Digi SM-720 - SIO Loop Back Test

SM720 Service Manual Edition 5
39
5.2.1.2 SIO Loop Back Test
Connect RS232 Loop Back jig to scale.
Procedure Picture
1) In [Operation Menu] mode, press and hold [Rezero] and press
[0] [8] [9] [3] to go to [Maintenance Screen].
2) Touch [Self Diagnostic] to go to self diagnostic mode.
3) Touch [RS232].
4) Ensure the testing result is successful.
5
4
TEST JIG CONNECTOR for SIO Port
Connect pin 4 and pin 5
Test Ok
Test Fail