Nortel North American DMS-100 Instruction Manual page 144

75
At the front of the frame
76
77
78
79
80
81
82
DMS-100 Family NA100 Trouble Locating and Clearing Procedures Volume 2 of 2 LET0015 and up
Trouble locating and clearing procedures (continued)
Replacing a 14-in. disk drive unit
If the RTS command
failed
Determine if an IOD alarm is present.
If an IOD alarm
is present
is not present
Use the screwdriver to replace the four screws that secure the DDU faceplate
to the frame. To locate the mounting screws, refer to to the diagram at the
beginning of these instructions.
Record the information that follows in your office records:
• The date that you replaced the DDU.
• The serial number of the DDU.
• The problems that prompted the DDU replacement.
Return the DDU that has faults to the correct office for repair.
Note: For additional information on the return of equipment, refer to the
card return procedure for the correct country in this document.
Go to step 82.
You cannot busy the controller card if files are open. If you busy the card while
files are open, a loss of billing data can result.
For additional help, contact the next level of support.
The procedure is complete.
Do
step 81
Do
step 81
step 76
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(end)