Waters 2996, Operator'S Manual

Page: 38 / 84

16 Diagnostics and Calibration
2
Status light blinks and
lamp light on Failed startup
diagnostics Reseat and check alignment of flow
cell.
Flush the flow cell (Section 3.1.1,
Flushing the Flow Cell).
Insufficient energy
reaching photodiode
array because of air
bubble, or dirty flow
cell can cause shutter
diagnostic to fail Flush the flow cell (Section 3.1.1,
Flushing the Flow Cell).
To prevent air bubbles from forming,
check that there is a 1- to 2-foot (30- to
60-cm) length of 0.009-inch
(0.23-mm) ID tubing connected to the
detector waste outlet.
Weak lamp Replace lamp (Section 3.1.2,
Removing the Flow Cell).
Shutter failure
message Shutter failed Run the Shutter diagnostic. For details,
see Millennium
32
Help.
Detector not
responding to
Millennium
32
Workstation
Detector not
connected to
busLAC/E or to
LAC/E
32
Acquisition
Server in the
Millennium
32
Workstation
Check IEEE-488 cable connections,
tighten connectors.
Incorrect IEEE-488
address 1. Ensure that the 2996 Detector
IEEE-488 address is unique and
within the range 2 to 29 (see the
Millennium
32
System Installation
and Configuration Guide).
2. Rescan the IEEE-488 bus. For
details, see Millennium
32
Help.
Table 2-1 2996 Detector Troubleshooting (Continued)
Symptom Possible Cause Corrective Action