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If the above solutions do not fix the problem,
the 965DSP-B may need repair.
Please make a note of the conditions when any
failure occurred and record any error messages
that may have appeared on the screen, then call
3M Telecom Repair Service at 800 426 8688 for
further details on repair service.
Symptom Cause Solution
Unit does not turn on Discharged battery pack. Charge battery pack.
AC/DC adaptor Check AC/DC
NMH battery pack old. Replace battery pack.
Screen goes blank Battery voltage low. Charge battery pack.
Dark lines across screen Battery voltage low. Charge battery pack.
Error Messages Battery voltage low. Charge battery pack.
Inaccurate results Battery voltage low. Charge battery pack.
Test lead broken. Replace test lead.
Improper connections. Check Connections.
No results Test lead broken Replace test lead.
Improper connections. See on-screen
hookups.
Resistance reads less than Test Leads dirty Clean Test Leads
999 M Ohms when test leads
disconnected.
Error messages during Test Leads not shorted Check Connections.
Self-Calibration. properly when prompted.
Repair:
Many apparent failures with the 965DSP-B can
be corrected by simple procedures.
disconnected. adaptor cords.