HP Designjet 250c Service Manual - Page 171

Bail Cycle Test This tests the operation of the bail system, service station and carriage drive. 1 In service mode 1, press Bail Cycle Test. Bail Cycle Test All LEDs turn off. If the plotter has not yet initialized the media axis, the carriage moves to the rightĆhand side of the plotter and back to the service station. The following routine begins: a The carriage moves out of the service station and back in, to position itself over the engaging lever. This causes the bailĆlift mechanism gear and the left driveĆroller gear to engage. b The top of the roller rotates towards you. This causes the bail to be gently raised and then lowered. c Again the carriage moves out of, and back into, the service station. However, this time it parks beyond the engaging lever, so that the gears are not engaged. d The top of the roller rotates slightly forward and then back. Status. After the first cycle, the Normal LED turns on (steady) if the bailĆcycle test has not found an error. If an error occurs, the Normal LED flashes. OK Failed Output to the Serial Port (Viewing Output ' 8-36) Error code: If an error has occurred, this code specifies more precisely what has gone wrong during the test. Include this information in the report to your HP Response Center, if the problem cannot be fixed. 2 The test continuously repeats itself until you Shift press the Shift key. You can also run the bail cycle test in service mode 2. However, in this case, the Normal LED is not used to indicate an error as above. It's better to use service mode 1. C4699Ć90000 Troubleshooting 8Ć37