6.2.2
Power
This is a general purpose AC / DC adapter which converts 90~240 Vac to a stabilized DC voltage: 12
Volts, with a rated output current of 4.16A. The electrical specification is described below.
Rated Input Voltage 90~240 Vac, 50 / 60Hz
Operation Input Voltage 90~260 Vac, 47 ~ 63Hz
Input Current
<1.5A
Inrush Current
<100A@120Vac
Standby Input Voltage
12Vdc
Output Voltage Regulation
+/-5%
Output Ripple & Noise
120mVp-p
Rate Output Current
<3.5A
Turn-on delay
<3secs
6.2 Power (Inverter) Board
This is a specific power (inverter) board for VX912 monitor with output of 40W / 12V / 3.5A. It provides
12 VDC to drive the four cold cathode fluorescence tubes in the backlight.
6.2.1 The inverter's electrical specification is described below.
Rated Input Voltage
12Vdc
Input Voltage Range
11.4 ~ 12.6 Vdc
Input Current
<2A
Input
On / Off control Voltage 2~3.3 for on, 0~1 for off
Rated Output Strike-on Voltage
1500Vrms
Rated Output Voltage
710Vrms at 7mA
Rate Output Frequency
40~50KHz
Output
Rated Output Current 7~8 mA
27
ViewSonic
Corporation
Co
nfidential
-
Do
Not
Copy
VX922-1
Содержание VX922-1
Страница 40: ...Pattern 5 Pattern6 Pattern 7 Pattern 8 Pattern 9 37 ViewSonic Corporation Confidential Do Not Copy VX922 1...
Страница 57: ...Step 2 Press Write to IC icon 54 ViewSonic Corporation Confidential Do Not Copy VX922 1...
Страница 61: ...Please press 58 ViewSonic Corporation Confidential Do Not Copy VX922 1...
Страница 64: ...Write DDC to IC Step 1 Select 24C02 61 ViewSonic Corporation Confidential Do Not Copy VX922 1...
Страница 66: ...Step 2 Press Write to IC icon 63 ViewSonic Corporation Confidential Do Not Copy VX922 1...
Страница 81: ...1 Display color abnormal 6 Troubleshooting Flow Chart 78 ViewSonic Corporation Confidential Do Not Copy VX922 1...
Страница 83: ...3 Monitor white screen 80 ViewSonic Corporation Confidential Do Not Copy VX922 1...
Страница 84: ...4 Monitor black screen 81 ViewSonic Corporation Confidential Do Not Copy VX922 1...
Страница 85: ...5 Analog input always shows NO SIGNAL 82 ViewSonic Corporation Confidential Do Not Copy VX922 1...
Страница 86: ...6 Digital input always shows NO SIGNAL 83 ViewSonic Corporation Confidential Do Not Copy VX922 1...
Страница 89: ...86 ViewSonic Corporation Confidential Do Not Copy 8 Exploded Diagram and Spare Parts List VX922 1...
Страница 92: ...9 Block Diagram 89 ViewSonic Corporation Confidential Do Not Copy VX922 1...
Страница 93: ...90 ViewSonic Corporation Confidential Do Not Copy VX922 1...
Страница 103: ...Main Board Control Board 100 ViewSonic Corporation Confidential Do Not Copy 11 PCB Layout Diagrams VX922 1...