Resetting The System; To Perform A Cold Start; To Perform A Hot Start - NEC UX5000 Hardware Manual

Chapter 2 - PCB Installation and Startup

Resetting the System:

2.9.9
While the system is powered up, data may be written to the S-RAM or flash memory at any time. If the UX5000
requires a system reset, you must power off the system using the power switch on the front of the Base KSU.
This procedure will allow the system to wait until any data-writing process is completed, avoiding the
possibility of corrupting the data. If the system unexpectedly loses power while flash memory data is being
written, it could become corrupt and the system may not come up. If the S-RAM data is corrupted, the
telephones may have erratic operation.

To Perform a Cold Start:

2.9.10
●
System software loaded from flash memory and the customer data is erased from RAM memory.
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To avoid extension and trunk renumbering if certain PCBs are recognized first, set the PCB Block option
using Program 90-05-01, Menu 3 for each of the PCBs until the system has reset. Then, unblock the
PCBs using Program 90-05-01, Menu 4 in the correct order to retain the proper system numbering (Use
Programs 10-03 or 90-13-03 prior to performing a cold start to record the current slot definitions.).
1. Without a USB Flash drive installed in the CCPU, turn the system power off by first powering down any
expansion KSUs, then powering down the Controlling KSU-B.
2. Once the system has powered down, push in and hold the Load/SW1 button.
3. Press the power button to power the system back up.
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With a multi-KSU system, turn on the expansion KSU's power supply, then the controlling KSU
(KSU-B or KSU-A) power supply.
4. Continue holding the Load/SW1 button for approximately 10 seconds.
5. Release the Load/SW1 button.
6. When the system has completed reloading the software (approximately 2 minutes), the Status LED will
be flashing on the CCPU.

To Perform a Hot Start:

2.9.11
●
System software loaded from flash memory and the customer data is loaded from RAM memory.
1. Turn the system power off by first powering down any expansion KSUs, then powering down the
Controlling KSU-B.
Once it has powered down, press the button again (first on the expansion KSUs then on the controlling
KSU) to power the system back up. Wait approximately 2 minutes.
2. When the system has completed reloading the software, the Status LED will be flashing on the CCPU.
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! IMPORTANT !
Chapter 2