Service Manual
Page 407
... Verify that the connector J78 on The duplexing-unit fan (FN107) is firmly seated. 2. For 56.1 errors, reinstall all non-HP paper-handling devices. 57.01 Error - If the fan does not operate during the initialization sequence, replace the duplex-printing unit. If the ...1. Continue Turn Off Then On the formatter. 55.01.YY = Incoming parity error 55.02.YY = Outgoing parity error 55.04.YY = Communications timeout 56.X ERROR - Remove all of the input devices (optional 500-sheet feeders or the envelope feeder.) For 56.2 errors, reinstall the output bin, the stapler/ stacker,...
... Verify that the connector J78 on The duplexing-unit fan (FN107) is firmly seated. 2. For 56.1 errors, reinstall all non-HP paper-handling devices. 57.01 Error - If the fan does not operate during the initialization sequence, replace the duplex-printing unit. If the ...1. Continue Turn Off Then On the formatter. 55.01.YY = Incoming parity error 55.02.YY = Outgoing parity error 55.04.YY = Communications timeout 56.X ERROR - Remove all of the input devices (optional 500-sheet feeders or the envelope feeder.) For 56.2 errors, reinstall the output bin, the stapler/ stacker,...