3M 3804 Resetting the circuit breaker, Troubleshooting No desensitizing or resensitizing, 4-19

3M Library Security System 3M Accessories

Verifying that materials are protected with 3Mt Tattle-TapetSecurity Strips

When the VERIFIER switch is in the ON position, the verifier light will identify which items in your collection are protected with 3Mt Tattle-Tapetsecurity strips.

To verify that an item is protected with a 3M security strip, resensitize the item as described on the previous page.

Make sure the Sensitize/Desensitize switch is in the SENSITIZE position.

Place the item in the center of the Model 955 with the item gently touching the vertical portion of the unit.

If the item is protected, the verifier will light. If the verifier does not light, then you will want to install a 3M Tattle-Tape security strip to protect the item.

Problem: The optical sensor area may have accumulated dust.

Solution: Clean this area by blowing or brushing dust from the optical sensors.

!Caution

To reduce the risk of electrical shock, do not use liquids to clean the optical sensor.

Optical

Sensor

Area

Resetting the circuit breaker

The Model 955 bookcheck will not operate if the circuit breaker is open.

SReset the circuit breaker on the back of the bookcheck one time.

SIf the bookcheck does not operate correctly after resetting the circuit breaker one time, call 3M service at 1-800-328-0067.

Troubleshooting

No desensitizing or resensitizing

Symptom: The Model 955 will not desensitize or resensitize any strip.

DThe Model 955 fails to operate or “thump.”

Problem: The Model 955 is not connected to a working power outlet.

Solution: Plug the Model 955 into a working power outlet.

Circuit Breaker

E 3M 1999 September 4-19