ViewSonic VS11307, Servise Manual

Page: 17 / 68

ViewSonic Corporation
Confidential - Do Not Copy
VX1935wm
-1
14
5. Adjustment Procedure
1. Function Test
1.1 Product
- 19” LCD Monitor
1.2 Test Equipment
- Color Video Signal & Pattern (or PC with WXGA resolution and a sound card)
1.3 Test Condition
Before function test and alignment, each LCD Monitor should be run-in and warmed
up for at least 30 minutes with the following conditions:
(a) In room temperature,
(b) With full-white screen, RGB, and Black
(c) With cycled display modes,
640*480 (H=43.27kHz, V=85Hz)
800*600 (H=53.7kHz, V=85Hz)
1024*768 (H=68.67kHz, V=85Hz)
1280*1024 (H=79.97kHz, V=75Hz)
1440*900 (H=70.63kHz, V=75Hz)
1.4 Test Display Modes & Pattern
1.4.1 Compatible Modes
Digital Analog
1. 640 x 480 @ 60Hz, 31.5kHz
2. 640 x 480 @ 67Hz, 35.0kHz
3. 640 x 480 @ 75Hz, 37.5kHz
4. 640 x 480 @ 72Hz, 37.9kHz
5. 640 x 480 @ 85Hz, 43.27kHz
6. 720 x 400 @ 70Hz, 31.5kHz
7. 800 x 600 @ 56Hz, 35.1kHz
8. 800 x 600 @ 60Hz, 37.9kHz
9. 800 x 600 @ 75Hz, 46.9kHz
10. 800 x 600 @ 72Hz, 48.1kHz
11. 800 x 600 @ 85Hz, 53.7kHz
12. 832 x 624 @ 75Hz, 49.7kHz
13. 1024 x 768 @ 60Hz, 48.4kHz
14. 1024 x 768 @ 70Hz, 56.5kHz
15. 1024 x 768 @ 72Hz, 58.1kHz
16. 1024 x 768 @ 75Hz, 60.0kHz
17. 1024 x 768 @ 85Hz, 68.67kHz
18. 1280 x 1024 @ 60Hz, 63.4kHz
19. 1280 x 1024 @ 75Hz, 79.97kHz
20. 1440 x 900 @ 75Hz, 70.63kHz 1. 640 x 480 @ 60Hz, 31.5kHz
2. 640 x 480 @ 67Hz, 35.0kHz
3. 640 x 480 @ 75Hz, 37.5kHz
4. 640 x 480 @ 72Hz, 37.9kHz
5. 640 x 480 @ 85Hz, 43.27kHz
6. 720 x 400 @ 70Hz, 31.5kHz
7. 800 x 600 @ 56Hz, 35.1kHz
8. 800 x 600 @ 60Hz, 37.9kHz
9. 800 x 600 @ 75Hz, 46.9kHz
10. 800 x 600 @ 72Hz, 48.1kHz
11. 800 x 600 @ 85Hz, 53.7kHz
12. 832 x 624 @ 75Hz, 49.7kHz
13. 1024 x 768 @ 60Hz, 48.4kHz
14. 1024 x 768 @ 70Hz, 56.5kHz
15. 1024 x 768 @ 72Hz, 58.1kHz
16. 1024 x 768 @ 75Hz, 60.0kHz
17. 1024 x 768 @ 85Hz, 68.67kHz
18. 1280 x 1024 @ 60Hz, 63.4kHz
19. 1280 x 1024 @ 75Hz, 79.97kHz
20. 1440 x 900 @ 75Hz, 70.63kHz
1.4.2 Function Test Display Pattern
Item Test Content Pattern Specification Remark
1 Frequency &
Tracking
Fine Line Moire Eliminate visual wavy
noise. Figure 1
2 Contrast/Brightness 16 Gray Scale 16 gray levels should be
distinguishable. Figure 2
3 Boundary Horizontal &
Vertical
Thickness
Horizontal and Vertical position
of video should be adjustable to
be within the screen frame. Figure 3
4 RGB Color
Performance
RGB Color
Intensities Contrast of each R, G, B, color
should be normal. Figure 4, 5,
6