59
The Advanced
®
Model 3250/4250 Service Manual
26. Low Fluid Level in
Freezing Chamber
27. Memory Allocation
Error
28. “New Software
Version”
29. “No Parameters in
RAM”
“Parameter RAM
Failed”
30. “No Plateau, Repeat
Test”
31. No Results to Recall
32. “Out of Range”
33. Printer advances paper
and appears to be
printing, but the paper
is blank.
1. The heat transfer fluid pump may be
malfunctioning, or there may be a
leak or obstruction in the fluid sys-
tem.
2. An insufficient amount of fluid is
being pumped with each head
up/down cycle.
Internal memory management error,
allocated reserved memory conflict.
EPROM has been changed, or new soft-
ware has been downloaded.
The battery-backed RAM has lost its
data or has been cleared.
The instrument has lost the calibration,
data, and probe bin numbers from mem-
ory.
This may occur during some software
updates.
The sample did not reach a valid
plateau.
Recall memory was empty.
The sample tested was beyond the range
of the instrument.
Paper has been installed backwards.
1. Evaluate the functioning of the heat trans-
fer fluid pump per the instructions found
in the Maintenance section.
2. If an obstruction is suspected, refer to
Osmometer/Cryoscope Well Cleaning,
located in the Maintenance section.
1. Turn power off, then on.
2. If problem persists, replace the processor
board.
1. Check system settings and proceed.
2. If problem persists, replace processor
board.
1. Reset sample and block probe bin num-
bers. Recalibrate the instrument.
2. Reset the stir amplitude.
3. Reset the buzz point (3250 only).
4. Reset plateau mode/range.
5. Reset instrument serial number.
6. Reset any other custom settings
7. If problem persists, replace processor
board.
1. Make sure the sample is not too viscous.
2. Check the sample probe.
3. Make sure there is heat transfer fluid in
the cooling well.
4. Check buzz point setting.
1. Run a test and try again.
2. If problem persists, reboot and check for
Low Battery message.
3. Contact Advanced Instruments for Hot-
Line Service.
Dilute the sample and retest.
Check to make sure the paper roll is properly
installed. The paper must feed from the bot-
tom of the roll. Refer to the User’s Guide for
additional information.
Symptom Explanation Suggested Action
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