APC XS 900 Leaflet

Monitor

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FAX

External Disk or
CD / DVD Drive

Computer

Building Wiring

Fault Indicator

Phone Jack

To Computer USB

Port

Computer

There are four status indicators (lights) on the front

panel of the Back-UPS (On Line, On Battery, Overload,

and Replace Battery).

 - is lit whenever utility power is

powering the Battery Backup outlets.

 - is lit whenever the battery of

the Back-UPS is powering equipment connected to the

Battery Backup Outlets.

Four Beeps Every 30 Seconds - this alarm is

sounded whenever the Back-UPS is running On

Battery. Consider saving work in progress.

 - is lit whenever power demand has

exceeded the capacity of the Back-UPS.

Continuous Tone - this alarm is sounded

whenever the Battery Backup outlets are

overloaded.

Circuit Breaker - the circuit breaker button

located on the rear panel of the Back-UPS will

stick out if an overload condition forces the Back-

UPS to disconnect itself from utility power. If the

button sticks out, disconnect non-essential

equipment. Reset the circuit breaker by pushing

the button inward.

 - is lit whenever the battery is

near the end of its useful life, or if the battery is not con-

nected (see above). A battery that is near the end of its use-

ful life has insufficient run-time and should be replaced.

Chirps for 1 Minute Every 5 Hours - this

alarm is sounded whenever the battery has failed

the automatic diagnostic test.

Note: Allow the Back-UPS to charge for a full eight (8)

hours prior to use.
Press the front panel Power ON/OFF switch and observe

that the following events occur after pressing and

releasing the switch:

• The green On Line indicator flashes.

• The yellow On Battery indicator lights while 

a Self-Test is being performed.

• When Self-Test has successfully completed, 

only the green On Line indicator will be lit.

• If the internal battery cartridge is not 

connected (see Step 1 above), the green On 

Line indicator and red Replace Battery 

indicators will light. The Back-UPS will also 

emit a chirping sound.

Continuous Beeping - this alarm is sounded

whenever a low battery condition is reached.

Battery run-time is very low. Promptly save any

work in progress and exit all open applications.

Shutdown the operating system, computer and

the Back-UPS.

NOTE: Macintosh Users - for full USB performance,

use OS 9.22 or higher.
If Autoplay is not enabled on the computer, proceed

as follows:
1. On the computer desktop of the display, double-

click on My Computer.

2. Double-click on the CD-ROM drive icon and

follow the on-screen instructions.

If the rear panel Building Wiring Fault (red)

indicator is lit, a potential shock hazard exists

due to one of the following conditions:
   •  Open or high resistance ground
   •  Hot or neutral polarity reversed
   •  Overloaded neutral circuit
Improper building wiring should be

caused the fault is corrected.
Note: Improper building wiring will not

prevent the Back-UPS from operating, but it

will limit its protection capability.

The Back-UPS features a transient
voltage surge-suppression (TVSS)

screw for connecting the ground
lead on additional surge
suppression devices such as
network and data line surge
protectors.

From Data Line

TVSS

Follow the

on-screen

instructions.

On Line

On Battery

Overload

Replace Battery

RJ-45

USB

Wall

Outlet

Building Wiring Fault

Circuit Breaker

Push to Reset

Input: 120V~
15A, 50-60Hz

BA
T

T

E

R

Y
B

A

C

KU
P

SURGE

O

NL
Y

Wall

Outlet

Building Wiring Fault

Wall

Outlet

Wall

Outlet

Computer

Modem Port

Wall

Outlet

To 120 VAC, 50-60 Hz

Network Jack

Computer

Network Port

32 - 104

o

F (0 - 40

o

C)

✔

✘

30 cm

✔

w

 

w

 

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