3-36 Troubleshooting, Testing, and Maintenance
Performance tests
These tests help you further isolate the problem’s cause:
• Extended Test Routine for the controller
• Pressure Transducer Calibration test
• Transducer test
• Solvent Proportioning Valve Pair test
For problems you cannot resolve, contact Waters Technical Service for
assistance.
Self-diagnostics
The Waters controller performs these self-diagnostic tests on startup:
• The 68000 processor, its clock and reset circuitry, LEDs, and drive
circuitry, ROM-containing code preceding first entry
• ROM, associated address decoding, bus latch, and drive circuits
• Addresses at each RAM location, associated address decoding, bus latch,
and drive circuits
• Video RAM
• EEPROM location with interrupt, read/write, associated address
decoding, bus latch, and drive circuits
• Real-time clock, oscillator, counters, and associated interrupt circuitry
High Pressure
Limit
The value entered on the SETUP screen was
exceeded. If the high-pressure limit was set relatively
low, check for an increase in backpressure (such as an
older column with accumulated debris at the inlet
and blockage in the fluid path).
Caution: To avoid damaging any equipment, wait about 3 minutes after
shutting down your system before disconnecting any interconnecting
cables.
Shutdown messages (Continued)
Message Description
To Next Page
Loading...
