DAD 6.1L/DAD 2.1L/MWD 2.1L user manual V6700, version 3.2
Troubleshooting
35
Troubleshooting
First Measures
1. Check all cabling.
2. Check all screw fittings.
3. Check whether air has gotten into the supply lines.
4. Check device for leaks.
5. Pay attention to system messages.
LAN
Go through the following steps, in case no connection between the com-
puter and the devices can be established. Check after each step if the prob-
lem is solved. If the problem cannot be located, call the Technical Support.
1. Check the status of the LAN connection in the Windows task bar:
Connected
Connection not established
If no connection was established, test the following:
Is the router switched on?
Is the patch cable connected correctly to the router and the com-
puter?
2. Check the router settings:
Is the router set to DCHP server?
Is the IP address range sufficient for all the connected devices?
3. Check all connections:
Are the patch cable connected to the LAN ports and not the WAN
port?
Are all cable connections between devices and router correct?
Are the cables plugged in tightly?
4. If the router is integrated into a company network, pull out the patch cable from
the WAN port.
Can the devices communicate with the computer, even though the
router is disconnected from the company network?
5. Turn off all devices, router, and computer. Firstly, turn on the router and sec-
ondly turn on the devices and the computer.
Has this been successful?
6. Replace the patch cable to the device with that no connection could be estab-
lished.
Has this been successful?
7. Make sure that the IP port of the device matches the port in the chromatogra-
phy software.
Possible Problems and Rectifications
Problem
Solution
Baseline drift
Maintain constant temperature conditions during the measurement.
Device cannot be
switched on
Inspect the power cable to ensure that it is plugged into the power sup-
ply.
Device cannot be cali-
brated
1. Insert the test cell.
2. Inspect the calibration with a weak absorbing eluent.
