ViewSonic Va1912wb 3 Service Manual

ViewSonic Model Number: VS10866
Rev: 1a
Serial No. Prefix:  QBN
Item ViewSonic P/N Ref. P/N Description Location Universal number# Qty1 E-00005747 MJ0A10AK01 19 Wide Semi Product, A190A2, 1440X900, TN 1
2 N/A 36X8636401 Driver IC, Scan, HX8636APD400(TSMC), 300Channel, , RoHS, Green I 3
3 N/A L3J009XXXX 19 wide PS TN Asahi 0.7mm glass Cr BM(Panel Base) 1
4 N/A 74-D002212 Polarizer, TFT, Degree 135, 414 mmx259.7 mmx0.215 mm, NWF-LESEG,
M190A1, Green I
1
5 N/A 74-D002213 Polarizer, CF, Degree 135, 415.84...

8. Exploded Diagram and Exploded Parts List  
49
 
ViewSonic Corporation
      Confidential - Do Not Copy    VA1912w-4_VA1912wb-4 
ViewSonic Model Number: VS10866
Rev: 1a
Serial No. Prefix: QBKItem ViewSonic P/N Ref. P/N DescriptionQty
1 N/A 44-D003584 BACKLIGHT UNIT 1
2 N/A L3J009XXXX PANEL ASSY1
3 N/A 41-D000643 BACKLIGHT FRONT COVER 1
4 HW-00000553 42A9930008 SCREW M3*4L2
5 B-00006039 27-D003247 POWER PCB ASSY 1
6 B-00005599 35-D005694 AD PCB ASSY1
7 HW-00000553 42A9930008 SCREW M3*4L7
8 C-00005686...

 
50 
ViewSonic Corporation
      Confidential - Do Not Copy    VA1912w-4_VA1912wb-4 
ViewSonic Model Number: VS10866
Rev: 1aItem ViewSonic P/N Ref. P/N LocationQty
1 N/A VA1912W-2LCD Monitior
1
2 P-00000595 7841919921PE Foam Bag
1
3 P-00004295 78-D004392PS Foam (Left)
1
4 P-00004296 78-D004388PS Foam(Right)
1
5 N/A Different region
(refer to BOM) Carton
1
6 N/A Different region
(refer to BOM) Power Cord
1
7 N/A Different region
(refer to BOM) Power Cord
1
8 CB-00004287 32F3018003Monitor Cable
1
9...

 51 
ViewSonic Corporation 
    Confidential - Do Not Copy     VA1912w-3_VA1912wb-3 
9. Block Diagram 
 
 
 
 
 
 
 
OSD Key Pad / Audio Out 
D-sub 
Analog Video  Sp e a k e r  
 
AC Power  LDO 
Main Board 
LIPS  Backlight LCD Module 
DC-5V 
5V 
Signal 
Audio In 
DC-12V 
12V 
3.3V  

10. Schematic Diagrams 
V18C
RIGHT
CLK+
AUTO
CLK-
PANEL_ON/OFF
V33C
INV_ON/OFF
V5A_ESD
INV_ON/OFFBSTHSTBPOLCPVSTVOE
GVOFF
BG2NBG2PBG1NBG1PBG0NBG0PBB2NBB2PBB1NBB1PBB0NBB0PFR2NFR2P
BR2N
FR1N
BR2P
FR1P
BR1N
FR0N
BR1P
FR0PFG2N
BR0N
FG2P
BR0P
FG1NFG1PFG0NFG0PFB2NFB2PFB1NFB1PFB0NFB0PFCKNFCKPFSTHBCKNBCKP
INV_ADJ
VOL_ADJ
AUDIO_ON
AUDIOL+AUDIOL-AUDIOR+
V5A
LED_GL
POWER
LEFTTURBOLED_OR
MENU
AUDIOR-
V12A
DCDC_ON/OFF
DCDC_ON/OFFV12A
V5A
PANEL_ON/OFFVCM_PWM
V33PV33P
AUD_DET
INV_ADJ
B-B+G-G+R-R+DDCD_DATDDCD_CLK...

VCC
OE
STV
CPV
STB
POLVCC
STVCPVOE
POLSTB
FSTH
PANEL_ON/OFF
DCDC_ON/OFF
VCM_PWM
GVOFF
PANEL_ON/OFFDCDC_ON/OFFVCM_PWMGVOFF
BSTH
FSTH
BSTH
V33P
STVCPVOE
FB0NFB0PFB1NFB1PFB2NFB2P
POLSTBFCKNFCKP
FG2PFG1PFG0PFG1NFG0N
FG2N
FR0PFR1NFR1PFR2NFR2P
FR0N
FSTH
V12A
V5APANEL_ON/OFFDCDC_ON/OFFVCM_PWMGVOFF
BSTH
BR1NBR2NBR2P
BR0PBR0N
BR1P
BG0N
BG2NBG1PBG2P
BG1NBG0P
BCKPBCKN
BB1PBB2N
BB0PBB1NBB0N
BB2P
V12A
V33P
GND
GND
V5A
GND
GND
GND
S Board        X Board RA N/P -->   BA P/N
GA N/P -->   GA P/N
BA N/P -->   RA P/N...

FB0NFB0PFB1NFB1PFB2NFB2PFG0NFG0PFG1NFG1PFG2NFG2PFR0NFR0PFR1NFR1PFR2NFR2PBB0NBB0PBB1NBB1PBB2NBB2PBG0NBG0PBG1NBG1PBG2NBG2P
BR0NBR0PBR1NBR1PBR2NBR2P
FCKPFCKNBCKPBCKN
BSTHFSTHGVOFFSTBSTVCPVOEPOL
SAR1SAR2
LED_GLLED_OR
DCDC_ON/OFF
GNDRRIN
GNDGGIN
GNDBBINSOG
VSYNCHSYNC
DDCA_CLKR+R-G+G-B+B-CLK+CLK-DDCD_DAT
SAR2SAR2SAR1
DDCA_DAT
DDCD_CLK
WPWP
WP
DVI
DSUB
DSUBDVI
FB0NFB0PFB1NFB1PFB2NFB2PFG0NFG0PFG1NFG1PFG2NFG2PFR0NFR0PFR1NFR1PFR2NFR2PBB0NBB0PBB1NBB1PBB2NBB2PBG0NBG0PBG1NBG1PBG2NBG2P
BR0NBR0PBR1NBR1PBR2NBR2P...

V5A
VIN_12V
INV_ADJ
INV_ON/OFF
VOL
VOLMUTE
MUTE
AUD_DET
MUTE
AUD_Shutdown
AUD_Shutdown
INV_ADJ
INV_ON/OFF
V33C
V5A
V12A
VOL_ADJ
AUDIOR-AUDIOR+AUDIOL-AUDIOL+
AUDIO_ON
AUD_DET
LED_GL
GND_INV
V33CV33C
GND
GND
GND
GNDGNDGND
GND
VIN_12V
GND
V5A
GND
V5A
V5A
V12A
GND
V5A
GND
V5A
GNDGNDGND
[GND_INV]Low: MUTE OFF
R181
0603/10K/5%/RoHSR181
0603/10K/5%/RoHS
C8
0603/0.1u/25V/openC8
0603/0.1u/25V/open
R16
0603/1K/5%/RoHSR16
0603/1K/5%/RoHS
R10 0603/4.7K/5%/RoHSR100603/4.7K/5%/RoHS
C161
0603/100n/25V/Y/RoHSC161...

V33P
V33CV33CV5A
V33PV5A
DVI_5VVGA_5V
VCTRL
V18C
Vref
GND
GND
V18C
GND(SCALER VCC)
(POWER FOR SCALER)
(Panel VCC)
Heat-Sink 
L9FBMJ2125HS420/PbFL9FBMJ2125HS420/PbF
B
1C 2E
3GND 4Q8
H2907ASQ8
H2907ASC160
0805/4.7u/16V/YC160
0805/4.7u/16V/Y
TP
1
V33C1
 V33C1
 
R202
0603/51R/1%R202
0603/51R/1%
GND
1
VOUT 2VIN
3VOUT 4
U4
LM1117MPX-3.3/RoHSU4LM1117MPX-3.3/RoHSL18 FBMJ2125HS420/PbFL18FBMJ2125HS420/PbF
C44
1206/22u/16V/Y/RoHSC44
1206/22u/16V/Y/RoHS
R203
0603/2K/1%R203
0603/2K/1%
12
3
D7
BAV70W/openD7...

VSI
HSYNC
VSYNC
VGA_5V
VGA_5V
HSI
RIN
GIN
BIN
VSYNC
GNDR
GNDG
GNDB
DDCA_CLK
HSYNC
DDCA_DAT
V5A_ESD
V5A
DDCA_DAT
DDCA_CLK
SOG
VGA_5VDSUB_DET
V5A_ESD
GNDGND
GNDGND
GND
GND
GND
GND
GND
GND
GND
V5A
GND
GND
GND
GND
GND
162738495
11
12
13
14
1510CN7
89263-6762CN7
89263-6762
1
2D33
UDZSF-5.6B/PbFD33
UDZSF-5.6B/PbF
R660603/0R/5%/RoHSR660603/0R/5%/RoHS
R240603/470R/1%R240603/470R/1%
13
2
D25
BAV99W/RoHSD25
BAV99W/RoHSR144
0603/0R/5%/OPENR144
0603/0R/5%/OPEN13
2
D24
BAV99W/RoHSD24
BAV99W/RoHS
C11...