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Troubleshooting

HP Designjet 4000/4020 Printer Series Service Manual

Corrective Actions for Power-Up Problems

1 If the Printer's Power-Up process stops when the front panel is displaying the

number 17, this indicates that there is a problem with the file system on the

Printer's Hard Disk Drive, so the Printer is checking the whole file system and

making any necessary corrections. This problem can arise when there has

been a power cut while the Printer was switched On, or if there is a physical

problem with the Hard Disk Drive.

Checking the whole file system normally takes about half an hour (but could

take much longer). There is nothing that can be done to speed up the file

checking process. If you turn Off the Printer during the checking process, the

file system check will restart whenever you turn it On again.

If you experience this problem repeatedly when there has been no power

cut, then this could mean that the Hard Disk Drive is faulty. In this case,

replace the Hard Disk Drive

⇒ Page 8 -111 .

2 If the printer's start-up process stops when the front panel is displaying any

number between 1 to 30, then try the following:

 Switch the Power OFF from the back of the Printer and disconnect the

Power cord. Reconnect the power cord and power On the Printer.



If the Printer continues to stop during the power-up process, replace the

Hard Disk Drive ⇒ Page 8 -111 .

PRINT APPLICATION STARTING POINT

7 IO kernel mode initialization (basically).

6 Printer Application Infrastructure startup.

5Printer IO startup.

Front Panel application startup (but wait for engine launching,

i.e. Front Panel is not cleared yet).

3 Engine startup, start EE and Mechanical initialization.

2 HPGL/PS parsers startup.

All subsystems launched.

Wait for Front Panel application to clear the Front Panel and start

signaling the initialization sequence.

Step Initialization Process

HP 4000 User Manual

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