ViewSonic Va1912w4 Service Manual
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Defect Mode Failure Analysis Repair Testing
Check PCBAPower on
Display
Abnormal
Flicker
Next StepTEST NG
A
Completed
AD/B Change
CNT/B Change
Inverter/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 Level 3 Repair
Check PCBA
AD/B Change
Power/B Change
CNT/B Change
Check PanelPanel Change
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Failure Analysis Repair Testing
Gray Scale
Display
Abnormal
R.G.B
Display
Abnormal
No signal
Display White
Out
Brightness
Even
Abnormal
Next StepTEST NG
Completed
B
Booting Delay
C
Beat Display
No Backlight
Check PCBAAD/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 Wire
Check PanelPanel Change
OSD/B Change
Check PCBA
Adapter Change Check Adapter
※ “ Panel Change” Should be Performed to Level 3 Repair
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Defect Mode Failure Analysis Repair Testing
Horizontal
Line Defect
Vertical
Weak Line
Peculiar Smell
Check PCBA
Check Panel
Horizontal
Weak Line
Next StepTEST 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
AD/B Change
※ “ Panel Change” Should be Performed to Level 3 Repair
Complete
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Defect Mode Failure Analysis Repair Testing
LED Off
No Power
LED Dark
LED Abnormal
LED Flicke
r
Power ON/OFF Abnormal
LED Display Abnormal Check PCBA
Check Wire
AD/B Change
CNT/B Change
OSD Cable
Inverter/B
Power/B Change
OSD/B Change
AC Power Change
DC Power CNT
Cable Chan
ge
Adapter Change Check Adapter
Check PCBA
Check Wire
OSD Cable
Inverter/B
Power/B Change
OSD/B Change
DC Power CNT Cable Chan
ge
Adapter Change
AD/B Change
LED Loss
Turn Off
Abnormal Check PCBA
Check Wire
Next StepTEST NG
Completed
※
“ Panel Change” Should be Performed to Level 3 Repair
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Defect Mode Failure Analysis Repair Testing
Abnormal BIOS &OSD
Check PCB
Check Wire
AD/B Change
CNT/B Change
OSD cable
OSD No
Display OSD Key
Unavailable
OSD Can’t
Input
OSD Can’t
Read
OSD Jiggle
OSD Display
Abnormal
Check BIOS
Inverter/B
Power/B Change
OSD/B Change
D-sub cable
VGA cable
DVI cable
BIOS Update
Abnormal
Louds
peaker
Check PCBA
Check Wire
AD/B Change
CNT/B Change
No Voice Voice Loss
Abnormal
Loud
L/R
Abnormal
L/R Same
Volume
Check Loudspeaker
Inverter/B Change
Power/B Change
OSD/B Change
OSD Cable Change
Loudspeaker
Change
Loudspeaker
Noise
※ “ Panel Change” Should be Performed to Level 3 Repair
Completed
Next StepTEST
NG
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VA1912w-2_VA1912wb-2
Defect Mode Failure Analysis Repair Testing
Display Shut
Down Check PCBA
Check Panel
Display Flicker
((tapping ) Check PCBA
Check Panel
AD/B Change
AD/B Change
Power/B Change
Panel Change
CNT/B Change
CNT/B Change
Other Abnormal Display
Next StepTEST 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 Cable Change
Remote controller
Change Check Controller
DVI Signal
Display
Abnormal Check PCB
CheckEDID Code
AD/B Change
EDID Update
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Trouble Shooting Analysis
Check the information in this section to see if the problems can be solved before requesting repair.
Note ：The consumers are only allowed to solve the problems described as below. Any
unauthorized product modification, or failure to follow instructions supplied with the product
will end the warranty immediately.
z No image
‹ Make sure power button is ON.
‹ Check whether the LCD monitor and computer pow er cords are plugged and whether there is a
supply of power.
z No Signal Input
‹ Check the signal connection between the computer and LCD monitor.
z “Out of Range”
‹ Check the computer image output resolution a nd frequency and compare the value with the
preset values (Please refer to [Appendix-Display 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 the computer and LCD monitor.
‹ Perform Auto Adjust.
z Distorted image
‹ Reset the LCD monitor
‹ Take off extra accessories (suc h as signal extension cord).
z Image is not centered
‹ Use OSD Image Menu to adjust H_Position and V_Position.
‹ Check image size setting.
‹ Perform Auto Adjust.
z Size is not appropriate
‹ Use OSD Image Menu to adjust H_Position and V_Position.
‹ Check image size setting.
‹ Perform Auto Adjust.
z Uneven color
‹ Use OSD Color Menu to adjust color setting.
z Color too dark
‹ Use OSD Color Menu to adjust color setting.
z Dark area distorted
‹ Use OSD Color Menu to adjust color setting.
z White color is not white
‹ Use OSD Color Menu to adjust color setting.
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ViewSonic Corporation
7. Recommended Spare Parts List
Rev: 1bItemECR/ECN ViewSonic P/N Ref. P/N Location Universal number#Qty
1Accessories:
Power Code, UL, SVT#18/3C, 75C, LP-30B+LS-13, L=1830+/-
50mm, Black, Linetek, 18AWG, No Bag, Green I A-00000458
32E1818015(AJ0A2T3A25)1
2 PCBA for , A190A2-A02-T, A190A2-A02-H-S1, 1206-04, Rev.04,
ODM, Green II B-00005599 35-D005694
1
3 PCBA for , A190A2-H, A190A2-H-K3, 106-02, Rev.02, USI/ITC,
ODM, Green II B-00005600 35-D005166
1
4 Lips With Audio, DAC-12M030 A, Ver:0F, 5 V/3 A, 12 V/0.7 A,
ITYPE, 7 mA, 1710 V, Delta Dongguan_Inverter/Delta
Jiangsu_Adaptor, RoHS B-00006040 27-D003247
1
5 Bezel Assy, A190A2-H05, ABS PA757N, Silver(Pantone877C),
Fukin
gC-00004281 40-D004255
1
6 Rear Assy, A190A2-H05, ABS PA757N, Black(J91A11B5), Fuking C-00004282 40-D0042571
7 Cover Hinge, A190A2-H05, ABS PA757N, Black(J91A11B5),
Fukin
gC-00004284 40-D004250
1
8 Seat Assy, A190A2-H05, ABS PA757N, Black(J91A11B5),
Hontech Precisio
nC-00004285 40-D004259
1
9 Audio Cable, A150X2, 18AWG, 180cm, Black, JCE, Green I CB-00000544 32F28180041
10 Accessory Cable, D-Sub, BLACK, Johnson Components &
E
quipments, A150X2, Green ICB-00004287 32F3018003
1
11 FFC, A190A2-H05, 15 Pins, Tennsure/Young Shin, L=108.5 CB-00004288 32-D0045331
12 FFC, FFCX816, 36 Pins, Tennsure, package AL_Foil, Green I
ICB-00005742 32-D005773 1
13 Label, Pallet Barcode Label, 75x40, A190E2-H03, VSC, Non Green DC-00000586 77419991411
14 Safety Label for , A190A2-H05, 120 mmx50 mm, Chang Huang,
VSC
_VA1912w-2, Green IIDC-00005602 77-D008324
1
15 Carton Label for , A190A2-H05, 76.2 mmx76.2 mm, Chang Huang,
VSC
_VA1912w-2, Green IIDC-00005604 77-D008326
1
16 MENU for A190E2-H05, Complex, 1C, Yi Ching, VSC_VA1912w-
2+Caution Card, Green I
IDC-0000560676-D008373(AJ0A2T3A25)1
17 SCREW, M3, P=0.5 mm, L=4 mm, Pan Head, Phillips Cross
Recess, Green I HW-00000554 42A9930008
2000
18 Screw, M3*P1.27*12, φ5.5*2, Steel, Green
IHW-00000556 42A9990005 2000
19 SCREW, M4, P=0.7 mm, L=15 mm, Pan Head, Phillips Cross
Recess, Green I HW-00000590 42A9930013
2000
20 SCREW, M4, P=0.7 mm, L=8 mm, Round Head, Phillips Cros
sRecess, plate color Zn, Screw_with_Washer, Shye Ching/Hama
Naka Motogawa, head D8, Green I HW-00004042 42-D000649
2000
21 SCREW, M4, P=0 mm, L=11.8 mm, Hexagon Stand Off, Socket,
Green I HW-00006042 42A9940007
2000
22 Miscellaneous:
Tape, Security Tape, OPP, L900xW50x0.045mm, VSC, Non Green M-00000560 73455110021
23 Bag, 570 mmx600 mmx0.13 mm, White, Non Gree
nP-00000595 7841919921 1
24 Cushion, A190A2-T05, EPS, WHITE, 450 mmx160 mmx145 mm,
Sin
g Home, PS FOAM (Left), Green IIP-00004295 78-D004392
1
25 Cushion, A190A2-T05, EPS, WHITE, 450 mmx160 mmx145 mm,
Sin
g Home, PS FOAM (Right), Green IIP-00004296 78-D004388
1
26 Carton, A190A2-H05, 538 mmx158 mmx470 mm, Chen Ti Paper,
VSC
_VA1912w-2, Green IIP-00005607 78-D008325
1
Remark 1: Above listed items are examples, supplier can expand the rows to add mor\
e necessary items.
Remark 2: All revised RSPLs with newly added items or any change made should be hi\
ghlighted and correlated with the ECN/ECR approved by ViewSonic Corporation.
Cabinets:
Cables:
Documentation:
Hardware:
Packing Material:
RECOMMENDED SPARE PARTS LIST (VA1912W-2)
DescriptionSerial No. Prefix:
Q90
PC Board Assembly:
ViewSonic Model Number: VS10866
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ViewSonic Model Number: VS10866
Serial No. Prefix: QBM Rev: 1a
Item Description ECR/ECN ViewSonic P/N Ref. P/N Location Universal number# Qty
1 Accessories: Power Cord 0.75mm2, 3C, A-00002058 32E1818013 1
2 Audio Board (Rev.02) B-00005600 35-D005166 1
3 Power Supply Board, Ver:0F B-00006039 27-D003247 1
4 Main Board - A190A2-A02-T, A190A2-A02-T-S1,Rev.04 B-00006727 35-D008185 1
5 Front Panel, Bezel Assy C-00004276 40-D004254 1
6 Back Cover C-00004277 40-D004253 1
7 Cover Hinge C-00004279 40-D004258 1
8 Base Assembly C-00004280 40-D004256 1
9 Audio Cable, A150X2, 18AWG, 180cm, Black CB-00000544 32F2818004 1
10 Accessory Cable, D-Sub CB-00004287 32F3018003 1
11 Flat Cable, (FFC, A190A2-H05) CB-00004288 32-D004533 1
12 Flat Cable FFCX816,36 CB-00005742 32-D005773 1
13 Safety Label 120 mmx50 mm Ver.3 DC-00008016 77-D012194 1
14 Carton Label 76.2 mmx76.2 mm DC-00008020 77-D011732 1
15 SN Label 50 mmx25 mm DC-00008021 77-D011737 1
16 Users Guide MENU Complex, 1C DC-00008022 76-D011747 1
17 SCREW, M3, P=0.5 mm, L=4 mm HW-00000553 42A9930008 2000
18 Screw, M3*P1.27*12, φ5.5*2, Steel HW-00000556 42A9990005 2000
19 SCREW, M4, P=0.7 mm, L=15 mm HW-00000590 42A9930013 2000
20 SCREW, M4, P=0.7 mm, L=8 mm HW-00004042 42-D000649 2000
21 SCREW, M4, P=0 mm, L=11.8 mm HW-00006041 42A9940007 2000
22 Miscellaneous: Tape, Security Tape, OPP, L900xW50x0.045mm M-00000560 7345511002 1
23 PE Bag, 570 mmx600 mmx0.13 mm P-00000595 7841919921 1
24 FOAM (Left) P-00004295 78-D004392 1
25 FOAM (Right) P-00004296 78-D004388 1
26 Generic Foam Set P-00001347 30833
27 Generic Box P-00002515 20653
28 Craft Box 538 mmx158 mmx470 mm P-00008015 78-D011688 1
Remark 1:
Remark 2:
Documentation:
Hardware:
Packing Material:
All revised RSPLs with newly added items or any change made should be hi\
ghlighted and correlated with the ECN/ECR approved by V iewSonic Corporation.
This is to eliminate repeated cross checks of each item between this ver\
sion and prior versions. Above listed items are examples, supplier can expand the rows to add mor\
e necessary items.
RECOMMENDED SPARE PARTS LIST (VA1912WB-2)
PC Board Assembly:
Cabinets:
Cables:
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Confidential - Do Not Copy VA1912w-2_VA1912wb-2 ViewSonic Corporation
ViewSonic Model Number: VS10866
Rev: 1b
Serial No. Prefix: Q90
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 mmx262.15 mmx0.215 mm,NWF-
LESEGAGS1,M190A1,Green I
1
6 N/A 73-C000047 ACF,COG,AC-8405Z-23 1.5mmX100M,100000 mmx1.5 mm,COG-ACF,Green I 0.00168
7 N/A 7344191017 ACF,AC-4251FY-16,100M/RL,Green I 0.0044
8 N/A 36-D002378 Driver IC,COF,Data,M190A1-L01,HX8018-A050CBAK,Reel,6
bit,432Channel,RoHS,Green I
10
9 N/A 73-D002676 ACF,PCB,AC-9825R-35,100000 mmx1.5 mm,PCB-ACF,Green I 0.0044
10 N/A 35-D004361 PCBA for ,A190A2-H,A190A2-A02-H-X,1206-01,Rev.01,Green I 1
11 N/A 7349951002 Silicone,TORAY/-9187L,330g 0.4
12 HW-00000533 42A9930008 SCREW,M3,P=0.5 mm,L=4 mm,Pan Head,Phillips Cross Recess,Green I 16
13 HW-00006041 42A9940007 SCREW,M4,P=0 mm,L=11.8 mm,Hexagon Stand Off,Socket,Green I 2
14 N/A 41-D000643 Metal Frame Front,M190A1-L01/A190A2/M190A1-L03,SECC 0.6t,19wide 1
15 HW-00004042 42-D000649 SCREW,M4,P=0.7 mm,L=8 mm,Round Head,Phillips Cross Recess,plate color
Zn,Screw_with_Washer,head D8,Green I
1
16 N/A 73-D002886 Conductive Tape,PET+Adhesive,409 mmx58.55 mmx0.05
mm,Mylar_Cover_PcbaX_a190a2,Green I
1
17 B-00006039 27-D003247 Lips With Audio,DAC-12M030 A,Ver:0F,5 V/3 A,12 V/0.7 A,I TYPE,7 mA,1710
V,RoHS
1
18 N/A 44-D003584 Backlight Unit,A190A2,Green I 1
19 C-00005686 41-D003772 Cover AD Assy,A190A2,SECC,without Dvi-D Hole,Green II 1
20 B-00005599 35-D005694 PCBA for ,A190A2-A02-T,A190A2-A02-H-S1,1206-04,Rev.04,ODM,Green II 1
21 CB-00005742 32-D005773 FFC,FFCX816,36 Pins,package AL_Foil,Green II 2
22 CB-00000544 32F2818004 Audio Cable,A150X2,18AWG,180cm,Black,JCE,Green I 1
23 CB-00004287 32F3018003 Accessory Cable,D-Sub,BLACK,A150X2,Green I 1
24 A-00002058 32E1818013 Power Cord,CCC,300/500V,0.75mm2,3C,PC-323+COC-01,L=1830+/-
50mm,Black,Linetek,18AWG,No Bag,Green I
1
25 HW-00000590 42A9930013 SCREW,M4,P=0.7 mm,L=15 mm,Pan Head,Green I 4
26 HW-00000555 42A9930014 Screw,M3*P0.5*6,Green I 4
27 HW-00000556 42A9990005 Screw,M3*P1.27*12, φ5.5*2,Steel,Green I 2
28 C-00004284 40-D004250 Cover Hinge,A190A2-H05,ABS PA757N,Black(J91A11B5) 1
29 C-00004282 40-D004257 Rear Assy,A190A2-H05,ABS PA757N,Black(J91A11B5) 1
30 C-00004281 40-D004255 Bezel Assy,A190A2-H05,ABS PA757N,Silver(Pantone877C) 1
31 CB-00004288 32-D004533 FFC,A190A2-H05,15 Pins,L=108.5 1
32 B-00005600 35-D005166 PCBA for ,A190A2-H,A190A2-H-K3,106-02,Rev.02,ODM,Green II 1
33 C-00004283 40-D004252 Stand Assy,A190A2-H05,ABS PA757N,Black(J91A11B5) 1
34 PL-00006048 73-D005900 Panel Protector Film,A190A2-H05,XG-536 T=0.1,With_Print,Green II 1
35 DC-00005602 77-D008324 Safety Label for ,A190A2-H05,120 mmx50 mm,VSC_VA1912w-2,Green II 1
36 N/A 77-D008330 SN Label for ,A190A2-H05,50 mmx25 mm,VSC_VA1912w-2 for China,Green II 1
37 HW-00002076 7841595111 Corner Protector,paper,50 mmx50 mmx1850 mm,Green I 1
38 N/A 7841595191 Separator,紙板(AA),1120*820*11mm,A150X2-T01,Non Green 0.025
39 P-00000595 7841919921 Bag,570 mmx600 mmx0.13 mm,White,Non Green 1
40 DC-00000586 7741999141 Label,Pallet Barcode Label,75x40,A190E2-H03,VSC,Non Green 0.021
41 M-00000560 7345511002 Tape,Security Tape,OPP,L900xW50x0.045mm,VSC,Non Green
0.3
42 N/A 77-D000114 Customer Label,A170E1-H0G,180 mm,100 mm,Green I 1
43 N/A 77-D000118 Customer Label,A170E1-H0G,130 mm,80 mm,Green I 1
44 N/A 78-D000275 Warranty Card,A170E1-H0G,143 mmx210 mm,VSC_VA712,Green I 1
45 DC-00005603 77-D000576 Carton Label for ,A190E2-H06,20 mmx20 mm,VSC_VA912_for Europe,Green I 1
46 N/A 77-D001323 Customer Label for ,A170E1-H0G,15 mmx15 mm,QC Pass Label_VSC_for
China,Green I
1
47 N/A 78-D001492 Pallet,A150X2-T01,Wooden,1150 mmx840 mmx138 mm,Green I 0.02
48 C-00004285 40-D004259 Seat Assy,A190A2-H05,ABS PA757N,Black(J91A11B5) 1
49 P-00004295 78-D004392 Cushion,A190A2-T05,EPS,WHITE,450 mmx160 mmx145 mm,PS FOAM (Left),Green\
II
1
50 P-00004296 78-D004388 Cushion,A190A2-T05,EPS,WHITE,450 mmx160 mmx145 mm,PS FOAM (Right),Gree\
n
II
1
51 N/A 79-D004425 Shipping Package Information for ,A190A2-H05,ViewSonic 1
52 DC-00005604 77-D008326 Carton Label for ,A190A2-H05,76.2 mmx76.2 mm,VSC_VA1912w-2,Green II 1
53 P-00005607 78-D008325 Carton,A190A2-H05,538 mmx158 mmx470 mm,VSC_VA1912w-2,Green II 1
54 DC-00005605 76-D008375 MENU for A190E2-H05,Complex,1C,VSC_VA1912w-2,CD-ROM,Green II 1
BOM LIST (VA1912W-2)
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