ViewSonic VG910S Service Manual - Page 29
Show No signal on screen., Keypad cannot work.
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UPC - 766907009033
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6.4 Show "No signal" on screen. Check that signal level of R612, R613, R614, R641, R642, R643, R644, R645, R646, R647, R648 Yes No No Check the Hsync and Vsync Failure point 1. IC401 failure. 2. Signal cable is disconnected. 6.5 Keypad cannot work. Check the the cable is fully conneted between the interface board and key board Yes Failure point 1. D305, D306 ~ D311, D312 failure. 2. TACT switch failure. No Failure point The cable is disconnected. ViewSonic Corporation Confidential - Do Not Copy VG910s/b 26
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6.4
Show “No signal” on screen.
Check that signal level of R612, R613, R614, R641, R642, R643, R644, R645, R646, R647, R648
Check the Hsync and Vsync
Failure point
1. IC401 failure.
2. Signal cable is disconnected.
Yes
No
No
6.5
Keypad cannot work.
Check the the cable is fully conneted between the interface
board and key board
1. D305, D306 ~ D311, D312 failure.
2. TACT switch failure.
Failure point
The cable is disconnected.
Yes
Failure point
No
26
ViewSonic Corporation
Co
nfidential
- Do Not Copy
VG910s/b