The Advanced
®
Model 3250/4250 Service Manual
61
42. “Sample Freeze Error,
Repeat Test”
43. “Sample Pre-Freeze,
Repeat Test”
44. “Sample Probe
Failure”
45. “Sample Probe Open?”
46. “Standards Reversed?
Repeat Calib”
47. “Stir System Failure”
48. “Supervisor Key
Needed, Press Stop”
49. “System Error: Trap”
“System Error: NMI”
“System Error: Unknown”
“System Error: Requests”
“System Error: Primitive”
“System Error: Interrupt”
“System Error:
Communications”
“Illegal Error Code:
“Unknown Error”
“Memory Allocation
Error”
50. “Test Cancelled”
The sample did not freeze properly.
The sample has frozen prematurely
(before the “buzz”).
The sample probe has failed (usually
shorted).
The sample probe resistance is greater
than 10558 ohms.
The instrument was expecting “high”
calibrator standard and detected a value
below, equal or close to the “low” cali-
brator standard.
The stir/freeze mechanism may not be
functioning properly.
Operator/Supervisor keyswitch is in the
Operator position.
The software did not execute properly.
The STOP button was pressed during
the test.
1. The sample may have been contaminated.
Retest with a fresh sample.
2. Check the freeze amplitude.
3. Check the sample probe.
1. The sample may have been contaminated.
Retest with a fresh sample.
2. Check sample/block probe bin settings.
3. Check the stir amplitude.
4. Check for stir driver noise.
Check the sample probe resistance (2,300
ohms ±300 at room temp).
1. Is the probe plugged in?
2. Check the sample probe resistance (2,300
ohms ±300 at room temp).
Recalibrate the instrument with the calibrator
standards in the correct order.
1. Check the stir and freeze amplitudes.
2. Check stir driver/control circuits.
3. If problem persists, replace the applica-
tion board or stir driver.
1. Press the STOP key.
2. Set the keyswitch to Supervisor position.
1. Turn the power off and on.
2. If problem persists, replace the processor
board.
Retest with a fresh sample.
Symptom Explanation Suggested Action
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