ViewSonic VX1962wm - 19" LCD Monitor Service Manual Download Page 30 | Manualshive

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7. Block Diagram

7.1 Main Board

Scalar IC NT68670HTFG

(Include MCU, ADC, OSD)

(U2)

D-Sub

Connector

(CN1)

EEPROM

M24C16

(U3)

DVI_SCL
DVI_SDA

LCD Interface

(CN3)

Key Control

interface

(CN404)

Crystal

12MHz

(Y1)

DVI

Connector

(CN5)

EEPROM

M24C02

(U1)

EEPROM

M24C02

(U6)

DVI_SCL
DVI_SDA

H sync

V sync

RGB

D-DATA

D-CLK

EEPROM

M24C04

(U4)

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Summary of Contents for VX1962wm - 19" LCD Monitor

Page 1: ...ViewSonic VX1962wm wmp 3 Model No VSXXXXX 19 Color TFT LCD Display VX1962wm wmp 3_SM Rev 1a Apr 2009 ViewSonic 381 Brea Canyon Road Walnut California 91789 USA 800 888 8583 Service Manual ...

Page 2: ...ny 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 trademarks used within this d...

Page 3: ...Function Control Description 8 4 Circuit Description 13 5 Adjusting Procedure 20 6 Trouble Shooting Flow Chart 29 7 Block Diagrams 30 8 Schematic Diagrams 32 9 PCB Layout Diagrams 39 10 Exploded Diagram and Spare Parts List 45 11 Recommended Spare Parts List 48 12 Different Parts List 55 ...

Page 4: ...ower cable immediately and consult your service technician Always unplug the monitor before cleaning it Clean the cabinet with a clean dry cloth Apply non ammonia based cleaner onto the cloth not directly onto the glass screen Keep the monitor away from magnetic objects motors TV sets and transformer Do not place heavy objects on the monitor or power cord 1 2 Product Safety Notice Many electrical ...

Page 5: ... 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 Taking out the monitor by grasping the LCD panel That may cause Mura 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 ...

Page 6: ...6 Place the monitor on the lap the panel surface must be upwards The panel is placed facedown on the lap That may cause Mura ...

Page 7: ...7 2 Specification ...

Page 8: ...8 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 ...

Page 9: ...r down buttons 5 To save the adjustments and exit the menu press button 1 twice The following tips may help you optimize your display Adjust the computer s graphics card so that it outputs a 1680 x 1050 60Hz video signal to the LCD display Look for instructions on changing the refresh rate in the graphics card s user guide If necessary make small adjustments using H POSITION and V POSITION until t...

Page 10: ...Brightness adjusts background black level of the screen image Input Select toggles between inputs if you have more than one computer connected to the LCD Display Audio Adjust Volume increases the volume decreases the volume and mutes the audio Mute temporarily silences audio output Color Adjust provides several color adjustment modes including preset color temperatures and a User Color mode which ...

Page 11: ... button 2 2 To adjust selected color press and Important If you select RECALL from the Main Menu when the product is set to a Preset Timing Mode colors return to the 6500K factory preset 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 in...

Page 12: ...ge Select allows the user to choose the language used in the menus and control screens Resolution Notice advises the optimal resolution to use OSD Position allows the user to move the OSD menus and control screens OSD Timeout sets the length of time the OSD screen is displayed For example with a 15 second setting if a control is not pushed within 15 seconds the display screen disappears OSD Backgr...

Page 13: ...NT68670 operates at frequencies up to 170MHz suitable for LCD monitor up to UXGA resolution The NT68670 also has a built in noise reduction function to provide more stable video quality spread spectrum to provide low EMI solution sRGB for video color space convert and post pattern for manufacture test The display provided multi interface with timing controller or without timing controller With tim...

Page 14: ...14 PIN Function ...

Page 15: ...15 ...

Page 16: ...16 ...

Page 17: ...17 ...

Page 18: ...18 ...

Page 19: ...ll regulated outputs of 1 25 to 5 0 with 6 4V to 18V input supply Pin Descriptions Name I O Pin Function Adj GND I 1 A resistor divider from this pin to the Vout pin and ground sets the output voltage Ground only for Fixed Mode Vout O 2 The output of the regulator A minimum of 10uF capacitor 0 15Ω ESR 20Ω must be connected from this pin to ground to insure stability Vin I 3 The input pin of regula...

Page 20: ...ow for 10 seconds If the power button is pressed the message Power Button Locked will display for 3 seconds With or without this setting after a power failure your LCD display s power will automatically turn ON when power is restored Power Button Unlock Press and hold 1 and the down arrow again for 10 seconds 5 1 White balance Luminance adjustment Approximately 2 Hours should be allowed for warm u...

Page 21: ...0cd m2 c Adjust Color2 65000 K color temperature 7 Switch the Chroma C7120 to RGB mode with press MODE button 8 Switch the MEM channel to Channel 2 with up or down arrow on Chroma C7120 9 The LCD indicator on Minolta CA210 will show x 313 12 y 329 12 Y 240cd m2 d Adjust SRGB 50000 K color temperature 1 Switch the Chroma C71200 to RGB mode with press MODE button 2 Switch the MEM channel to Channel ...

Page 22: ...ipment needed Monitor NT Series Fixture for Firmware Upgrade Power Adapter 1 for Fixture VGA Cable 1 PC Personal Computer LPT Cable 1 Firmware Upgrade Program One additional monitor for checking the program execution ISP tool LPT Cable VGA Cable ...

Page 23: ...ect Power Cord to Monitor c Connect V1962wm wmp 3 to the ISP_Tool by VGA cable 5 2 2 Update the NT S firmware ISP tool Writer exe This tool update firmware for NOVATEK U2 You should jump the pin to For Flash at ISP Board Connect to the PC LPT Connect to the VSC V1962wm wmp 3 ...

Page 24: ...24 Double click Writer exe This tool can auto detect the right MCU programe speed the process as follow ...

Page 25: ...hed click Load Hex then chosse the firmware that you want to update Click Auto then the update will begin Wait for a moment until the bar is 100 the program windows will show Programing Success This means the update is successful ...

Page 26: ...he DDC key in 5 3 1 Equipment Needed V1962wm wmp 3 PC Personal computer LPT cable 12V DC Firmware upgrade program DDC Card VGA Cable 5 3 2 Install software You must install the at the first Note After installation you must restart the PC to take the setup to effect 5 3 3 Connect the DDC card as follow Connect to the PC LPT Connect this port to the VSC V1962wm wmp 3 s VGA 12V Input ...

Page 27: ...27 For analog a Double click appear as follow Figs b Click ...

Page 28: ...28 c Key in the Serial Number printed on the barcode label then click OK d Unit appears the following Fig writer completed 12 codes for example QUJ070100001 ...

Page 29: ...29 6 Troubleshooting Flow Chart ...

Page 30: ...G Include MCU ADC OSD U2 D Sub Connector CN1 EEPROM M24C16 U3 DVI_SCL DVI_SDA LCD Interface CN3 Key Control interface CN404 Crystal 12MHz Y1 DVI Connector CN5 EEPROM M24C02 U1 EEPROM M24C02 U6 DVI_SCL DVI_SDA H sync V sync RGB D DATA D CLK EEPROM M24C04 U4 ...

Page 31: ...ifier and Filter PWM Control IC Transformer Diode rectifier Filter AC input 5V ON OFF Control Syntony circuit and Output Circuit Lamp ON OFF Feedback Circuit Over Voltage Protect DC AC Nu Pulse PWM Control IC Feedback Circuit Diode rectifier Filter 13 8V ...

Page 32: ...11 12 13 14 15 10 CN1 MLX89263 6762 RoHS RAI VGA_SDA VSI HSI BAI GAI VGA_SCL GND_POWER GND_POWER RAI VGA_5V C1 0402 47n 16V Y VGA_SDA VGA_SCL VGA_5V 1 2 3 D1 BAV70W RoHS C2 0402 47n 16V Y NC 1 NC 2 NC 3 GND 4 SDA 5 SCL 6 WP 7 VCC 8 U1 M24C02B 10TU 1 8 RoHS VSI 5V GND_POWER GND_POWER VGA_VDD VGA_5V VGA_VDD VGA_VDD GI1 3 SOGI 3 RI1 3 RI1 3 GI1 3 BI1 3 BI1 3 GND_POWER 1 2 Z2 NC UDZSF 1 9V GND_POWER C...

Page 33: ...DD1V8 MUTE C24 0402 100n 16V Y R92 0402 0R 5 R22 0402 100R 5 DVDD RSTB 1 MCU_VCC 2 MCU_GND 3 RX2 4 RX2 5 AVCC 6 RX1 7 RX1 8 AGND 9 RX0 10 RX0 11 AGND 12 RXC 13 RXC 14 AVCC 15 REXT 16 PVCC 17 PGND 18 BIN1 19 BIN1 20 SOG1I 21 GIN1 22 GIN1 23 RIN1 24 RIN1 25 ADC_VAA 26 ADC_GNDA 27 PC2 28 PD6 29 PB3 ADC3 INTE1 30 P31 TXD 31 P30 RXD 32 PB2 ADC2 INTE0 33 PB7 DDC_SDA1 34 PB6 DDC_SCL1 35 PA3 PWM5 36 PA4 P...

Page 34: ...5 MCU_VDD V33S 2 3 5 C64 LV101M016E055R 5V GND_POWER V5P R57 0402 33R 5 C37 NC 0402 100n 16V Y 1 2 B5 0805 0R 5 C41 1206 10u 10V Y E R58 0402 33R 5 POL 3 C58 0402 100n 16V Y TP 1 V18C1 GND C60 0402 100n 16V Y R59 0402 33R 5 CVDD1V8 C59 1206 10u 6 3V 5 C57 1206 10u 10V Y Scaler Core V33S VGA_3V3 LIPS_5V 6 GND_POWER C33 1206 10u 10V Y E Option for NT68670 STB 3 5V 2 5 R65 0402 240R 1 PWR_SW 3 GND 1 ...

Page 35: ...S 1 3 2 D13 NC BAV99 RoHS RX2 3 RX2 3 RXC 3 RX2 RX2 RXC 3 CLK RXC RXC C45 NC 0402 100n 16V Y DATA2 RX2 RXC GND_POWER GND_POWER C47 NC 0402 100n 16V Y DVI_SCL DAT2 1 DAT2 2 2 4shield 3 DAT4 4 DAT4 5 DDC SCL 6 DDC SDA 7 VSYNC 8 R 25 HSYNC 28 DAT1 9 DAT1 10 1 3shield 11 DAT3 12 DAT3 13 5V 14 SYNC GND 15 HPD 16 G 26 RGB GND 29 DAT0 17 DAT0 18 0 5shield 19 DAT5 20 DAT5 21 clk shield 22 clk 23 clk 24 B ...

Page 36: ...NC VPORT0603470KV05T RIN LIN R87 NC 0402 0R 5 RIN R86 NC 0402 0R 5 RIN LIN GND LIN RIN GND AMP_SHDN 3 LIPS_5V 4 VOL_PWM 3 SPK_R 4 SPK_L 4 SPK_L 4 MUTE 3 SPK_R 4 SE BTL 13 ROUT 14 VDD 15 ROUT 16 MUTE 1 SHDN 2 RIN 3 BYPASS 4 GND 5 LIN 6 VOL 7 VOLMAX 8 LOUT 9 VDD 10 LOUT 11 GND 12 U7 APA2068 GND 5V_AMP R83 0603 0R 5 C51 LV101M016E055R GND C52 1206 10u 10V Y C53 1206 10u 10V Y 5V_AMP 5V_AMP 5V_AMP GND...

Page 37: ... 16 AGND U301 62 03 R313 C301 R301 R302 R303 R306 1 2 3 Q301 627 C308 R305 R312 C303 C304 C305 R311 R310 C307 R308 1 2 3 Q302 627 R309 R307 D305 627 9 D304 627 9 D301 62 1 R316 R314 1 2 3 Q303 627 R320 1 2 3 Q304 627 C309 R315 R317 D302 627 9 R321 R323 R324 R322 R325 C314 9 3 3 C318 R332 R336 1 2 CN201 3 1 2 3 Q307 1 627 1 2 3 Q305 627 R327 R328 1 2 3 Q306 627 R330 R329 C311 C310 X 9 C312 1 2 3 4 ...

Page 38: ...88202 15011 LED_OR1 AUTO 1 2 3 4 SW1 DTSMG 62N 1 2 3 4 SW5 DTSMG 62N 1 2 3 4 SW4 DTSMG 62N 1 2 3 4 SW2 DTSMG 62N 1 2 CN2 3802Y E002 NNN 1 2 CN3 3802Y E002 NNN D2 19 21UYOC S530 A2 TR8 Orange LED D1 19 21VGC TR8 LED_GR1 BLUE LED PWR_SW MENU KEY_UP KEY_DOWN MENU KEY_UP SELECT KEY_DOWN AUTO PWR_SW AUDIOR ...

Page 39: ...39 9 PCB Layout Diagrams 9 1 Main Board ...

Page 40: ...40 ...

Page 41: ...41 9 2 Power Board ...

Page 42: ...42 ...

Page 43: ...43 ...

Page 44: ...44 9 3 Key Board ...

Page 45: ...45 10 Exploded Diagram and Exploded Parts List 10 1 EPL ...

Page 46: ...G 130 8120 4 7 STAND 1 7 STAND_L 1 7 DECORATION_STAND_R 1 7 WIRE_MOUNT 1 7 HINGE TOP 1 7 HINGE DOWN 1 7 SCREW M4X8 0M1G1740 8120 4 7 SCREW M4X12 0M1G1740 12120 1 8 REAR COVER 1 8 SUPPORT PLATE 1 8 KEYPAD 1 8 RUBBER CAP 40 D000227 4 8 SCREW Q3X8 0Q1G1830 8120 4 8 SCREW Q3X8 0Q1G 330 8120 2 9 MAIN BOARD CBPCRNBVSQ2 756GQ8CB VV080 1 9 SCREW Q3X4 0M1G 330 4120 1 10 POWER BOARD 1 10 SCREW Q3X4 0M1G 330...

Page 47: ...47 10 2 PPL Item Description Q ty 1 Signal cable 1 2 Power cable 1 3 DVI cable 1 4 Audio Cable 1 5 EPS L 1 6 LCD monitor 1 7 BASE 1 8 EPS R 1 9 Manual 1 10 Carton 1 ...

Page 48: ...04 089G 17356G553 AUDIO CABLE 1800MM 2nd source E08904 089G 17356H553 AUDIO CABLE 1800MM 2nd source E08902 089G 728CAA DB D SUB CABLE E08902 089G 728HAA DB D SUB CABLE 2nd source E08903 089G1748CAA AC SIGNAL CABLE DVI COMLINK E08903 089G1748HAA AC DVI CABLE 2nd source 089G176J 15N10 FFC CABLE 15P 192MM 089G176J 55N03 FFC CABLE 55P 125MM 32 D019363 E08901 089G402A18N CX POWER CORD 2nd source E08901...

Page 49: ...59 067G305V100 3 105 10UF 20 16V C62 067G305V101 3 105 100UF M 16V C64 067G305V101 3 105 100UF M 16V C51 067G305V221 3 220UF 16V J1 088G 30214K PHONE JACK 5PIN CN1 088G 35315F XH D SUB 15PIN VERTICAL CONN WITH SCREW CN5 088G 35424F DL DVI 24PIN CONN F WITH SCREW Y1 093G 22 51 CRYSTAL 12MHZ HC 49US ARG6 120 CN3 033G801955Y H HC 0 5 PITCH 55P SMT U2 056G 562153CMO IC NT68670HTFG QFP 128 NOVATEK U5 0...

Page 50: ...M 5 1 16W R16 061G0402101 RST CHIPR 100 OHM 5 1 16W R15 061G0402101 RST CHIPR 100 OHM 5 1 16W R37 061G0402102 RST CHIPR 1 KOHM 5 1 16W R38 061G0402102 RST CHIPR 1 KOHM 5 1 16W R48 061G0402102 RST CHIPR 1 KOHM 5 1 16W R69 061G0402102 RST CHIPR 1 KOHM 5 1 16W R82 061G0402102 RST CHIPR 1 KOHM 5 1 16W R96 061G0402102 RST CHIPR 1 KOHM 5 1 16W R90 061G0402103 RST CHIPR 10 KOHM 5 1 16W R81 061G0402103 RS...

Page 51: ...16W R21 061G0402332 RST CHIPR 3 3KOHM 5 1 16W R23 061G0402332 RST CHIPR 3 3KOHM 5 1 16W R50 061G0402332 RST CHIPR 3 3KOHM 5 1 16W R51 061G0402332 RST CHIPR 3 3KOHM 5 1 16W R53 061G0402332 RST CHIPR 3 3KOHM 5 1 16W R67 061G0402333 RST CHIPR 33 KOHM 5 1 16W R78 061G0402392 RST CHIP 3 9K 1 16W 5 R2 061G0402392 RST CHIP 3 9K 1 16W 5 R20 061G0402470 0F RST CHIPR 0402 470 OHM 1 1 16W R5 061G0402470 0F R...

Page 52: ...2104 15 MLCC 0402 0 1UF K 16V X5R C61 065G0402104 15 MLCC 0402 0 1UF K 16V X5R C60 065G0402104 15 MLCC 0402 0 1UF K 16V X5R C58 065G0402104 15 MLCC 0402 0 1UF K 16V X5R C42 065G0402104 15 MLCC 0402 0 1UF K 16V X5R C31 065G0402104 15 MLCC 0402 0 1UF K 16V X5R C30 065G0402104 15 MLCC 0402 0 1UF K 16V X5R C3 065G0402104 15 MLCC 0402 0 1UF K 16V X5R C28 065G0402104 15 MLCC 0402 0 1UF K 16V X5R C25 065...

Page 53: ...9S330 Y CHIP BEAD 0603 33OHM 25 1 2A B2 071G 59S330 Y CHIP BEAD 0603 33OHM 25 1 2A B3 071G 59S330 Y CHIP BEAD 0603 33OHM 25 1 2A B14 071G 59U601 TS CHIP BEAD 0603 600OHM 25 0 2A D6 093G 64S503CMO BAV70W SOT 323 SC 70 PAN JIT CMO D1 093G 64S503CMO BAV70W SOT 323 SC 70 PAN JIT CMO D5 093G3004 3 SM340A 715G3053 1 2 MAIN BOARD PCB Q85G 583603 GASKET_ALUMINIUM FOIL Q85G 583605 GASKET_ALUMINIUM FOIL KEP...

Page 54: ...LET Q34G0604AFQ 1B0100 HINGE COVER Q40G 19N709 4A RATING LABEL Q40G0001624 4A PALLET LABEL Q40G000270928A WARNING LABEL Q44G6002CP1A06 PAPER CAP Q44G9169101 EPS Q44G9169201 EPS Q44G9169709 1A 19W LCD VSC CARTON Q45G 77 5 PE PACKING Q50G 4 10 TIE Q41G780070962A RETURN PREVENTION FLYER Q41G780070963A VX1962 QSG USA Q41G780070964A SERVICE INSERT Q41G780070965A BASE ASSEMBLY PRODUCE CARD Q41G780070966...

Page 55: ...D N34G0207AFQ 1B0102 BASE N34G0213AFQ 1B0102 REAR COVER N33G0082BDN 1L KEYPAD N34G0201AFQ 1B0102 BEZEL L19WA 7VSC6 N34G0202BDN 1B DECORATION N34G0204BDN 1B0119 STAND_L N34G0205BDN 1B0119 DECORATION_STAND_R N34G0208BDN 1B0119 SEAT_L N34G0209BDN 1B0119 SEAT_R Q40G 19N709 5A RATING LABEL Q44G9169709 2A 19W LCD VSC CARTON Q41G780070958A VISTA INSATALL CARD Q70G9002709 2A VX1962 CD USA ...

Page 56: ...nt Procedure 6 Troubleshooting Flow 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 manua...

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