If the “signals” byte is not 00, issue the “i” command with a value of FF HEX. This will clear out the “signals” byte.
6.If this step is reached with no problems, all of the components are communicating properly. Perform the “t” FIFO test (“f”). For the number of tests, enter 100. For the number of bytes per test, enter 131072. Look at the “FIFO.TST” file to see if any errors occurred during the FIFO test. If there are any miscompare errors, there is a hardware problem with the controller.
If there are no miscompares, but there are DMA failures, this could be caused by the device driver or the controller. Try the test again in this case. If there are still failures, the components are not working properly and data transfers will be unreliable.
7.If this step is reached with no problems, all of the components are communicating properly and the controller and driver are working properly. Make sure the copier shows “Ready to Copy” on its display. Perform the “t” test button print (“b”). LBTEST will not show any progress for this test because all of the control is done within the controller. If the controller is communicating with the copier, an 8.5” wide test pattern will be printed. This pattern should repeat for approximately 18” in length. If nothing happens within 90 seconds, perform this test again. If there is still no printout within another 90 seconds, the controller is not communicating with the copier. Cycle the power on the copier and repeat from step 1. If the problem persists, there is an unknown problem.
8.If this step is reached with no problems, perform the “t” test print (“p”). The same rules apply here as in step 7. The only difference is that the test pattern should be a checkerboard pattern which is 16” x 16” with a 1” band of gray at the top of the pattern. The LBTEST program will display the progress of the print. If the print engine could not be captured, make sure the copier shows “Ready to Copy” on its display and try again (perhaps several times). If the engine could not be captured after several tries, retrieve the status of the copier as described in the Command: “s” section above. (See the interface spec. for details of the status commands.) If there are no problems, such as ‘warming up’, ‘out of paper’, “service call’, etc, try the print again. If the copier still does not print, there is an unknown problem.
9.If this step is reached with no problems, perform the “t” test scan (“s”). Make sure the copier shows “Ready to Copy” on its display before this test. LBTEST will display the progress of the scan. After displaying “Insert plot into scanner”, the user has approximately 25 seconds to set a plot into the scanner. If no plot has been set by that time, the test will end and you must perform the test again. Note the messages given by LBTEST to determine if problems occur. If there are no problems, the files “TEST.FIL” and
Print Server Manual | 67 | A741 |