Printronix Series 5 - Manual (Page 189)

5–14 Interfaces
The shipping kit for this printer includes 220 ohm pull-up and 330 ohm pull-down
alternate terminating resistors. If you install the 220 ohm pull-up resistor, you
must also install the 330 ohm pull-down resistor. The following table lists the
three terminating resistor configurations you can install:
Configuration Pull-Up (RP1) Pull-Down (RP2)
Factory Default 470 ohm 1K ohm
Alternate 1 220 ohm 330 ohm
Alternate 2 1K ohm none
Removal and Installation
The procedure for removing and installing terminating resistors is provided in
your Maintenance Manual .
IMPORTANT
!
This is an involved maintenance procedure; only a trained
technician should perform this procedure.