Printronix T4204 - Manual (Page 184)

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Chapter 4 IEEE 1284 Parallel Interface
Table 10 lists the three terminating resistor configurations you can install:
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.
Table 10. Terminating Resistor Configuration
Configuration Pull-Down (RP1) Pull-Up (RP2)
Factory Default 1K ohm 470 ohm
Alternate 1 330 ohm 220ohm
Alternate 2 none 1K ohm