Printer-Driven Interface Manual Rev.4/30/20102
Replacement / Removal of Interface
The interfaces can be upgraded in the field to/from Printer-Driven, Standard Serial, Multi-Serial and/or USB connections to
meet the changing needs of your POS system.
Disconnect RJ-12 connector from receipt printer and interface.
Unscrew the two (2) side screws of the interface located on the back
of the cash drawer.
Locate internal cable connected to the latch mechanism with an 8-position male Molex
connector and carefully disconnect the middle connection.Do not disconnect the end
of the cable that is connected to RJ-12 Plug.
Upgrade or replace interface by reconnecting the internal cable’s middle
connection with the Molex connector of new interface. If upgrading to Standard,
Multi-Serial, or USB, the circuit board must not be touched, please hold interface
by the mounting plate. Screw both sides of mounting plate back in place.
Cash Drawer Maintenance
Troubleshooting:
Cash Drawer does not open electronically
MMF Cash Drawer’s Printer-Driven Interface connects directly to a receipt printer.
This connection requires the POS application to send the proper opening codes
to the printer, which will then send the signal to open the Cash Drawer. Consult
the documentation or manuals for your particular printer for the proper open
codes.
Verify the correct end of the RJ-12 printer cable is connected to the cash drawer as
well as the printer.
Verify correct position of the lock. If using a three position lock, the lock would
need to be in the 12 o’clock position for MediaPLUS Series cash drawers or 3
o’clock position for Heritage Series cash drawers to open electronically.
Verify Baud Rate, Parity, Data Bits, and Stop Bits are set correctly for your software.
Baud Rate should be set between 110-9600. If your computer is not set within this
specification, correct it in your printer software.
Cash Drawer does not open manually or electronically
Make sure all packing tapes were removed from the cash tray and that no foreign
objects are obstructing the cash tray from opening.
Support: Please visit MMF POS on-line at www.mmfpos.com for FREE Technical Support
or call 1-800-769-1954.
For replacement parts and/or
accessories, contact your supplier
or visit our website at
http://www.mmfcashdrawer.com
NOTE: Molex connector end that
should be carefully disconnected
