Identifying Faults; Flowchart 1: Getting Started - Mitel SX-200 EL Technician's Handbook

Identifying Faults

Flowchart 1: Getting Started

Flowchart 1:
all system LEDs on
the Control Cabinet
Is the maintenance
terminal operating?
(Ensure that maintenance
terminal is connected to
the maintenance port on
the Control Cabinet)
Is the operating system intact? Check the Main
Control Card's "active" LED.
No
YES: slow, steady flashing (1 second flash rate).
NO: any other state (e.g., on steady, off steady).
Start
Are
Yes
out?
No
No
A
Troubleshooting and Repair
Power subsystem is faulty.
Check Power Subsystem in the
Control Cabinet.
Check connection between AC mains
and rear of cabinet.
Check connection between PDU and
backplane.
Replace Power Supply
Swap Control Cabinet.
Yes
Yes
Flowchart 5:
Maintenance terminal
troubleshooting
B
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