ViewSonic Vx2235wm 5 Service Manual

							
ViewSonic Corporation Confidential - Do Not Copy    VX2235wm-1 
 58 
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  
						

							
ViewSonic Corporation Confidential - Do Not Copy    VX2235wm-1 
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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 peake r 
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 Ste
pTEST 
NG  
						

							
ViewSonic Corporation Confidential - Do Not Copy    VX2235wm-1 
 60 
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  
						

							
ViewSonic Corporation Confidential - Do Not Copy    VX2235wm-1 
 61 
 Trouble Shooting Analysis 
Check the information in this section to see if th e 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.  
						

							
ViewSonic Corporation Confidential - Do Not Copy    VX2235wm-1 
 62 
7. Recommended Spare Parts List 
 
 ViewSonic Model Number:  VS11349
Serial No. Prefix:  QA5 Rev: 1a
Item DescriptionECR/ECN ViewSonic P/N Ref. P/N Location Universal number# Qty
1 Accessories: Power Cord A-00005071 32-D002330
1
2 Power Supply Board (Lips With Audio, V0.7
)B-00008026 27-D009542 1
3 Main Board Rev.04 B-00008027 35-D010627
1
4 PCBA Rev.02,ODM B-00008028 35-D010238
1
5 Cover Hinge (Right
)C-0000803940-D010946 1
6 Cover Hinge (Left)C-0000804040-D010960 1
7 Front Panel (Bezel)C-0000804140-D010959 1
8 Back CoverC-0000804240-D010948 1
9 Base Assembly (Stand Assy)C-0000804340-D010942 1
10 Cover (Seat Assy) C-00008044
40-D010947 1
11 DVI Cable, S/L, 1.8M, W/2F CB-00002083 32F0000004
1
12 Audio Cable (Accessory Black, 28AWG
)CB-00005678 32F2818011 1
13 Accessory Cable,D-Sub, 30AWGCB-00005851 32-D002132 1
14 Flat Cable (FFC 36 Pins)CB-00008014 32-D008479 2
15 Flat Cable (FFC 15 Pins)CB-00008015 32-D011077 1
16 Safety Label 149 mmx29 mmDC-00008038 77-D010937 1
17 Carton Label 76.2 mmx76.2 mmDC-00008039 77-D010936 1
18 CD-Rom  (Menu)DC-00008040 76-D011105 1
19 Hardware: SCREW,3,P=0.5 mm,L=4 mmHW-00000553 42A9930008
13
20 SCREW,3,P=0.5 mm,L=4 mmHW-00000553 42A9930008 2
21 Screw,M3*P0.5*6,SteelHW-00000555 42A9930014 6
22 Screw, M4, P=0.7 mm, L=8 mmHW-00004042 42-D000649 1
23 SCREW,4,P=0 mm,L=11.8 mmHW-00006041 42A9940007 4
24 SCREW M3,P=0.5 mm,L=2.5 mmHW-00008002 42-D009237 3
25 SCREW  M3,P=1.27 mm,L=10 mmHW-00008003 42A9930015 1
26 Miscellaneous: Tape,A170E1-H0P,900 mmx50 mmx0 mmM-00000560 7345511002
0.05
27 PE Bag,600 mmx650 mmx0.13 mmP-00008033 78-D009624 1
28 Craft Foam (Top)P-00008034 78-D011076 1
29 Craft Foam (Bottom)P-00008035 78-D011075 1
30 Carft BoxP-00008036 78-D011103 1
31 Plastics: Panel Cover  (Panel Protector Film)PL-00008008 73-D009538
1
Remark 1:
Remark 2:
RECOMMENDED SPARE PARTS LIST (VX2235wm-1)
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. This is to eliminate repeated cross checks of eac\
h item between this version and prior versions. Above listed items are examples, supplier can expand the rows to add mor\
e necessary items
PC Board Assembly:
Cabinets:
Documentation: Cables:
Packing Material: 
						

							
ViewSonic Model Number: VS11349
Rev: 1a
Serial No. Prefix: QA5
Item ViewSonic P/N Ref. P/N Description Location Universal number# Qty1 N/A 73-C000047
ACF, COG, AC-8405Z-23 1.5mmX100M, 100000 mmx1.5 mm, Hitachi Chemical, CO\
G-ACF, Green
I 0.0028
2 N/A 36-D006411
Driver IC, COG, Scan, M170E5-L09, HX8653-A000PD400, 240/263/256Channel, \
Himax, (HX8633
shrank version), Green II
4
3 N/A L4M003XXXX 22wide_TN,  Photo Spacer , Corning 0.7mm Glass ,  Resin/BM(Panel Base)\
 1
4 N/A L4M003XXBI 22wide_TN,  Photo Spacer , Corning 0.7mm Glass ,  Resin/BM(Sheet Base)\
 0.0833
5 N/A 74-D007599
Polarizer, TFT, Degree 135, 478.16 mmx300.2 mmx0.215 mm, XT300CMM220Z1H0\
B, M220Z1,
LG Chem, LG HCR EWV 1
6 N/A 74-D007598
Polarizer, CF, Degree 135, 480.76 mmx303.1 mmx0.215 mm, XT320CMM220Z1H0T\
, M220Z1, LG
Chem, LG HCR EWV 1
7 N/A 36-D007038
Driver IC, COF, Data, M220Z1-L01, HX8019-A07BCBC5, COF, 6 bit, 642Channe\
l, Himax, Green II
8
8 N/A 73-D008216 ACF, COF, AC-4255U-16, 200000 mmx1.2 mm, Hitachi Chemical, Green II 0.0025
9 N/A 73-D002676 ACF, PCB, AC-9825R-35, 100000 mmx1.5 mm, Hitachi Chemical, PCB-ACF, Gree\
n I 0.005
10 N/A 35-D010045 PCBA for , A220Z1-Z01-H, A220Z1-Z01-H-X, 1101-03, Rev.04, USI/ITC, ODM, \
Green II 1
11 N/A 7349951002 Silicone, TORAY/-9187L, 330g 0.5
12 HW-00008003 42A9930015 SCREW, M3, P=1.27 mm, L=10 mm, Pan Head, Phillips Cross Recess, Green I 1
13 B-00008028 35-D010238 PCBA for , A220Z1-Z01-H, A220Z1-Z01-H-K2, 1101-02, Rev.02, USI/ITC, ODM,\
 Green II 1
14 C-00008039 40-D010946 Cover Hinge, A220Z1-H05, ABS PA-757N, ORIGINAL, Fuking, RIGHT, Green II 1
15 C-00008040 40-D010960 Cover Hinge, A220Z1-H05, ABS PA-757N, ORIGINAL, Fuking, LEFT, Green II 1
16 C-00008041 40-D010959 Bezel Assy, A220Z1-H05, Black(J01-J91A11B5), Fuking, SPK, Green II 1
17 C-00008042 40-D010948 Rear Assy, A220Z1-H05, Silver(TY4818A)/Black(M1077), Fuking, audio_i\
n+DVI-D, Green II 1
18 CB-00008015 32-D011077 FFC, FFC1DDX-A186S1A, 15 Pins, Tennsure_FFC, A220Z1-H05, Green II 1
19 HW-00000553 42A9930008
SCREW, 3, P=0.5 mm, L=4 mm, Pan Head, Phillips Cross Recess, Hama Naka M\
otogawa/Shin
Yee/Hama Naka Shoukin/Shiho/Shye Ching, Green I 2
20 HW-00000555 42A9930014
SCREW, 3, P=0.5 mm, L=6 mm, Pan Head, Phillips Cross Recess, Hama Naka S\
houkin/Shye
Ching/Hama Naka Motogawa/Shin Yee, NA, Green I 6
21 C-00008043 40-D010942 Stand Assy, A220Z1-H05, Silver(TY4818A), Hontech, Green II 1
22 PL-00008008 73-D009538 Panel Protector Film, A220Z1-H03, XG-536 T=0.1mm, Just Enter, BLANK 1
23 N/A 77-D010938
SN Label for , A220Z1-H05, 50 mmx25 mm, Chang Huang/Kunshan Hwakuan, VSC\
_VX2235wm,
Green II 1
24 DC-00008038 77-D010937 Safety Label for , A220Z1-H05, 149 mmx29 mm, Chang Huang, VSC_VX2235wm, \
Green II 1
25 HW-00002076 7841595111 Corner Protector, paper, 50 mmx50 mmx1850 mm, Green II 0.083
26 N/A 7841996911
Separator, (AA), A190E2-H04, 1200 mmx1050 mmx11 mm, Shanghai Zhung Hao\
/Hua Sun Paper,
ACER, Non Green 0.021
27 DC-00000586 7741999141 Module Label, A190E2-H03, 75 mm, 40 mm, Non Green 0.042
28 M-00000560 7345511002 Tape, A170E1-H0P, 900 mmx50 mmx0 mm, Symbio, OPP 0.005
29 N/A 73-D001327 Tape, 82296 mmx48 mmx0.045 mm, cmo, OPP, Green I 0.014
30 N/A 78-D003113
Pallet, A190E3-H02_acer, Wooden, (KD-HT), 1209 mmx1066 mmx135 mm, Hua \
Sun
Paper/Shanghai Hang Wei/Ming Li, Green I 0.021
31 P-00008033 78-D009624 Bag, 600 mmx650 mmx0.13 mm, PE Foam, 650, Huang Jyii, Green II 1
32 DC-00008039 77-D010936
Carton Label for , A220Z1-H05, 76.2 mmx76.2 mm, Chang Huang/Kunshan Hwak\
uan,
VSC_VX2235wm, Green II 1
33 C-00008044 40-D010947 Seat Assy, A220Z1-H05, Black(ABS-757-J01)/Siliver(TY4818A), Hontech,\
 Green II 1
34 N/A 79-D011065 Shipping Package Information for , A220Z1-H05, VSC 1
35 P-00008034 78-D011076
Cushion, A220Z1-H05, EPS, White, 565 mmx520 mmx75 mm, Li Ta, EPS-FORM(T\
op), Green II
1
36 P-00008035 78-D011075
Cushion, A220Z1-H05, EPS, White, 565 mmx520 mmx65 mm, Li Ta, EPS-FORM(B\
ottom), Green II
1
37 P-00008036 78-D011103 Carton, A220Z1-H05, 522 mmx154 mmx575 mm, Chen Yi Paper, VSC_VX2235wm, G\
reen II 1
38 DC-00008040 76-D011105
MENU for A220Z1-H05, Complex, 4C, Yi Ching/Car Tong Kunshan, VSC_VX2235w\
m CD-ROM,
Green II 1
39 HW-00000553 42A9930008
SCREW, 3, P=0.5 mm, L=4 mm, Pan Head, Phillips Cross Recess, Hama Naka M\
otogawa/Shin
Yee/Hama Naka Shoukin/Shiho/Shye Ching, Green I 13
40 HW-00006041 42A9940007
SCREW, 4, P=0 mm, L=11.8 mm, Hexagon Stand Off, Socket, Hama Naka Motoga\
wa/Shiho/Shin
Yee/Shye Ching, Green I
4
41 HW-00004042 42-D000649
SCREW, M4, P=0.7 mm, L=8 mm, Round Head, Phillips Cross Recess, plate co\
lor Zn,
Screw_with_Washer, Shye Ching/Hama Naka Motogawa, head D8, Green I 1
42 N/A 41-D007402 Metal Frame Front, M220Z1-L01, SECC 0.6t, Fomgder/CLT_Metal, Green II 1
43 N/A 44-D008027 Backlight Unit, A220Z1, Forhouse/ROE, Green II 1
44 N/A 41-D008024 Cover AD Assy, A190A2, SECC, Jiin Ming, Left_Side 4 connector_VESA100*10\
0, Green II 1
45 CB-00008014 32-D008479 FFC, CFC2128/862P060068D, 36 Pins, Tennsure/Hung Fu,  AL foil, Green I 2
46 HW-00008002 42-D009237 SCREW, M3, P=0.5 mm, L=2.5 mm, Pan Head, Phillips Cross Recess, Shye Chi\
ng, Green II 3
47 B-00008026 27-D009542
Lips With Audio, DAC-19M009 AF, 00 A, 5 V/3 A, 13.8 V0.7 A, I TYPE, 7 mA\
, 1710 V, Delta
Dongguan_LIPS, Green II 1
48 B-00008027 35-D010627
PCBA for , A220Z1-Z01-H, A170E2-E03-H-S6, 1101-02, Rev.04, ITC/USI, ODM,\
 RTD2120S-LF,
Green II 1
49 N/A 10-D011770
Software (EDID_DVI), A220Z1, VSC591ED01, ViewSonic, Checksum(6A), VX\
2235wm,  Digital
Port, Green II 1
50 N/A 10-D011769
Software (EDID_D-SUB), A220Z1, VSC591EA01, ViewSonic, Checksum(15), \
VX2235wm,  Analog
Port, Green II 1
51 N/A 10-D012223
Software (BIOS), A220Z1, 22Z1LR3002, ViewSonic, Checksum(Bank1:0xEC, \
 Bank2:0xD5),
RSDS, RTD2120, Dual+Audio/Analog+Audio, Green II 1
52 CB-00002083 32F0000004 Accessory Cable, DVI, Black, Jceprocable, DVI-D(M) TO DVI-D(M), S/L,\
 W/2F, Green I 1
53 CB-00005678 32F2818011 Accessory Cable, Audio, Black, Jhen Vei, A170E1-H01, 28AWG, Green I 1
54 CB-00005851 32-D002132
Accessory Cable, D-Sub, JV-4777, Black, Pins-Pins, Jhen Vei, 30AWG, Redu\
ce Shield Rate, Green I
1
55 A-00005071 32-D002330
Power Cord, LP-53 & VCTF 0.75mm^2 3C 6 BLACK & LS-13J, BLACK, BSMI, 1800\
 mm, Linetek,
Green I 1
  BOM LIST (VX2235wm-1)
ViewSonic Corporation
 Confidential - Do Not Copy    VX2235wm-1 
 63  
						

							
8. Exploded Diagram and Exploded Parts List
 
ViewSonic Corporation 
Confidential - Do Not Copy    
VX2235wm-1 
 64
  
						

							
ViewSViewSonic Model Number: VS11349
Rev: Rev: 1a
Seria
lSerial No. Prefix: QA5
Item ViewSonic P/N Ref. P/N Description Qty
1 C-00008040 40-D010960 COVER_HINGE_LEFT_22W15 1
2 C-00008039 40-D010946 COVER_HINGE_RIGHT_22W15 1
3 N/A 40-D010955 REAR_ASSY_22W15 1
4 N/A PM0ZFH0R00 22 Wide,Monitor,D-Sub+DVI+Audio 1
5 N/A 40-D010955 BEZEL_ASSY_22W15 1
6 N/A 35-D0110238 PCBA_A220Z1-Z01-H-K2 1
7 CB-00008015 32-D011077 FFC_15pin 1
8 C-00008043 40-D010942 STAND_ASSY_22W15 1
9 C-00008044 40-D010947 SEAT_ASSY_22W15 1
10 N/A 44-D009236 Backlight Unit,A220Z for MFM 1
11 N/A N/A Maylar 1
12 N/A 27-D008552 Lips Without Audio,DAC-19M009 BF 1
13 N/A 35-D009418 PCBA for A220Z1-Z01-P 1
14 N/A 41-D008024 Cover AD Assy 1
15 N/A 32-D009479 FFC,36pin 2
16 HW-00008002 42-D009237 SCREW,M3,P=0.5mm,L=2.5mm,Pan Head 3
17 HW-00000553 42A9930008 SCREW,M3,P=0.5mm,L=4mm,Pan Head 7
18 HW-00004042 42-D000649 SCREW,M4,P=0.7mm,L=8mm,Round Head 1
19 HW-00000553 42A9930008 SCREW,M3,P=0.5mm,L=4mm,Pan Head 4
20 N/A 42A993008 SCREW,M3,P=0.5mm,L=5mm,Pan Head 2
21 HW-00000555 42A9930014 SCREW,M3,P=0.5mm,L=8mm,Pan Head 6
22 HW-00008003 42A9930015 SCREW,M3,P=1.27mm,L=10mm,Pan Head 1
EXPLODED PARTS LIST (VX2235wm-1)
ViewSonic Corporation  Confidential - Do Not Copy    VX2235wm-1 
 65  
						

							
 
ViewSonic Corporation  
Confidential - Do Not Copy    
VX2235wm-1 
 66
 
ViewSonic Model Number: VS11349
Rev: 1aItem ViewSonic P/N Ref. P/NLocationQty
1 N/A VX2235wmLCD Monitior 1
2 P-00008033 78-D009624PE Foam Bag 1
3 P-00008036 78-D011103Carton 1
4 P-00008035 78-D011075EPS Foam (Bottom) 1
5 P-00008034 78-D011076EPS Foam(Top) 1
6 C-00008044 40-D010947Seat Assy 1
7 A-00005071 32-D002330Power Cord 1
8 CB-00005851 32-D002132Monitor Cable 1
9 CB-00005678 32F2818011Audio Cable 1
10 CB-00002083 32F0000004DVI Cable 1
11 DC-00008040 76-D011105Menu (Quick Setup) 1
12 N/A Different region (refer to BOM) Customer Label 1
13 N/A Different region (refer to BOM) Warranty Registration card 1
PACKING PART LIST ( VX2235wm-1 ) 
						

							
ViewSonic Corporation Confidential - Do Not Copy    VX2235wm-1 
 67 
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 
DVI-D 
Digital Video  5V 
Signal 
Audio In 
DC-12V 
12V 
3.3V