Service manual

46
8575
8575
A N/B Maintenance
A N/B Maintenance
1.3.8 CMOS Battery
CR2032 3V 220mAh lithium battery
When AC in or system main battery inside, CMOS battery will consume no power.
AC or main battery not exists, CMOS battery life at less (220mAh/5.8uA) 4 years.
Battery was put in battery holder, can be replaced.
1.3.9 I/O Port
One Power Supply Jack.
One External CRT Connector For CRT Display
Supports two USB port for all USB devices.
One MODEM RJ-11 phone jack for PSTN line
One RJ-45 for LAN.
Headphone Out Jack.
Microphone Input Jack.
Line in Jack
One Card Bus Sockets for one type II PC card extension
1.3.10 Battery current limit and learning
Implanted H/W current limit and battery learning circuit to enhance protection of battery.