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ViewSonic VS11422 Service Manual

Vg2230wm-3 22 inch color tft lcd display
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Service Manual

ViewSonic VG2230wm-3
Model No. VS11422
22" Color TFT LCD Display
(VG2230wm-3_SM Rev. 1a May. 2009)
ViewSonic 381 Brea Canyon Road, Walnut, California 91789 USA - (800) 888-8583

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  • Page 1: Service Manual

    Service Manual ViewSonic VG2230wm-3 Model No. VS11422 22” Color TFT LCD Display (VG2230wm-3_SM Rev. 1a May. 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 ........................6 3. Front Panel Function Control Description ............... 7 4. Circuit Description ......................12 5. Adjusting Procedure ......................24 6. Trouble Shooting Flow Chart .................... 33 7. Block Diagrams ........................ 34 8.

  • 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 panel or the front Surface of the panel is pressed by fingers & this may cover of the monitor. cause “ MURA “ Do not touch the surface of the polarizer .

  • Page 6: Specification

    2. Specification...

  • Page 7: 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. The OSD controls are explained at the top of the next page and are defined in “Main Menu Controls”.
  • Page 8 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 9: Main Menu Controls

    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. NOTE: Auto Image Adjust works with most common video cards.
  • Page 10 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 11 Setup Menu displays the menu shown below: Language Select allows the user to choose the language used in the menus and control screens. Resolution Notice advises the optimal resolution to use. If you enable the Resolution Notice shown above and your computer is set at a resolution other than 1680 x 1050, the following screen appears.

  • Page 12: Circuit Description

    4. Circuit Description 4.1 Main Board General Vivid Color™ ■ Embedded dual DDC with DDC1/2B/CI ■ Dynamic Contrast Control (DCC) ■ Zoom scaling up and down ■ Independent Color Management (ICM) ■ No external memory required. Scalar--- RTD2554VH-GR (U6) ■Require only one crystal to generate all timing. ■...
  • Page 13 Block Diagram...

  • Page 14: Pin Description

    Pin Description Input Port Name Description Note AVS0 1st ADC vertical sync input no power 5V Power from PIN 13 tolerance AHS0 1st ADC horizontal sync input no power 5V Adjustable Schmidt trigger tolerance Power from PIN 13 ADC_VDD ADC Power (1.8V) ADC_GND ADC Ground...
  • Page 15 TMDS (optional) Name Pin No Description Note TMDS_TST TMDS_TEST Pin Power-on-latch for host interface type REXT Impedance Match Reference. TMDS_VDD TMDS power (3.3V) RX2P Differential Data Input RX2N Differential Data Input TMDS_GND TMDS ground RX1P Differential Data Input RX1N Differential Data Input TMDS_VDD TMDS power (3.3V)
  • Page 16 BR3P BR3N BR2P BR2N BR1P BR1N AB3P AB3N AB2P AB2N AB1P AB1N ACLKP ACLKN AG3P AG3N AG2P AG2N AG1P AG1N AR3P AR3N AR2P AR2N AR1P AR1N Timing Controller Name Description TCON0 Refer to Pin share part. TCON1 TCON2 TCON4 44/50/121 TCON5 42/114 TCON6...
  • Page 17 DDC Channel Name Description DDCSCL1(ADC) Open drain, no power 5V tolerance DDCSDA1(ADC) Open drain, no power 5V tolerance DDCSCL2(DVI) Open drain, no power 5V tolerance (optional) DDCSDA2(DVI) Open drain, no power 5V tolerance (optional) Name Description PWM0 PWM1 48/111 PWM2 MISC Name Description...
  • Page 18 MCU--- RTD2120L-LF (U3) Overview This chip is the micro-processor of LCD monitor. It uses the design ware DW8051 of Synopsys as the 8051 core of this chip and is compatible with other industry 8051 series. Also, 96Kbyte FLASH with 8 bit bus is embedded in this chip which is licensed from TSMC 0.18um e-FLASH process.
  • Page 19 Application Block Diagram...
  • Page 20 Pin Description Internal Default Pin No. Name Pull output Pin Type Description Up/Down value PLCC LQFP General purpose P5.0/PWM0 1(P5.0) Open Drain I/O / PWM0 output General purpose P5.1/PWM1 1(P5.1) Open Drain I/O / PWM1 output General purpose P5.2/PWM2 1(P5.2) Open Drain I/O / PWM2 output...
  • Page 21 General purpose P3.3/INT1 1(P3.3) Standard 8051 I/O / External interrupt 1 General purpose P3.4/T0 1(P3.4) Standard 8051 I/O / Timer 0 General purpose P3.5/T1 1(P3.5) Standard 8051 I/O / Timer 1 General purpose P7.6/CLKO2 Push-Pull I/O / Clock out 2 General purpose P7.7 Push-Pull...
  • Page 22 P1.7 Standard 8051/ General purpose Push-Pull P1.6 Standard 8051/ General purpose Push-Pull P1.5 Standard 8051/ General purpose Push-Pull P1.4 Standard 8051/ General purpose Push-Pull P1.3 Standard 8051/ General purpose Push-Pull P1.2 Standard 8051/ General purpose Push-Pull P1.1 Standard 8051/ General purpose Push-Pull P1.0/ET2 1(P1.0)
  • Page 23 Pin Descriptions Name Pin # Function A resistor divider from this pin to the Vout pin and ground sets the output voltage. Adj (GND) (Ground only for Fixed-Mode) The output of the regulator. A minimum of 10uF capacitor (0.15Ω ≤ESR ≤20Ω) Vout must be connected from this pin to ground to insure stability.

  • Page 24: Adjusting 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 25 Gain adjustment: Move cursor to “Factory” and press “2” key. Move cursor to “ Auto Level” and press “2” key to adjust Gain and Offset automatically; (notice：this monitor do auto level must in T144(1280X1024@60Hz) P48(32 Grays)) a. Adjust 9300K color-temperature 1.
  • Page 26 5.2 Firmware Upgrade Procedure 5.2.1 Equipment needed: VG2230wm-3 PC (Personal computer) LPT cable Firmware upgrade program ISP Board Part No.: 715GT039-A LPT Cable VGA Cable...
  • Page 27 Hardware Connect status a Connect ISP_Tool with PC by LPT Cable. b Connect Power Cord to Monitor. c Connect monitor to the ISP_Tool by VGA cable. The process of ISP write is as follows. a. Double-click ，running the program as follows:...
  • Page 28 b. Choose , click , running the program as follows: c. Click icon, search the program” VG2230WM_RTD2554V_CMO_RSDS_DUAL_V011_081111_b.hex”, and click open: d. Click icon, search the program” VG2230WM_RTD2554V_CMO_RSDS_DUAL_EXTEND_V011_081111.hex”, and click open:...

  • Page 29: Ddc Key In Procedure

    f. Click icon, until appear the follow Fig, writer completed 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 TV, you have to do the DDC key in. 5.3.1 Equipment Needed VG2230wm-3 PC (Personal computer)
  • Page 30 5.3.3 Connect the DDC board as follow: Connect to the PC LPT Connect this port to the VSC VG2230wm-3’s VGA 12V Input Part No.：715GT034-B Note: If you can’t update the EDID firmware, please cut off the 5th Pin of the VGA cable that connects the monitor side.
  • Page 31 For analog a. Double-click ，appear as follow Figs： b. Click...
  • Page 32 c. Key in the Serial Number printed on the barcode label, then click “OK” QC9060100001 12 codes, for example. d. Unit appears the following Fig, writer completed.

  • Page 33: Troubleshooting Flow Chart

    6. Troubleshooting Flow Chart...

  • Page 34: Block Diagrams

    7. Block Diagrams 7.1 Main Board Crystal LCD Interface 24MHz (CN4, CN6) (Y1) Scalar IC RTD2554VH-GR RTD2120L-LF (U6) (U3) H sync D-DATA V sync D-CLK Key Control interface (CN404) D-Sub Connector Connector (CN2) (CN1)

  • Page 35: 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 Circuit Control IC Lamp Feedback BL_ADJ Circuit...

  • Page 36: Schematic Diagrams

    8. Schematic Diagrams 8.1 Main Board GND_POWER OPEN/UDZSF-5.6B/RoHS OPEN/BAV99/RoHS VGA_SDA GND_POWER VGA_SDA HSIN OPEN/0402/100n/16V/Y VSIN VGA_SCL VGA_SCL GND_POWER MLX89263-6762/RoHS OPEN/UDZSF-5.6B/RoHS OPEN/UDZSF-5.6B/RoHS GND_POWER OPEN/UDZSF-5.6B/RoHS GND_POWER GND_POWER OPEN/BAV99/RoHS VGA_5V GND_POWER VGA_5V OPEN/0402/100n/16V/Y OPEN/UDZSF-5.6B/RoHS GND_POWER GND_POWER OPEN/BAV99/RoHS GND_POWER OPEN/0402/100n/16V/Y HSIN VSIN HSIN VSIN 0402/2.2K/5% 0402/2.2K/5% GND_POWER...
  • Page 37 GND_POWER GND_POWER OPEN/UDZSF-5.6B/RoHS DVI_SCL DVI_SCL DVI_SCL DVI_SCL DVI_SCL DVI_SCL DVI_SCL DVI_SCL DVI_SCL DVI_SDA DVI_SDA OPEN/UDZSF-5.6B/RoHS RX2- RX2+ RX2- RX2+ RGB GND HSY NC VSY NC GND_POWER Modify 1k RX1- RX1+ SY NC GND RX1- RX1+ DVI_5V DDC SCL DDC SDA DVI_5V OPEN/PJSRV05-4 GND_POWER...
  • Page 38 0.8V MCU_VDD D19 BAV70W/RoHS BSS84-F VGA_5V DVI_5V MCU_VDD 0.24V NC/0402/4.7K/5% NC/0402/4.7K/5% NC/0402/100n/16V/Y 1N4148WS 1N4148WS SX34 NC/0402/100R/5% IICSCL + 0.79V - + 0.79V - NC/0402/100R/5% IICSDA 0402/10K/5% NC/24LC16BT-I/SNG/RoHS GND_POWER GND_POWER MCU_VDD MCU_VDD R137 0402/1.5K/5% MCU_VDD DVI_HPD R136 BSS84 0402/100R/1% MCU_VDD INV_ON/OFF INV_ON/OFF INV_ON/OFF INV_ON/OFF...
  • Page 39 V33S_PAD V33S_PAD V18S_C MCB1608S601EA V18S 100M/10ohm 0402/100n/16V/Y 0402/100n/16V/Y 0402/100R/5% 0402/47n/16V/Y 1206/47u/6.3V/5/RoHS GND_POWER GND_POWER MCB1005S100FA V33S GND_POWER V33S_PAD MCB1608S601EA 0402/75R/5% OPEN/0402/12p/50V/N V33S V33S GND_POWER GND_POWER 0402/100R/5% 0402/47n/16V/Y RI1- OPEN/0402/10K/5% 1206/47u/6.3V/5/RoHS GND_POWER GND_POWER 0402/0R/5% RESET_MCU OPEN/2N7002 GND_POWER 0402/100R/5% 0402/47n/16V/Y SOGI RESET_OUT OPEN/0402/2K/5% 0402/100R/5% 0402/47n/16V/Y GND_POWER...
  • Page 40 CN701 TO252 1206/4.7u/16V/Y/RoHS 0603/100n/25V/Y /RoHS FH12-36S-0.5SH(55)/RoHS V33D 0805/0R/5% EC50117KAG/3.3V/1A GND_POWER VOUT VOUT PANEL_ON/OFF INV_ON/OFF PANEL_ON/OFF DCDC_ON/OFF INV_ADJ DCDC_ON/OFF VCM_PWM R105 1206/47u/6.3V/5/RoHS VCM_PWM GVOFF 0402/1K/5% GVOFF HEADER 10 OPEN/0402/100n/16V/Y BSTHI BSTHI GND_POWER BR0N GND_POWER BR0N BR0P TO252 BR0P BR1N V33C1 BR1N BR1P BR1P BR2N...
  • Page 41 5V_AMP 0603/0R/5% 1206/10u/10V/Y LV101M016E055R OPEN/VPORT0603470KV05T MUTE MUTE ROUT- SPK_R- 5V_AMP AMP_SHDN /SHDN 0402/1u/10V/Y RIN- R83 0402/0R/5% RIN- ROUT+ SPK_R+ 0805/2.2u/16V/Y BY PASS SE/BTL 0402/0R/5% 0402/1u/10V/Y LIN- 2SJ-05101NC3 LIN- LOUT+ SPK_L+ 5V_AMP VOL_PWM OPEN/VPORT0603470KV05T VOLMAX LOUT- SPK_L- OPEN/0402/0R/5% LIN- APA2068 OPEN/0402/0R/5% RIN- 5V_AMP OPEN/0402/0R/5%...
  • Page 42 8.2 Power Board 5V & 13.8V OUTPUT FLYBACK PWM IC CIRCUIT EMI FILTER 2'nd L203 1'ST R211 +13.8V/0.7A Jumper 100R C211 1206 +13.8V 102/100V R212 0805 jumper R213 R214 C215 100R 2.4K 2.4K 0.6x7mm 470uF/25V 1206 1206 1206 T3.15A / 250V 10x16 330K R101...
  • Page 43 8.3 Key Board [SELECT] [AUTO] [KEY_DOWN] [KEY_UP] [MENU] [PWR_SW] TSSB-3L TSSB-3L TSSB-3L TSSB-3L TSSB-3L 88202-15011 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 <Variant Name> 　　筿　　　Τ　そ　 3802Y -E002-NNN Title OSD KEY PAD...
  • Page 44 HEADER 10_22 [PWR_SW] DTS-62NV UDZSF-3.6B UDZSF-3.6B UDZSF-3.6B UDZSF-3.6B DOWN UDZSF-3.6B AUDIO UDZSF-3.6B LED_OR1 LED_BR1 PWR_SW AUDIOR- AUDIOR+ AUDIOL- AUDIOL+ Blue LED 7100-E15N-00C 3802Y -E002-NNN/RoHS ORANGE LED <Variant Name> 　　筿　　　Τ　そ　 3802Y -E002-NNN/RoHS Title OSD KEY PAD DWG NO DATE APPROVED CHECKED DESIGNER DRAWER SHEET artey Eric...

  • Page 45: Pcb Layout Diagrams

    9. PCB Layout Diagrams 9.1 Main Board...
  • Page 47 9.2 Power Board...
  • Page 49 9.3 Key Board...

  • Page 50: Exploded Diagram And Spare Parts List

    10. Exploded Diagram and Spare Parts List 10.1 EPL...
  • Page 51 Exploded Parts List Item Description Part Number Q'ty BEZEL PANEL MAIN BOARD- CBPC9RLVSQN POWER BOARD SCREW 0M1G 330 4120 COVER AD REAR COVER SCREW 0M1G1740 15 47 CR3 HINGE ASS'Y SCREW 0M1G 330 6 47 CR3 VESA-SUPPORT-PLATE PLATE LOCK SCREW 0M1G1740 8120 POWER KEY BOARD KEY PAD POWER...
  • Page 52 MANUAL(CD) 10.MANUAL (CD) 11.QSG Item Description Part Number Q'ty LCD MONITOR PE BAG 22 LCD CARTON EPS(BOTTOM) EPS(TOP) POWER CORD D-SUB CABLE AUDIO CABLE SIGNAL CABLE DVI GREATLAND MANUAL...
  • Page 53 10.2 Spare Parts List TC9MRLDBDWVSDN Location Part Number Description Remark 019G6014 1 TIE FOR STRAP 023G3178709 4A VSC17-LCD FRONT LOGO 023G3178709 6A BIRD LOGO 040G 581 26704 SHIPPING LABEL 041G 68508 A CONTROL CARD 044G9003 5 CORNER PAPER 044G9003 90 CORNER PAPER 050G 600 1 W WHITE STRAP...
  • Page 54 KEPC9QE7 KEY BOARD 033G8019 6T H FPC CONN. 1.0MM 6P 077G 602 2 DT CMO TACT SWITCH DTSA-62NV 077G 602 2 DT CMO TACT SWITCH DTSA-62NV 077G 602 2 DT CMO TACT SWITCH DTSA-62NV 077G 602 2 DT CMO TACT SWITCH DTSA-62NV 077G 602 2 DT CMO TACT SWITCH DTSA-62NV 715G3064 1...
  • Page 55 057G 759 2A TANSISTOR 2N7002 SOT-23 057G 763 59 FET BSS84 −0.13A/−50V SOT-23 057G 763 59 FET BSS84 −0.13A/−50V SOT-23 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 R136 061G0402100 0F RST CHIPR 100 OHM +-1% 1/16W...
  • Page 56 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 R137 061G0402152 RST CHIP 1K5 1/16W 5% 061G0402220 RST CHIPR 22 OHM +-5% 1/16W 061G0402220...
  • Page 57 061G0402472 RST CHIPR 4.7 KOHM +-5% 1/16W 061G0402472 RST CHIPR 4.7 KOHM +-5% 1/16W 061G0402472 RST CHIPR 4.7 KOHM +-5% 1/16W 061G0402472 RST CHIPR 4.7 KOHM +-5% 1/16W 061G0402472 RST CHIPR 4.7 KOHM +-5% 1/16W 061G0402472 RST CHIPR 4.7 KOHM +-5% 1/16W 061G0402472 RST CHIPR 4.7 KOHM +-5% 1/16W 061G0402472...
  • Page 58 065G0402120 31 CAP CHIP 0402 12P 50V NPO 065G0402220 31 CHIP 22PF 50V NPO 065G0402220 31 CHIP 22PF 50V NPO 065G0402220 31 CHIP 22PF 50V NPO 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...
  • Page 59 033G8019 2JCMO CONNECTOR 1.0PITCH SMT 15P 033G8032 2C CONNECTOR 033G8032 2C CONNECTOR 077G 606 7 DT CMO TACT SWITCH DTSA-62NV 081G 63O 1 GP LED GPTS0603OC3-PB 081G0603 B GP LED GPTS06033BC1 GP 093G 39S 94 T DIODE UDZSNP3.6B 200MW/3.6V SC-76 093G 39S 94 T DIODE UDZSNP3.6B 200MW/3.6V SC-76 093G 39S 94 T...
  • Page 60 Q41G780070974A VISTA INSERT Q45G2007M0101A PE BAG Q70G2201709 3A VG2230WM CD 040G 58162435A P/N LABEL FOR MANUAL PE BAG N40G0001968 2A S/N LABEL 7741513161 N40G000196855A CARTON LABEL N40G000196867A S/N LABEL FOR VIEWSONIC E750 750GLM220KZ1J2M0VS PANEL A220Z1-002 SM0Z12AD01 NB CMO 2nd Source...

  • Page 61: Recommended Spare Parts List

    11. Recommended Spare Parts List...

  • Page 62: Different Parts List

    12. Different Parts List Diversity of TC9MRLDKDWVSDN compared with TC9MRLDBDWVSDN Location Part Number Description Remark E08901 089G402A18N CX POWER CORD 2nd source E08901 089G402A18N IS POWER CORD/32-D022438 2nd source E08901 089G402A18N YH POWER CORD(32-D022438) Q41G780070961A CAUTION CARD Q41G780070975A WALL MOUNT INSERT PAGE Q41G780070976A MEXICO LIMITED WARRANTY FOR USA...
  • Page 63 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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