GE DigitalFlo XGM868i, Руководство по обслуживанию

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DigitalFlow™ XGM868i Service Manual 15
Chapter 2. Error Codes
E4: Signal Quality
Problem:
The signal quality is outside the limits programmed in the
Channelx-Set up-Signal
submenu of the
Keypad Program .
Cause:
The peak of the upstream or downstream correlation signals has fallen below the correlation peak limit, as
set in the
Channelx-Set up-Signal
submenu. This may be caused by a flowcell or electrical problem.
Action:
Check for sources of electrical interference and verify the integrity of the electronics console by
temporarily substituting a test flowcell that is known to be good. Check the transducers and relocate them,
if necessary. See Chapter 3,
Diagnostics , for further instructions.
E5: Amplitude Error
Problem:
The signal amplitude exceeds the limits programmed in the
Channelx-Set up-Signal
submenu of the
Keypad Program .
Cause:
Excessive levels of an attenuating gas, such as CO
2
, may be present in the flowcell. Solid or liquid
particulates may be present in the flowcell.
Action:
Refer to Chapter 3, Diagnostics , to correct any flowcell problems.
E6: Cycle Skip, Accel.
Problem: The acceleration exceeds the limits programmed in the
Channelx-Set up-Signal
submenu of the Keypad
Program .
Cause: This condition is usually caused by poor flow conditions or improper transducer alignment.
Action:
Refer to Chapter 3, Diagnostics , to correct any flowcell and/or transducer problems.
E7: Analog Out Error
Problem:
The current in the analog output circuit exceeds the limits for the analog output port.
Cause: The output load exceeds the specified limits for the analog output port.
Action:
Make sure the output load is <600 ohms for the
Slot 0
analog outputs or is <1,000 ohms for an analog
outputs option card in
Slot 1
.
E8: Temperature In
Problem:
This message indicates a temperature input error.
Cause:
The temperature exceeds the specified limits for the analog/RTD inputs option card or no input device is
connected.
Action:
Check the temperature transmitter and the connecting cable. Refer to Chapter 1, Calibration , and
recalibrate the analog/RTD inputs option card.