Many business class safes, including the FireKing and Schwab Corp brand (now owned by Sentry Safe) have electronic locks for access control and security. Today we take a look at replacing the batteries on the Keypad Lock for the LaGard Basic 3600 series. These locks are used on many of the media safes and media cabinets, safes that are designed to protect backup computer media such as DLT tapes, LTO tapes and even external hard drives.
Operating the Electronic Lock under Normal Operation

LaGard Basic Electronic Lock
1. Type in the 6-digit combination on the keypad.
2. Two beeps means that the combination was enter successfully and the combo was accepted. Three beeps means the combination was not accepted.
3. If you enter four consecutive wrong electronic combiinations you will lockout the keypad for 5 minutes.
4. After the 5 minute lockout of 5 minutes, the entry of two consecutive wrong combos will start a new 5 minute penalty period.
5. If you enter the 6 digit combination and hear two beeps but the safe or vault door does not unlock, it is time to replace the keypad batteries.
How Do I know when the batteries need replaced? When the batteries in the lock are low the electronic keypad may give the normal two beep signal that the combo is accepted and the safe may be opened, yet the safe will still not open. The reason for this is that weak batteries can still be strong enough to make the beep sound and light the LED, yet are not quite strong enough to pull the solenoid and open the lock on the safe or vault door.

Replacement of 9 Volt batteries
Changing the 9 Volt Batteries on the 3600 Series Electronic Safe Lock
Step 1. Gently place the heel of your hand under the lock keypad.
Step 2. Gently push up until keypad becomes free.
Step 3. Replace the low batteries with quality 9 Volt alkaline batteries.
Step 4. Gently reattach the lock keypad and verify that the lock opens correctly.
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