0108 - Major IMT Failure Detected

A major fault has been detected on one of the IMT buses. A major fault consists of three or more faults on the IMT bus.

Example

RLGHNCXA21W 00-02-07 11:02:30 EST  EAGLE 35.0.0
** 0100.0108 ** IMTBUS A      Major IMT failure detected
                Card 1101, 1102, 1107, 1108

Alarm Level: Major

Recovery

1. Enter the following command to check the status of the IMT:
   rept-stat-imt

   If the entire IMT is down, continue with 6.

2. Visually check the IMTLEDS on the front of the cards.
   A red LED or LEDs denotes an IMT fault. If the top LED of the pair is red, there is a fault on IMT A. If the bottom LED is red, there is a fault on IMT B. See Figure 3-3.

   Figure 3-3 Card LEDs

   
3. Note the card location or locations for cards with a red LED(s).
4. Using the card location(s) noted in 3 enter the following command to connect the card(s) back to the IMT:
   conn-imt : loc =x : bus = y

   where x is the card location stenciled on the shelf of the system, and y is the IMT bus to be returned to service.

   The following message appears using card location 1106 and IMT bus A:

   RLGHNCXA03W 00-02-07 11:02:30 EST  EAGLE 35.0.0
       Connect IMT Bus A command issued to card 1106

5. If the connection command is successful, the Card connected message appears.

   RLGHNCXA03W 00-02-07 11:02:30 EST  EAGLE 35.0.0
       0100.0006    IMT   BUS A         Card connected to IMT

6. If the fault does not clear, enter the following command:
   inh-imt:bus=x

   where x = faulty IMT bus.

   warning:

   This command removes the faulty IMT bus from service, causing all cards to disconnect from the designated bus. 8 must be completed once 6 is performed. If the technician has any questions about using this command, contact My Oracle Support (MOS).
7. Enter the following command to test the IMT bus:
   tst-imt:bus=x

   where x = the inhibited IMT bus.

   An example of the output follows:

   RLGHNCXA03W 97-09-27 12:47:07 EST EAGLE 35.0.0
   IMT Fault Isolation Bus B
   Fault Location    Probable Cause  Failure(s)
   Card  1201        Card 1201
                                     Pass-through Test Failed
   Card  1301        Card 1301
                                     Pass-through Test Failed

   Note:

   When tst-imt completes, either through normal termination of the command or because the command is aborted, 8 MUST be completed.
8. Enter the following command to change the state of inhibited IMT to IS-ANR:
   alw-imt:bus=x

   where x = the inhibited IMT bus.

9. Reseat the affected card(s).
   Probable causes are listed in order of most probable to least probable. The listed components should be reseated in order listed by the output of the tst-imt command.

   warning:

   Reseating or replacing a LIM will cause both links on the card to fail. If the card is a LIM, place the links on the LIM out of service by entering the dact-slk command.
10. If the fault does not clear, replace the affected card(s).
    Probable causes are listed in order of most probable to least probable. The listed components should be replaced in order listed by the output of the tst-imt command.
11. If the fault does not clear, replace the IPMX card servicing the affected card(s).

    Caution:

    Replacing an IPMX card causes the IMT to go down. (IPMX in Slot 09 affects IMT A and IPMX in Slot 10 affects IMTB.)
12. If the fault has cleared and any of these cards are LIMs, place the links assigned to these cards back into service using the act-slk command.
13. If these steps do not clear the fault, contact My Oracle Support (MOS).
    Refer to the Maintenance Manual for card removal/replacement procedures.