Lexmark Optra T Reference page 332

BUSY Driver / INIT* Receiver for Optra E310, Optra E312, and Optra M410
The following diagram illustrates the BUSY driver and the INIT* receiver for
Optra E310, Optra E312, and Optra M410.
INIT*
Connector Pin
50K ohm ±5%
Signal
1K ohm ±10%
33 ohm ±10%
1680 pF ±20%
FCT 2828 33 ohm ±10%
8-29
+5V
FCT 2828
GND
1K ohm ±10%
180 pF ±20%
GND
Interfaces
Signal
+5V
BUSY
Connector Pin