 2nd source...

  • Page 55: Different Parts List

    12. Different Parts List Diversity of T9RMNBMKYWV6DN compared with T9RMNBMKYWVSDN Location Part Number Description 705GQ934049 19"VSC REAR- STAND-BASE ASS'Y N34G0203AFQ 1B0102 STAND N34G0207AFQ 1B0102 BASE N34G0213AFQ 1B0102 REAR COVER N33G0082BDN 1L KEYPAD N34G0201AFQ 1B0102 BEZEL L19WA-7VSC6 N34G0202BDN 1B DECORATION N34G0204BDN 1B0119 STAND_L N34G0205BDN 1B0119 DECORATION_STAND_R...
  • Page 56 Reader’s basic dada: Name: Title: Company: Add: Tel: Fax: E-mail: After completing this form, please return it to ViewSonic Quality Assurance in the USA at facsimile 1-909-839-7943. You may also e-mail any suggestions to the Director, Quality Systems & Processes (marc.maupin@viewsonic.com)

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