ViewSonic N3250w-1L Service Manual Download Page 60 | Manualshive

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8

.

2

.

DC TO DC

Power ON alive source

VFE_GND1

VFE_GND1

VFE_GND

LVDS_GND

DV18A

ASB18A

SB18A

DV33A

SB18

SB33A

ADCV18A

LVDS_GND

VFE_GND

AV33A

LVDS_GND

VFE_GND

LVDS_GND

AV18A

LVDS_GND

ADCV33A

VFE_GND1

3,5,8,19

VFE_GND

3,5,8,19

LVDS_GND

3,5,25

DV33B

VCC

5VSB

SB18A

ASB18A

DV18A

ASB33A

DV33A

SB33A

ADCV33A

SB33B

5VSB

SB33

ADCV18A

AV33A

AV18A

DV33B

5VDD

+

C113
100U/16V

CE050080

R518
1.15K 1%

R522
1.15K 1%

OUT

ADJ

IN

I105

AP1084K33

+3.3V Regulator

TO-263

3

2

1

4

L111

R121/0603

+

C120
100U/16V

+

C125

100U/16V

L102

R121/0805

C420
0.1U

C0603

L105

R60/0603

L107

R121/0805

R520
20K

+

C119
47U/16V

+

C128

100U/16V

ADJ

OUT

IN

I102

AZ1117/adj

3

2

1

4

+

C121
100U/16V

C116
0.1U

C783
0.1U

C0603

L109

R121/0805

I101

AP1510

1

8

2

7

3

6

4

5

FB

VSS

EN

VSS

OCSET

Output

VCC

Output

R515
3.9K

R517
3.65K 1%

R528

60.4 / 1%

+

C108
47U/16V

ADJ

OUT

IN

I104

AIC117-1.8V/SOT223

3

2

1

4

C127
0.1U

C134
0.1U

C129

0.1U

D152

SR54

1

2

+

C118
100U/16V

+

C122

220U/16V

L104

R121/0603

C782
0.1U

C0603

C126
0.1U

+

C115
100U/16V

R527

110 / 1%

C784
0.1U

C0603

C781
0.1U

C0603

L108

R60/0603

+

C131
100U/16V

+

C117
47U/16V

+

C124

100U/16V

C109
0.1U

C112
0.1U

C0603

I118

AP1510

1

8

2

7

3

6

4

5

FB

VSS

EN

VSS

OCSET

Output

VCC

Output

L219

30uH

0.7m/m

C780
0.1U

C0603

L103

R60/0603

+

C418
220U/16V

CE050080

+

C130

47U/16V

D153

SR54

1

2

C133

0.1U

L227

30uH

0.7m/m

L106

R121/0805

+

C111

47U/16V

C426
0.1U

C0603

R516
20K

+

C132
220U/16V

C114

0.1U

OUT

ADJ

IN

I103

AP1084K33

+3.3V Regulator

TO-263

3

2

1

4

L110

R60/0603

+

C110
220U/16V

CE050080

R521
3.65K 1%

C123

0.1U

R519
3.9K

ViewSonic Corporation

Confidential - Do Not Copy

N3250w-1L

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Summary of Contents for N3250w-1L

Page 1: ...Service Manual ViewSonic N3250w 1L Model No VS11335 1L 32 LCD TV N3250w 1L_SM Rev 1b_Aug 2008 ViewSonic 381 Brea Canyon Road Walnut California 91789 USA 800 888 8583 ...

Page 2: ...rchantability or fitness for any particular purpose 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 Trademarks Optiquest is a registered trademark of ViewSonic Corporation ViewSonic is a registered trademark of ViewSonic Corporation All other...

Page 3: ...cuit Description 18 5 Adjustment Procedure 21 6 Trouble Shooting Flow Chart 51 7 Block Diagram 55 8 Schematic Diagrams 56 9 PCB Layout Diagrams 76 10 Exploded Diagram And Exploded Parts List 82 11 Recommend Spare Parts List 85 ViewSonic Corporation Confidential Do Not Copy N3250w 1L ii 2 Specification 4 ...

Page 4: ... 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 6 Since CMOS LSI is used in this module take care of static electricity and insure human earth when handling 7 Do not open nor modify the Module A...

Page 5: ...y touch the metal frame of the LCD panel or the front cover of the monitor Do not touch the surface of the polarizer Surface of the LCD panel is pressed by fingers and that may cause Mura Take out the monitor with cushions Taking out the monitor by grasping the LCD panel That may cause Mura ViewSonic Corporation Confidential Do Not Copy N3250w 1L 2 ...

Page 6: ...Place the monitor on a clean and soft foam pad Placing the monitor on foreign objects That could scratch the surface of the panel or cause Mura ViewSonic Corporation Confidential Do Not Copy N3250w 1L 3 ...

Page 7: ... Streaking Sag or Smearing artifacts when driven by the specified video cards see 7 1 General Test Equipment in the primary mode VGA at 60 Hz and after user adjustment b No image drift or lose fine tune settings due to panel temperature change Note Panel performance characteristics MUST BE met in all display modes inputs at standard test conditions 1 RF Tuner RF tuner of this product shall be prov...

Page 8: ...ntegrated within this product The audio signals of this product shall comply with the specification listed in the following table Parameter Specification Phone Jack out Tuner Input Base band Input Speaker Power Output Max Rating 10 W x 2 at 10 T H D Distortion 10W x 2 at 10 T H D Distortion Speaker Impedance main spk 3 Ω 3 Ω Treble spk 5 2 Ω main spk 3 Ω 3 Ω Treble spk 5 2 Ω Line In Per Tuner Spec...

Page 9: ...1335 1M shall have a firmware version of V P01 Any changes revisions afterward shall also be pre approved by ViewSonic in written For VS11257 1M VS11335 1M its firmware shall have a built in frequency table for NTSC ATSC off air TV CATV Closed Caption and with MTS implementation All audio video and other output adjustments shall be performed by using an On Screen Display OSD via a Remote Control U...

Page 10: ...djust image size on Full Wide1 Wide2 Wide3 4 3 16 9 No scale Normal Enter Confirm the selection PIP POP Toggle to select PIP or POP function P Pos Adjust picture position of sub source during in PIP P size Adjust image size of sub source during in PIP Swap Switch between main screen and sub screen during in PIP or POP P input Sub source selection during in PIP or POP C C Displaying captions during...

Page 11: ...s Bird Logo Recess Artwork shall be provided and confirmed by ViewSonic Rear Label A label identifying the product name model serial number and FCC ID Logo shall be placed into the rear label recess located on the rear panel of the chassis Wall Mount 400mmx200mm VESA high hole n 6 pattren 6mm 1 0 pitch x 10mm long screw mounting kit not imcluded Figure 7 Sample Sample of textured color chips plast...

Page 12: ...select a control while in OSD menu CH Up Channel up when source is at TV or select a control while in OSD menu ENTER To highlight a control in OSD menu Power ON OFF button Power LED Indicator Remote Control Receiver 1 3 2 4 5 6 7 8 Note 1 Press VOL and MENU buttons at the same time to lock power button and press VOL and MENU buttons again to unlock it 2 Press VOL and VOL buttons at the same time t...

Page 13: ...PbPr output of A V device Composite Video input Connect this port to the composite video output of A V device Audio output Connect this port to your A V device with audio in RCA connectors or to audio ampliﬁer PC Audio input Connect this port to PC line out jack VGA signal input Connect this port to the VGA output of your PC HDMI Input Terminal Connect this port to the HDMI output of A V device He...

Page 14: ...Remote Control ViewSonic Corporation Confidential Do Not Copy N3250w 1L 11 ...

Page 15: ... Adjust sub screen window position 14 P SIZE Adjust sub screen window size 15 MUTE Volume mute ON OFF 16 TV Switch to TV when in any source 17 PICTURE Select picture modes 18 RETURN Return to previous channel 19 CH and CH Adjust Channel UP DOWN 20 FAV CH Select from preset Favorite Channels 21 MENU On Screen Display OSD menu ON OFF 22 WIDE Change the image size 23 PIP POP Toggle to enable disable ...

Page 16: ...st be set to the User mode Select through the Picture button on the remote control Audio Menu To set the audio quality and status Audio Menu is active in all but the VGA input source Bass To adjust bass Treble To adjust the treble Balance To adjust left and right audio balance Surround To enjoy a concert hall effect select On when stereo is playing Audio Out To control sound output ON OFF from the...

Page 17: ...inted or select Add to restore the channel appointed Channel Edit Press ENTER to edit a name for the channel appointed Use to select the letters you want and use BackSpace key to delete backwards Move the cursor to OK and then press ENTER to complete and save the channel name To cancel editing choose Cancel or exit without pressing OK Setup Menu To set up OSD window Setup Menu is active in all inp...

Page 18: ... password again press OK to conﬁrm or Cancel to exit Note Please make sure you remember your new password after changing because you cannot recall the default setting of the password by any selection Clear All To clear all the locks set before press ENTER Press MENU to return to the previous page Color Temperature To select the color temperature from Warm Cold Normal or User If you select User you...

Page 19: ...cture s horizontal position vertical position ﬁne tune and H Size Contrast To adjust contrast of the video Brightness To adjust luminance of the video Fine Tune To adjust the delay time of data and clock to reduce noise in picture Manual Clock To adjust the horizontal pixel clock of the video H Position To adjust the horizontal position of the picture V Position To adjust the vertical position of ...

Page 20: ...b screen Notes Initial password 0000 If you forget your initial password you can press 8866 to resume SWAP Press SWAP to exchange main screen to sub screen including video and sound The function is available both in PIP and POP 2 Use to select the sub input source and press ENTER to conﬁrm Note To select the input source for main screen press INPUT button ViewSonic Corporation Confidential Do Not ...

Page 21: ...l and analog video ports and route them into Main and PIP data path B 3D comb filter Video Decoder Deinterlacer and Scaling controller MT8202 includes 3D comb filter TV decoder to retrieve the best image from popular composite signals Embedded HDTV VGA decoders let the high bandwidth input signals perfectly reproduced 24 16 8 bits digital port may accept all kinds of external digital input video s...

Page 22: ...e built in High bandwidth Digital Content Protection HDCP decryption engine secures the digital link for transmission of valuable high definition video and audio Built in HDCP self test engine simplifies manufacturing testing ViewSonic Corporation Confidential Do Not Copy N3250w 1L 19 MT8202 LCD Controller IC MT8293 Digital audio interface EEPROM for EDID EEPROM for HDCP Key HDMI Conn ector 12c in...

Page 23: ... with lip sync control delivering high quality post processed sound effect to customers Audio interface accept analog audio signal from Tuner e g SIF or AF It also includes preprocessing circuit to filter the noisy audio signals Audio decoder will decode the BTSC and output best sound with enhanced 3D surround post processing The AD12250 converts stereo single ended analog input signals into 24 bi...

Page 24: ...tern 1 4 1 EEPROM INIT A Timing 1366 768 60Hz B Pattern 16 12 pane C Press POWER and ENTER at the same time then go into the FACTORY MODE Fig 1 fig 2 D Figure 1 Select EEPROM INITIAL and press ENTER The act of EEPROM INITIAL is completed when EEPROM INIT disappeared 1 4 2 COLOR TEMPERATURE ADJUSTING PC MODE A Timing 1360 768 60Hz B Pattern 16 grey scale C LCD TV should be run in and warmed up for ...

Page 25: ...e sure the 480i 480p 720p 1080i TIMING is right 1 4 6 OSD FUNCTION TEST A Time 1360x768 60Hz B Pattern 16 12 pane C Make sure that Each FUNCTION has one right action 1 4 7 YPbPr S VIDEO AV TVS FUNCTION TEST A Input YPbPr S VIDEO AV TV s signal and check B Input USA air channel TABLE 1 and USA CATV channel for TV channel C Under YPbPr MODE Make sure the 408i 480P 720P 1080i is right 1 4 8 AUDIO FUN...

Page 26: ...553 75 559 75 565 75 571 75 577 75 583 75 589 75 595 75 601 75 607 75 613 75 619 75 625 75 631 75 637 75 643 75 101 00 107 00 113 00 123 00 129 00 221 00 227 00 233 00 239 00 245 00 251 00 257 00 517 00 523 00 529 00 535 00 541 00 547 00 553 00 559 00 565 00 571 00 577 00 583 00 589 00 595 00 601 00 607 00 613 00 619 00 625 00 631 00 637 00 643 00 649 00 655 00 661 00 667 00 673 00 679 00 685 00 4...

Page 27: ...7 00 263 00 269 00 275 00 281 00 287 00 293 00 299 00 305 00 311 00 317 00 323 00 329 00 335 00 341 00 347 00 353 00 359 00 365 00 371 00 377 00 383 00 389 00 395 00 JJ KK LL MM NN OO PP QQ RR SS TT UU VV WW AAA BBB CCC DDD EEE 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 354 360 360 366 366 372 3...

Page 28: ...ceive the image disturbance Judgment basis Whether there is unusual sound F CHANNEL 36 Check T1 of close caption Input signal level 45dBu G CHANNEL 69 Adjustment attenuator If the critical point of the change of the image signal to noise ratio is under LEVEL 60dBu regards as normally PRODUCTS OUTPUT CHECK ITEM A The same as CENTRALISM TRANSMITTING SIGNAL CHECK CONTENT B saturation TEST inputs the ...

Page 29: ...s 0 106ms 0 064ms V Border 0 254ms 0 000ms 0 000ms 0 000ms H V Sync Interlace No No No No ITEM 5 6 7 8 TIMING 1024 768 60HZ 1024 768 75HZ 1280 720 60HZ 1280 768 60HZ Pixel Rate 65 000MHZ 78 750MHZ 74 250MHZ 65 000MHZ H TOTAL 20 677us 16 660us 22 222us 20 677us H DISPLAY 15 754us 13 003us 17 239us 15 754us H B Porch 2 462us 2 235us 2 936us 2 462us H Width 2 092us 1 219us 1 007us 2 092us H Border 0 ...

Page 30: ... 959us 15 630us H DISPLAY 15 906us 11 852us H B Porch 2 994us 2 296us H Width 1 310us 1 037us H Border 0 000us 0 000us V TOTAL 16 662ms 16 661ms V DISPLAY 16 097ms 16 005ms V B Porch 0 377ms 0 594ms Vs Width 0 126ms 0 047ms V Border 0 00ms 0 00ms H V Sync Interlace No No ViewSonic Corporation Confidential Do Not Copy N3250w 1L 27 ...

Page 31: ...conform to the LCD TV you have to do the DDC key in 2 1 Equipment Needed N3250W L LCD TV DDC Card PC RS 232 cable Barcode Reader VGA Cable N3250W L LCD TV DDC Card PC RS 232 Cable VGA Cable Barcode Reader 2 2 Setup Procedure 2 2 1 Connect VGA Card and DDC Card with RS 232 cable ViewSonic Corporation Confidential Do Not Copy N3250w 1L 28 ...

Page 32: ...2 2 3 Connect DDC Card and N3250W L LCD TV with VGA Cable when key in DVI DDC information use VGA transform to DVI port 2 2 4 Connect Power Cord to N3250W L LCD TV 2 3 DDC Key In Procedure 2 3 1 Run DDC exe ViewSonic Corporation Confidential Do Not Copy N3250w 1L 29 ...

Page 33: ...2 3 2 Choose model number then 2 3 3 Press ENTER key ViewSonic Corporation Confidential Do Not Copy N3250w 1L 30 ...

Page 34: ...2 3 4 Press F4 key 2 3 5 Input barcode ViewSonic Corporation Confidential Do Not Copy N3250w 1L 31 ...

Page 35: ...2 3 6 Press ENTER key then the successful picture is as follows DDC DOWNLOED OK 2 3 7 Exit program ViewSonic Corporation Confidential Do Not Copy N3250w 1L 32 ...

Page 36: ... N3250W L LCD TV PC RS 232 cable Barcode Reader HDMI Cable N3250W L LCD TV PC RS 232 Cable HDMI Cable Barcode Reader 3 2 Setup Procedure 3 2 1Connect HDMI Card and DDC Card with RS 232 cable ViewSonic Corporation Confidential Do Not Copy N3250w 1L 33 ...

Page 37: ... keyboard and PC keyboard port 3 2 3 Connect DDC Card and N3250W L LCD TV with HDMI Cable 3 2 4 Connect Power Cord to N3250W L LCD TV 3 3 DDC Key In Procedure 3 3 1 Run DDC exe ViewSonic Corporation Confidential Do Not Copy N3250w 1L 34 ...

Page 38: ...3 3 2 Choose model number then 3 3 3 Press ENTER key ViewSonic Corporation Confidential Do Not Copy N3250w 1L 35 ...

Page 39: ...3 3 4 Input barcode 3 3 5 Press ENTER key then the successful picture is as follows DDC DOWNLOED OK 3 3 6 Exit program ViewSonic Corporation Confidential Do Not Copy N3250w 1L 36 ...

Page 40: ...gram execution N3250W L ISP FIXTURE PC 4 2 Installing the USB device driver The USB driver will be upgraded if necessary PL 2303 Driver Installer exe 4 3 Insert the USB to RS232 Download Board to PC s USB port Then you can found the USB Device detected and follow Windows comments to finish the Driver install 4 4 Execute the Mtktool to start download the file The Mtktool program will be upgraded if...

Page 41: ...4 5 2 Select COM port Depends on the COM port assigned in System Device Manager Refer below right 4 5 3 Select Baud Rate 115200x 8 Suggestion ViewSonic Corporation Confidential Do Not Copy N3250w 1L 38 ...

Page 42: ...4 5 4 Enable the USB Bridge 4 5 5 Browsing the File to download ViewSonic Corporation Confidential Do Not Copy N3250w 1L 39 ...

Page 43: ...n your platform and Mtktool 2 You can slow down the baud rate if some Flash memory can not works properly in high speed download 3 Please call the MediaTek contact window if any problem found like unsupported Flash Type or fail to download ViewSonic Corporation Confidential Do Not Copy N3250w 1L 40 ...

Page 44: ...the cushions on the LCD TV Figure 3 1 4 Place the LCD TV into the carton and then Put the other cushions on the LCD TV put all the accessories into the carton At last close the carton and seal it with tape Figure 4 Figure 4 Figure 3 Figure 1 Figure 2 1 Power Cord 2 VGA Cable 3 RF Cable 4 RCA Cable 5 User s Guide 6 Remote contrl 7 Guarant Card 8 Battery ViewSonic Corporation Confidential Do Not Cop...

Page 45: ...46P AC POWER CORD 1 10 CB 00003425 Cable RCA 3P Y R W 2562 26 1 8M BLK Active 2427701893P RCA CABLE 1 11 A VC 0101 0386 Video Cable Cable D15 D15 20276 3 6 1 83M Black Active 2427501187P VGA CABLE RA 1 11 CB 00005507 Video IO Cable D15 D15 20276 4 5 1 83M BLACK Active 2427501195P VGA CABLE RB 1 12 P 00004497 Box Carton 360X220X50mm WXDXH Box B Active 2011100017P CARTON BOX 1 13 P 00006630 CARTON B...

Page 46: ...e 1 Disassembly of Stand and Dust Cover from LCD TV 1 1 Unscrew 4 screws that secure Stand Unit and detach Dust Cover from the LCD TV Stand Dust Cover Dust Cover ViewSonic Corporation Confidential Do Not Copy N3250w 1L 43 ...

Page 47: ...6 screws to remove Rear Cover 3 Disassembly of Main Board Power Board IR Board Speaker Front Cover and Panel Unit 3 1 Unscrew 14 screws to remove Shield Plate Rear Cover Shield Plate ViewSonic Corporation Confidential Do Not Copy N3250w 1L 44 ...

Page 48: ...3 2 Unscrew 9 screws to remove Dust Cover and METAL FITTG METAL FITTG I O Down METAL FITTG I O Side DUST COVER ViewSonic Corporation Confidential Do Not Copy N3250w 1L 45 ...

Page 49: ...rew 5 screws and disconnect the wires to remove Main Board 3 4 Unscrew 4 screws and disconnect the wires to remove Power Board Power Board Main Board ViewSonic Corporation Confidential Do Not Copy N3250w 1L 46 ...

Page 50: ...3 5 Unscrew 3 screws and disconnect the wires to remove KeyPad Board 3 6 Unscrew 8 screws to remove Speaker Speaker ViewSonic Corporation Confidential Do Not Copy N3250w 1L 47 ...

Page 51: ...3 7 Unscrew 8 screws to remove Bracket Fix BRACKET FIX 3 8 Unscrew 4 screws to remove IR Board IR Board ViewSonic Corporation Confidential Do Not Copy N3250w 1L 48 ...

Page 52: ...ws to remove Front Cover 3 10 Lay Panel Unit facedown and unscrew 8 screws on its right left up and down sides to remove Panel Bracket Front Cover Panel Bracket ViewSonic Corporation Confidential Do Not Copy N3250w 1L 49 ...

Page 53: ...3 11 Unscrew 8 screws to remove Bracket and Panel Unit Panel Unit ViewSonic Corporation Confidential Do Not Copy N3250w 1L 50 ...

Page 54: ...EO YPbPr No Check I106 has I2S signal output to I145 No Yes Yes Check I135 is defective Replace I135 Yes Check I136 is defective Replace I136 Yes Check Pin37 of I145 is high Check Earphone circuit Yes Check I145 is defective Replace I145 Yes Check Speaker Wire No Replace I106 No Yes No Yes No ViewSonic Corporation Confidential Do Not Copy N3250w 1L 51 ...

Page 55: ...es Yes Replace I106 I107 START Check X100 is OK Replace I101 Replace I102 No No No Replace IR Board Replace x100 No No Check Wire Connection on power board is OK Replace Power Board Connect the wire Yes No Yes Check IR Board ViewSonic Corporation Confidential Do Not Copy N3250w 1L 52 ...

Page 56: ...70 C331 is OK Replace L215 R501 R170 or C331 No Check I106 has output signal at Pin11 16 and Pin19 22 of P114 Replace I106 No Check the LVDS wire from P114 to panel is OK Replace LVDS Wire No Check inverter wire from power board to panel is OK Replace Inverter Wire No Replace Panel Check L226 R203 C335 is OK AV Replace L226 R203 or C335 No No Yes Yes Yes Yes Yes No Yes Yes Yes ViewSonic Corporatio...

Page 57: ...output signal at RP25 RP30 Replace I115 Yes No Yes Yes No Check I106 has output signal at Pin11 16 and Pin19 22 of P114 Replace I106 No Check the LVDS wire from P114 to panel is OK Replace LVDS Wire No Check inverter wire from power board to panel is OK Replace Inverter Wire No Replace Panel Yes Yes Yes ViewSonic Corporation Confidential Do Not Copy N3250w 1L 54 ...

Page 58: ...7 Block Diagram ViewSonic Corporation Confidential Do Not Copy N3250w 1L 55 ...

Page 59: ... 8 7 6 1 E B C SOT 23 Q102 MMBT3904 1 3 2 R105 NC 47K R103 4 7K C104 1U P100 CON_ 2 5mm_12 1 2 3 4 5 6 7 8 9 10 11 12 R102 10K L234 R201 0805 R514 100K R104 47K C105 1000U 16V LowESR C100 0 1U C107 0 1U L218 R201 0805 R110 4 7K H101 HOLE GND 2 3 4 5 9 8 7 6 1 2 3 4 5 9 8 7 6 1 I100 AP9435M 1 8 2 7 3 6 4 5 S D S D S D G D E B CSOT 23 Q103 MMBT3904 1 3 2 R111 1K E B C SOT 23 Q101 MMBT3904 1 3 2 R108...

Page 60: ...R121 0805 I101 AP1510 1 8 2 7 3 6 4 5 FB VSS EN VSS OCSET Output VCC Output R515 3 9K R517 3 65K 1 R528 60 4 1 C108 47U 16V ADJ OUT IN I104 AIC117 1 8V SOT223 3 2 1 4 C127 0 1U C134 0 1U C129 0 1U D152 SR54 1 2 C118 100U 16V C122 220U 16V L104 R121 0603 C782 0 1U C0603 C126 0 1U C115 100U 16V R527 110 1 C784 0 1U C0603 C781 0 1U C0603 L108 R60 0603 C131 100U 16V C117 47U 16V C124 100U 16V C109 0 1...

Page 61: ...O11 24 SCL1 11 AADCVSS 5 8 19 22 UP3_0 24 A_CS_1 4 SY0 8 ERO3_GPIO 21 AOSDATA5 22 VIDEO_OUT 22 CCIR_GPIO_D 10 SDA0 11 SCL0 11 AUD_CTRL 11 SB33B SB18A DV33A SB33B SB33B DV18A SB33B SB33A TP14 TP34 TP07 TP38 TP11 TP20 R118 10K TP31 TP16 R114 1 5M TP36 TP28 TP08 R116 NC 10K TP09 X100 27MHz TP17 R119 10K TP18 TP01 TP27 TP13 TP03 C136 27P TP02 TP33 TP19 R117 1K TP15 TP10 MT8202 SOCKET I106 MT8202 BGA38...

Page 62: ...GND 2 3 25 TESTP3 3 ADACVDD 3 ADCVDD 3 LVDDB 3 REFP 3 PLLVDD3 3 TESTP4 3 AADCVDD 3 TESTN3 3 GNDA 3 8 19 22 LVDDA 3 REFN 3 PLLVDD1 3 AVDD_VAD0 3 DACFS 3 AVDD_VAD1 3 AV33A AV33A ASB33A ADCV33A ADCV18A ASB18A ASB18A ADCV33A ADCV33A AV18A C284 4 7U L120 R60 0603 C265 1U R148 820 C251 10U 10V C0805 C262 4 7U C246 4 7U C224 0 1U C241 0 1U C0603 C233 0 1U C0603 L115 R60 0603 L122 R60 0603 C260 4 7U C275 ...

Page 63: ...3 22 C163 0 1U C150 0 1U C145 0 1U RP18 47x4 1 2 3 4 5 6 7 8 C170 3300P R144 75 C180 0 1U C199 0 1U C0603 R123 22 C184 0 1U C137 0 1U C151 0 1U C188 0 1U I107 29LV160 25 24 23 22 21 20 19 18 8 9 28 47 16 29 31 33 35 7 26 38 40 42 44 30 32 10 36 39 41 43 45 37 27 11 15 34 46 6 4 5 3 2 1 48 17 13 12 14 A0 A1 A2 A3 A4 A5 A6 A7 A8 A19 OE BYTE A18 D0 D1 D2 D3 A9 CE D4 D5 D6 D7 D8 D9 A20 D11 D12 D13 D14...

Page 64: ...0603 C288 3300P C0603 C301 0 1U C0603 C304 0 1U C295 3300P C0603 C290 0 1U C0603 C296 3300P C0603 C305 0 1U C302 0 1U C0603 C286 0 1U C306 0 1U C291 0 1U C0603 C297 3300P C0603 C287 0 1U C294 0 01U C0603 C298 3300P C0603 C303 0 1U C0603 C292 0 1U C0603 C300 100U 16V ViewSonic Corporation Confidential Do Not Copy N3250w 1L 61 ...

Page 65: ...0 3 TUMPX1 7 MPX1 3 PR0 3 AADCVSS 3 5 19 22 SOY0 3 AVSY0 9 AVPR0P 9 VFE_GND1 2 3 5 19 AVPR0N 9 SY0 3 AVPB0N 9 TUMPX2 7 CVBS0 3 SC0 3 PB0 3 AVSOY0 9 CVBS1 3 PB0 3 AVY0P 9 AVCVBS1 9 Y0 3 AVPB0P 9 AVSC0 9 PR0 3 AVY0N 9 AVCVBS0 7 MPX2 3 C339 0 01U R181 100 C352 15P C340 0 047U C334 0 01U C353 15P C343 0 01U C341 15P R184 39K R178 100 R174 NC R177 NC R179 NC C347 15P C346 330P C333 330P C349 56P C338 0...

Page 66: ... 10 26 TUMPX1 8 VCC DV33B SB33B DV33B VCC VCC Q105 2N7002 1 3 2 C308 NC uF L213 SG20 C330 47U 16V CE025050 C772 0 1U R157 0 R501 0 L125 2 2uH I112 FQ1236 F H 5 TH1 TH2 3 4 6 5 11 9 10 12 TH3 TH4 14 13 1 2 7 8 GND1 GND2 VS_TUNER SCL AS SDA 2nd SIF OUT AF R AF L CVBS GND3 GND4 AF MPX VS_IF NC NC NC NC R155 10K C773 3300P C775 1U R156 0 Q104 2N7002 1 3 2 L215 10uH 0805 L126 2 2uH C777 3300P C769 1000...

Page 67: ...PBPR0L_IN 20 AVPR0P 8 AVY0N 8 AVSY0 8 AVPB0N 8 AVCVBS1 8 YPBPR0R_IN 20 AV0SY0L_IN 20 AVPB0P 8 AVY0P 8 AVSOY0 8 AVPR0N 8 AV0SY0L_IN 20 AV0SY0R_IN 20 YPBPR0L_IN 20 YPBPR0R_IN 20 R534 0 D103 10p D104 NC 5 6V 1 2 L223 R80 0603 200mA R194 75 P103 S_TERMINAL1 6 1 8 2 5 3 4 7 R185 0 R195 100K R201 75 L221 R80 0603 200mA D105 10p R187 100K R535 0 R189 100K L224 R80 0603 200mA D102 NC 5 6V 1 2 D107 10p C35...

Page 68: ...6 15 1 4 7 9 12 IA0 IB0 IC0 ID0 IA1 IB1 IC1 ID1 GND VCC OE S YA YB YC YD C361 1000P R223 NC C393 0 1U R491 4 7K D120 NC 3 1 2 C374 1000P RP31 33x4 1 2 3 4 5 6 7 8 TP44 C403 1000P C402 0 1U TP41 TP60 R220 2 2K RP28 33x4 1 2 3 4 5 6 7 8 TP50 C372 1000P Q108 MOSFET N 2SK2158 SOT23 1 3 2 C397 0 1U L146 R60 0603 C406 0 1U C358 10U 50V TP55 D121 NC 3 1 2 C359 100U 16V RP27 33x4 1 2 3 4 5 6 7 8 C367 1000...

Page 69: ... 5 6V 1 2 D132 5 6V 1 2 C610 0 01U R340 510 R328 75 C615 0 01U C623 0 01U C621 5P R348 2K R333 NC 10K R324 100 R327 68 D133 NC 5 6V 1 2 L229 R80 0603 200mA C619 0 01U I133 24C21 SMD DIP 1 2 3 4 5 6 7 8 NC1 NC2 NC3 GND SDA SCL VCLK VCC R346 510 R343 100 R347 100K L173 R10 0603 L177 R60 0603 P107 PC AUDIO I P 5 4 3 2 1 R329 100 C609 5P C622 100P C626 100P L230 R80 0603 200mA C624 0 01U L175 R121 060...

Page 70: ... YPBPR0L_IN 9 YPBPR0R_IN 9 AV0SY0L_IN 9 AV0SY0R_IN 9 GPIO7 3 GPIO9 3 12V 3 SG_12V SG_12V SG_12V SG_12V SG_12V SG_12V SG_12V SG_12V SG_12V R355 47K R362 47K R354 10K C633 0 1U C0603 C629 22U 50V R353 47K R351 47K R359 47K R350 47K E B C SOT 23 Q113 MMBT3904 1 3 2 R356 47K E B C SOT 23 Q112 MMBT3904 1 3 2 R365 33 C628 22U 50V R352 47K R363 47K R360 10K I134 HEF4052 12V SOP16 1 2 3 4 5 6 7 8 9 15 14 ...

Page 71: ...0V C643 0 1U C649 10U 50V R379 10K R383 100K I136 AD12250 TSSOP16 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 M0 MCLK VL SDOUT GND VD SCLK LRCK RST AINL VQ AINR VA REF_GND FILT M1 C641 0 1U L181 R121 0603 C651 2200P R368 10K R385 10K C635 10U 50V R371 NC 10K C654 0 1U R367 10K R369 10K R492 0 C637 0 1U I135B NJM4558 OPA 5 6 7 8 4 C634 10U 50V C646 4 7U 50V C638 1U C648 470P R386 5 1K C636 100U 16V R376...

Page 72: ...1 0603 I139B NJM4558 OPA 5 6 7 8 4 R498 NC 220 R430 100 R429 100 I139A NJM4558 OPA 3 2 1 8 4 E B C SOT 23 Q125 NC 1 3 2 R497 NC 10K C692 1000P L188 R121 0603 R415 20K C685 150P C669 220U 16V C687 820P C688 22U 50V R525 NC R419 0 C748 NC 100U 16V C686 10U 50V R499 NC 1K R428 5 1K C691 22U 50V C678 150P R426 0 R496 NC 10K R424 20K C693 1000P D141 NC 5 6V 1 2 C665 10U 50V R420 10K L187 R121 0603 C679...

Page 73: ...603 C675 0 1U C0603 L185 R121 0603 C659 1n C0603 L200 R121 0805 L209 R121 0603 R242 47 R241 47 C663 1n C0603 C744 1n C0603 C677 0 1U C0603 C680 0 1U C0603 R422 10 R506 1M C745 0 1U C0603 L186 R121 0603 R397 33 L184 R121 0603 I145 AD8256 36 35 34 33 32 31 30 29 28 27 26 25 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 48 47 46 45 44 43 42 41 40 39 38 37 HPL HPR AGND AVDD PWMSA DEF ...

Page 74: ... 3 GPIO11 3 GPIO15 3 GPIO16 3 IRRCVR1 3 5VSB 5VSB SB33B Q121 MMBT3906 1 2 3 C734 0 1U R469 10K R468 10K R458 47 R467 10K C728 0 1U R466 10K R464 10K C732 0 1U R465 10K C730 0 1U C731 0 1U C733 0 1U R462 4 7K C729 0 1U R463 4 7K R459 330 Q120 MMBT3906 1 2 3 R460 330 R461 1K C726 0 1U P112 6P_2mm 1 2 3 4 5 6 P113 7P_2mm 1 2 3 4 5 6 7 C727 47U 16V R470 10K C309 470P ViewSonic Corporation Confidential...

Page 75: ...0 3 3 GPIO2 3 PANELVCC 5VSB 12V PANELVCC R480 47K P803 CON 2X15 2mm 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 30 C735 47U 16V I142 AP9435M 1 8 2 7 3 6 4 5 S D S D S D G D C740 0 1U E B C SOT 23 Q122 MMBT3904 1 3 2 R526 10K C737 220U 16V R479 NC 47K C739 0 1U L195 R121 0805 R481 47K C787 0 1U L196 NC R121 0805 ViewSonic Corporation Confidential Do Not Copy N3250w...

Page 76: ...11 DTVU0TX 11 SCL 7 10 SDA 7 10 SCL0 11 SDA0 11 SB33B SB33B SB33 5VSB SB33B C741 10U 50V R503 4 7K R513 0 R484 10K R489 47K C742 0 1U R487 10K D137 LL4148 E B C SOT 23 Q123 MMBT3904 1 3 2 R485 10K R490 47K R486 20K I144 EEPROM 24C16 SOP8 SMD 1 2 3 4 5 6 7 8 NC NC NC GND SDA SCL WP VCC R488 NC 10K P115 NC 6x1 W HOUSING 6P200VM 1 2 3 4 5 6 R482 NC R E B C SOT 23 Q124 MMBT3904 1 3 2 C791 0 1U R483 10...

Page 77: ...8 19 Power board ViewSonic Corporation Confidential Do Not Copy N3250w 1L 74 ...

Page 78: ...2 3 3 4 1 2 3 4 1 2 3 1 2 1 6 11 7 3 4 1 2 2 3 3 4 1 2 1 2 3 1 8 20 Power inverter board ViewSonic Corporation Confidential Do Not Copy N3250w 1L 75 ...

Page 79: ...9 1 MAIN PCB TOP VIEW ViewSonic Corporation Confidential Do Not Copy N3250w 1L 76 9 PCB Layout Diagrams ...

Page 80: ...9 2 MAIN PCB BOTTOM VIEW ViewSonic Corporation Confidential Do Not Copy N3250w 1L 77 ...

Page 81: ...9 3 CON PCB TOP VIEW ViewSonic Corporation Confidential Do Not Copy N3250w 1L 78 ...

Page 82: ...9 4 CON PCB BOTTOM VIEW ViewSonic Corporation Confidential Do Not Copy N3250w 1L 79 ...

Page 83: ...9 5 IR PCB TOP VIEW ViewSonic Corporation Confidential Do Not Copy N3250w 1L 80 ...

Page 84: ...9 6 IR PCB BOTTOM VIEW ViewSonic Corporation Confidential Do Not Copy N3250w 1L 81 ...

Page 85: ...ViewSonic Corporation Confidential Do Not Copy N3250w 1L 82 10 Exploded View And Exploded Parts List ...

Page 86: ...ViewSonic Corporation Confidential Do Not Copy N3250w 1L 83 ...

Page 87: ...G SECC T 1 0MM VESA SUPPORT 1 26 N A 2083630068P SCREW FMS M3X6 M S TITE F NI 4 27 N A 2082630042P SCREW M3 4 P 0 5 14 28 N A 2084740122P SCREW BND T M4 12 BND T 4 29 N A 2027259602P DUST COVER JC32 ABS HB BLACK C 1 30 N A 2044266601P FUNCTION KEY JC278 ABS 94V0 AL PLATE FUNCTI 1 31 M SCW 0824 0285 2084730082P SCREW BND T M3X8 BND T 2 32 N A 2082630062P SCREW M3X6 P 0 5 2 33 N A 2084740082P SCREW ...

Page 88: ...20 DC 00006620 2002310587P 6P81 14 Electronic Components CRT EEPROM Fly Back Transformer Microprocessor LCD TV Panel LCD PANEL CLAA320WA 01C A CPT E 00005966 E 00005966 2212010800P V901 15 Hardware BRACKET FIX JC328AA BASE AL BLACK C HW 00003572 HW 00003572 2071874401P 5B01 16 POLYFOAM 32 AA TOP R EPE P 00004461 P 00004461 2012184600P 6P20 17 POLYFOAM 32 AA TOP L EPE P 00004462 P 00004462 20121847...

Page 89: ...46710596P CAP CHIP 85 C CS 0603 Y5V 16V 1 0u Z T C272 1 38 N A 2346110496P CAP CHIP 125 C CS 0603 X7R 50V 0 1u K T C273 1 39 E 00003865 2346710596P CAP CHIP 85 C CS 0603 Y5V 16V 1 0u Z T C282 1 40 N A 2346110496P CAP CHIP 125 C CS 0603 X7R 50V 0 1u K T C283 1 41 N A 2346110496P CAP CHIP 125 C CS 0603 X7R 50V 0 1u K T C304 1 42 N A 2341147196P CAP CHIP 125 C CS 0603 COG 50V 470p J T C309 1 43 N A 2...

Page 90: ... 0 1u K T C664 1 114 N A 2346110496P CAP CHIP 125 C CS 0603 X7R 50V 0 1u K T C667 1 115 N A 2346110496P CAP CHIP 125 C CS 0603 X7R 50V 0 1u K T C668 1 116 N A 2341115196P CAP CHIP 125 C CS 0603 COG 50V 150p J T C678 1 117 N A 2341182196P CAP CHIP 125 C CS 0603 COG 50V 820p J T C681 1 118 N A 2341115196P CAP CHIP 125 C CS 0603 COG 50V 150p J T C685 1 119 N A 2341182196P CAP CHIP 125 C CS 0603 COG 5...

Page 91: ...VISHAY D140 RB 1 192 N A 2364302396P DIODE SCHOTTKY SMD SR54 DO 214AA MOSPEC D152 1 193 N A 2364302396P DIODE SCHOTTKY SMD SR54 DO 214AA MOSPEC D153 1 194 E 00000915 2360501196P FET P CH SMD AP9435GM SO 8 APEC I100 RA 1 195 E 00003529 2360501796P FET P CH SMD APM9435KC SO 8 Anpec I100 RB 1 196 E 00000916 2360501596P FET P CH SMD AO4405 SO 8 AOS I100 RC 1 197 N A 2365425376P DIGITAL IC AP1510SA SOT...

Page 92: ...T Z 120 ohm 0603 I 3 0A L208 1 277 N A 2379512106P BEAD HI CURRENT Z 120 ohm 0603 I 3 0A L209 1 278 N A 2379512106P BEAD HI CURRENT Z 120 ohm 0603 I 3 0A L210 1 279 N A 2379500296P BEAD HI CURRENT Z 120 ohm 0805 I 6 0A L212 1 280 N A 2367101996P FILTER CER S SGM20C1E332 2A SUMITOMO L213 1 281 N A 2367101996P FILTER CER S SGM20C1E332 2A SUMITOMO L214 1 282 N A 2377510096P INDUCTOR CHIP MULTI LAYER ...

Page 93: ...9247008P RES CHIP NETWORKS 8P4R 1 16W 47 ohm J P 0 8 RP16 1 355 N A 2259275008P RES CHIP NETWORKS 8P4R 1 16W 75 ohm J P 0 8 RP17 1 356 E R 0405 6422 2259247008P RES CHIP NETWORKS 8P4R 1 16W 47 ohm J P 0 8 RP18 1 357 N A 2259275008P RES CHIP NETWORKS 8P4R 1 16W 75 ohm J P 0 8 RP19 1 358 E R 0405 6422 2259247008P RES CHIP NETWORKS 8P4R 1 16W 47 ohm J P 0 8 RP20 1 359 N A 2259275008P RES CHIP NETWORK...

Page 94: ...06 1 435 E R 0405 6600 2253200096P RES CHIP 1 10W RC 0603 1 10W 0 ohm J T R207 1 436 E R 0405 6410 2253210296P RES CHIP 1 10W RC 0603 1 10W 1 0Kohm J T R208 1 437 E R 0405 6419 2253247296P RES CHIP 1 10W RC 0603 1 10W 4 7Kohm J T R209 1 438 E R 0405 6600 2253200096P RES CHIP 1 10W RC 0603 1 10W 0 ohm J T R210 1 439 E R 0405 6419 2253247296P RES CHIP 1 10W RC 0603 1 10W 4 7Kohm J T R212 1 440 E R 0...

Page 95: ...05 6998 2253210096P RES CHIP 1 10W RC 0603 1 10W 10 ohm J T R402 1 516 E R 0405 6419 2253247296P RES CHIP 1 10W RC 0603 1 10W 4 7Kohm J T R403 1 517 E R 0405 6419 2253247296P RES CHIP 1 10W RC 0603 1 10W 4 7Kohm J T R404 1 518 E 00003527 2253247396P RES CHIP 1 10W RC 0603 1 10W 47Kohm J T R406 1 519 E R 0405 6998 2253210096P RES CHIP 1 10W RC 0603 1 10W 10 ohm J T R408 1 520 E R 0405 6998 22532100...

Page 96: ... 2253200096P RES CHIP 1 10W RC 0603 1 10W 0 ohm J T R535 1 595 E R 0405 6600 2253200096P RES CHIP 1 10W RC 0603 1 10W 0 ohm J T R536 1 596 E R 0405 6600 2253200096P RES CHIP 1 10W RC 0603 1 10W 0 ohm J T R537 1 597 E R 0405 6600 2253200096P RES CHIP 1 10W RC 0603 1 10W 0 ohm J T R538 1 598 N A 2202522802P PCB MULTILAYER 328A71U M B FR4 4 310 240 3 03 U001 1 599 N A 2072257200P HEAT SINK JP166K AL2...

Page 97: ...T C737 1 674 N A 2336310713P CAP MINI ELE 105 C EC 100u 16V 6 3 7 P 2 5 T C741 1 675 N A 2336047713P HI LIFE LOW ESR E CAP 4000HR EC 470u 16V 8 12 P 5 0 T C749 1 676 N A 2336047713P HI LIFE LOW ESR E CAP 4000HR EC 470u 16V 8 12 P 5 0 T C750 1 677 E C 0404 3096 2335310812P CAP ELE LOW ESR 105 C EC 1000u 16V 10 20 P 5 0 K C769 1 678 E C 0404 3096 2335310812P CAP ELE LOW ESR 105 C EC 1000u 16V 10 20 ...

Page 98: ... 50V 0 1u K T C235 1 755 N A 2347647596P CAP CHIP 85 C CS 0805 Y5V 16V 4 7u Z T C236 1 756 E 00003865 2346710596P CAP CHIP 85 C CS 0603 Y5V 16V 1 0u Z T C239 1 757 N A 2347647596P CAP CHIP 85 C CS 0805 Y5V 16V 4 7u Z T C240 1 758 N A 2346110496P CAP CHIP 125 C CS 0603 X7R 50V 0 1u K T C241 1 759 N A 2347710696P CAP CHIP 85 C CS 0805 Y5V 10V 10u Z T C243 1 760 E 00003865 2346710596P CAP CHIP 85 C C...

Page 99: ...03 COG 50V 1000p J T C398 1 836 N A 2346110496P CAP CHIP 125 C CS 0603 X7R 50V 0 1u K T C399 1 837 N A 2341110296P CAP CHIP 125 C CS 0603 COG 50V 1000p J T C400 1 838 N A 2346110496P CAP CHIP 125 C CS 0603 X7R 50V 0 1u K T C402 1 839 N A 2341110296P CAP CHIP 125 C CS 0603 COG 50V 1000p J T C403 1 840 N A 2346110496P CAP CHIP 125 C CS 0603 X7R 50V 0 1u K T C404 1 841 N A 2341110296P CAP CHIP 125 C ...

Page 100: ...0 ohm J T R156 1 914 E R 0405 6600 2253200096P RES CHIP 1 10W RC 0603 1 10W 0 ohm J T R157 1 915 E R 0405 6411 2253210396P RES CHIP 1 10W RC 0603 1 10W 10Kohm J T R158 1 916 E R 0405 6600 2253200096P RES CHIP 1 10W RC 0603 1 10W 0 ohm J T R172 1 917 N A 2253210496P RES CHIP 1 10W RC 0603 1 10W 100Kohm J T R187 1 918 N A 2253210496P RES CHIP 1 10W RC 0603 1 10W 100Kohm J T R189 1 919 N A 2253210496...

Page 101: ...0P SCREW SPE ISZZTER001A M3 6L MSWR17 FZMYI 1F26 5 994 M SCW 0824 0811 2080003700P SCREW SPE ISZZTER001A M3 6L MSWR17 FZMYI 1F27 4 995 N A 2072050902P METAL FITTG I O RIGHT 2U S SECC T 1 0MM 1F28 1 996 N A 2082630042P SCREW M3 4 P 0 5 1F29 3 997 N A 2072050705P METAL FITTG I O DOWN 2U S SECC T 1 0MM NO HOT SWITCHES 1F30 1 998 N A 2082630042P SCREW M3 4 P 0 5 1F31 4 999 N A 2083630068P SCREW FMS M3...

Page 102: ...7 2001131599P OWNER GUIDE N3250W L VS11335 1L SOUTH USA 6P80 1 1048 DC 00006620 2002310587P GUARANT CARD VIEWSONIC N3250W L L QSG 6P81 1 1049 P 00004497 2011100017P CARTON BOX 360X220X50mm WXDXH BOX B 6P85 1 1050 N A 2013228807P POLYETHY BAG 200X350X0 03T mm LDPE B5 6P86 1 1051 P 00006630 2011132534P CARTON BOX VIEWSONIC N3250W L VS11335 1L 6P01 1 1052 N A 2055632217P LABEL N3250W L VS11335 1L L C...

Page 103: ...low Chart 7 Block Diagrams 8 Schematic Diagrams 9 PCB Layout Diagrams 10 Exploded Diagram and Exploded Parts List 11 Recommended Spare Parts List B Are you satisfied with this Service Manual Item Excellent Good Fair Bad 1 Service Manual Content 2 Service Manual Layout 3 The form and listing C Do you have any other opinions or suggestions regarding this service manual Reader s basic dada Name Title...

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