Operating Instructions
Chapter
8
CLV 490 Bar Code Scanner
8 009 993/O824/20-12-2004
©
SICK AG · Division Auto Ident · Germany · All rights reserved
8-9
Troubleshooting
8.5
Troubleshooting
The following are required for troubleshooting purposes using the tables below:
•
These Operating Instructions
•
Tools
•
A tape measure (up to 3 m (9.84 ft))
•
A digital measuring device (current/voltage measurement)
•
A PC running CLV-Setup
•
A 3-core RS 232 data cable (null modem cable), pins 2 and 3 crossed,
e. g. no. 2 014 054
8.5.1
General malfunctions: CLV not ready
Malfunction
Possible cause
Remedy
The "Device Ready" LED is not lit.
The "Result 1" output is not outputting a
pulse (default setting: Device Ready)
After switching on the power supply:
•
The CLV has no power.
•
The CLV has diagnosed a device error
during the self-test.
During operation:
•
The CLV is not in "Reading" mode.
•
The CLV has deactivated the laser diode
10 min. (default setting) after the start of
the current reading pulse (trigger mode:
sensor input/serial interface).
•
Check wiring (power connector fitted
securely to the CDM 490 Connection
Module).
Measure voltage at pin 1 and pin 5.
•
Switch CLV off and on again. Does the
LED light up? If not, contact SICK Service
department
•
Return to Reading mode using the "CLV-
Setup" program. See
Reading mode (standard operating
mode), Page 6-39
•
Terminate reading pulse.
Check the reading pulse function. Supply
new pulse. See
Table 8-5: Troubleshooting: restoring operation (Reading mode)