Startup Diagnostics 29
2
Status light blinks and
lamp light on
Failed startup
diagnostics.
Insufficient energy
reaching photodiode
array because of air
bubble or dirty flow
cell can cause shutter
diagnostic to fail.
Flush the flow cell (see Section 3.1.1,
Flushing the Flow Cell).
Flush the flow cell (see 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)
I.D. tubing connected to the detector
waste outlet.
Weak lamp. Replace lamp (see Section 3.2,
Replacing the Lamp).
Shutter failure
message.
Shutter failure. Run the Shutter diagnostic. For
details, refer to the “PDA Diagnostics
Window” topic in the
Millennium
32
Online Help
Find tab.
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 996 detector
IEEE-488 address is unique and
within the range 2 to 29 (see the
Millennium
32
System
Installation/Configuration Guide
).
2. Rescan the IEEE-488 bus. For
details, see the “Scanning the
bus/LAC/E Card for Serial
Instruments” topic in the
Millennium
32
Online Help
Find tab.
Table 2-1 996 Detector Troubleshooting (Continued)
Symptom Possible Cause Corrective Action
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