Technical data

MD400 Scanner Pocket Service Guide 13
1 = on
0 = off
run test 1
halt test 0
0
0
test 4 ADF operation test
test 1 power test
Unit Diagnostic
0
10
01
0
Unit Diagnostic mode 1
normal operating mode 0
12345678
Figure 2 DIP Switch Setting in Diagnostic Mode
Running the unit diagnostics is described in
Table 7.
Table 7 Diagnostics
Step Action Indicators
RED GREEN
1 Note the DIP
switch settings
used in normal
operation
2 Turn power switch
OFF
3 Set DIP switch
1 ON, to enable
diagnostic mode
4 Turn power switch
ON
BLINK ON
5 Set DIP switch 1
OFF
BLINK BLINK
6 Set DIP switch 1
ON
BLINK BLINK
7 Select the test
number, using DIP
switches 5 to 8
8 Run selected test
by setting DIP
switch 3 ON