Mitel Sx-2000 Llightware 32, Release 1.0 Technicians Handbook

Maintenance Commands
111
Maintenance
Commands 
DS1/CEPT Formatter I Card (MC263CA 
and MC264CA) Communications
Use the following VT100 terminal emulation settings and 
commands when communicating with a DS1/T1 Formatter I 
card (MC263CA) or CEPT Formatter I card (MC264CA).
Settings
Use the following VT100 terminal emulation settings:
Baud rate: 38,400 bps
Databits: 8
Parity: N
Stop bits: 1
No flow control.
Commands
Use the following commands:
sig cas
Sets the signaling to CAS (default T1).
sig dpnss
Sets...

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line len # (T1 only)
Sets the line length for T1 where “#” is replaced with the 
following: 1 = 0-133, 2 = 134-266, 3 = 267-399, 4 = 400-533, 
5 = 534-655. 
dis opt
Displays the DS1/CEPT options settings.
force dl
Deletes the datetag file and resets the card.
reset
Resets the card which enables changes in the parameter 
settings. 

113
Chapter 5
Troubleshooting and
Repair 

Technician’s Handbook
114 

Troubleshooting and Repair
115
Troubleshooting
Identifying Faults
The Bootstrap Sequence
Table 24:   System Bootstrap Sequence
Normal Numeric 
Display on Main 
Controller CardError Display on Main 
Controller Card SequenceNotes
Test code appears 
for each self testThe numeric display 
briefly flashes EE followed 
by the test code number. Main Controller 
self testThese tests are run out of the 
EPROM on the main controller 
card.
B0 - RSD access
B1 - disk access
(These codes are 
displayed briefly as...

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Flowchart 1: Getting Started
Ye s
No Flowchart 1:
Power subsystem is faulty.
Check the AC power source. Are
all system LEDs on 
the main control 
cabinet out?Start
Ye s
No
NoYe s
Is the operating system on the faulty plane intact? 
Check the faulty plane’s MC card numeric display:
NO: any other state (e.g., counting, alternating 
between two numbers, on steady or off steady).
YES: slow, steady flashing (1 second flash rate).
Maintenance terminal 
troubleshootingFlowchart 6:
A
B...

Troubleshooting and Repair
117
Troubleshooting
Flowchart 1: Continued
Is a minor, 
major or critical alarm 
LED on?
No Ye s
Is the 
system in the 
process of a normal 
boot?Ye s No
Wait until the system 
finishes booting. If a minor, 
major, or critical alarm is 
present, start this flowchart 
again.
Unsure?
Flowchart 2:
System is not booting up
An alarm is presentFlowchart 3:
Correcting set/dataset 
problems Flowchart 4:
Flowchart 5:
The system bootstrap 
sequence
AB 

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Flowchart 2: The System is Not Booting Up
Is the main 
controller card
numeric display 
flashing EE followed by 
an error code (2-digit 
number)?
Ye s
C
NoNo
Is the
main controller card 
numeric display 
continuously alternating 
codes B0 and B1?
Ye s
Mass storage system is faulty. 
Check for faulty connections to the 
hard disks.
Power off the plane and then power 
it on again.
Next, try loading the system 
software from RSD. If you can’t load 
the software from RSD, see...

Troubleshooting and Repair
119
Troubleshooting
Flowchart 2: Continued
C
No Are any of the 
peripheral control 
complex card numeric 
displays flashing EE 
followed by an error 
code?
Is a system 
alarm present?
Ye sNo
Flowchart 3:
An alarm is presentTroubleshooting 
complete.
Ye s
Check for bent pins on the peripheral 
switch controller card connector.
Check for a faulty Fiber Interface 
Module (FIM).
Ensure ACTIVITY FREEZE is on. 
Reload the peripheral switch controller 
card by using the LOAD...

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Flowchart 3: An Alarm is Present
Enter this command:
SHOW STATUS ALARMS
The terminal displays the alarm category.
Enter:
SHOW FAULTS 
The system displays the alarm category and 
identifies the faulty card or device.
Record the name and the physical location 
identifier (PLID) of the faulty card or device.
An alarm is present.Flowchart 3:
Replace the faulty card or device. See 
Replacing Circuit Cards on page 146 and 
Recovering from a Corrupted Hard Disk on 
page 140. See also,...