Hp 220 Uživatelský manuál stáhnout pdf (Strana 150)

8Ć2 Troubleshooting

C3187Ć90000

Power On

The plotters automatically perform a series of internal self tests and mechanical initialization

sequences whenever the user switches the plotter on. These are completed after about 30

seconds. If a failure occurs, an error is indicated on the frontĆpanel LEDs. You can perform a

failure analysis by interpreting the LED error code. (Details  later in this chapter.)

PowerĆOn Self Test

The powerĆon self test does the following:

1 Initializes the servo processor.

2 Initializes the main processor .

3 Tests communication between the main processor and the servo processor.

4 Tests the ROM checksum.

5 Causes the main processor to initialize certain firmware modules and communicate with

the carriage processor.

6 Tests the EEROM checksum.

7 Tests the servoĆprocessor transfer buffer and interruptĆtracking abilities.

8 Tests the communication between the processors again.

9 Tests the carriage ASIC.

10 Begins mechanical initialization of the plotter.

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Hp 220 Uživatelský manuál Strana 150