6. EDID (Rewrite EDID data to EEPROM)
If we need to rewrite the EEPROM data, please confirm the following steps.
1. Plug in VGA Cable; we can rewrite the EDID data to EEPROM by using “EDID Rewrite” program.
2. If the “EDID Rewrite” process finished, please pull out VGA cable and press ‘’2’’+’’
▲
’’ at the same time.
3. Pull out AC power cable or press power key to restart.
7. Upload firmware to MCU via VGA Cable
7.1
Connect ISP board between monitor and PC as below configure
7.2
Before plug in the power cord, make sure keep “
▲
“ key to be pressed, when power on you can enter ISP mode.
7.3
8051ispwriter.exe will detect automatically which MCU used in this monitor. Do it as the order shown on the screen,
choose the corresponding firmware version, and load to MCU.
7.4 After finish, please plug out power cable and re-start monitor again.
ISP Board
R
S23
2
9P
IN
D-SUB
15P
IN
D-SUB
15P
IN
PC
VGA
output
LCD Monitor
D-Sub
Insert to
RS232 9pin
CON on PC
Normal
shipping
cable
Service
cable
+12V Adapter
22
ViewSonic Corporation
Co
nfidential
-
Do
Not
Copy
VA902/b
Summary of Contents for VA902B - 19" LCD Monitor
Page 32: ...6 Black Screen and backlight turn on 29 ViewSonic Corporation Confidential Do Not Copy VA902 b...
Page 49: ...46 ViewSonic Corporation Confidential Do Not Copy VA902 b 9 PCB Layout Main board Top layout...
Page 50: ...47 ViewSonic Corporation Confidential Do Not Copy VA902 b POWER board...
