46 GE INFORMATION G500 SUBSTATION GATEWAY INSTRUCTION MANUAL
CHAPTER 4: INTERFACES
Service of serial
(UART) modules
The information described in this section is for service technicians only!
The built-in Serial (UART) modules are field replaceable. It is not allowed to increase or
decrease number of Serial (UART) ports by this method.
1. Power down system gracefully.
2. Disconnect all hazardous live circuits and sources of electrical power.
3. Remove both power supplies.
4. Remove screws and push lid to the rear until markings on lid and chassis align.
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