PROLYTE ANALYZER
16
2.g Sample Detector Verification
1. Remove the electrode housing from the analyzer. See the proLYTE Operator’s Manual
for further details.
2. Remove the sample detector from the front housing.
3. Install the sample detector into the sample detector receptacle.
▲ Do not install the electrode housing or pump tubing at this time.
4. Proceed to the DIAGNOSTICS? menu and perform the SAMPLE DETECTOR
TEST?.
-With the sample detector installed, the value on the display screen should be less
than 200.
-With the test in progress, remove the sample detector. The display should rapidly
change to 255.
If the sample detector test meets these specifications, resume normal operation.
A value of 255 with the sample detector installed indicates a bad connection. Proceed
to STEP5 to check the sample detector circuit.
5. Reinstall the sample detector. Look at the left side of the sample detector. A red light
must shine from the LED hole. If there is no red light, install a known good sample
detector. If there is still no red light, replace the Display Assembly. Refer to the
REPAIR SECTION for information.
6. If the TEST sample detector red light is on, check the four connecting pins on the
ORIGINAL sample detector. The pins must face straight out forming a rectangle. If
the pins are bent against the black plastic body, straighten the pins using a small flat
head screwdriver.
7. Reinstall the original sample detector and repeat STEP 4.
-If the red light comes ON: Reassemble the proLYTE and perform a SOLUTIONS
PRIME and a SAMPLE DET. TEST. Resume normal operation.
-If the red light remains OFF: Install a new sample detector.
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