HP 8550mfp Service Manual - Page 423
until TOP OUTPUT BIN or LEFT OUTPUT BIN, From the Service Mode Menu, press
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Note Notes The pick-up rollers, feed rollers, registration roller, transfer belt press clutch (CL4), cleaning roller press cam and solenoid (SL1), fuser, transfer belt, and output feed roller can be exercised during the paper path test. For safety reasons, the fuser, high-voltage supplies, and scanner are all turned off during testing. 1 From the Service Mode Menu, press MENU until PAPER PATH appears. 2 Press ITEM until REPETITIONS appears. 3 Press - VALUE + to display the number of repetitions (1 to 10). 4 Press SELECT to choose the number of repetitions. 5 Press ITEM until the desired input source appears. 6 Press - VALUE + until ON or OFF appears on the display. 7 Press SELECT. You can select more than one input source for the test. 8 Press ITEM until OUTPUT= appears on the display. 9 Press - VALUE + until TOP OUTPUT BIN or LEFT OUTPUT BIN appears on the display. 10 Press SELECT to choose an output destination. 11 Press ITEM until EXECUTE TEST appears on the display. 12 Press SELECT to perform the paper path test. To stop the paper path test, press CANCEL JOB. The transfer drum can be removed with the right upper door open and the right cover interlock defeated (see figure 214 on page 425). However, media might not feed past the transfer area unless 11-by-17 inch or A3-sized media is used. EN Aids to troubleshooting 421