ViewSonic VLCDS27955-1W User Manual Download | Manualshive

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Model No.

V

L

CD

S

279

55

-1W

/-2W

1

5

”

Color

TFT LCD Display

Service Manual

ViewSonic

VG510b/s

-1

ViewSonic

381 Brea Canyon Road, Walnut, California 91789 USA - (800) 888-8583

(

V

G510

b/s

_

SM_

722

Rev. 1

a

Apr.

200

4

)

1
2
3
...
»

Summary of Contents for VLCDS27955-1W

Page 1: ...Model No VLCDS27955 1W 2W 15 Color TFT LCD Display Service Manual ViewSonic VG510b s 1 ViewSonic 381 Brea Canyon Road Walnut California 91789 USA 800 888 8583 VG510b s_SM_722 Rev 1a Apr 2004 ...

Page 2: ...ereof and specifically disclaims any warranty of merchantability 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 ViewSonic is a registered trademark of ViewSonic Corporation All other trademark...

Page 3: ... Trouble Shooting Flow Chart 9 Block Diagram 10 Schematic Diagrams 7 Recommended Spare Parts List 1 Precautions and Safety Notices 5 Adjusting Procedure 8 Exploded Diagram And Spare Parts List 11 PCB Layout Diagrams 1 2 5 7 8 9 14 22 24 25 33 ii ViewSonic Corporation Confidential Do Not Copy VG510b s ...

Page 4: ...tion slots and openings with objects or install the display in a place where ventilation may be hindered Do not install this display near a motor or transformer where strong magnetism is generated Images on the display will become distorted and the color irregular Do not allow metal pieces or objects of any kind fall into the display from ventilation holes Slots and openings in the cabinet and the...

Page 5: ...ilt 20 5 Contrast ratio 350 1 typ 250 1 min Brightness 250 cd m2 typ 200 cd m2 min Response time 25ms typ tr tf 60ms max tr tf Active display area 304 1 mm H x228 1mm V AC DC adapter Input AC 100 240V 50 60 Hz Output 12 V DC Input signal Video Analog 0 7 Vp p 75 ohms Sync TTL Level Positive Negative Separate Sync Input connector 15 Pin D Sub Power management yes Dimensions WxHxD 34 6 cm x 35 5 cm ...

Page 6: ...z 53 7kHz 12 832 x 624 75Hz 49 7kHz 13 1024 x 768 60Hz 48 4kHz 14 1024 x 768 70Hz 56 5kHz 15 1024 x 768 72Hz 58 1kHz 16 1024 x 768 75Hz 60 0kHz 2 3 D SUB CONNECTOR This section describes the pin assignment of the LCD s video connector It is called 15 Pin Pin NO Signal Connector 1 Red Video Signal 2 Green Video Signal 3 Blue Video Signal 4 N C 5 Ground 6 Ground 7 Ground 8 Ground 9 5V 10 Ground 11 N...

Page 7: ...rved 5 Reserved No connection 6 DDC CLK DDC2B Clock 7 DDC DAT DDC2B Data 8 Reserved 8 Reserved No connection 9 RX1 TMDS negative differential input channel 1 10 RX1 TMDS positive differential input channel 1 11 GND Logic Ground 12 Reserved 12 Reserved No connection 13 Reserved 13 Reserved No connection 14 VCCX Power 15 GND Logic Ground 16 SENS SENSE Pin Pull High 17 RX0 TMDS negative differential ...

Page 8: ...5 ViewSonic Corporation Confidential Do Not Copy VG510b s 3 Front Panel Function Control Description ...

Page 9: ...LOCK AND UNLOCK press two buttons 1 DOWN simultaneously for 10 seconds 11 ALL RESET First power off the monitor un plug the AC cord then press 2 key at the same time and 12 FACTORY MODE First power off the monitor un plug the AC cord and be sure the signal cable is connected D sub connected then press key at the same time and plug the AC cord 13 RUN IN MODE First power off the monitor up plug the ...

Page 10: ...ernal ADC PLL The MV3 has robust handling of a wide variety of TFT LCD panels and strong support of standard or non standard input timings Integrated high speed triple 8 bit ADC PLL support up to 140MHz for XGA 75Hz Advanced image processing with proprietary non linear parametric cubic based scaling engineSupport dual interface with an integrated ADC PLL Robust auto configuration for input mode de...

Page 11: ...or un plug the AC cord and be sure the signal cable is connected D sub connected then press 2 key at the same time and plug the AC cord to factory 5 Adjusting Procedure 8 ViewSonic Corporation Confidential Do Not Copy VG510b s ...

Page 12: ...l 1 Check Scaler H V sync correct 2 Measure at Scaler side Check Inverter Green Check H V sync at 7414 output Orange Check Scaler OK 1 Scaler no power 2 Scaler changed no OSC Abnormal Check input source Check 7414 Green Orange Check DC power 12V 5V 3 3V 2 5V MCU 3 3V Check MCU crystal Check MCU or Reprogram MCU B 6 Trouble Shooting Flow Chart 9 ViewSonic Corporation Confidential Do Not Copy VG510b...

Page 13: ...e too big Absent of H V sync of scaler O P or short CKT OSD distorted Backlight off after one second Picture normal then panel burn 1 DC power source no enough 2 Backlight wire short CKT 3 Inverter shut down 1 LVDS no enable or enable polarity error 2 LVDS CKT not assembled ok 3 Scaler O P CKT not assembled ok Yes No Yes No Panel power abnormal Yes No No No Yes Yes No No Yes 10 ViewSonic Corporati...

Page 14: ...k Reset waveform when power on No pulse Check Reset CKT Check if O P short to GND A pulse to 3V Yes No Check if MCU pin short or bend Check if socket pin bend No No MCU bad Yes Yes If input over MCU 3 3 0 3V Yes No Reflow Check 4 corner are shorted or not Be carefully when using probe to measure Change socket Not allowed 11 ViewSonic Corporation Confidential Do Not Copy VG510b s ...

Page 15: ...g Yes Check VGA cable 1 Too long 2 Quality no good Measure R G B input use block pattern No Noisy 1 VGA cable quality bad 2 Power 3 3V 2 5V have big noise Yes No Scaler O P or LVDS I P short or open Use 32 or 64 gray scale Noise at certain scale for more than one color LVDS O P short or open 12 ViewSonic Corporation Confidential Do Not Copy VG510b s ...

Page 16: ...apter Measure adapter only Adapter ok Change adapter Measure 12V to GND Yes No Remove FB4 FB7 D33 No 5V ok Yes No 5V short to GND or 3 3V 12V 5V regulator CKT no work No 3 3V 2 5V short to GND MCU 3 3V bad Yes PC 5V DC 3 3V CKT not correct 13 ViewSonic Corporation Confidential Do Not Copy VG510b s ...

Page 17: ...OSM1069D8 BOSS FOR D SUB AND DVI BOSS FOR D SUB AND DVI 23 M BK 0805 0012 LANGF2063D8 A KENSINGTON BRACKET KENSINGTON BRACKET 24 B CB 0206 0169 DPWBN5570T8 OSD SW BOARD ASS Y OSD SW BOARD ASS Y 25 A AD 0114 0212 RUNTP5579D8 AC ADAPTOR VSC 12V 3 3A AC ADAPTOR VSC 12V 3 3A 26 A CD VG510B DDSKC0043D8 INF FILE DEVICE INF FILE DEVICE 27 A VC 0101 0271 QCODS1584D8D SIGNAL CABLE SIGNAL CABLE 28a Old Vend...

Page 18: ... M MS 0808 5840 LBOSM1069D8 BOSS FOR D SUB AND DVI BOSS FOR D SUB AND DVI 23 M BK 0805 0012 LANGF2063D8 A KENSINGTON BRACKET KENSINGTON BRACKET 24 B CB 0206 0169 DPWBN5570T8 OSD SW BOARD ASS Y OSD SW BOARD ASS Y 25 A AD 0114 0212 RUNTP5579D8 AC ADAPTOR VSC 12V 3 3A AC ADAPTOR VSC 12V 3 3A 26a Old Vendor P N A CD VG510B DDSKC0043D8 INF FILE DEVICE INF FILE DEVICE 26b New Vendor P N A CD VG510B DDSK...

Page 19: ... N A LX BZ1717D8 SCREW FOR INVERTER 4 I F SHIELD 6 10 38 N A PCUSG1636D8 EVA LABEL EVA FOR VESA METAL 1 39 M MS 0808 9385 PCUSG1638D8 CUSHION FOR CAB B CUSHION FOR CAB B 1 40 A AD 0114 0212 RUNTP5579D8 AC ADAPTOR VSC 12V 3 3A AC ADAPTOR VSC 12V 3 3A 1 41 N A TLAB 5532D8 MODEL LABEL MODEL LABEL 1 42 A UG 0107 0533 TINSE3073D8 USER S MANUAL USER S MANUAL 1 43 A CD VG510B DDSKC0043D8 INF FILE DEVICE ...

Page 20: ...UF 20 16V C1 C11 C160 C38 C39 C40 6 12 N A PRDA 1252D8 RADIATOR FOR U3 HEAT SINK FOR U3 1 13 E IC 0401 2922 VSIMTV312M64 S MCU IC MTV312M64 U7 1 14 N A QPWB 5559T8 1 I F BOARD I F BOARD 1 15 E IC 0401 3972 VSIMVXRL A Mstar Scaler IC MRT VXRL U13 SCALER IC 1 16 E IC 0401 2118 VSIAIC1084 33 A Power Regulator 3 3V IC AIC1084 33 U1 1 17 M MS 0808 8003 QSOCI1642T844 IC SOCKET 44PIN U7 44 PIN IC SOCKET ...

Page 21: ...36 C 61 C81 12 62 N A VCEABN1CX106M A C 10UF 20 50V C150 C154 C155 C164 C4 C7 C99 10UF 16V 7 63 N A VCEABN1CX107M A C 100UF 20 50V C103 C14 C22 C30 C59 C92 100UF 16V 6 64 N A VCICHN1CG153J A C 015UF 5 50V C139 1 65 N A VCEABN1CX226M A C 22UF 5 50V C108 C141 C17 C25 C33 22UF 16V C8 6 66 N A VCICHN1HG472K A C 47PF 10 50V C117 C12 C121 C28 47UF 16V 4 67 N A VCEABN1CX476M A C 47UF 20 50V C117 C12 C121...

Page 22: ... PCUSG1636D8 EVA LABEL EVA FOR VESA METAL 1 39 M MS 0808 9385 PCUSG1638D8 CUSHION FOR CAB B CUSHION FOR CAB B 1 40 A AD 0114 0212 RUNTP5579D8 AC ADAPTOR VSC 12V 3 3A AC ADAPTOR VSC 12V 3 3A 1 41 N A TLAB 5532D8 MODEL LABEL MODEL LABEL 1 42 A UG 0107 0534 TINSE3075D8 USER S MANUAL USER S MANUAL 1 43 A CD VG510B DDSKC0044D8 INF FILE DEVICE INF FILE DEVICE 1 44 A VC 0101 0271 QCODS1584D8D SIGNAL CABL...

Page 23: ...4 S MCU IC MTV312M64 U7 1 14 N A QPWB 5559T8 1 I F BOARD I F BOARD 1 15 E IC 0401 3972 VSIMVXRL A Mstar Scaler IC MRT VXRL U13 SCALER IC 1 16 E IC 0401 2118 VSIAIC1084 33 A Power Regulator 3 3V IC AIC1084 33 U1 1 17 M MS 0808 8003 QSOCI1642T844 IC SOCKET 44PIN U7 44 PIN IC SOCKET 1 18 N A QCNCP1979T8 CONNECTOR 30PIN CON5 30 PIN PLUG 1 19 N A QCNCD1161T8 CONNECTOR DVI CN1 CON DVI 1 20 M MS 0808 899...

Page 24: ...4 C155 C164 C4 C7 C99 10UF 16V 7 63 N A VCEABN1CX107M A C 100UF 20 50V C103 C14 C22 C30 C59 C92 100UF 16V 6 64 N A VCICHN1CG153J A C 015UF 5 50V C139 1 65 N A VCEABN1CX226M A C 22UF 5 50V C108 C141 C17 C25 C33 22UF 16V C8 6 66 N A VCICHN1HG472K A C 47PF 10 50V C117 C12 C121 C28 47UF 16V 4 67 N A VCEABN1CX476M A C 47UF 20 50V C117 C12 C121 C28 47UF 16V 4 68 N A VCLFHN1CG105Z A C 1UF 80 20 50V C161 ...

Page 25: ...N 2916D8F BASE 1 19 M BK 0805 0032 LANGF2132D8 BASE METAL 1 20 M LCD 0826 0180 VVLLQ150X1LGN2 SHARP PANEL 15 1 21 M MS 0808 9117 PGUM 1124D8 VESA GUM 1 Item ViewSonic P N Ref P N Location Q ty 1 M MS 0808 9118 HBDGE1389D8 VIEWSONIC TEXT LOGO 1 2 M MS 0808 9113 GCABA2331D8FT1C CAB A 1 3 E SK 0412 0085 RSPKCL034D88FG SPEAKER 1 4 M MS 0808 9115 HDECP1987D8F LENS 1 5 PL NB 0707 1072 JKNBP2358D8F KNOB ...

Page 26: ...23 ViewSonic Corporation Confidential Do Not Copy VG510b s ...

Page 27: ...PTOR 12V 15 LCD PANEL 3 3V 2 5V 5V SW BOARD DPWBN5570T8 CON1 SCALER INVERTER RUNTP5475T8 B CON1 C O N U8 EEPROM 24C16 X1 OSC 12MHz JP6 QCNWS0905 8028 CON2 CON3 QCODS1695T8 CN2 TO PANEL J1 DB15 COMPUTER GRAPHICS X2 OSC 12MHz DDC U5 EEPROM 24C21 QCNWS0906 8026A VG510 Block Diagram 9 Block Diagram 24 ViewSonic Corporation Confidential Do Not Copy VG510b s ...

Page 28: ... 10nF C10 10nF U4 AC1501 50 1 2 4 5 3 VIN VOUT VOS S S GND C22 100uF 16v FB3 1812 C15 0 1uF C7 10uF 16V MODEL UPDATE P R REV Nr DWG No PWB No M P VG510s VG510b PWB 5559 Sheet 5 8 Sep 25 2003 00 Power C37 0 1uF C42 0 1uF C2 0 1uF NC FB6 0603 FB2 0603 C14 100uF 16v FB8 1812 FB4 1206 F1 4A SMD C39 470uF 16v DIP FB11 0805 C33 22uF C34 0 1uF C35 10nF C31 0 1uF C29 0 1uF C32 10nF U3 AIC1117 2 5 3 2 1 VI...

Page 29: ... 1 3 2 FB13 0 1 2 C166 0 1UF C45 0 1uF C167 0 1UF R25 75 U6 74LVC14 1 2 3 4 5 6 7 8 9 10 11 12 13 14 A1 B1 A2 B2 A3 B3 GND B4 A4 B5 A5 B6 A6 VCC D4 BAV99 1 3 2 J1 DB 15 1 2 3 4 5 10 9 8 7 6 11 12 13 14 15 1 2 3 4 5 10 9 8 7 6 11 12 13 14 15 R21 75 R17 75 R16 33 R15 BEAD 30 R19 BEAD 30 C168 1UF 0805 D3 ZD5 6V 1 2 D8 ZD5 6V 1 2 R18 33 C47 0 1uF R20 33 C48 0 1uF D7 ZD5 6V 1 2 R22 33 C50 0 1uF R24 33 ...

Page 30: ... HCLAMP VBLANK P4 0 HBLANK P4 1 DA9 HALFV DA8 HLFHO DA5 P5 5 DA4 P5 4 DA3 P5 3 HSYNC VSYNC P6 7 DA13 VDD P6 3 AD3 Q7 2N3906 3 1 2 R75 100 Q3 2N3906 3 1 2 R86 4 7k R88 4 7k Q6 2N3906 3 1 2 R90 330 R89 330 R62 1M JP4 DEBUG NC 1 2 3 4 5 6 1 2 3 4 5 6 C65 22pF C66 22pF X1 12MHZ D13 1N4148 1 2 D12 1N4148 1 2 C59 100uF 16V Q4 2N3906 3 1 2 MODEL UPDATE P R REV Nr DWG No PWB No M P VG510s VG510b PWB 5559 ...

Page 31: ...2 D17 3 9V 1 2 C92 100uF 25V FB21 1812 NC D18 5 6V 1 2 R111 100 C90 0 1uF R113 20k R115 2K FB24 0 Q10 2N3904 1 3 2 R117 NC FB22 1812 C93 0 1uF FB23 0 R152 3K U10 SI4433ADY 1 2 3 4 8 7 6 5 S1 S2 S3 G1 D1 D2 D3 D4 J2 speaker_out 1 2 3 4 R107 20k C91 0 1uF MODEL UPDATE P R REV Nr DWG No PWB No M P VG510s VG510b PWB 5559 Sheet 6 8 Sep 25 2003 00 Audio R153 10k R150 20k R151 20k C162 100uF 25V DIP R110...

Page 32: ...5 6 7 8 NC NC NC VSS SDA SCK VCLK VCC D22 ZD5 6V 1 2 D25 BAV99 1 3 2 D19 DAN202U 3 2 1 FB27 221A R125 4 7k D26 BAV99 1 3 2 D27 BAV99 1 3 2 R118 4 7k R119 4 7k R126 4 7k CN1 CON DVI 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 31 32 TX2 TX2 SHIELD1 TX4 TX4 DDC CLK DDC DATA VSYNC TX1 TX1 SHIELD2 TX3 TX3 5V GND HP Detect TX0 TX0 SHIELD3 TX5 TX5 TXC SHIELD TXC TXC R...

Page 33: ... C110 0 1uF C105 100uF 16V R130 4 7k C112 0 1uF R132 330 C111 22uF 16V RP2 33 4 1 8 2 7 3 6 4 5 Q13 BSH107 1 3 5 2 4 6 RP3 33 4 1 8 2 7 3 6 4 5 R133 680 Q12 2N3904 1 2 3 C104 0 1uF C107 0 1uF FB30 1812 C103 100uF 16V R128 4 7k MODEL UPDATE P R REV Nr DWG No PWB No M P VG510s VG510b PWB 5559 Sheet 4 8 Sep 25 2003 00 Output Connector C109 0 1uF R129 330 C108 22uF 16V MTG4 THROUGH HOLE 4 5 6 7 1 2 3 ...

Page 34: ...CN RXCP AGNDC AVDD0 RX0N RX0P AGND0 GND0 VDD0 AVDD1 RX1N RX1P GND1 VDD1 AVDD2 RX2N RX2P AGND2 GND2 VDD2 DGND DGND DVDD DCVDD2V DCVSS VDD3V DGND DTEST VDD2V VGA_VSYNC VGA_HSYNC VAA2V GNDA SOGIN VAA3V AGND VREF CP CZ VAA3B BIN BIN AGNDB BCLP VTOP VBOT VAA3G GIN GIN AGNDG GCLP TOUTP TOUTM VAA3R RIN RIN AGNDR RCLP ADVDD3V ADVSS XTAL XTALI DOBVSS GPIO1 GPIO0 PWM1 STH1 STH8 LP DOBVDD3V SHC RLS POL DCVDD...

Page 35: ...EL UPDATE P R REV Nr DWG No PWB No M P VG510s VG510b PWB 5570 Sheet 8 8 Sep 25 2003 00 Key Board C3 100pF JP7 1 2 3 4 5 6 S8 MUTE 1 3 4 2 5 C2 100pF C1 100pF S5 MENU 1 3 4 2 5 GRN AMB LED 1 2 3 S4 1 3 4 2 5 S6 VOL 1 3 4 2 5 S7 VOL 1 3 4 2 5 S1 POWER 1 3 4 2 5 S2 ENTER 1 3 4 2 5 S3 1 3 4 2 5 R7 10K R6 47K R5 22K R4 5 1K R3 47K R2 22K R1 5 1K 32 ViewSonic Corporation Confidential Do Not Copy VG510b ...

Page 36: ...11 PCB Layout Diagrams Main Board 33 ViewSonic Corporation Confidential Do Not Copy VG510b s ...

Page 37: ...Control Board 34 ViewSonic Corporation Confidential Do Not Copy VG510b s ...

Page 38: ...g VG510b s Service Manual m e t I t n e l l e c x E d o o G r i a F d a B 1 2 3 t i n U r i a F d a B 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 d o o G t n e l l e c x E Precautions And Safety Notices 1 8 Exploded Diagram and Spare Parts List 7 Recommended Spare Parts List Adjusting Procedure 2 Spe...

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