Emerson Rosemount CT5800, Manual

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5. Disconnect the laser module ribbon cables (P) 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.
6. Disconnect the 12 V power input wiring harness (O) from connector J16 (M).
7. Disconnect the 12 V power output wiring harness (N) from connector J17 (L).
8. Disconnect the peripheral PCB ribbon cable (K) from connector J7 (J).
9. Disconnect the Ethernet cable (S) from the Ethernet connector (T).
10. Disconnect the HMI display wiring harness (Q) from connector J22 (R).
11. Remove the SD card and retain for future use.
12. Remove and retain the six screws, spring washers, and flat washers (D, C, and A).
13. Remove the motherboard.
14. 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.
15. Inspect the replacement motherboard for signs of damage or delamination.
16. Place the motherboard in position on the backplate and secure it by fitting the six
screws (D) and the associated spring washers (C) and flat washers (A) retained
during the removal procedure. Torque tighten the screws to 0.6 Nm.
17. Insert the SD card removed from the old motherboard.
18. Connect the HMI display wiring harness (Q) to connector J22 (R).
19. Connect the Ethernet cable (S) to the Ethernet connector (T).
20. Connect the peripheral PCB ribbon cable (K) to connector J7 (J).
21. Connect the 12 V power output wiring harness (N) to connector J17 (L).
22. Connect the 12 V power input wiring harness (O) to connector J16 (M).
23. Connect the laser module ribbon cables (P) 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.
24. Connect the TRIGGER OUT wiring harness (L) to connector J32 (K).
25. Connect the detector module 1 TRIGGER OUT wiring harness (I) to connector J31
(G)
26. If applicable, connect the detector module 2 TRIGGER OUT wiring harness (H) to
connector J31 (F).
27. Connect the TEC board ribbon cable (E) to connector J12 (B).
28. Close the enclosure as described in
Closing the enclosure and secure with the
captive M16 bolts and engage the threads on the rear housing.
29. Remove Lock-Out Tag-Out labels.
Troubleshooting and diagnostics Reference Manual
September 2019 00809-0100-5800
130 Emerson.com/Rosemount