User manual

B: Troubleshooting
B.1 General Problems
Most problems can be solved by making sure that the camera has been installed properly and
assigned a valid, unique IP address. Before proceeding to specific troubleshooting sections,
please check the items listed in Table B-1.
B.2 Power-up Problems
Table B-1: General Troubleshooting
Area to Check Explanation
Physical connections
Ensure that the physical connections are secure. The cables should be gently
but firmly seated into their connectors. Check your cables and connectors for
missing or bent pins or other damage. Replace them if necessary. If the
connectors are damaged, return the unit to Cohu for service.
Serial or relay device connections
Ensure that the device connectors and cables comply with the pin
connections as shown in the Pinouts appendix.
IP address
The camera must have a unique IP address on the LAN. Duplicate IP
addresses can result in many errors, such as lost data.
Table B-2: Power-up Troubleshooting
Problem Suggestion
I plugged everything in properly,
but the Green Status LED on the
back of the camera doesn’t flash.
Ensure you are using the supplied power supply or a good quality power
supply that meets the input specifications. Using any other power supply can
damage the camera. Ensure that the power supply is in working condition.
Try connecting it to a voltmeter to see if it works on that device. If not,
contact Cohu to get a replacement power supply.
I can t access the camera, and the
OK LED is blinking very rapidly.
There is probably a boot error. Check the cabling. Unplug the camera and
plug it back in to force the camera to reboot. If the problem persists, proceed
to the Boot Related Problems section.
B.3 Reload/Boot-related Problems
Before troubleshooting boot problems, ensure that you are using a valid software loadfile. The
IQEYE.SYS loadfile should not be altered. If necessary, obtain a new boot file from Cohu. Table
B-3 lists other areas to check to ensure that the camera can read and use the loadfile.
Table B-3: Boot-related Troubleshooting
Protocol What to Check
TFTP
Check the file and directory permissions. The file should be world readable.
Ensure the loadhost name and address are specified correctly. Ensure the file and pathnames are
enclosed in quotes to preserve case.
Ensure that TFTP is enabled on the host; several major UNIX vendors ship their systems with
TFTP disabled by default.
52 of 60