3M 965DSP-B instruction manual Repair, Symptom Cause Solution Unit does not turn on

Repair:

Many apparent failures with the 965DSP-B can be corrected by simple procedures.

Symptom	Cause	Solution
Unit does not turn on	Discharged battery pack.	Charge battery pack.
	AC/DC adaptor	Check AC/DC
	disconnected.	adaptor cords.
	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.

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.

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