MiTAC 7521 PLUS/N service manual LED Indicators, IO port, Cmos Battery

7521Plus / N N/B MAINTENANCE

LED Indicators

‰Lower ICON LEDs on M/B Mail Received status (left 1) AC POWER (left2)

BATTERY POWER (right 2) BATTERY STATUS (right 1)

‰Upper ICON LEDs on M/B CD-ROM/MO (left 1) HARD DISK DRIVE (left 2) FLOPPY DISK DRIVE (left 3) NUM LOCK (right 3)

CAPS LOCK (right 2) SCROLL LOCK (right 1)

IO port

‰HP HSDL-3600#007 FIR Module Meet IrDA Physical Layer Specification 1 cm to 1 Meter Operating Distance 30 degree Viewing Angle

Support Two Channels - 2.4 Kb/s to 115.2Kb/s and 1.15Mb/s to 4.0 Mb/s

CMOS Battery

‰CR2032 3V 220mAh lithium battery

‰When AC in or system main battery in, CMOS battery will no power consumption.

‰AC or main battery not exists, CMOS battery life at less (220mAh/5.8uA) 4 years.

‰In normal condition, battery life is at less over 4 years. Battery was put in battery holder.

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