Cisco Headend System Release 2.7 Maintenance Manual
Chapter 5 Troubleshooting
120
4024836 Rev D
Symptom
Possible Solution
DHCT stuck, displaying the
following constantly:
dIAG
1
Force a download by following these steps:
a
Unplug the DHCT power cord from the power
receptacle.
b
Plug the DHCT power cord into the power
receptacle while pressing the SELECT and
POWER buttons at the same time (on the
DHCT front panel).
2
If these steps do not work, return the DHCT to us
for repair. Mark the repair tag with D4. Unit Stuck
in dIAG.
DHCT stuck in brick mode
(SARA only), displaying the
following constantly:
– – – – (four dashes)
1
Follow these steps:
a
Confirm that the CableCARD module MAC
address matches the billing MAC address and
that the CableCARD module is authorized for
service.
b
Ask the DNCS operator to correct any
mis-match and send a hit to the CableCARD
module.
2
See PowerKEY/EA Issues (on page 131) for more
information.
3
If these steps do not work, return the DHCT to us
for repair. Mark the repair tag with one of the
following:
–
–
S2. Stays in Brick Mode (– – – –)
–
S1. No EMMs/ISE/EA
Front panel LED displays
for 1 second
before the DHCT reboots
The Cyclic Redundancy Check verification on the
Bootloader code failed. You might be able to stage
the DHCT, but the DHCT might not accept an OS
upgrade in the future.
Return the DHCT to us for repair. Mark the repair
tag with D7. Error Code (BRXX, ERXX, or XXXX).
Front panel LED displays
for 5 seconds
before the DHCT reboots
The test of the internal DRAM failed:
If the condition was a one-time occurrence, after
rebooting the DHCT, the DHCT boots correctly
into the OS and resident application.
If this problem continues, the DHCT reboots
continuously and display this message. Return the
DHCT to us for repair. Mark the repair tag with
D7. Error Code (BRXX, ERXX, or XXXX).
Card Status on CableCARD
Information diagnostic
screen shows Reset
1
Power cycle the DHCT.
2
Contact Cisco Services.