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Service Tests
4-21
HP DesignJet 430, 450C and 455CA Printers
Electronics Test
The purpose of this test is to verify the operation of the FIBIS Column
address and the shuffler.
THIS TEST HAS BEEN FOUND TO BE VERY UNSTABLE DUE TO
SOME INTERACTIONS BETWEEN SOME OF THE COMPONENTS
OF THE ELECTRONICS MODULE. IT IS SOMETIMES IMPOSSIBLE
TO EXIT THIS TEST WITHOUT SWITCHING OFF THE PRINTER.
Perform the Electronics test as follows:
1 In service mode 1, press Electronics Test (Media Source and Reprint
Keys).
2 The test will start and all the LEDs will turn OFF. There will be no
movement in the Printer and you must wait for the FrontĆPanel to
indicate if the test has passed or failed.
3 If the test passes, the Sheet LED (LED O) will light up.
4 If the test fails, the Sheet LED (LED O) will start to flash.
5 The test continuously repeats itself until you press the Cancel and
Media Source keys.
If the bail fails the test, try replacing the following component:
1 Electronics Module ' page 8Ć13.