Technical data

10 MD400 Scanner Pocket Service Guide
3.5 Service Features
• Indicators: Red and Green on the scanner
front panel. Green on ADF. Each indicator can
show three conditions: on, off, blink.
• DIP switches: Located on the rear panel (refer
to IS50 User Manual).
• Built-in tests:
• Self-tests
• Unit diagnostics.
3.6 Self-Tests
The Self-Test is invoked at power-on. A lamp test
is performed during the time that the self-tests
are running; the indicators are switched on for
approximately 4 seconds.
If the lamp test fails, check the electrical supply
and follow the troubleshooting procedure in the
IS50 User Manual.
At completion of the self-tests or if an error is
detected during normal operation, the indicators
display the error as follows as shown in Table 6.
The indicator display are those at completion of
the self-tests or errors encountered during normal
operation.