Fairbanks FB2550 SERIES - Manual (Page 151)

Section 8: Service & Maintenance
07/2012 151 51254 Rev. 3
8.2. TROUBLESHOOTING – LOOPBACK TEST FOR SERIAL PORTS
The FB2550 has a built-in serial port test feature.
– A test cable is needed to use this feature
– The Loop Back Test troubleshoots faulty COM Ports.
1. Select LOGIN .
2. Enter the Supervisor Password or
Service Password.
3. Press PAGE FORWARD once.
4. Select LOOPBACK TEST .
5. Select the two COM PORTS that
needs to be tested.
6. Install the TEST CABLE
connecting the two selected COM
ports.
7. Press the CONTINUE button to
begin the loopback test.
The Loopback Test is complete.
8. Press the CONTINUE button to
return to the Configuration Menu.
9. Press RETURN TO WEIGHING
to exit to the Weight Screen.
Table 13.5.1. - Test Cable Wiring
P1 – DB-9F Description Description P2 – DB-9F
2 Rx Tx 3
3 Tx Rx 2
5 Gnd Gnd 5