Allen-Bradley MediaChecker 1788-MCHKR Manual page 37

Symptom 1: Display goes blank.
Action
1. Turn the rotary switch to OFF, wait 5 seconds and turn
the switch to TEST.
2. Replace the batteries (see "Replacing Batteries" on
page 36).
3. Return the MediaChecker for repair. See "Returning the
MediaChecker for Repair" on page 39.
Symptom 2: The MediaChecker seems to be measuring incorrectly.
1. Perform a self-test on the MediaChecker. See
"Performing a Self-Test" on page 38.
2. Calibrate the MediaChecker as described on page 10.
3. Return the MediaChecker for repair. See "Returning the
MediaChecker for repair" on page 39.
* To disable Battery Save, turn the rotary switch to OFF, then press and hold
Table 15. Troubleshooting the MediaChecker
Result
Display is active
Display still blank
Display is active
Display still blank
Self-test fails
Self-test passes
Calibration not effective
The Battery Save feature turned the MediaChecker
off.*
Go to step 2.
Batteries were too low to run the MediaChecker.
Go to step 3.
Problem appears to be a MediaChecker
malfunction.
Internal circuitry is defective. Go to step 3.
Go to step 2.
Go to step 3.
Problem appears to be a MediaChecker
malfunction.
E
while turning the rotary switch to TEST.
1788-UM002A-US-P – April 2000
Maintenance
Explanation
37