Repairs - Endress+Hauser eco-graph Mise En Service

6. Fault finding, repair and maintenance

6.4 Repairs

62
Problem
Display does not operate.
Diskette drive does not
operate.
Digital input does not
operate.
Relays do not operate.
If the unit is to be re-used or sent for repair it should be well packed. Optimum
protection is offered by the original packaging.
Repairs should only be done by the suppliers service organisation or skilled and
trained personnel. An overview of the service network can be found on the back page
of these instructions.
Hint:
When returning a unit for repair please describe both the fault and the application.
Cause
No illuminated LED =>
Power supply or CPU
defetive.
LED illuminates =>
Display defective.
LED illuminates => CPU
defective.
Diskette drive defective.
CPU defetive.
Incorrect connection.
Incorrect setting up.
Power supply defective.
Incorrect connection.
Incorrect setting up.
Power supply defective.
Solution
Please replace power
supply or CPU
(dependent on fault).
Please replace the
Display.
Please replace the CPU.
Please replace the
Diskette drive.
Please replace the CPU.
Please check the
connections and digital
input circuit.
Please check the digital
input setting up.
Please check the digital
input in the service level
(see chapter 6.1) and if
necessary replace the
power supply.
Please check the
connections and the
relay circuit.
Please check the relay
setting up.
Please check the relays
in the service level (see
chapter 6.1) and if
necessary replace the
power supply.