Software/Firmware Upgrade Process - BenQ SX930 Service Manual

4.3 Software/Firmware Upgrade Process

A. Basic Operating
(a) Standby Mode：
User can just plug in power cord, then projector will enter standby mode. Power LED will show
Red for around 1 sec, then show Orange continuously as the figure shown below. When the
power LED shows Red, it means system is not ready for standby. In another word, if the power
LED shows Orange, it means system is in standby mode and the DLP system has no power
support, except MCU and its related circuits.
When standby mode, system power consumption will be less than 0.5 Watt.
User can turn on projector after plugging in power cord whatever the power led is red or
orange.
(b) Download Mode：
This mode is applied for firmware download.
If operator wants to enter this mode, he should press and hold both keypad-POWER and
Keypad-AUTO at the same time, then plug in power cord. After plugging power cord, still
hold POWER +AUTO at least 5 seconds, and make sure Power/TEMP/LAMP LED shows flash
Red continuously as the figure below shown, then release the two keypads
mode, system will be supported by full power but will not turn on projector. Operator can use
DLP composer to download new firmware.
(Notice: After entering Download Mode, pressing Power key will not turn on the projector. So
you could press Power key after entering Download Mode operation, to check if it really enters
Download Mode.)
Standby Mode Download Mode
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(Notice)
. In download