Seiko TM-U590/U590P - Manual (Page 19)

Setting Up the Printer 1-7
Connecting the Display Module
Plug the cable connector (provided with the direct connection
display module) securely into the printer’s display module
connector until it clicks.
CAUTION:
Be sure not to connect this cable to the drawer kick-out
connector, which is to the left of the power supply
connector. Do not connect a telephone line to the
display connector. If you do, the printer and the
telephone line may be damaged.
Notes:
To remove the cable, squeeze the connector and pull it out.
The display module can be used only for the serial interface.
Grounding the Printer
You need a ground wire to ground your printer. Make sure that the
wire is AWG 18 or equivalent.
1. Make sure that the printer is turned off.