Service Manual ViewSonic VX1935wm-1 Model No. VS11307 19” Color TFT LCD Display (VX1935wm-1_SM Rev. 1a Sep.
Copyright Copyright © 2006 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.
TABLE OF CONTENTS 1. Precautions and Safety Notices 1 2. Specification 4 3. Front Panel Function Control Description 8 4. Circuit Description 13 5. Adjustment Procedure 14 6. Troubleshooting Flow Chart 32 7. Recommended Spare Parts List 34 8. Exploded Diagram and Exploded Parts List 37 9. Block Diagram 40 10. Schematic Diagrams 41 11.
1. Precautions and Safety Notices 1. Appropriate Operation (1) Turn off the product before cleaning. (2) Use only a dry soft cloth when cleaning the LCD panel surface. (3) Use a soft cloth soaked with mild detergent to clean the display housing. (4) Disconnect the power plug from AC outlet if the product is not used for a long period of time. (5) If smoke, abnormal noise, or strange odor is present, immediately switch the LCD display off. (6) Do not touch the LCD panel surface with sharp or hard objects.
. LCD Module Handling Precautions 5.1. Handling Precautions (1) Since front polarizer is easily damaged, pay attention not to scratch it. (2) Be sure to turn off power supply when inserting or disconnecting from input connector. (3) Wipe off water drop immediately. Long contact with water may cause discoloration or spots. (4) When the panel surface is soiled, wipe it with absorbent cotton or other soft cloth. (5) Since the panel is made of glass, it may break or crack if dropped or bumped on hard surface.
5.2 Handling and Placing Methods Correct Methods: 1.Take out the monitor with cushions Incorrect Methods: 1.Taking out the monitor by grasping the LCD panel. That may cause ”Mura” 2.Only touch the metal frame of the LCD panel 2.Surface of the LCD panel is pressed by or the front cover of the monitor. Do not fingers and that may cause ”Mura”. touch the surface of the polarizer. 3.Place the monitor on a clean and soft foam pad. ViewSonic Corporation 3.Placing the monitor on foreign objects.
2. Specification FEATURES Size Luminance (Typ) TFTLCD PANEL Contrast Ratio (Typ) *1 1st Colors HSD 1 HSD190MGW1-A Response Time * Viewing Angle (H/V) Recommend resolution Analog Input Signal Digital Separate Sync Sync Composite Sync Compatibility Sync on Green PC Compatibility Power Mac TV Box (NextVision 6) Power Voltage AC 100-240V, 50/60Hz Power On Mode(Max) Consumption Off Mode (Max) Audio 1.5W / THD 0.
Vibration There should be no audible vibration resonance at volume=100%(input signal within 1.0 Vrms) Screen image There should be no affect on the screen image stability under any conditions Lime Green pantone # 577C Connector PC99 requirement Audio in Cable type / length 3.5mm stereo cable / 1.
ELECTRICAL REQUIREMENT Horizontal / Vertical Frequency Horizontal Frequency Vertical Refresh Rate Maximum Pixel Clock Sync Polarity 24 – 80 kHz 50 – 75 Hz. 135 MHz Independent of sync polarity. Timing Table fH fV Dot clockSync polarity Mode Resolution (KHz) (Hz) (MHz) H V A 1 640×350 @70Hz VGA31.46970.087 25.175 P N 800 Horizontal (dot) B C D 96 48 640 E 16 O 449 Vertical (line) P Q R S 2 60 350 37 2 640×350 @85Hz VGA37.86185.080 31.500 P N 832 64 96 640 32 445 3 3 640×400 @60Hz VGA31.
fH Mod e Resolution 37 1280×960 @75Hz 38 39 41 42 43 44 45 46 47 48 49 50 1280×1024 @50Hz SXGA 1280×1024 @60Hz SXGA 1280×1024 @72Hz SXGA 1280×1024 @75Hz SXGA 1360×768 @60Hz WXGA 1400×1050 @50Hz WXGA + 1400×1050 @60Hz WXGA + 1400×1050 @60Hz WXGA + 1400×1050 @75Hz WXGA + 1440×900 @60Hz WXGA + 1440×900 @60Hz WXGA + 1440×900 @75Hz WXGA + fV Dot Sync clock polarity Horizontal (dot) Vertical (line) (KHz) (Hz) (MHz) H 74.592 74.443 128.895 P V A B C D E O P Q R P 1728 136 224 1280 88 1002 3 36 960 S 3 52.
3. Front Panel Function Control Description 3.1 Short Cuts Function from the button(s) [1] Main Menu [2] Input toggle (Analog or Digital) [▼] or [▲] To immediately activate Brightness /Contrast menu. Hot Keys for Function Controls [▼]+ [▲] Recall Contrast or Brightness while in the Contrast or Brightness adjustment, or recall both of Contrast and Brightness when the OSD is not on. [1] + [2] Toggle 720x400 and 640x400 mode when input 720x400 or 640x400 mode [1] + [▼] + [▲] White Balance.
3.3 OSD Menu Controls Select the menu items shown below by using the up [▲] and down [▼] buttons. z Main Menu : z Auto Image Adjust : To automatically adjust H./ V. Position, Phase adjust and Clock adjust. REMARK: There may need to select “Fine Tune” function on “Manual Image Adjust” to optimized Performance for various VGA tolerance. z Contrast / Brightness : To adjust the Contrast of the video and the backlight currency.
z Input Select : To select the signal sources of the Analog or Digital. z Audio Adjust : To adjust the audio volume and mute. z Color Adjust : To select the color temperature sRGB, 9300°K, 7500°K ,6500°K, 5400°K or user color.
z Information: To display the data about Horizontal / Vertical frequency, Pixel clock, Resolution , Model number and Serial No. of the monitor. z Image Adjust: Horizontal Size: To adjust the horizontal pixel clock of the video. H./V. Position: To adjust the horizontal and vertical position of the video. Fine Tune: To adjust the delay time of data and clock. Sharpness: To select the picture sharpness of display.
z Setup Menu:: Language Select: To select one of eight languages.(English, French, German, Italian, Spanish, Finnish, Japanese, Traditional Chinese, and Simplified Chinese) Resolution Notice: Enable (on) : OSD will notify the best picture quality resolution change the resolution to 1440 x 900 OSD Position: To set OSD position. OSD Timeout: To set the displaying time of OSD. OSD Background :To select video background brightness. z Memory Recall: Restore default settings of Clock, H./V.
4. Circuit Description 1. Power supply (DC/DC Converter) This brick convert is the 110-220AC input voltage to 12V AND 5V output for inverter, audio, panel and system controller use. It consists of a PWM IC (CM0565R, U101) 2. Scaling controller The ADC is to convert RGB analog signal to digital signal that scaling chip can acknowledge. The HSYNC input receives a logic signal and provides the frequency reference for pixel clock generation.
5. Adjustment Procedure 1. Function Test 1.1 Product - 19” LCD Monitor 1.2 Test Equipment - Color Video Signal & Pattern (or PC with WXGA resolution and a sound card) 1.3 Test Condition Before function test and alignment, each LCD Monitor should be run-in and warmed up for at least 30 minutes with the following conditions: (a) In room temperature, (b) With full-white screen, RGB, and Black (c) With cycled display modes, 640*480 (H=43.27kHz, V=85Hz) 800*600 (H=53.7kHz, V=85Hz) 1024*768 (H=68.
5 6 Screen Uniformity & Flicker Dead Pixel/Line 7 White Balance Full White Should be compliant with the spec. The numbers of dead pixels should be compliant with the spec. The screen must have the pure white and black pattern, no other color. White Screen & Dark Screen White & Black Pattern Figure 7 Figure 7, 8 Figure 9 Fine Line Morie Pattern (Figure1) Gray Scale Pattern (Figure2) Horizontal & Vertical Thickness Pattern (Figure 3) R. Color Pattern (Figure 4) G. Color Pattern (Figure5) B.
Full White Patter (Figure 7) Dark Screen Pattern (Figure 8) Black-White Pattern (Figure 9) 1.5 Function Test and Alignment Procedure 1.5.1 Memory Recall You should do “Memory Recall” first. This action will allow you to erase all end-user’s settings and restore the factory defaults. 1.5.2 Auto Image Adjust Please select and enter “Auto Image Adjust” function on Main Menu to see if it is workable. The “Auto Image Adjust” function is aimed to offer a better screen quality by built-in ASIC.
Test Signal: 1440x900@60Hz Test Pattern: Line Moire Pattern - Check and see if the image has noise and focus performs well. Eliminate visual line bar. image - If not, readjust by the following steps: (a) Select and enter “Fine Tune” function on “Manual Image Adjust” to adjust the to eliminate visual wavy noise. (b) Then, select and enter “Sharpness” function to adjust the clarity and focus of the screen image. 1.5.
1.5.13 Check for Secondary Display Modes Test Signal: Analog / Digital: 640*350@70Hz 640*480@60HZ / 75HZ 720*400@70Hz 800*600@60HZ / 75HZ 832*624@75Hz 1024*768@60HZ / 75HZ 1280*1024@60 / 75Hz - Normally when the primary mode 1440x900@60Hz is well adjusted and compliant with the specification, the secondary display modes will be great possible to be compliant with the spec. But we still have to check with the general test pattern to make sure every secondary is compliant with the specification. 1.5.
ISP tool Use 12V adapter ISP connect method z ISP Download program procedure ¾ Hardware Connect status: ViewSonic Corporation Confidential - Do Not Copy 19 VX1935wm-1
¾ Version update 1. Check : Monitor model 2. Check : Firmware version Factory Mode : a. Hold on [2] + [ ] with signal (hold for 3 seconds) into the factory mode. b. Press [ ] key exit factory mode. 3. Update final firmware version Example : ( VX1935WM follow the same setting procedure ) 1. Check : Monitor model : HC154 2. Check : Firmware version : HC154_AL_150MX17A01R30.2 (ps) 3. Update final firmware version : HC154_AL_150MX17A01R30.3 (ps) HC154_AL_150MX17A01R30.
Factory Mode : a. Hold on [2] + [ ] with signal (hold for 3 seconds) into the factory mode. b. Press [ ] key exit factory mode. 3. Check : Panel type. 4. Change Panel. 5. Update final firmware version. 6. Update EDID code. Example : ( VX1935WM follow the same setting procedure ) 1. Check : Monitor model : HC154 2. Check : Firmware version : HC154_AL_150MX17A00R30.2 (ps.1) 3. Check : Panel type : HSD150MX17A00. 4. Change Panel. (ps.2) (ps.1) HC154_AL_150MX17A00R30.
¾ Change Scaler Board (Version update) 1. Check : Monitor model 2. Check : Firmware version Factory Mode : a. Hold on [2] + [ ] with signal (hold for 3 seconds) into the factory mode. b. Press [ ] key exit factory mode. 3. Change scaler board. 4. Update final firmware version. 5. Update EDID code. Example : ( VX1935WM follow the same setting procedure ) 1. Check : Monitor model : HC154 2. Check : Firmware version : HC154_AL_150MX17A01R30.2 (ps) (ps) HC154_AL_150MX17A01R30.
¾ Mstar scaler ISP function 1. Enforce Mstar ISP_Tool program. 2. After Enforcing Mstar ISP_Tool Program, open Utility Window. 3. Enforce Mstar ISP Utility Window's Connect function, and Device Type's Dialog window will be opened ,then press "Sure " on Dialog window. 4. Enforce Mstar ISP Utility window 之 Read function.
5. Enforce Mstar ISP Utility window's "Read" , and choose the path and the file of Binary code. 6. Choose the path and file of Binary code ,and Program Bin Ready Dialog window will be opened, then press "Sure" on Dialog window. 7. Enforce Mstar ISP Auto function of Utility window.
8. Enforce Mstar ISP Utility window "Run"and write in the data . 9. After writing in the data , Enforce Dis Connect function of Mstar ISP Utility window and the burn in procedure will be completed.
¾ 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 monitor, you have to do the DDC key in.
Step 2 : Modify the column of Week of Manufacture and Year of Manufacture and ID serial Number then press “2B” button for changing serial number data. Step 3 : You will see the result as follows.
¾ Packing For Shipping And Disassembly Procedure Packing For Shipping 1. Packing Procedure 1.1 Put the monitor in the PE bag and seal the bag with tape. (Figure 1 ~ 2) (Figure 1) (Figure 2) 1.2 Put the cushions on the monitor. (Figure 3) 1.3 Put the Cables in the PE bag. (Figure 4) Audio cable DVI cable (Figure 3) D-Sub cable Power code (Figure 4) 1.4 Place the monitor into the carton and then put all the accessories into the carton. At last, close the carton and seal it with tape.
Disassembly Procedure 1. Disassembly of Stand unit from Monitor 1.1 Detach Base Unit from the monitor. 1.2 Remove the ARM cover. 1.3 Unfasten six screws to remove the ARM. 2. Disassembly of Front Cover and Rear Cover 2.1 Unscrew ten screws to remove Rear Cover.
2.2 Unfasten four screws to remove Hinge folder bracket. 2.3 Unfasten six screws to remove the D-sub / DVI connector and Power socket. 2.4 Unfasten five screws and disconnect Inverter cables from panel to remove the shielding.
2.5 Unfasten four screws to remove the Keypad board. 2.6 Unfasten eight screws to remove Power Inverter board and D-sub/DVI connect board. Power Inverter Board D-sub/DVI connect board Cables 2.7 Remove the Front Bezel.
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Q6 1 Display panel with missing color 2 3 Please check signal cable if connected properly and check all pins are good without bent Please check if panel wire is loose connection or not Please change panel Q7 Please change board (ps) Audio output error P/I/A (ps) : P/I/A board Î Power/Inverter/Audio board ViewSonic Corporation Confidential - Do Not Copy 33 VX1935wm-1
7. Recommended Spare Parts List RECOMMENDED SPARE PARTS LIST (VX1935wm-1) ViewSonic Model Number: VS11307 Serial No. Prefix: Q8Y Item 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 Description Power Cord - 250V/10A 1.8M 3C BLK (China) Accessories: Power Cord - 125V/10A 1.8M 3C BLK (USA) Power Cord - 250V/10A 1.
BOM LIST ( VX1935wm-1 ) ViewSonic Model Number: VS11307 Serial No. Prefix: Q8Y Rev: 1a Item 1 ViewSonic P/N A-00008042 Ref.
Item ViewSonic P/N 57 N/A 58 N/A 59 60 Ref. P/N 39-VX193500G000 Description VX1935 Key Board PCB Ver : 2.0 Location Universal number# Q'ty 1 34-04170017G000 AL Foil W40*L200*T0.1mm 1 N/A 33-R3910506G000 CABLE STEREO PHONE(JHEN VEI) 1 N/A 33-R3910503G000 DVI CABLE 1800MM(JHEN VEI) 1 61 N/A 33-R3910501G000 CABLE SIGNAL D/15P-15P(M)1800MM-JHEN VEI 1 62 A-00008038 33-E3980005G000 PWR CORD CHN 250V/10A 1.
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EXPLODED PARTS LIST (VX1935wm-1) ViewSonic Model Number: VS11307 Rev: 1a Serial No. Prefix: Q8Y Item 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 ViewSonic P/N E-00008004 E-00008005 N/A N/A N/A N/A N/A C-00008005 B-00008074 N/A PL-00008001 N/A N/A N/A N/A N/A C-00008107 C-00008108 PL-00008024 C-00008109 N/A N/A PL-00008002 N/A N/A N/A N/A E-00008073 ViewSonic Corporation Ref.
PACKING PART LIST (VX1935wm-1 ) ViewSonic Model Number: VS11307 Rev: 1a Item 1 2 3 4 5 6 7 8 9 10 11 12 13 ViewSonic P/N N/A N/A N/A N/A A-00008004 P-00008005 P-00008004 P-00008086 P-00008088 DC-00008099 P-00008085 DC-00008098 N/A ViewSonic Corporation Ref.
9. Block Diagram AC INPUT 100V~240V SW Power 12V 5V AUDIO U501 TDA7496 INVERTER MP 1038EY SPEAKER BL_EN BL-BRIGHT AUDIO INPUT VDD+5 DC-DC U401-1084-33PM 3.3V PANEL DISPLAY SCALAR U1 TSUM17AK OSC 12M Y1 DC-DC U402-1084-18PM 1.
10. Schematic Diagrams VCC Vin R2 C7 C24 G GND R5 D ON/OFF IC_VCC C5 S C31 Q1 IC_VCC R41 D15 CN1 LV1 C35 CN1B R6 R40 R9 R12 R10 R7 Q3 DBRT C8 C6 C25 R11 R19 14 13 12 8 7 6 C2 C4 R4 C3 5 C18 C21 4 1 D1 OUTL UGL VCCL BRC LGL LCC PGL LCS BTR FT PRR AG OUTR UGR LV 2 LV1 PRL COMP 3 R43 ENSYNC BRS 9 C1 BTL DBRT 10 R3 LOK ABRT 11 R1 FB1 U1 VCCR LI LGR SI PGR C29 3 4 C32 23 LV2 C30 22 T1 6.
R260A F101 LF101 CN100 TH101 2 C260 2 INVERTER BD101 2 R102 R112 + 3 4 CY102 C261 T101 1 +12V + 11.12 C115 3 1 C114 ZD110 4 CX101 FG VA101 CY101 R101 N R260B 1 3 1 4 L LF102 R262 C264 ZD260 R263 D260 R264 R113 3 CY104 R114 R123 R122 R121 R120 D240 D110 U101 R124 6 Ilimit + R240A GND R240B L120 6 5 C243 C242 RTN 9.10 PC201B ZD121 R234 1 4 C124 + +5.2V/3A C240 FB Vcc + R235 R230 C123 ZD120 3 D120 2 + C241 4 NC C244 R241 5 +5.
+12V + C501 U501 15 16 8 C505 C502 OUTL 1 2 3 4 5 R502 9 C508 FB503 C509 6 11 C510 R504 R505 OUTR VOLUME STBY SVR VAROUT_R VAROUT_L 14 FB502 SPL SPR FB504 10 SPL SPR C504 7 C511 5 MUTE GND GND GND GND GND GND GND 12 INR 17 + VS INL + CN501 4 C507 VS R501 NC FB501 + C512 R506 R507 1 2 3 13 18 19 20 C503 R508 R509 AUDIO_STBY AUDIO_STBY AUDIO_MUTE AUDIO_MUTE +5V R503 R510 R511 Volume R512 Q501 C506 Volome ViewSonic Corporation Model Title Date View
VCTRL 1.8V R2 R3 3.3V 1/16W FB2 1 C3 3.3V C5 + 600 OHM 3.3V C13 FB5 VMPLL 600 OHM C15 0.1uF/16V 0.1uF/16V C16 C18 0.1uF/16V0.1uF/16V VDDC L8 L9 1 1 L2 L7 L3 L11 L12 L10 80ohm 80ohm 80ohm 80ohm 80ohm 80ohm 80ohm 80ohm H5 H6 1 H3 1 1 H2 H4 1 H9 1 H10 1 1 H8 PWR_EN 1/16W 1/16W 1/16W 1/16W R52 R53 0.1uF/16V R63 0 1/16W U3 100 100 1/16W 1/16W VCC WP SCL SDA A0 A1 A2 GND 1 2 3 4 AT24C16N-10SC-2.
iris suggestion 2005/01/10 C116 0.1uF/25V(0603) C114 0.1uF(0402) MAX1748 C123 Q103 MMBT3906 13K (0603) R120 1 0.1uF(0603) R121 C125 R117 15K (0603) VGH_M C124 NC (0603) 2 VGH_M Confidential - Do Not Copy 45 BAT54WSPT 0.1uF(0402) 2 VGH(23V) VGH 1/16W R112 VGH C122 348K(0402) 1% FBP R113 20K(0402) 1% 0.1uF(0402) CPV VDDA CPV 3.
iris suggestion 2005/01/10 C204 C207 0.1uF/16V(0402) C206 0.1uF/16V(0402) C208 VCOM V1 V2 V3 V4 V5 V6 V7 V1 V2 V3 V4 V5 V6 V7 V8 V9 V10 V11 V12 V13 V14 V[8..14] V8 V9 V10 V11 V12 V13 V14 V8 V9 V10 V11 V12 V13 V14 原本就是5pin的IC,請confirm XAO U202 178 56.2 45.3 69.8 162 26.7 169 95.3 54.9 57.6 182 C222 0.1uF/16V 1uF/16V(0805) C221 0.1uF/16V 1uF/16V(0805) C220 0.1uF/16V 1uF/16V(0805) C219 0.1uF/16V 1uF/16V(0805) C218 0.1uF/16V 1uF/16V(0805) C217 0.1uF/16V 1uF/16V(0805) C216 0.
2TP2C 2TP2B 2TP2A VCOM 3S720 3TP2C 3TP2B 3TP2A X_IC 3.3V L302 B0603/300 0402 TYPE Closed to X1~X6 0402 TYPE Closed to X1~X6 X_IC VDDA_X V[8..14] V8 V9 V10 V11 V12 V13 V14 3V3_X GB[0..5] BB[0..5] GB0 GB1 GB2 GB3 GB4 GB5 BB0 BB1 BB2 BB3 BB4 BB5 3V3_X VCOM 4S720 4TP2C 4TP2B 4TP2A 5S1 5RPI 5RPO STH2_B 3V3_X RB[0..5] DINV POL LP CLKBP CLKBN V[1..7] RB0 RB1 RB2 RB3 RB4 RB5 V1 V2 V3 V4 V5 V6 V7 VDDA_X V[8..14] V8 V9 V10 V11 V12 V13 V14 3V3_X GB[0..5] BB[0..
5V CN401 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 5V 5V BK_EN BK_PWM MUTE STBY VOLUME SW1_AUTO SW2_VOLSW3_POWER SW4_VOL+ SW5_MENU LED_B LED_G R403 R404 VOLUME R405 R406 22 22 3 BL_ON/OFF BL_ADJ 100 1/16W 47 1/16W 1/16W 1/16W VIN 1 VOUT 2 GND AIC1084-33PM C401 0.1uF SW1_AUTO SW2_VOLPWR SW4_VOL+ SW5_MENU PWR_LEDB PWR_LEDG 3.3V 3_3V U401 + C402 47uF/16V C403 0.1uF 0.1uF/16V 0.1uF/16V 0.1uF/16V 0.1uF/16V 0.1uF/16V 0.1uF/16V 0.1uF/16V D401 0.
0.22uF 1 2 C501 D501 BAV99 FB501 DDC_SCL DDC_SDA DDC_SDA 1 D505 UDZS5.6B DB_B- R505 100 1/16W R506 100 1/16W R507 56 B_IN- C504 2 C503 0.22uF D506 NC/UDZS5.6B D507 BAV99 3 DB_B+ SOGI FB502 DB_G+ CONN C502 NC 1 D504 UDZS5.6B 0.1uF B_IN+ 2 2 VGA_DET 1 DDC_SDA DDC_SCL UDZS5.6B 2 D502 VGA_VS 1/16W R503 1K 1/16W VGA_CONN DDC_VDD VGA_CONN VGA_HS 1/16W 56 1 DDC_VDD DB_RDB_R+ DB_GDB_G+ DB_BDB_B+ R501 75 1 D503 UDZS5.
5V R601 R602 D601 MLL5232B 5.6V CN601 DCLKDCLK+ DAT0DAT0+ DAT1DAT1+ DVI5V NC D602 MLL5232B 5.6V D603 MLL5232B 5.6V D604 BAT54C-GS08 R603 R604 NC DVI_DET C611 R611 0.1uF 10K DAT0+ DAT0DAT1+ DAT1DAT2+ DAT2- R605 R606 R607 R608 R609 R610 10 10 10 10 10 10 R612 8 7 6 5 DVI_B+ DVI_BDVI_G+ DVI_GDVI_R+ DVI_R- NC/0.1uF NC/0.1uF NC/0.1uF NC/0.1uF NC/0.1uF NC/0.1uF CONN NC/0.1uF 10 10 A0 A1 A2 GND 1 2 3 4 0.1uF NC NC DVI_SCL DVI_SDA 5V DVI_CLK+ DVI_CLK- R615 D612 BAV99 4.
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BOTTOM ViewSonic Corporation 52 Confidential - Do Not Copy VX1935wm-1
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SILKSCREEN-TOP ViewSonic Corporation 54 Confidential - Do Not Copy VX1935wm-1
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* Reader’s Response* Dear Readers: Thank you in advance for your feedback on our Service Manual, which allows continuous improvement of our products. We would appreciate your completion of the Assessment Matrix below, for return to ViewSonic Corporation. Assessment A. What do you think about the content of this Service Manual? Unit Excellent Good Fair Bad 1. Precautions and Safety Notices 2. Specification 3. Front Panel Function Control Description 4. Circuit Description 5. Adjustment Procedure 6.
