HP LaserJet 4050 Printer series - DIN Pin-Outs

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DIN Pin-Outs

The HP Fast InfraRed Receiver uses the eight position mini-
DIN connector. A functional description of the pins follows.

Figure 6

Eight-Position Mini-DIN Connector

*no connect for FIR

DIN Connector Pin-Outs

PIN Number

Signal Name

1 (Indicator LED)


2 (single-ended signal)


3 (Differential data)

-TX (Transmit Data)

4 (Ground)


5 (FIR differential data)*


6 (Differential data)

+TX (Transmit Data)

7 (5 volt power)


8 (FIR differential data)


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HP Fast InfraRed Receiver