ViewSonic va1616w-8 Service Manual
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ViewSonic va1616w-8 Service Manual

ViewSonic va1616w-8 Service Manual

16" color tft lcd display
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Service Manual

ViewSonic VA1616w-8
Model No VSXXXXX
16" Color TFT LCD Display
(VA1616w-8 SM Rev. 1a Feb. 2009)
ViewSonic 381 Brea Canyon Road, Walnut, California 91789 USA - (800) 888-8583

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  • Page 1: Service Manual

    Service Manual ViewSonic VA1616w-8 Model No VSXXXXX 16” Color TFT LCD Display (VA1616w-8 SM Rev. 1a Feb. 2009) ViewSonic 381 Brea Canyon Road, Walnut, California 91789 USA - (800) 888-8583...

  • Page 2: Revision History

    Copyright Copyright © 2008 by ViewSonic Corporation. 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 ViewSonic Corporation.

  • Page 3: Table Of Contents

    TABLE OF CONTENTS 1. Precautions And Safety Notices 2. Specification 3. Front Panel Control And Indicators 4. Circuit Description 5. Adjustment Procedure 6. Troubleshooting Flow Chart 7. Block Diagram 8. Schematic Diagram 9. PCB Layout Diagram 10. Exploded Diagram And Spare Parts List 11.

  • Page 4: 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 Surface of the LCD panel is pressed by fingers and the front cover of the monitor. Do not touch the that may cause “Mura.” surface of the polarizer.
  • Page 6 Place the monitor on the lap, the panel surface The panel is placed facedown on the lap. That may must be upwards. cause “Mura.” - 6 –...

  • Page 7: Specification

    Warning: Do not set the graphics card in your computer to exceed these refresh rates; doing so may result in permanent damage to the LCD display. ® Macintosh computers older than G3 require a ViewSonic Macintosh adapter. To order an adapter, contact ViewSonic.
  • Page 8 2.2 INTERFACE DESCRIPTION D-SUB 15 PIN CONNECTOR Pin Number Pin Function Red video input Green video input Blue video input No Connection Ground Red video ground Green video ground Blue video ground H/V sync ground No connection (SDA) Horizontal sync (Composite sync) Vertical sync (SCL) SIGNAL LEVEL...

  • Page 9: Front Panel Control And Indicators

    3.Front Panel Function Controls And Indicators - 9 –...
  • Page 10 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 11 Main Menu Controls Adjust the menu items shown below by using the up and down buttons. 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.
  • Page 12 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 13 Conserve: Decreases the brightness by 50%. NOTE: When the ECO Mode is set to “Optimize” or “Conserve”, the Brightness, Contrast, and Dynamic Contrast cannot be adjusted. Setup Menu displays the menu shown below: Language Select allows the user to choose the language used in the menus and control screens.
  • Page 14 Recall both of Contrast and Brightness to default without [▼] + [▲] OSD message. Toggle 720x400 and 640x400 mode when input 720x400 [1] + [2] or 640x400 mode White Balance 1. It will not shown on user’s guide [1] + [▼] + [▲] 2.

  • Page 15: Circuit Description

    4. Circuit Description 4.1 LCD MONITOR DESCRIPTION The LCD MONITOR will contain a Main Board, an Power Board, Key Board which house the flat panel control logic, brightness control logic and DDC. Monitor Block Diagram Flat Panel and CCFL Drive. CCFL backlight RS232 Connector Power Board...
  • Page 16 4.3 PWPC BOARD BLOCK FUNCTION DESCRIPTION PWPC board combines to adapter and inverter, Adapter which commonly consists of bridge rectifier and filter, start circuit, PWM control circuit, protection circuits and convert to 12V, 5V DC voltage by input 90V-240V AC voltage that provide power supply for each chips in the main board and inverter.
  • Page 17 4.4 INTRODUCTION OF IC TSUM1PFR-LF(U401): integrate ADC, OSD, SCALER, MCU, LVDS, convert analog RGB into digital and room and shrink scaling output to LCD panel. PIN Function: Symbol Description SPI flash serial data output SPI flash chip select SPI flash serial select SPI flash serial data input DDCA_SDA/RS232_TX DDC Data for analog interface/ UART Ttransmitter /...
  • Page 18 - 18 –...
  • Page 19 AP1117D33LA(U404): DC power convert, convert to 3.3v. SST25LF020A-33-4C-SAE(U403): SST’s serial flash family features a four-wire, SPI-com-patible interface that allows for a low pin-count package occupying less board space and ultimately lowering total system costs. The SST25LF020A/040A devices significantly improve performance, while lowering power consumption. The total energy consumed is a function of the applied voltage, current, and time of application.
  • Page 20 Symbol Pin Name Functions To provide the timing of the serial interface. Commands, addresses, or input data are latched on the Serial Clock rising edge of the clock input, while output data is shifted out on the falling edge of the clock input. Serial Data To transfer commands, addresses, or data serially into the device.
  • Page 21 LD7552BPS (IC901): PWM control, high-voltage startup current. The circuit unit has functions such as over-current protection, over-voltage protection, output short-circuit protection and etc. The function of each pin and the inside circuit diagram are as follows: Name Function Ground Voltage feedback pin (same as the COMP pin in UC384X), By COMP connecting a photo-coupler to close the control loop and achieve the regulation...
  • Page 22 TL494(IC801): The TL494 incorporates all the functions required in the construction of a pulse-width-modulation (PWM) control circuit on a single chip. Designed primarily for power-supply control, this device offers the flexibility to tailor the power-supply control circuitry to a specific application. PIN Descriptions: - 22 –...
  • Page 23 - 23 –...

  • Page 24: Adjustment Procedure

    5. Adjustment Procedure 5.1 ADJUSTMENT CONDITIONS AND PRECAUTIONS 1. Approximately 30 minutes should be allowed for warm up before proceeding. 2. Adjustments should be undertaken only on those necessary elements since most of them have been carefully preset at the factory. 3.
  • Page 25 Set the Contrast to 70，Adjust the Brightness to 100. 5.) Gain adjustment : Move cursor to “-F-” and press MENU key A、Adjust 9300 color-temperature (1)、Switch the CA-210 to x、y、Lv -Mode (with press “MODE” button ) (2)、Switch the MEM. channel to Channel 1 ( with up or down arrow on CA-210 ) (3) 、...
  • Page 26 5.4 Factory Defaults Item Defaults Item Defaults Contrast Input Priority Brightness 100% Resolution Notice Color Temperature 6500K Volume Sharpness 100% Balance OSD H. Position Treble OSD V. Position Bass OSD Time Out 720x400 / 640x400 720x400 OSD Background ON : For Region code = E/G/P/A/S/K/U/J units only OFF: For Region code = M units only...
  • Page 27 Function Test Display Pattern Item Test Content Pattern Specification Remark Frequency & Eliminate visual wavy Fine Line Moire Figure 1 Tracking noise. Contrast/Bright 16 gray levels sh should 16 Gray Scale Figure 2 ness be distinguishable. Horizontal and Vertical Horizontal & Vertical position of video should Boundary Figure 3...
  • Page 28 Horizontal & Vertical Thickness Pattern R. Color Pattern (Figure 4) (Figure 3) G. Color Pattern (Figure 5) B. Color Pattern (Figure 6) Full White Pattern (Figure 7) Dark Screen Pattern (Figure 8) - 28 –...
  • Page 29 Black-White Pattern (Figure 9) 4.3 Function Test and Alignment Procedure All Modes Reset You should do “All Mode Reset” (Refer to Chapter III-3. Hot Keys for Function Controls) first. This action will allow you to erase all end-user’s settings and restore the factory defaults.
  • Page 30 (b)Then, select and enter “Horizontal Size” or “Horizontal/Vertical Position” function to adjust the video boundary to be full scanned and within screen frame. White Balance Test Signal: 1366*768@60Hz Test Pattern: White and Black Pattern 1.5.8 R, G, B, Colors Contrast Test Signal: 1366*768@60Hz Test Pattern: R, G, B, Color Intensities Pattern and 16 Gray Scale Pattern - Check and see if each color is normal and distinguishable.
  • Page 31 Turn off the monitor by pressing “Power” button. 5.6 Firmware Upgrade Procedure When you receive the returned monitor, please check whether the firmware version is the latest. If not, please do the following procedures to upgrade it to the latest version. 1 Equipment Needed - Monitor( TSUM Series ) - Fixture for Firmware Upgrade...
  • Page 32 2.4 Connect Power Cord to Monitor(TSUM series). 2.5 Connect P3 to the Signal Generator (eg.Chroma2326) for verifying it after the operation being completed. 2.6 Connect PC to the additional monitor. JP1： to Power Adapter P1：to VGA Cable P3： to Signal Generator P2：to LPT Cable 3 Firmware Upgrade Procedure Step 1.
  • Page 33 Step 3. Click “Device” button . Make sure that parameters relative to WP# is followed bellow. Step 4. Click “Read” button. Select the object bincode on your corresponding directory. - 33 –...
  • Page 34 Step 5. Click “Auto” button. Be sure that function of Erase Device (File Area), Blank, Program and Verify is selected, then execute the flashing action by clicking the “Run” button. Step 6. If the flashing F/W has been completed, “Verify Ok” message will be shown on the right TextBox and Flash Status will be “8C”...
  • Page 35 Step 7. Unplug and replug power cord of Monitor(TSUM series) set and then check the OSD operation and image on srceen. Step 8. At last, do “Memory Recall.” 3.2 Setup Procedure 3.2.1 Connect P2 and monitor of Fixture with VGA ports of Monitor (TSUM Series) by VGA Cable.
  • Page 36 JP1： Power Adapter P2： VGA Cable P1： to LTP Cable 3.3 DDC Key In Procedure Sep1.Select and execute DDC Key In program - 36 –...
  • Page 37 - 37 –...
  • Page 38 Sep2:Inpute the S/N and execute “Enter” - 38 –...
  • Page 39 - 39 –...
  • Page 40 Sep3:Key the “Enter” and write the data - 40 –...
  • Page 41 Sep4:If ddc program OK and show “data compare ok” - 41 –...
  • Page 42 5.7 Packing Procedure - 42 –...

  • Page 43: Troubleshooting Flow Chart

    6.Troubleshooting Flow Chart - 43 –...

  • Page 44: Block Diagram

    7.Block Diagram LCD Interface EPR_SDA Scalar TSUM1PFR-LF EPR_SCL (Include:MCU,ADC,OSD) Crystal Flash Memory 14.31818MHz (User data /WB /EDID) H-SYNC V-SYNC D-Sub Connector OSD Control Interface (Key pad) - 44 –...

  • Page 45: Schematic Diagram

    8. Schematic Diagram 8.1 Main Board TSUM16FWR SCHEMATIC XGA/SXGA LVDS OUTPUT DSUB_R+ DSUB_R+ VCC1.8 DSUB_R- DSUB_R- DSUB_G+ DSUB_G+ VCC3.3 DSUB_G- DSUB_G- VCC1.8 DSUB_SOG DSUB_SOG CMVCC DSUB_B+ DSUB_B+ DSUB_5V DSUB_B- DSUB_B- VCC3.3 CMVCC1 DSUB_H DSUB_H CMVCC1 DSUB_V DSUB_V DSUB_5V DDC1_SDA DDC1_SDA CMVCC VCC3.3 DDC1_SCL...
  • Page 46 ESD_VCC 4 CMVCC CMVCC R458 DSUB_5V 4 VCC3.3 VCC3.3 CN404 D401 VCC3.3 R437 R439 BAV99 CMVCC1 SM340A D402 10K 1/16W 5% 10K 1/16W 5% CMVCC CMVCC1 5 VCC1.8 CMVCC BKLT-EN Q410 BKLT-VBRI R450 R449 KN2907AS BKLT-EN Q406 VCC1.8 C_PANEL_INDEX 2N3904S-RTK/PS PANEL_ID# 5 Volume C425...
  • Page 47 According to NDS's request to change According to NDS's request to move type of R101 from 0402 to 0603. the capacitors(C102, C103). H_Sy nc R101 0R05 1/10W 5% R102 100R 1/16W 5% DSUB_H V_Sy nc R103 100R 1/16W 5% FB102 DSUB_V R104 C101...
  • Page 48 AVDD VDDP VDDC VCC3.3 VDDP AVDD FB401 U401 VCC3.3 300OHM VCTRL VCTRL C403 C404 LVA3P 0.1uF/16V 0.1uF/16V DSUB_R+ RIN0P LVA3M DSUB_R- RIN0M PA[0..1] DSUB_G+ GIN0P PA[0..1] DSUB_G- GIN0M LVA2P DSUB_SOG SOGIN0 LVA2M DSUB_B+ BIN0P LVA1P DSUB_B- BIN0M LVA1M VCC1.8 VDDC DSUB_H HSY NC0 LVA0P...
  • Page 49 CN403 change to 14P Dip connector based on 715G2904-D R434 has to be changed from 0805 to 1206 CN403 PA[0..1] PB[0..9] LVB0P LVB0M PA[0..1] PB[0..9] LVB1P LVB1M LVB2P LVB2M LVBCKP LVBCKM LVB3P LVB3M PA[4..9] PA[4..9] CONN PANEL_VCC CMVCC 2006-11-7 Add pull up 4K7 to MVCC AO3401L R434 C420...
  • Page 50 8.2 Power Board CONN C839 T801 R821 1500PF/50V POWER X'FMR R817 1K 1/8W 10K 1/10W 1% CN801 R855 D805 15R 1/4W LL4148 C819 C801 F801 0.0022uF 30pF/3KV +12V 0 OHM 1/4W C802 R804 Q801 470UF/25V C824 R856 R801 D801 100R 1/8W PMBS3904 D810 0.1uF...
  • Page 51 R918 100 OHM 1/4W L904 R919 +12V 1.0uH 100 OHM 1/4W C912 ZD902 0.001uF C930 RLZ13B R920 C922 R946 100 OHM 1/4W 470UF/25V 150 OHM 2W 0.1uF C917 C918 680uF/25V 680uF/25V T901 R943 BD901 Q903 470R 1/8W D906 KBP208G PMBS3904 FCH10U10 C907 R904...

  • Page 52: Key Board

    8.3 Key Board KEY 1 R001 3K 1/10W KEY 2 R002 DOWN 3K 1/10W ORANGE POWER BLUE R003 2K OHM 1% 1/10W R004 2K OHM 1% 1/10W SW001 SW002 SW003 SW004 SW005 LED001 LED002 BLUE ORANGE CN001 KEY1 KEY2 DOWN KEY 2 KEY 1 POWER...

  • Page 53: Pcb Layout Diagram

    9. PCB Layout Diagram 9.1 MAIN BOARD PCB TOP VIEW - 53 – ViewSonic Corporation Confidential - Do Not Cop VA1616w...
  • Page 54 MAIN BOARD PCB BUTTON VIEW - 54 – ViewSonic Corporation Confidential - Do Not Cop VA1616w...
  • Page 55 9.2 POWER BOARD TOP VIEW POWER BOARD BUTTON VIEW - 55 – ViewSonic Corporation Confidential - Do Not Cop VA1616w...
  • Page 56 9.3 KEY BOARD TOP VIEW KEY BOARD BUTTON VIEW - 56 –...

  • Page 57: Exploded Diagram And Spare Parts List

    10.Exploded Diagram And Spare Parts List - 57 –...
  • Page 58 Item Description Part Number Q'ty DECORATION Q34G0332EB7 Q34G0330 KSA1L0130 BEZEL A33G0216EB7 2B KEY_PAD A33G0217 2 LENS_POWER MAINFRAME J15G8B15 1 Q34G0331 KR 1L REAR COVER HINGE Q37G0073011 J12G 808 1 RUBBER VESA Q34G0333 KR 1L STAND A33G0246 KR 1B CABLE CLIP BASE Q34G0334 KR 1L0133 FOOT...
  • Page 59 Packing For Shipping - 59 –...
  • Page 60 Item Description Part Number Q'ty CARTON Q44G5021709 1A HANDLE1/ HANDLE2 050G 600 2/050G 600 3 PE BAG FOR MANUAL Q45G 76 28 RN CD MANUAL Q70G5000709 2A Q41G5000709 3A Q44G5021201 MONITOR T69* PE BAG FOR MONITOR Q45G 88607 R Q44G5021101 D-SUB CABLE 089G 728HAA DB POWER CORD...

  • Page 61: Recommended Spare Parts List

    11.Recommended Spare Part List VA1616W-8 BOM list—T69MM5DY9WVSNN ViewSonic Universal Item Ref. P/N Description Q'ty number# 019G6014 1 TIE FOR STRAP 023G3178709 3A LOGO 023G3178709 4A VSC17-LCD FRONT LOGO 041G 68508 A CONTROL CARD 050G 600 2 HANDLE1 050G 600 3...
  • Page 62 EC 105℃ CAP 100UF M 25V 067G 3151014KV 067G 3151014KV EC 105℃ CAP 100UF M 25V 067G215V100 7R LOW E.S.R 10UF M 50V 088G 35315F HD D-SUB CONN F ATTACHED SCREW 093G 22 53 H 14.31818MHZ/30PF/49US 056G 562557 IC TSUM1PFR-LF 056G 563 52 IC AP1117D33L-13 TO252-3L DIODES 056G 662 13...
  • Page 63 061G0402103 RST CHIPR 10 KOHM +-5% 1/16W 061G0402103 RST CHIPR 10 KOHM +-5% 1/16W 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 061G0402121 RST CHIP 120R 1/16W 5% 061G0402203...
  • Page 64 065G0402473 12 CHIP 0.047UF 16V X7R 065G0402473 12 CHIP 0.047UF 16V X7R 065G0402473 12 CHIP 0.047UF 16V X7R 065G0402473 12 CHIP 0.047UF 16V X7R 065G0402473 12 CHIP 0.047UF 16V X7R 065G0402473 12 CHIP 0.047UF 16V X7R 065G0402473 12 CHIP 0.047UF 16V X7R 065G0402509 31 CHIP 5PF 50V NPO 065G0402509 31...
  • Page 65 077G 603 2C TO TACT SWITCH 081G 13 B GH LED GHB713A GUANGHONG 081G 13 Y GH LED GHY713C GUANGHONG WIRE HARNESS 6P(SANW)-6P(PH) 095G820H 6D506 100MM 061G0603200 1F RST CHIPR 2 KOHM +-1% 1/10W 061G0603200 1F RST CHIPR 2 KOHM +-1% 1/10W 061G0603300 1F RST CHIPR 3 KOHM +-1% 1/10W 061G0603300 1F...
  • Page 66 080GL17T 40 DN X'FMR TK.2001U.101 080GL19T 26 T X'FMR 610UH SRW24LQL-T15H016 087G 501 32 S AC SOCKET 087G 501 32 S AC SOCKET 087G 501 32 DL AC SOCKET DIP 3PIN+2PIN GROUND 093G 50460 28 BRIDGE DIODE KBP208G LITEON 093G3006 1 1 31DQ06FC3 NIHON INTER 095G 82010D508 WIRE HARNESS 10P(SAN)-9P(PH) 100MM...
  • Page 67 061G0603100 2F RST CHIPR 10K OHM +-1% 1/10W 061G0603100 2F RST CHIPR 10K OHM +-1% 1/10W 061G0603100 2F RST CHIPR 10K OHM +-1% 1/10W 061G0603100 2F RST CHIPR 10K OHM +-1% 1/10W 061G0603105 RST CHIPR 1M OHM +-5% 1/10W 061G0603105 RST CHIPR 1M OHM +-5% 1/10W 061G0603150 1F RST CHIPR 1.5 KOHM +-1% 1/10W...
  • Page 68 061G1206150 RST CHIPR 15 OHM +-5% 1/4W 061G1206150 RST CHIPR 15 OHM +-5% 1/4W 061G1206221 RST CHIPR 220 OHM +-5% 1/4W 061G1206304 RST CHIPR 300K OHM +-5% 1/4W 061G1206304 RST CHIPR 300K OHM +-5% 1/4W 061G1206304 RST CHIPR 300K OHM +-5% 1/4W 061G1206519 RST CHIPR 5.1 OHM +-5% 1/4W 061G1206684...
  • Page 69 093G 6433P BAV99 093G 39S 20 T RLZ22B LLDS 093G 39S 25 T RLZ5.1B LLDS 093G 39S 40 T RLZ 13B LLDS 093G 39S 40 T RLZ 13B LLDS 093G 39S 44 T RLZ18B LLDS 006G 31500 EYELET 056G 158 10 T IC AS431AZTR-E1 TO-92 061G152M10452T RST MOFR 100KOHM +-5% 2WS...
  • Page 70 095G 90 23 JUMPER 715G2852 1 VS POWER-PCB FR-1 193X122X1.6MM SS 067G215Y2207KT CAP 105℃ 22UF M 50V KINGNICHI 084G 56 3 B FUSE 3.15A 250V 056G 158 12 KIA431A-AT/P TO-92 084G 56 3 B FUSE 3.15A 250V 709G2852 QA001 CONSUMPTIVE ASS'Y 052G 2191 A PAPER TAPE...
  • Page 71 Q07G 1 5V60 WOODEN PALLET 0.011 Q34G0330 BEZEL L156W-7VSC3 KSA1L0130 Q34G0331 KR 1L REAR COVER Q34G0332EB7 1L DECORATION Q34G0335 KR 1L COVER-HINGE Q40G 15N709 2A RATING LABEL Q40G 58170931A HT POT LABEL Q40G0001624 4A PALLET LABEL 0.050 Q40G0001709 2A SN LANEL Q40G000270927A EPA LABEL Q44G5021101...
  • Page 72 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 suggestion to the Director, Quality System & Process (marc.maupin@viewsonic.com) - 72 –...

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