Emerson Rosemount CT5400, Installation, Operation And Maintenance Manual

Page: 111 / 176

5. Disconnect the wiring harness (I) from the TEC Board (C). A wiring harness to the
USB port (J) obstructs the removal of the TEC Board. Disconnect the wiring harness
(J) from the motherboard (K).
6. Remove and retain the four screws (G) and associated spring washers (F), flat
washers (E), and spacers (D) that secure the TEC Board to the mounting plate (A).
7. Remove the TEC Board (C) from the PCB Mounting Plate (A).
8. Discard the unserviceable TEC board 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 USB PCB
electronics.
9. Examine the replacement TEC Board for damage or delamination. If damaged,
contact your local Customer Care representative.
10. Fit the TEC Board (C) in position on the PCB Mounting Plate (A). Secure the TEC
Board by fitting the four screws (G) and associated spring washers (F), flat washers
(E), and spacers (D) that were retained during the removal procedure. Torque
tighten the screws to 0.5 Nm.
11. Connect the USB wiring harness (J) to the motherboard (K).
12. Connect the wiring harness (I) to the TEC board (C).
13. Connect the ribbon cable (H) to the ribbon cable connector (B) on the TEC board.
Make sure that the ribbon cable securely clicks into place in the ribbon cable
connector.
14. Remove Lock-Out Tag-Out labels.
DANGER!
ELECTRIC SHOCK
The analyzer operates using mains voltage that is dangerous to life. Make sure that the
power
ON/OFF switch at the rear of the panel is set to OFF and tagged off before
removing the top cover.
The analyzer must be earthed.
Death or personal injury may result if this is not observed.
15. Apply power to restart the analyzer.
Troubleshooting and diagnostics
Installation, Operations, and Maintenance Manual 91