12/03 Rev. 3.00-01
SERVICE MANUAL
General Service
TTX
350
17
Changing the serial interface to RS485 mode
The serial interface of the TTX 350 can be
operated alternatively in either RS232 or in
RS485/422 mode. This can be changed by
means of two jumpers on the mainboard. The
factory setting of the interface is RS232 mode.
To change modes, please proceed as follows:
P
Regarding this point, see also the
section "Periphery set-up"
Printers with periphery set-up
1. Remove the peripheral board.
P
Regarding this point, see the section
"Printed circuit boards".
2. Position the two jumpers (1, 2) as shown
in the diagrams on the right.
•
Centre diagram: Setting for RS232.
•
Diagram below: Setting for RS485/422
Printers without periphery set-up
1. Detach back cover.
P
Regarding this point, see the section
"Housing".
2. Continue from item 2 of the description
"Printers with...".
Tools
- Hexagon socket 3 mm
1
2
2
1
