Printronix L5000 Series Maintenance Manual page 251

Interface signals
These are the interface signals that are transmitted (viewed from the MPU board
side):
Signal
Clock (CLK)
Received Data (RXD)
Transmitted Data (TXD)
Interrupt (INT)
Reset (RES)
Signal pin assignments
The signals above are assigned to the MPU board connecter (CN3) and I/O board
connecter (CN32) pins, as follows:
Pin No.
1
2
3
4
5
6
7
8
9
10
Electrical and Wire Data
MPU board
Signal
CLK–P
CLK–N
RXD–P (TXD–P on I/O board side)
RXD–N (TXD–N on I/O board side)
TXD–P (RXD–P on I/O board side)
TXD–N (RXD–P on I/O board side)
INT–P
INT–N
RES–P
RES–N
I/O board
6–13