Advanced Instruments 4250 User Manual

The Advanced
®
Model 3250/4250 Service Manual
62
51. “Test Time-out Error”
52. “Thermoelectrics
System Failure”
53. Unknown error
54. Wrong instrument
model displayed
The test has taken too long to complete.
The thermoelectric driver may not be
functioning properly.
Undefined software event has occurred.
Processor board option switch SW1.
1. Make sure the sample tube is not empty,
and make sure the sample is not too vis-
cous.
2. Make sure there is heat transfer fluid in
the cooling well.
3. Check the stir amplitude.
4. Check the sample/probe block bin setting.
5. Check the cooling assembly well.
6. Use A/D test to verify cooling system
function.
1. Use the A/D test to check the cooling
assembly.
2. Check Q1B driver.
3. Check application board.
1. Turn the power off and on.
2. If problem persists, replace the processor
board.
Reset switch SW1 (see Option Switch Setup
Table).
Symptom Explanation Suggested Action

Advanced Instruments 4250 Specifications

General

Brand	Advanced Instruments
Model	4250
Category	Medical Equipment
Language	English