Service manual

Firmware Update Procedure
1. The monitor’s firmware update for VA903m/b have two method.
Download the MCU IC by the fire machine. This procedure is finished in SMT.
ISP Method. When the monitor’s BIOS isn’t exist or firmware isn’t final program, this method Is worked by ISP
Cord with monitor.
2. VA903m/b monitor upgrade firmware by ISP Cord.
Equipment Needed
- USB cable for print port *1
- VGA cable*1
- LPT cable (25pin)*1
- AC power cable*1
- ISP fire cord (the fixture is made in TE ) for firmware upgrade*1
- Power adapter for firmware upgrade (this adapter is made in TE)*1
- A computer with Windows XP
- VA903m/b monitor ( no firmware)
- a additional monitor for system display
- ISP & ISP3.0program
NOTE:
The fixtures for firmware upgrade provide two different methods to fire. Please check you monitor’s Main board,
refer to MCU-RSIC type and choose the method.
Below form appear the relation between the method and the MCU-RSIC type
PIN1-2 CLOSED
PIN2-3 CLOSED
JUMPER
REALTEK
M-STAR & NOVATEK
ASIC
OTHER
MYSON
MCU
B
A
METHOD
TEST PC Fixture ISP_CORD Fixture POWER_ADAPTER
LPT PORT
ViewSonic Corporation Confidential - Do Not Copy VA903b-1_ VA903m-1
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