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MAINTENANCE & TROUBLESHOOTING

7. Maintenance & Troubleshooting

7.1. Maintenance

Daily, ensure that the Power LED’s are on for all of the modules and that there are no Alarm lights. Ensure that the yellow

‘COM’ LED near the rear RJ45 port is blinking.

Weekly, ensure that all module cooling fans are operational and unobstructed.

Monthly, vacuum all module cooling fans.

7.2. Troubleshooting

The following guide will help the operator to diagnose problems in active modules or chassis’. If none of the items in this

section are of help, please contact ATX for Technical Support.

7.2.1. Slow Flashing Red LED on Module Front

If any alarm LED on the front of the module is blinking at a rate of approximately 1 second ON, 1 second OFF, then this is

indicative of a slot addressing communications failure. RF and Optical functionality will likely still work, but the unit will have

no software monitoring or control during this time.

Try removing the module and replacing it. If this does not x the problem, then switch the module to a different slot in the

chassis. If the red LEDs return to normal operation, then the problem is in actual slot of the chassis and likely the connector

on the back rail is damaged. Contact ATX and report a defective chassis.

If this does not x the problem then contact ATX and report a defective module.

7.2.2. Chassis’YellowCOMLEDNotBlinking

It is normal for the round LED near the RJ45 port at the rear of the chassis to be solid ON or OFF during various states of

system boot-up. If the chassis has been powered up (solid green on the round “+24V” LED near the terminal block at the rear

of the chassis) for at least 2 minutes, then the yellow LED should be blinking to indicate the chassis software is running. If it

is not, a reboot is necessary.

If the chassis can be interrupted briey, then simply remove power to it by pulling all MPAC/MPDC modules out part-way.

If the chassis must remain live then try pressing the black RESET button near the RJ45 port. If this does not work, then the

communications module itself can be removed from the back of the chassis. Remove the two Phillips screws that hold the

module on, then pull it off and replace it. This will not interrupt the operation of the modules within the chassis.

If this still does not start the yellow LED blinking after boot-up, then a factory reset will be necessary. See Section 4.6.

7.2.3. No Response From Chassis Over Network

Typically, this is a ‘subnet’ issue. In order for any device to see another device on the same network, they must be on the

same subnet. Consult your IT department for details of your network, but typically the subnet refers to the rst three of

the four octets in an IP address. E.g. if the computers in your network are given IP addresses of 192.168.10.1 through

192.168.10.250, then the subnet is the 192.168.10 part.

MAXNET

II – MP3 Active / Passive Chassis – Installation & Operation Manual 7-1

CHAPTER 7: MAINTENANCE & TROUBLESHOOTINGCHAPTER 6: FTP SERVER FIRMWARE LOAD INSTRUCTIONS

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Meinberg NDT Spezifikationen Seite 29