User`s guide

24 Duet ™ Scanner
Isolated Scanner Test
Did the
scanner pass
Selftest
?
NO
NO
NO
YES
YES
YES
Is the
green LED
lit dimly
?
Will the
scanner read
bar codes*
?
NOTE
If you have a scanner that uses
Power-Off theTerminal (P.O.T.), you
cannot perform this test unless you
are able to substitute a cable that uses
an AC/DC power supply connected as
shown in Figure 10.
1. Disconnect Power
Disconnect the AC/DC power
supply from the AC power outlet.
2. Disconnect Interface
Disconnect the scanner's interface
cable connector from the host
terminal.
3. Reconnect Power
After you have disconnected the
interface cable connector, recon-
nect the AC/DC power supply.
4. Selftest Routine
The scanner performs a complex
Power-Up Selftest that checks
operation of the scanner hardware
and software. If successful, the
beeper sounds four tones and the
green lamp lights, indicating
the scanner passed the Selftest.
Potential problems:
• Record the number
of tones emitted by
the scanner.
Call your system
support personnel.
Potential problems:
• Lamp failed
• Scanner failure
Call your system
support personnel.
Potential problems:
• Poor bar code quality
• Bar code symbology
is not enabled
• Scanner failure
Call your system
support personnel.
Scanner O.K. Problem is either interface
cable, or terminal.
* With the interface cable disconnected from the host terminal, the scanner may only
read one or two bar codes before it must be reset. Unplug and reconnect the AC/DC
power supply to reset the scanner.