ViewSonic VE1920wmb-1 Service Manual Download

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Model

Title

Date

Rev:

ViewSonic Corporation

FB0N
FB0P
FB1N
FB1P
FB2N
FB2P

FG0N
FG0P
FG1N
FG1P
FG2N
FG2P

FR0N
FR0P
FR1N
FR1P
FR2N
FR2P

BB0N
BB0P
BB1N
BB1P
BB2N
BB2P

BG0N
BG0P
BG1N
BG1P
BG2N
BG2P

BR0N
BR0P
BR1N
BR1P
BR2N
BR2P

FCKP
FCKN
BCKP
BCKN

BSTH
FSTH
GVOFF
STB
STV
CPV
OE

POL

SAR1
SAR2

LED_GL

LED_OR

DCDC_ON/OFF

GNDR

RIN

GNDG

GIN

GNDB

BIN

SOG

VSYNC

HSYNC

DDCA_CLK

R+
R-
G+
G-
B+
B-
CLK+
CLK-

DDCD_DAT

SAR2

SAR1

DDCA_DAT

DDCD_CLK

WP
WP

DVI

DSUB

DVI

FB0N
FB0P
FB1N
FB1P
FB2N
FB2P

FG0N
FG0P
FG1N
FG1P
FG2N
FG2P

FR0N
FR0P
FR1N
FR1P
FR2N
FR2P

BB0N
BB0P
BB1N
BB1P
BB2N
BB2P

BG0N
BG0P
BG1N
BG1P
BG2N
BG2P

BR0N
BR0P
BR1N
BR1P
BR2N
BR2P

FCKP
FCKN
BCKP
BCKN

BSTH
FSTH
GVOFF
STB
STV
CPV
OE

POL

AUD_DET

VCM_PWM
PANEL_ON/OFF

INV_ON/OFF
INV_ADJ

LED_GL
LED_OR
VOL_ADJ

DCDC_ON/OFF

GNDR

RIN

GIN

GNDG

BIN

GNDB

SOG

VSYNC

HSYNC

DDCA_DAT
DDCA_CLK

R+
R-
G+
G-
B+
B-

CLK+

CLK-

DDCD_DAT
DDCD_CLK

V33C

V18C

V5A

AUDIO_ON

RIGHT

POWER

AUTO

LEFT

TURBO

VCTRL

AUTO
POWER

MENU
LEFT
RIGHT

TURBO

V12A

DVI_5V

DSUB_DET

Vref

AVDD

VDDC

VDPP

AVDD

VPLL

VDVI

VMPLL

GND

VDPP

VMPLL

VDVI

GND

VPLL

GND

AVDD

GND

VDDC

VCC18

VCC33

V5A

GND

VCC33

GND

VCC33

GND

VCC33

GND

VCC33

GND

VCC33

GND

Close to respective power Pins

TURBO

RIGHT
+LEFT
+POWER

1.77V

1.24V

0.47V

AUTO

VOLTAGE

0.47V

POWER

1.77V

LEFT

RIGHT

1.24V

SR1(1.77) SR2(0.93)

need to modify, the SAR is
6 bits and the max voltage
is 1.8V

C89
0603/100n/25V/7

R114

0603/10K/5%

R114

0603/10K/5%

Y1
14.31818MHz

C74

1206/10u/16V/X/PbF

C74

1206/10u/16V/X/PbF

C59
0603/100n/25V/7

R108

0603/10K/5%

R108

0603/10K/5%

VDDC1

C87
0603/100n/25V/7

R112

0603/10K/5%/OPEN

R112

0603/10K/5%/OPEN

R118

R0603/OPEN

R118

R0603/OPEN

C55

1206/10u/16V/X/PbF

C55

1206/10u/16V/X/PbF

C66
0603/100n/25V/7

C75
0603/100n/25V/7

L13

C91

0603/100n/25V/7

C91

0603/100n/25V/7

R214

0603/0R/5%/open

R214

0603/0R/5%/open

C84
1206/4.7u/16V/Y

C90

0603/100n/25V/7

C90

0603/100n/25V/7

C81
0603/100n/25V/7

R113

0603/10K/5%

R113

0603/10K/5%

C78

1206/10u/16V/X/PbF

C78

1206/10u/16V/X/PbF

R213

0603/0R/5%/open

R213

0603/0R/5%/open

C80

1206/10u/16V/X/PbF

C80

1206/10u/16V/X/PbF

RIN0P

GIN0P

SOGIN0

BIN0P

RIN0N

GIN0N

BIN0N

HSYNC0

VSYNC0

REXT

REFP

REFM

SDO

SCK

SCZ

SDI

GPIO_P27/PWM1

PWM1/GPIO_P25

NC/LVACKM/NC

108

XIN

XOUT

RA1P/LVA2P/RA2

109

RA1N/LVA2M/RA3

110

RA2P/LVA1P/RA4

111

RA2N/LVA1M/RA5

112

RA3P/LVA0P/RA6

113

RA3N/LVA0M/RA7

114

CLKAP/LVB3P/LHSYNC

118

CLKAN/LVB3M/LVSYNC

119

CLKBP/LVBCKP/LCK_ODD

120

CLKBN/LVBCKM/LDE

121

NC/LVB2P/NC

122

NC/LVB2M/NC

123

BB1P/LVB1P/BB2

124

BB1N/LVB1M/BB3

125

BB2P/LVB0P/BB4

126

BB2N/LVB0M/BB5

127

NC/LVACKP/NC

107

GA3N/LVA3M/GA7

106

GA3P/LVA3P/GA6

105

GND

RX2P

RX2N

RX1P

RX1N

AVDD_DVI

RX0P

RX0N

RXCKP

RXCKN

GND

116

VDDP

VDDC

MODE[1]

104

MODE[0]

102

VCTRL

VDDP

VDD_OTP

DDCA_SDA/RS232_Tx

DDCA_SCL/RS232_Rx

DDCD_SDA

DDCD_SCL

PWM0/GPIO_P26

AVDD_DVI

VDDC

GPIO_P15/PWM0

PWM2/GPIO_P24

GPIO_P12

RSTN

GPIO_P00/SAR1

GPIO_P01/SAR2

GPIO_P06

GPIO_P07

GPIO_P13

GPIO_P14

GPIO_P16/PWM2

DDCROM_SDA

DDCROM_SCL

RST

GA2P/NC/GA4

100

GA2N/NC/GA5

101

GA1P/NC/GA2

GA1N/NC/GA3

BA3P/NC/BA6

BA3N/NC/BA7

BA2P/NC/BA4

BA2N/NC/BA5

BA1P/NC/BA2

BA1N/NC/BA3

RB1P/NC/RB2

RB1N/NC/RB3

RB2P/NC/RB4

RB2N/NC/RB5

RB3P/NC/RB6

RB3N/NC/RB7

GB1P/NC/GB2

GB1N/NC/GB3

GB2P/NC/GB4

GB2N/NC/GB5

GB3P/NC/GB6

GB3N/NC/GB7

BB3P/NC/BB6

128

BB3N/NC/BB7

ESP

OSP

GPO0

GPO1

GPO2

GPO3

GPO4

GPO5

GPO6

GPIO_P02/SAR3

GPIO_P03

GPIO_P22

GPIO_P23

AVDD_PLL

AVDD_MPLL

VDDP

103

VDDP

115

VDDC

117

AVDD_ADC

GND

TSUM57AK

C92
0603/100n/25V/7

R201

0603/10M/5%/RoHS/OPEN

R201

0603/10M/5%/RoHS/OPEN

R200

0603/10M/5%/RoHS/OPEN

R200

0603/10M/5%/RoHS/OPEN

C56
0603/100n/25V/7

C77
0603/100n/25V/7

R110

0603/100R/5%

R110

0603/100R/5%

C79
0603/100n/25V/7

VPLL1

C68

0603/100n/25V/7

C68

0603/100n/25V/7

L10

R105

0603/100R/5%

R105

0603/100R/5%

R107

0603/10K/5%

R107

0603/10K/5%

C152

0805/10u/6.3V/5/open

C152

0805/10u/6.3V/5/open

R124

0603/390R/1%

R124

0603/390R/1%

C93

0603/22p/50V/N

C93

0603/22p/50V/N

R209

OPEN/R0603

R209

OPEN/R0603

C70

0603/10n/25V/7/RoHS

C70

0603/10n/25V/7/RoHS

VDPP1

GPO51

R109

0603/10K/5%

R109

0603/10K/5%

R115

0603/10K/5%

R115

0603/10K/5%

R116

0603/10K/5%

R116

0603/10K/5%

R127
0603/20K/1%/OPEN

R138

0603/23.2K/1%/OPEN

R138

0603/23.2K/1%/OPEN

C94

0603/22p/50V/N

C94

0603/22p/50V/N

R111

0603/10K/5%

R111

0603/10K/5%

C85
0603/100n/25V/7

R67

0603/12.1K/1%/OPEN

R67

0603/12.1K/1%/OPEN

L12

HCB2012KF-420T40

L12

HCB2012KF-420T40

R212
0603/1K/5%

L14

C65

1206/10u/16V/X/PbF

C65

1206/10u/16V/X/PbF

C76

1206/10u/16V/X/PbF

C76

1206/10u/16V/X/PbF

R140

0603/3.3K/1%/OPEN

R140

0603/3.3K/1%/OPEN

C58
0603/100n/25V/7

C86
0603/100n/25V/7

Q7
MMBT3904-F

C88 0603/100n/25V/7

R117

0603/100R/5%

R117

0603/100R/5%

VMPLL1

CE#

SDO

WP#

VSS

SDI

SCK

HOLD#

VDD

Pm25LV512

R101

0603/100R/5%

R101

0603/100R/5%

SAR11

AVDD1

R1000603/100R/5%

R128

0603/23.2K/1%/OPEN

R128

0603/23.2K/1%/OPEN

C67
0603/100n/25V/7

R137
0603/20K/1%/OPEN

C150

0805/10u/6.3V/5/open

C150

0805/10u/6.3V/5/open

VCC

SCL

SDA

GND

AT24C16AN-10SU-2.7/RoHS

VDVI1

R119

R0603/OPEN

R119

R0603/OPEN

R103

0603/100R/5%

R103

0603/100R/5%

R210

0603/30K/5%

R210

0603/30K/5%

C60
0603/100n/25V/7

R120

0603/10K/5%

R120

0603/10K/5%

C57
0603/100n/25V/7

L11

R102
0603/4.7K/0.1%/RoHS

R122

0603/10K/5%/open

R122

0603/10K/5%/open

R104

0603/100R/5%

R104

0603/100R/5%

R79

0603/20K/1%/OPEN

R79

0603/20K/1%/OPEN

OUT

VDD

VSS

RN5VD40AA/RoHS

R139

0603/12.1K/1%/OPEN

R139

0603/12.1K/1%/OPEN

R106

0603/10K/5%

R106

0603/10K/5%

SAR21

L17

R121

0603/100R/5%

R121

0603/100R/5%

R134

0603/3.3K/1%/OPEN

R134

0603/3.3K/1%/OPEN

ViewSonic Corporation

Confidential - Do Not Copy

VE1920wmb-2

SCALER

Summary of Contents for VE1920wmb-1

Page 1: ...ViewSonic VE1920wmb 2 Model No VS10866 19 Color TFT LCD Display VA1920wmb 2_SM Rev 1a Aug 2006 ViewSonic 381 Brea Canyon Road Walnut California 91789 USA 800 888 8583 Service Manual...

Page 2: ...expressed or implied with respect to the contents hereof and specifically disclaims any warranty of merchantability or fitness for any particular purpose Further ViewSonic reserves the right to revise...

Page 3: ...Notices 1 2 Specification 3 3 Front Panel Function Control Description 7 4 Circuit Description 11 5 Adjustment Procedure 12 6 Troubleshooting Flow Chart 32 7 Recommended Spare Parts List 40 8 Exploded...

Page 4: ...Wipe off water drops 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...

Page 5: ...cover of the monitor Do not touch the surface of the polarizer Surface of the panel is pressed by fingers this may cause MURA Take out the monitor with cushion Take out the monitor by grasping the LC...

Page 6: ...ive Off Mode Max 1W Audio Amplifier Speaker 1 5 W 2 5W x 2 Tilt 20 to 5 Yes Swivel No Pivot No Ergonomics Height Adjust 0 100mm OSD Control X 1 2 Yes Physical W x H x D mm 451 x 426 x 221 mm 17 8 x 16...

Page 7: ...the image vertical position should be at the center Exclusions Not compatible with interlaced video POWER SUPPLY Power Supply Adapter Part Number 27 D003247 Input Voltage Range 90 to 264 VAC Input Fr...

Page 8: ...2 W typ ACTIVE OFF 1 W Recovery Time ON Mode N A ACTIVE OFF 5 sec ELECTRICAL REQUIREMENT Horizontal Vertical Frequency Horizontal Frequency 30 82 kHz Vertical Refresh Rate 50 85 Hz Maximum Pixel Clock...

Page 9: ...be full screen Primary Presets 1440 x 900 60Hz User Presets Number of User Presets recognized timings Available 10 presets total in FIFO configuration Changing Modes Maximum Mode Change Blank Time for...

Page 10: ...tton 2 and Mute Button must be one shot logic operation i e there should be no cycling Reaction Time OSD must fully appear within 0 5s after pushing Button 1 Short Cuts Function from the button s 1 Ma...

Page 11: ...then tries to access the OSD by pressing any of the buttons 1 2 a message will appear on the screen for 3 seconds showing OSD Locked The OSD lock will be deactivated by pressing the front panel contr...

Page 12: ...otice OSD 0 Touch Function Actions 1 Execute Auto Image Adjust when new mode detected and save the settings to buffer for further use 2 It should be reset by Memory Recall function Should not reset by...

Page 13: ...6500K 5400K 5000K Red Green Color Adjust User Color Blue Information Horizontal Size H Position H V Position V Position Fine Tune Manual Image Adjust Sharpness English French German Spanish Italian F...

Page 14: ...apability for green mode requirements and spread spectrum support for EMI management The TSUM57AK incorporates the world s first coherent oversampled RGB graphics ADC in a monitor controller system Th...

Page 15: ...onitor keypad to Auto Adjust C The LCD monitor will start the Auto Adjust process automatically and run for 10 consecutive seconds during which time you will notice the image change 3 Firmware Test Pa...

Page 16: ...tern Window standard pattern Inspection Item Bright Dot Line Defect Power 11 RED Test Signal 1280 1024 60Hz Test Pattern Full Screen Red Inspection Item Bright Dot Partial Line Defect 12 Green Test Si...

Page 17: ...64 256 Gray Scale From 0 to 100 White Figure 1 2 Gray_Scale_0 100_H Horizontal 64 256 Gray Scale From 0 to 100 White Figure 2 3 Black Full Screen Black Figure 3 4 Red Full Screen 50 Red Figure 4 5 Gre...

Page 18: ...15 ViewSonic Corporation Confidential Do Not Copy VE1920wmb 2 Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6 Figure 7 Figure 8...

Page 19: ...ar ISP Tool User Manual Setp1 Take the cable of Print Port to connect Print Port of PC and Print Port of fixture and EDID burn in the same fixture to connect VGA Cable between D sub of fixture and D s...

Page 20: ...connect into ISP mode display the model of Flash The dialog of figure is displayed Device Type is Pm25LV512 then press Step 4 Press Read then enter as below figure then press to down load the program...

Page 21: ...o into below figure that display the value of BIOS Checksum below figure is displayed 0x1626 then press Run to execute the BIOS procedure The BIOS procedure is displayed the message Verify OK that the...

Page 22: ...19 ViewSonic Corporation Confidential Do Not Copy VE1920wmb 2 Step 7 When select ReConnect and press Run then repeat to connect the mode of ISP into next the action of BIOS procedure...

Page 23: ...d Assy 1 1 Remove Seat Assy 1 2 Separate Stand Assy Step 1 Press Stand Assy s bottom part in Seat Hinge Step 2 Remove Seat Assy Step 1 Loose and Remove 2 screws Step 2 Remove Stand Assy 20 ViewSonic C...

Page 24: ...o take Bezel and Rear Cover apart Step 2 Loose and Remove 2 screws Step 5 Completed Step 1 Remove Cover Hinge Step 3 Separate Bezel hooks to take Bezel and Rear Cover apart Step 4 Remove Rear Cover 21...

Page 25: ...Step 1 Remove FFC from OSD Board Step 2 Loose and remove 4 screws Step 4 Remove 2 pieces of Backlight wires Step 3 Lift up LCD module and remove bezel Step 5 Remove 2 pieces of Backlight wires 22 Vie...

Page 26: ...Board Step 6 Loose and remove 4 screws Step 7 Loose and remove 2 screws Step 8 Loose and remove 4 screws Step 9 Remove the PCBA Cover Step 1 Loose and remove 4 screws 23 ViewSonic Corporation Confide...

Page 27: ...Completed Step 2 Remove Lips Board Step 3 Remove 2 pieces of FFCs Step 4 Remove the FFC Step 5 Loose and remove 4 screws Step 6 Remove AD PCBA 24 ViewSonic Corporation Confidential Do Not Copy VE1920...

Page 28: ...er Board Step 1 Place new AD Board And fasten 4 fixed screws Step 3 Insert FFC Step 4 Insert 2 pieces of FFCs Step 2 Fasten 4 fixed screws Step 5 Insert new Lips Board 25 ViewSonic Corporation Confide...

Page 29: ...Remove OSD Board Step 1 Separate both Audio Cable Step 2 Take OSD Board apart Step 3 Completed Step 6 Fasten 4 fixed screws Step 7 Completed 26 ViewSonic Corporation Confidential Do Not Copy VE1920wmb...

Page 30: ...ink Step 1 Place New OSD Board Step 2 Insert Audio cable to connectors of New OSD Board Step 1 Join the PCB Cover Step 2 Fasten 4 fixed screws Step 3 Fasten 2 fixed screws Step 3 Completed 27 ViewSoni...

Page 31: ...screws Step 5 Insert 2 pieces of Backlight wires Step 6 Insert 2 pieces of Backlight wires Step 7 Join LCD module and remove bezel Step 8 Fasten 4 fixed screws 28 ViewSonic Corporation Confidential Do...

Page 32: ...8 Rear Cover Assy Assembly Step 10 Completed Step 9 Insert FFC Step 1 Place Rear Cover Step 2 Fasten 2 screws Step 3 Remove Cover Hinge 29 ViewSonic Corporation Confidential Do Not Copy VE1920wmb 2...

Page 33: ...9 Stand Assy Assembly Step 1 Place Seat Assy Step 2 Fasten 4 screws Step 3 Join Seat Assy 30 ViewSonic Corporation Confidential Do Not Copy VE1920wmb 2...

Page 34: ...1 Paste protection film to protect the monitor Figure 1 1 2 Put the monitor in the PE bag and seal the bag with tape Figure 2 1 3 Put the cushions on the monitor Figure 3 1 4 Place the monitor into t...

Page 35: ...Repair Testing Flash Dots Bright Dot Dark Dot Backlight Light Leakage Mura Image Sticking Brightness spot Particle Dot Defect Check Panel Light On Test Next Step Panel Change Should be Performed to L...

Page 36: ...B Change Power B Change Check Panel Display Noise Beat Display Shut Down Beat Display Flicker No Backlight Display Wave B Panel Change Adapter Change Check Adapter Panel Change Should be Performed to...

Page 37: ...No Backlight Check PCBA AD B Change Inverter B Change Power B Change Check Panel Check PCBA Panel Change Power B Change Inverter B Change CNT B Change AD B Change Check PCBA VGA cable DVI cable Check...

Page 38: ...al Weak Line Next Step TEST NG AD B Change Panel Change Horizontal Band Defect C Vertical Band Defect Power Saving Display Abnormal Check PCBA AD B Change Inverter B Change Power B Change Check PCBA A...

Page 39: ...er B Change OSD B Change AC Power Change DC Power CNT Cable Change Adapter Change Check Adapter Check PCBA Check Wire OSD Cable Inverter B Power B Change OSD B Change DC Power CNT Cable Change Adapter...

Page 40: ...ge OSD B Change D sub cable VGA cable DVI cable BIOS Update Abnormal Loudspeaker Check PCBA Check Wire AD B Change CNT B Change No Voice Voice Loss Abnormal Loud L R Abnormal L R Same Volume Check Lou...

Page 41: ...ange CNT B Change Other Abnormal Display Next Step TEST NG Complete TV Function Display Abnormal Panel Change Should be Performed to Level 3 Repair Panel Change Check PCBA Check Wire TV B Change AV Ca...

Page 42: ...ay Mode z Fuzzy Image Adjust Phase z Image too bright Adjust brightness and contrast by OSD z Image too dark Adjust brightness and contrast by OSD z Irregular image Check the signal connection between...

Page 43: ...2 mmx76 2 mm DC 00008035 77 D011986 1 17 CD ROM Menu DC 00008036 76 D011994 1 18 Hardware SCREW 3 P 0 5 mm L 4 mm HW 00000553 42A9930008 16 19 SCREW 3 P 0 5 mm L 4 mm HW 00000553 42A9930008 4 20 SCREW...

Page 44: ...Round Head Phillips Cross Recess Zn Black Screw with Washer Hama Naka Motogawa Shye Ching Green I 4 28 C 00004284 40 D004250 Cover Hinge A190A2 H05 ABS PA757N Black J91A11B5 Fuking Green I 1 29 C 000...

Page 45: ...AK01 PANEL ASSY 1 3 N A 41 D004053 BACKLIGHT FRONT COVER 1 4 HW 00000553 42A9930008 SCREW M3 4L 2 5 B 00006039 27 D003247 POWER PCB ASSY 1 6 B 00005705 35 D005062 AD PCB ASSY 1 7 HW 00000553 42A993000...

Page 46: ...Right 1 4 P 00006050 78 D009098 PS Foam Left 1 5 N A Different region refer to BOM Carton 1 6 N A Different region refer to BOM Power Cord 1 7 CB 00004287 32F3018003 Monitor Cable 1 8 CB 00000544 32F2...

Page 47: ...ation Confidential Do Not Copy VE1920wmb 2 9 Block Diagram OSD Key Pad Audio Out D sub Analog Video Speaker AC Power LDO Main Board LIPS Backlight LCD Module DC 5V DVI D Digital Video 5V Signal Audio...

Page 48: ...H VCM_PWM DCDC_ON OFF PANEL_ON OFF INVERTER I F B2 V12A INV_ADJ INV_ON OFF V33C V5A VOL_ADJ AUDIO_ON AUDIOR AUDIOR AUDIOL AUDIOL AUD_DET LED_GL B3 VGA RIN GIN BIN VSYNC GNDR GNDG GNDB DDCA_DAT DDCA_CL...

Page 49: ...36 DDCD_SCL 37 PWM0 GPIO_P26 29 AVDD_DVI 50 VDDC 97 GPIO_P15 PWM0 69 PWM2 GPIO_P24 78 GPIO_P12 20 RSTN 22 GPIO_P00 SAR1 23 GPIO_P01 SAR2 24 GPIO_P06 27 GPIO_P07 28 GPIO_P13 30 GPIO_P14 31 GPIO_P16 PW...

Page 50: ...P2 FBMJ2125HS420 PbF CP5 1210 4 7u 25V 5 RoHS CP5 1210 4 7u 25V 5 RoHS R13 0603 4 7K 5 RoHS R13 0603 4 7K 5 RoHS R11 0603 10K 5 OPEN R11 0603 10K 5 OPEN LP3 FBMJ2125HS420 PbF LP3 FBMJ2125HS420 PbF R18...

Page 51: ...3 2K 1 1 2 3 D7 BAV70W open D7 BAV70W open C43 0603 100n 25V 7 RoHS C43 0603 100n 25V 7 RoHS 1 2 D9 B240A F D9 B240A F GND 1 VOUT 2 VIN 3 VOUT 4 U6 LM1117MPX 3 3 RoHS U6 LM1117MPX 3 3 RoHS C45 0603 10...

Page 52: ...S D1 0603 10p varistor OPEN D1 0603 10p varistor OPEN C15 0603 1n 16V 7 C15 0603 1n 16V 7 L20 0603 0R 5 RoHS L20 0603 0R 5 RoHS C123 0603 47n 16V 7 RoHS C123 0603 47n 16V 7 RoHS R34 0603 56R 1 R34 060...

Page 53: ...3 0603 100p 50V N C163 0603 100p 50V N C28 0603 100n 25V 7 C28 0603 100n 25V 7 1 2 L6 BK1608LL121 RoHS L6 BK1608LL121 RoHS 1 2 D13 UDZSF 5 6B PbF D13 UDZSF 5 6B PbF R37 0603 0R 5 RoHS R37 0603 0R 5 Ro...

Page 54: ...F Q12 TP0610K PbF 1 2 L2 MPZ1608S221 RoHS L2 MPZ1608S221 RoHS R3 0603 249R 1 RoHS R3 0603 249R 1 RoHS 1 2 L1 MPZ1608S221 RoHS L1 MPZ1608S221 RoHS R4 0603 249R 1 RoHS R4 0603 249R 1 RoHS 7 8 5 3 1 2 4...

Page 55: ...B1P FB2N FB2P POL STB FCKN FCKP FG2P FG1P FG0P FG1N FG0N FG2N FR0P FR1N FR1P FR2N FR2P FR0N FSTH V12A V5A PANEL_ON OFF DCDC_ON OFF VCM_PWM GVOFF BSTH BR1N BR2N BR2P BR0P BR0N BR1P BG0N BG2N BG1P BG2P...

Page 56: ...53 ViewSonic Corporation Confidential Do Not Copy VE1920wmb 2 11 PCB Layout Diagrams...

Page 57: ...54 ViewSonic Corporation Confidential Do Not Copy VE1920wmb 2...

Page 58: ...55 ViewSonic Corporation Confidential Do Not Copy VE1920wmb 2...

Page 59: ...56 ViewSonic Corporation Confidential Do Not Copy VE1920wmb 2...

Page 60: ...57 ViewSonic Corporation Confidential Do Not Copy VE1920wmb 2...

Page 61: ...rcuit Description 5 Adjustment Procedure 6 Troubleshooting Flow Chart 7 Recommended Spare Parts List 8 Exploded Diagram and Exploded Parts List 9 Block Diagrams 10 Schematic Diagrams 11 PCB Layout Dia...

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