Acrosser AR-R5800A - Manual (Page 16)

AR-B5800 User Manual
28. SYS_FAN1 (System FAN connector 1). 29. JP1 (For LAN1/LAN2 Bypass Function
Select.).
PIN SIGNAL
1 GND
2 +12V
3 Fan speed data
Pins 1 and 2 shorted
(Default): Forced Normal.
Pins 2 and 3 shorted:
Controlled By CPLD.
Otherwise : Forced Bypass
30. RTC1 31. CCMOS1.
CMOS Backup Battery:
An onboard battery saves the CMOS memory to
keep the BIOS information stays on even after
disconnected your system with power source.
Nevertheless, this backup battery exhausts after
some five years.
Once the error message like “CMOS BATTERY
HAS FAILED” or “CMOS checksum error”
displays on monitor, this backup battery is no
longer functional and has to be renewed
32. JP4 (For LAN3/LAN4 Bypass Function
Select.).
Pins 1 and 2 shorted
(Default): Forced Normal.
Pins 2 and 3 shorted:
Controlled By CPLD.
Otherwise : Forced Bypass
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