5.2 Offline diagnostics

To run the offline diagnostics, turn the scanner off, set the SCSI ID switch (located on the back, next to the SCSI connector) to 8, and turn the power back on. When you first turn the scanner back on, the READY light will blink, indicating that the diagnostics are in progress. Observe the front panel LEDs closely. In a short time, the LEDs indicate the results of the offline diagnostics as explained in the table below.

Ready LED

Paper Jam LED

Error indication

 

 

 

The two LEDs blink alternately.

RAM error

2 blinks

2 blinks

ROM error

 

 

 

3 blinks

3 blinks

DC offset adjust failure (too dark)

4 blinks

4 blinks

DC offset adjust failure (too bright)

 

 

 

5 blinks

5 blinks

Group 2 error

6 blinks

6 blinks

Group 1 error (inverter check error)

 

 

 

Table 5-2 Offline diagnostics results

For RAM or ROM errors, refer to Main Control PCBA Replacement in Chapter 4. For the Group 2 error, see the flowchart in the following section.

To return the scanner to online operation, turn off the scanner, reset the SCSI ID to its pretest setting, and turn the scanner back on.

5-2

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Fujitsu 600C manual Offline diagnostics results