HP 450c Service Manual - Page 58

To Exit This Test Without Switching Off The Printer.

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Electrical Test This tests the operation of some of the electrical components of the electronics module. 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 Electrical test as follows: 1 In service mode 2, press Electrical Test (Form Feed Key). 2 The test will start and the Printer will check some of the electrical parts. 3 If the test fails, an error code will appear on the frontĆpanel. Refer to Chapter 2 in order to correctly troubleshoot the failure. 4-24 HP DesignJet 430, 450C and 455CA Printers Service Tests

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4-24
Service Tests
HP DesignJet 430, 450C and 455CA Printers
Electrical Test
This tests the operation of some of the electrical components of the
electronics module.
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 Electrical test as follows:
1
In service mode
2
, press
Electrical Test
(Form Feed Key).
2
The test will start and the Printer will check some of the electrical parts.
3
If the test fails, an error code will appear on the frontĆpanel. Refer to
Chapter 2 in order to correctly troubleshoot the failure.