Technical data

14 MD400 Scanner Pocket Service Guide
Table 7 (Cont.) Diagnostics
Step Action Indicators
RED GREEN
9 To interpret error,
check the status
of the indicators
shown in Table 8
10 Set DIP switch
3 off to halt the
selected test
11 Wait for current
test to terminate
ON BLINK
12 To run another
Unit test, go back
to step (7)
13 When Unit
Diagnostics
testing is complete,
switch off power
and RESET
DIP switches to
original positions
for normal
operation. After
repairing the
MD400 system,
perform the
Post-Installation
Checks