MiTAC 7521 PLUS/N service manual 7521Plus / N N/B MAINTENANCE, Flash ROM BIOS, LED Indicators

7521Plus / N N/B MAINTENANCE

1.3.3 Flash ROM (BIOS)

7521 plus system utilizes the state-of-the-art Flash EEPROM technology. User can upgrade the system BIOS in the future just running the program from MiTAC.

1.3.4 LED Indicators

System has ten status LED indicators to display system activity which include above keyboard and below touch pad:

(1)Four LEDs indicators below touch pad :

From left to right that indicates Mail Received status, AC POWER, BATTERY POWER and BATTERY STATUS:

•MAIL RECEIVED STATUS : This LED lights to indicate that User received E-mail status. User can define color of LED (yellow or green) to indicate relation of transmitter.

•AC POWER : This LED lights green when the notebook is being powered by AC, and flash (on 1 second, off 1 second) when Suspend to DRAM is active using AC power. The LED is off when the notebook is off or powered by batteries, or when Suspend to Disk.

•BATTERY POWER : This LED lights green when the notebook is being powered by batteries, and flashes (on 1 second, off 1 second) when Suspend to DRAM is active using battery power. The LED is off when the notebook is off or powered by AC, or when Suspend to Disk.

•BATTERY STATUS : During normal operation, this LED stays off as long as the battery is charged. When the

battery charge drops to 10% of capacity, the LED lights red, flashes per 1 second and beeps per 2 second. When AC is connected, this indicator glows green if the battery pack is fully charged, or orange (amber) if the battery is being charged.

(2)Six LED indicators above keyboard :

From left to right that indicates CD-ROM DRIVE, HARD DISK DRIVE, FLOPPY DISK DRIVE, NUM LOCK, CAPS LOCK and SCROLL LOCK.

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