Tally Genicom Tally Mono Laser T9220 - Manual (Page 208)

F.3
F
Installing Memory, Barcode and
PostScript DIMMs
Additional printer memory and the PostScript option are
provided on DIMMs (Dual In-line Memory Modules). This
procedure is applicable to either option.
N OTE :
For using the printer with the PostScript driver, you need to
install an optional PS/Barcode DIMM.
1
Turn the printer power off and unplug all cables from the
printer.
2
Remove the two screws on the rear of the printer, then
remove the control board cover.