Fujitsu Scan Partner 300C Instruction Manual page 90

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
The two LEDs blink alternately.
2 blinks
3 blinks
4 blinks
5 blinks
6 blinks
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.
Paper Jam LED
2 blinks
3 blinks
4 blinks
5 blinks
6 blinks
Table 5-2 Offline diagnostics results
5-2
Error indication
RAM error
ROM error
DC offset adjust failure (too dark)
DC offset adjust failure (too bright)
Group 2 error
Group 1 error (inverter check error)