Wasp Bar Code WLS 9500 - Manual (Page 31)

Maintenance, Troubleshooting
& Technical Specifications 3-3
Introduction
This chapter provides suggested scanner maintenance, troubleshooting, technical specifications, and signal descriptions
(pinouts).
Maintenance
Cleaning the exit window is the only maintenance required. A dirty window may affect scanning accuracy.
• Do not allow any abrasive material to touch the window
• Remove any dirt particles with a damp cloth
• Wipe the window using a tissue moistened with ammonia/water
• Do not spray water or other cleaning liquids directly into the window.
Troubleshooting
Table 3-1. Troubleshooting
Problem Possible Causes Possible Solutions
Beeper Indications
The scanner emits frequent beeps. No power to the scanner. Check the system power. If the configuration
requires a power supply, re-connect the power
supply.
Incorrect host interface cable is used. Verify that the correct host interface cable is
used. If not, connect the correct host interface
cable.
Interface/power cables are loose. Check for loose cable connections and re-
connect cables.
Scanner emits low/high beeps. Input error, incorrect bar code or Cancel bar
code was scanned. Scan the correct numeric bar codes within range
for the parameter programmed.
Scanner emits low/high/low beeps. The Code 39 buffer was erased or there was an
attempt to clear or transmit an empty buffer. Normal when scanning the Code 39 Buffering
Clear Buffer bar code or upon attempt to
transmit an empty Code 39 buffer.
Scanner emits low/high/low/high beeps. Out of host parameter storage space. Scan Default Parameters on page 4-5.
Out of memory for ADF rules. Reduce the number of ADF rules or the number
of steps in the ADF rules.
Scanner emits high/low beeps. The scanner is buffering Code 39 data. Normal.
Scanner emits four long low beeps. A transmission error was detected in a
scanned symbol. The data is ignored. This occurs if a unit is not properly configured.
Check option setting.
Scanner emits four short high beeps (USB
only). Scanner has not completed initialization. Wait several seconds and scan again.
Decoding Bar Codes
Scanner emits the laser, but does not decode the
bar code. Scanner is not programmed for the correct bar
code type. Program the scanner to read that type of bar
code. See Chapter 7, Symbologies.
Bar code symbol is unreadable. Scan test symbols of the same bar code type to
determine if the bar code is defaced.
Distance between scanner and bar code is
incorrect. Move the scanner closer to or further from the
bar code. See Decode Zone on page 2-10.