Appendix A — Specifications
PM4i Mid-Range Printer User’s Manual 119
One yellow and one green LED indicate the network status.
Parallel IEEE 1284 Interface
The parallel port supports Universal Plug and Play (UPnP) and
additional status reporting through IEEE 1284 nibble ID mode.
Understanding the Ethernet LEDs
LED Status Description
Green On Link
Off No link
Blinking Network activity
Yellow On 100BASE-TX
Off 10BASE-T
Parallel IEEE 1284 Pins and Descriptions
Pin Description Transmitter Comments
1 nStrobe Host
2 to 9 Data 0-7 Host
10 nAcknowledge Printer
11 Busy Printer
12 Perror Printer
13 Select Printer
14 nAutoFd
15 to 16 Not connected
17 Chassis ground
18 External +5 V DC Max 500 mA
19 to 30 Signal ground
31 nInit
32 nFault Printer
33 Signal ground
34 to 35 Not connected
36 nSelectIn
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