POST Failure

If the T1 Modem Bank does not pass POST, it will display an error message code on the seven-segment LED display and enter an infinite loop, waiting for the device to be reset. (Table 4 shows a list of the possible error message codes).

Table 4Error Message Codes

Code

Problem

Description

E0

Bad CPU

Writing all 1s/all 0s test to all registers failed to read back OK.

E1

Bad

The watchdog does not reset the board, even when it has not been hit for 1.2 seconds,

 

Watchdog

or it resets it even if it has been hit. This error also shows up if you power-cycle during

 

 

the tests, since it cannot tell the difference between you cycling power vs. the

 

 

watchdog triggering it when it should not.

E2

Bad ROM

Defective ROM checksum, or defective EEPROM (bad checksum or bad data).

E3

Bad RAM

RAM test failed.

E4

Bad timer

Timer test failed; timer cannot count, or will not interrupt, or will not stop interrupting.

E5

Bad Sync

The SCA sync failed. The loopback test failed, or it will not interrupt, or it will not

 

 

stop interrupting.

E6

Bad line card

The line card failed to initialize or respond.

E7

Bad modem

No modems cards were found.

E8

Bad Misc.

Miscellaneous error. Currently goes on only if nothing has been downloaded for 15

 

 

minutes and the board resets itself.

E9

Bad

Download error - out of error packets, or bad checksum of packet, or more T1 Modem

 

Download

Bank units were found than were configured.

EA

Bad NVRAM

EA indicates that the default configuration will be used because it did not pass the

 

configuration

checksum when reading the NVRAM.

 

 

Default configuration in E2 memory T1 Modem Bank. No valid config E2 , use a

 

 

default configuration of the default configuration of ground start (central office type

 

 

trunk), AMI, and D4 framing.

EN

Bad node

Error found on the node number. If the node number is out of range, or if a ping string

 

number

references a number that is out of range, an error will occur. For example, if a ping

 

 

string is configured to four nodes, and node five is referenced, an error would occur. In

 

 

the case of duplicate node numbers, the T1 Modem Bank farthest from the EPC/X host

 

 

adapter will display En instead of AC when the system is booted up.

If any of these error message codes is displayed, run the diagnostics program by following the instructions in “T1 Modem Bank Diagnostics” on page 56.

30

T1 Modem Bank

Page 40
Image 40
Digi 90031300 manual Post Failure, Error Message Codes