Service Manual ViewSonic N4261w-1M Model No. VS11439-3M 42” LCD TV (N4261w-1M_SM Rev. 1a Mar. 2007) ® ViewSonic 381 Brea Canyon Road, Walnut, California 91789 USA - (800) 888-8583...
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.
If liquid crystal enters your eyes or mouth, you should immediately rinse with clean water and consult a doctor. Important safety information 1. Read all these instructions. ViewSonic Corporation N4261w-1M Confidential - Do Not Copy...
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• Liquid is spilled into the television. • The television is exposed to rain or water. • The television does not operate as the user manual describes. In this case, use only ViewSonic Corporation N4261w-1M Confidential - Do Not Copy...
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An explanation of the service mode to enable you to adjust the internal settings A step by step guide to assembly and disassembly of the product A complete parts list for the product An exploded diagram of the product Pictures of the printed circuit boards ViewSonic Corporation N4261w-1M Confidential - Do Not Copy...
PC, HDMI 1280 x 1024 @ 60 Hz(VESA) PC, HDMI 1360 x 768 @ 60 Hz PC,HDMI 480 I 60 Hz(NTSC) AV/S,HD 480 P 60 Hz(DVD) HDMI 720 P 60 Hz HDMI ViewSonic Corporation N4261w-1M Confidential - Do Not Copy...
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Warning : Do not set the graphics card in you computer to exceed these refresh rates. Doing so may result in permanent damage to the LCD. Note : Product specifications are subject to change without notice. ViewSonic Corporation N4261w-1M Confidential - Do Not Copy...
GREEN shall apply during all operational states (i.e. with image present), LED light off when the product in stand-by mode. Red light apply when no PC/HDMI signals in PC/HDMI mode after 15 sec. 8. SPEAKERS Audio output. ViewSonic Corporation N4261w-1M Confidential - Do Not Copy...
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U18 PW328 CPU will output a Hi level to trigger other IC to reset when +5V, +12V and +24V start to work. Then Firmware starts to read the data of U33 via U29 PWM2030 CPU and transmits data via I2C BUS and sends control signal to run the TURN ON procedure. ViewSonic Corporation N4261w-1M Confidential - Do Not Copy...
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The signal of Backlight Adjust which output from PWM I/O port of U18 PW328 sending a PWM signal to U42 C491 converged into a DC signal then forward to Inverter of Panel via 12 pin of J11 to adjust the brightness of Backlight. ViewSonic Corporation N4261w-1M Confidential - Do Not Copy...
Hi=MUTE AUDIO OUTPUT THE THREE BIRDS LOGO The ViewSonic Logo will show up in 6 seconds after program execution, then disappeared. All the POWER ON procedure will be finished when AMP Relay sound be heard and screen displayed. ViewSonic Corporation...
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Tuner TUV1236D receive the signal come from ATSC signal Selects desired channel and converts analog signal into MPEG Transport Stream via Tuner TS1( Transport stream TS1DATA0-TS1DATA7) bus into U29 PWM2030 to separates MPEG video and AC3 digital audio. ViewSonic Corporation N4261w-1M Confidential - Do Not Copy...
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100_NC I2S1SDI MPEG_DI1 P{9} RXD0 Small TP39 I2S2WSI TXD0 Small TP40 I2S2CKI RTS0 Small TP42 I2S2SDI CTS0 I2S2WS0 R293 I2SWSO RXD1 I2S2CK0 R294 I2SCKO TXD1 I2S2SD0 R295 I2SSDO R362 P{12} PWSPDIF SPDIFO ViewSonic Corporation N4261w-1M Confidential - Do Not Copy...
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TX49 core, the unified memory allows all internal decoders can share data via VMMS ( Virtual Multi-port which reduces external memory types and Memory System ,Controls external DDR-SDRAM 64 bits) , capacities. ViewSonic Corporation N4261w-1M Confidential - Do Not Copy...
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The digital data output is also compatible with the SPDIF format output. The PWM2030 can externally input both audio and video digital data. The PWM2030 has a function which mixes the input data internally then outputs them. ViewSonic Corporation N4261w-1M Confidential - Do Not Copy...
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ViewSonic Corporation N4261w-1M Confidential - Do Not Copy...
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ViewSonic Corporation N4261w-1M Confidential - Do Not Copy...
COMPONENT 2 or connect to other sources such as 720P, 480P, 480i…..,etc.) Step 2: WHITE BALANCE ADJUSTMENT OF Component— Repeat the above mentioned step 1 to 2 Press to scroll to PE328 FE ADC page 2-3 options ViewSonic Corporation N4261w-1M Confidential - Do Not Copy...
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1. RS232 interface built in PC. 2. RS232 cable 3.Pixelworks Flash Upgrader software (3) Connecting method: connecting RS232 interfaces between PC and TV set. Firmware writing procedure: Execute Pixelworks Flash Upgrader software Select Baud Rate by 115200 ViewSonic Corporation N4261w-1M Confidential - Do Not Copy...
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Once download process was finished system have to take at least 30 seconds updating new firmware. Please make sure power was supplied without interruption; otherwise system will shut down. System will restart automatically after finishing writing process. ViewSonic Corporation N4261w-1M Confidential - Do Not Copy...
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Press [WIDE] will switches in several screen mode :AUTO,4:3,16:9,14:9) SCREEN Press [Display] will show the input signal source Press [MUTE] to disable the audio output AUDIO Press [MTS/SAP] to switch SAP,MONO,STEREO mode. ViewSonic Corporation N4261w-1M Confidential - Do Not Copy...
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Press to check the BAR slide of Channel setting : Edit Channels Press to check the BAR slide : Password-Film Blocking-TV Blocking V-chip Press to set the setting ViewSonic Corporation N4261w-1M Confidential - Do Not Copy...
LCD and the AVC System, or unplug the AC cord for 1 to 2 minutes, then replug again. Power is cut off suddenly Is the sleep timer set? ViewSonic Corporation N4261w-1M Confidential - Do Not Copy...
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Connects to your ATSC antenna or coaxial cable from a local TV Picture is cut off/with sidebar screen Is the image positioned correctly? Are screen mode adjustments such as picture size set correctly? Figure 1 SMPS no power output ViewSonic Corporation N4261w-1M Confidential - Do Not Copy...
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Figure 2 . NO Video image Figure 3 . NO Audio output Sound ViewSonic Corporation N4261w-1M Confidential - Do Not Copy...
CVBS SVideo/CVBS Digital Port 1 SVid Digital 24-bit RGB/YUV Port 0 TV Video/CVBS AV3(YPbPr) COMPONENT1 RCA x3 DISPLAY Analog AV4(YPbPr) Port COMPONENT2 RCA x3 PW328 D_SUB R.G.B.H.V P8-P11 SDRAM SDRAM 256Mbit 256Mbit ViewSonic Corporation N4261w-1M Confidential - Do Not Copy...
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AV4PR C126 C127 100K 100U CON5 100K V5HDTV C128 SBK16-102 Component 2 R C129 100K 100K HSP-242V2 V5HDTV C130 BOTTOM VIEW WHITE SBK16-102 Component 2 L C131 100K HSP-243V2 HSP-242V2 BOTTOM VIEW ViewSonic Corporation N4261w-1M Confidential - Do Not Copy...
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LAYOUT: Place xtal 180_NC LAYOUT: Place resistor close as possible to chip close as possible to chip P{9,12,14} R0PWR5V 4.7K R0PWR5V P{9,12,14} R1PWR5V V18RXVCC R1PWR5V V18RX V18RX V18RXVCC V18RX AIC1117-1.8-SOT223 PBY20-221 PBY20-221 100U 100U ViewSonic Corporation N4261w-1M Confidential - Do Not Copy...
2.Pull down or out the pedestal. 3.Unscrew and remove the main board cover. REAR Cover Pedestal 5.Unscrew and remove the LCD connector shield plate . 6.Unscrew and remove the VGA connector . Main Board Cover Speaker ViewSonic Corporation N4261w-1M Confidential - Do Not Copy...
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12.Unscrew and remove the LED board. 13.Unscrew and lift out the LCD panel. 14.Remove the panel support screws from the LCD panel. 15.Remove the panel supports from the LCD panel carefully. Panel rear cover ViewSonic Corporation N4261w-1M Confidential - Do Not Copy...
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2 screws. When connecting speaker cables, make sure that the marked speaker cable (black) is attached to the black terminal and the unmarked cable (white) is attached to the red terminal. ViewSonic Corporation N4261w-1M Confidential - Do Not Copy...
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11.3 Handing and placing Methods ViewSonic Corporation N4261w-1M Confidential - Do Not Copy...
Remark 2: All revised RSPLs with newly added items or any change made should be highlighted and correlated with the ECN/ECR approved by ViewSonic Corporation. This is to eliminate repeated cross checks of each item between this version and prior versions.
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BOM LIST ( N4261w-1 ) ViewSonic Model Number: VS11439-3M Rev: 1a Serial No. Prefix: QKR Item ViewSonic P/N Ref. P/N Description Location Universal number# Q'ty FirmwareTA4242AWV1.00M0124 TA4242AWV1 7TA4242A9310 PE BAG ASSY 7TA4242A0110 SET ASSY P-00008373 7024824009211 EPE BAG;TA4242AW,(A) P-00008370 7024803022811 CARTON;TA4242AW,(C)
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Item ViewSonic P/N Ref. P/N Description Location Universal number# Q'ty 7024503025011 SUPPORT HENGE;TA4242AW,(B) 7024403013011 BOTTOM BASE;TA4242AW,(A) C-00008347 7024503024911 BASE SUPPORT SHEET;TA4242AW,(B) HW-00003604 780XX40002311 SCREW(MSF4X12);TL3001FM,(F) 780XX40002011 SCREW;TBF M4*10,(F) 7024614014311 CUSHION LEG;TL3001FM,(H) M-00005479 7024614017111 PIN;TL3001FM,(A) 7TA4242A1210 FRONT PANEL ASSY -------- C-00008345 7024303012011 FRONT PANEL;TA4242AW,(A)
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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) ViewSonic Corporation N4261w-1M Confidential - Do Not Copy...