HP LaserJet 5p/mp Service Manual - Page 72

HP LaserJet 5P Printer Service Supplement Troubleshooting Infrared Port Not Responding Situation The connection cannot be established or the transmission seems to be taking longer than usual. Solution Make sure the device you are using is IrDAcompliant; look for an IrDA symbol on the device or refer to the manual for the device for IrDA specifications. Make sure that the operating system on your computer includes an IR driver and your application uses a HP LaserJet 5P/5MP compatible printer driver. Make sure you have positioned the device within the range of operation and that no objects, such as a finger, paper, books, or bright light, are interfering with the connection. Also make sure the two IR ports are clean (free from dirt and grease). Bright light of any kind (sunlight, incandescent light, fluorescent light, or light from an infrared remote control, such as those used for TVs and VCRs) shining directly into one of the IR ports may cause interference. The printer prints only part of a page or document. Position the device closer to the IR port on the printer. The connection has been broken during transmission. If you move the portable device during transmission, the connection can be broken. IrDA-compliant devices are designed to recover from temporary connection interruptions. Re-establish the connection (depending on the device you are using, you can have anywhere from 3 to 40 seconds to reestablish the connection). 65