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 the signaling to DPNSS (default CEPT).
+dchan-inv (T1 only)
Sets D-channel inversion to ON (default). 
-dchan-inv (T1 only)
Sets D-channel inversion to OFF.  
						

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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. 
						

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Chapter 5
Troubleshooting and
Repair 
						

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							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 
the system accesses 
the RSD drive, and 
the disk drives.)Any Bx codes other than 
B0 or B1 indicate errors.
OR
If B1 and/or B0 are 
displayed for several 
minutes, an error 
condition exists. Get MCINIT 
from disk or 
RSDIt takes the main controller only a 
few seconds to obtain the 
MCINIT test from the RSD or 
hard disk. It begins doing the 
tests as soon as it gets them.
Check that the LEDs on the hard 
drives and RSD drive are 
flashing. If the LEDs are not 
flashing at this stage, the mass 
storage subsystem is faulty.
Test code appears 
for each testThe numeric display 
briefly flashes EE followed 
by an error code.Test MCINT 
control sectionTest results are displayed on the 
maintenance terminal screen. 
The main controller sends these 
results to the maintenance 
terminal at 9600 baud, 8N1.
Fast count Same as above. Load operating 
softwareThe main controller is 
transferring its operating system 
from hard disk to RAM.
Sporadic Same as above. Initialize 
operating 
system (OSInit)The main controller sends these 
results to the maintenance 
terminal at 9600 baud, 8N1.
Slow steady flashing Same as above. Normal 
operation on 
main controllerThe main controller begins 
communicating with the 
maintenance terminal at the last 
saved baud rate. The desktop 
display appears, allowing you to 
start a session. The flashing 
numbers on the processor 
indicate the number of messages 
passing between it and the other 
processors on the system.
Fast count on 
subsystem 
processor. High 
message numbers 
flashing on main 
processor.Same as above. Loading 
subsystem 
processorsThe main controller transfers the 
subsystem processor software 
loads from the hard disk to the 
subsystem processors 
(Peripheral Switch Controller 
cards, DSU cards, DNI line 
cards, and attendant consoles). 
						

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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
Is the 
maintenance terminal 
operating? (Ensure 
maintenance terminal is 
connected to the faulty 
plane). 
						

							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 
Removing and Replacing a Faulty 
Hard Disk on page 143.
Flowchart 2: System is not 
booting up
Reload the software (hold down the 
PANEL ENABLE button and press 
the RESET button of the affected 
plane). If the problem persists, 
replace the main controller card. 
See Replacing a Main Controller 
Card on page 147.
On redundant systems, set 
ACTIVITY FREEZE to “on”. 
						

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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 
CONTROLLERS command. If the fault 
persists, reload the software into the 
main controller card. If the fault persists, 
replace the peripheral switch controller 
card. See Replacing a Peripheral 
Switch Controller (PSC) Card on page 
148. 
						

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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, the SX-2000 Install 
Upgrades and FRUs (Field Replaceable 
Units) section of the Technical Documentation 
CD-ROM.
Enter:
STATE  of the faulty card or device.
Enter:
TEST  of the faulty card or device.