Page 392 of 504 Appendix C: Meridian Modular Telephones add-on modules installation553-3001-367 Standard 3.00 August 200516 Tighten the screws• Reconnect all cords, connect the new 24v AC transformer to the set.• Plug in the new transformer into the 110v AC commercial electricaloutlet.• Place the telephone in the normal operating position.Note 1: Place the label supplied with the MPDA or MCA on the outsideof the bottom cover of the telephone. This allows proper identification andtracking of the option level of the set.Note 2: If an ADM3, ADM5, or ADM11 terminal is used in conjunctionwith the DB-25 connector-C interface connector in the AsynchronousProgrammable Data Adapter, pin 22 in the DB-25 connector cable mustbe disconnected. These ADM terminals will go into test mode if this pin isnot disconnected.End of ProcedureProcedure 69Connecting the data terminal1 Connect the DB-25 connector-C interface connector from the dataterminal to the matching header connector in the back of the telephone.2 Insert the two captive screws in the connector body into the threadedholes in the header connector and secure tightly to prevent accidentaldisconnection during data terminal operation.End of ProcedurePower Supply Board (NTZK models)Use the following procedures to add a Power Supply Board to the telephonefor connection to a transformer or closet power supply. Use Procedure 70 onpage 393 for the M2006 and M2008. Use Procedure 71 on page 397 for theM2616 and M2216ACD.