Emerson Rosemount CT5400, Installation, Operation And Maintenance Manual

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5. On the motherboard, disconnect the TEC board ribbon cable (I) from connector J12
(E).
6. Disconnect the USB wiring harness (H) from the USB connector J21 (J).
7. Disconnect the TRIGGER OUT wiring harness (L) from connector J32 (K).
8. Disconnect the laser module ribbon cables (S) from the motherboard.
The number of laser module ribbon cables to be disconnected will vary depending
upon the application for which the analyzer has been configured.
9. Disconnect the 12 V power input wiring harness (Q) from connector J16 (P).
10. Disconnect the 12 V power output wiring harness (R) from connector J17 (O).
11. Disconnect the peripheral PCA ribbon cable (N) from connector J7 (M).
12. Disconnect the Ethernet cable (A) from the Ethernet connector (B).
13. Disconnect the HMI display wiring harness (U) from connector J22 (V).
14. Disconnect the serial port wiring harness (T) from connector J23 (C).
15. Remove and retain the six screws, spring washers, and flat washers (G, F and D).
16. Remove the motherboard.
17. Discard the unserviceable motherboard observing all local and federal laws
regarding disposal of electronics.
CAUTION!
ELECTROSTATIC DISCHARGE
Wear an ESD wrist strap or ground yourself to prevent damage to the motherboard
electronics.
18. Inspect the replacement motherboard for signs of damage or delamination.
19. Place the motherboard in position on the PCB mounting plate and secure it by fitting
the six screws (G) and the associated spring washers (F) and flat washers (D) retained
during the removal procedure. Torque tighten the screws to 0.6 Nm.
20. Connect the serial port wiring harness (T) to connector J23 (C) on the motherboard.
21. Connect the HMI display wiring harness (U) to connector J22 (V).
22. Connect the Ethernet cable (A) to the Ethernet connector (B).
23. Connect the peripheral PCA ribbon cable (N) to connector J7 (M).
24. Connect the 12 V power output wiring harness (R) to connector J17 (O).
25. Connect the 12 V power input wiring harness (Q) to connector J16 (P).
26. Connect the laser module ribbon cables (S) to the motherboard. Make sure that the
laser module ribbon cables are connected to the correct laser module connectors on
the motherboard, as tagged or noted down during the removal procedure.
27. Connect the TRIGGER OUT wiring harness (L) to connector J32 (K).
28. Connect the USB wiring harness (H) to the USB connector J21 (J).
29. Connect the TEC board ribbon cable (I) to connector J12 (E).
Troubleshooting and diagnostics
Installation, Operations, and Maintenance Manual 97