![background image](http://html.mh-extra.com/html/viewsonic/vlcds26064-2w/vlcds26064-2w_service-manual_1021326012.webp)
6.2 IC954 EEPROM data see Appendix-B item a.6.3 For the EDID data see Appendix B. VP2000s
analog & DVI-A are the same as item h. For the DVI-D input 1 see item i.
7.
USB test (VP201s/b only)
7.1 Use a USB test hub such as “UPT2 USB2.0 8-port tester” to test USB up stream and down stream
transfers. Each port must pass the test.
7.2 Use a PC to check the USB VID, which should be
0543
,
and the PID, which should be
1169
.
7.3 For USB test settings see Appendix E.
8. For auto alignment, it is necessary to execute the auto image adjust command for 3 DOS modes (640x350,
720x400,
640x400).
E
. Analog and Digital timing chart.
Mode
No.
1 2 3 4 5 6 7 8 9 10
Mode Name
TEXT
640 x
350
VGA
640 x
400
VESA
640 x
480
VESA
640 x
480
MAC
640 x
480
VESA
640 x
480
VESA
640 x
480
VESA
640 x
480
TEXT
720 x
400
VESA
800 x
600
Horizontal Freq.
31.468 31.468 24.688 31.469 35.000 37.861 37.500 43.269 31.469 35.156
Video clock Freq.
25.175 25.175
19.75
25.175 30.240 31.500 31.500 36.000 28.322 36.000
Sync. Polarity
+
-
-
-
-
-
-
-
-
+
H.
total
(Dots) 800 800 800 800 864 832 840 832 900 1024
H.
sync.
(Dots)
96
96
64
96
64
40
64
56
108 72
H.
back
porch
(Dots) 48 48 80 48 96 128 120 80 54 128
H.
active
(Dots) 640 640 640 640 640 640 640 640 720 800
H.
front
porch
(Dots) 16 16 16 16 64 24 16 56 18 24
Vertical
Freq.
(Hz) 70.087 70.087 49.673 59.940 66.667 72.809 75.000 85.008 70.087 56.250
Sync. Polarity
-
+
+
-
-
-
-
-
+
+
V.
total
(Lines) 449 449 497 525 525 520 500 509 449 625
V.
sync.
(Lines)
2 2 4 2 3 3 3 3 2 2
V.
back
porch
(Lines)
60 35 10 33 39 28 16 25 35 22
V.
active
(Lines)
350 400 480 480 480 480 480 480 400 600
V.
front
porch
(Lines)
37 12 3 10 3 9 1 1 12 1
9
ViewSonic
Corporation
Co
nfidential
-
Do
Not
Copy
VP201b/s-1
Summary of Contents for VLCDS26064-2W
Page 26: ...5 3 6 Click Gprobe 4 23 ViewSonic Corporation Confidential Do Not Copy VP201b s 1 ...
Page 27: ...24 ViewSonic Corporation Confidential Do Not Copy VP201b s 1 ...
Page 31: ...Connect to D Sub Signal cable 28 ViewSonic Corporation Confidential Do Not Copy VP201b s 1 ...
Page 34: ...31 ViewSonic Corporation Confidential Do Not Copy VP201b s 1 ...
Page 35: ...5 3 9 Open VP2000BATCH 32 ViewSonic Corporation Confidential Do Not Copy VP201b s 1 ...
Page 37: ...5 3 11 Press Enter key 34 ViewSonic Corporation Confidential Do Not Copy VP201b s 1 ...
Page 63: ...60 ViewSonic Corporation Confidential Do Not Copy VP201b s 1 9 Block Diagram ...
Page 65: ...Main Board 62 ViewSonic Corporation Confidential Do Not Copy VP201b s 1 ...
Page 66: ...Main Board 63 ViewSonic Corporation Confidential Do Not Copy VP201b s 1 ...
Page 67: ...Main Key Board 64 ViewSonic Corporation Confidential Do Not Copy VP201b s 1 ...
Page 68: ...DVI Board 65 ViewSonic Corporation Confidential Do Not Copy VP201b s 1 ...
Page 69: ...Power Board 66 ViewSonic Corporation Confidential Do Not Copy VP201b s 1 ...
Page 70: ...Inverter Board 67 ViewSonic Corporation Confidential Do Not Copy VP201b s 1 ...
Page 72: ...Main Board Bottom 69 ViewSonic Corporation Confidential Do Not Copy VP201b s 1 ...
Page 73: ...Power Board 70 ViewSonic Corporation Confidential Do Not Copy VP201b s 1 ...
Page 74: ...Power Board Bottom 71 ViewSonic Corporation Confidential Do Not Copy VP201b s 1 ...
Page 75: ...72 ViewSonic Corporation Confidential Do Not Copy VP201b s 1 Inverter Board ...
Page 76: ...73 ViewSonic Corporation Confidential Do Not Copy VP201b s 1 Inverter Board Bottom ...