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Fault analysis 63
Model 2616RC T-DAC User Manual 5 • Troubleshooting and maintenance
SYSTEM Front
panel
Green Flash-
ing
The Model 2616RC is operating normally. No action rec-
ommended.
Off The Model 2616RC is not functioning properly. As soon
as possible, unplug both power cables from the Model
2616RC, wait 30 seconds, then plug the cables back
into the Mode 2616RC to see if the problem disappears.
If the SYSTEM LED remains lit after the Model 2616RC
completes the power-up cycle, contact Patton Technical
Support to determine whether the T-DAC needs to be
replaced.
ETHERNET Front
panel
Green
On solid
Link status is nominal for the Ethernet port. No action recom-
mended.
Off
• A valid link has not been detected.
• Verify that an Ethernet cable is plugged into the hub, switch,
or workstation and the Ethernet port of the Model 2616RC.
• Verify that the hub, switch, or workstation is powered on.
• Verify that the correct straight-through or cross-over cable is
being used, depending on whether you are connecting to a
workstation (PC), hub, or switch.
• Replace the cable. If the problem still exists, contact Patton Tech-
nical Support to determine if the T-DAC should be replaced.
CLK SOURCE Front
panel
Green
On solid The 2616RC is set as the Master Clock source. No action rec-
ommended.
Flashing The 2616RC is set as the secondary clock source. No action
recommended.
Off The 2616RC is set as the slave, getting its clock from the H.110
Bus. No action recommended.
CLK ERROR
Front panel Yellow On solid Master Clock source has been lost and the 2616RC is using the
secondary source for its clock.
Flashing Master Clock source and the Secondary Clock source have been
lost and the 2616RC is using its internal crystal for its clock.
Off No clock errors currently detected.
No action recommended.
TEST MODE Front panel Green On solid One or more T1/E1 ports or T1/E1 ports is in test mode.
No action recommended.
Flashing One or more of the T1/E1 ports or the T1/E1 ports is in test
mode and errors have been received.
Off None of the T1/E1 ports is operating in test mode.
No action recommended.
T1/E1
CONNECTIONS
(LEDs 1–16)
Front Panel Green On solid The ports are activated, linked, and operating normally.
Flashing One or more T1/E1 ports have errors.
Off No T1/E1 ports have been configured to establish a link.
See Chapter 3, “Configuring the T-DAC for operation” on
page 31 to configure the T1/E1 ports.
Table 7. LED definitions (Continued)
LED Location Color Status Meaning