Replace the KASC terminator in the Integrated System Cabinet (ISC).
Prerequisites
Table 1. Personnel requirements
Required persons
Preliminary requirements
Procedure
Finalization
1
Not Applicable
30 minutes
Not Applicable
Table 2. Replacement parts
Item
Quantity
Effectivity
Part number
Manufacturer
KASC Terminator
1
-
Refer to FRU Manual
-
Table 3. Safety
Warning
ELECTROCUTION HAZARD!
DANGEROUS AND/OR FATAL VOLTAGES ARE PRESENT IN THE ENERGIZED CABINET.
Follow loto steps as given in first section of this document to disable and verify safe voltage levels.
Procedure
Notice
Never turn an ICN ON/OFF from the power button on the front. The ICNs have software running on disk drives that can be corrupted if not shut down properly. Follow the procedure referenced below for removing power to the ICN chassis. Failure to properly power down an ICN can result in premature ICN failure.
From the Common Service Desktop, turn off the ICN(s) (see
ICN On/Off Procedure
).
Perform LOTO on the reconstruction equipment. See the
MR Service Safety Manual,
PN 5452735.
Open the PGR covers.
Pull the terminator out of the front panel of the KASC.
Figure 1. Terminator
Note:
Measure resistance of the new terminator and make sure it is approximately 50 ohms.
Push in the new terminator.
Finalization
Remove LOTO from the reconstruction equipment. See the
MR Service Safety Manual,
PN 5452735.
For the first 3 or 4 minutes, LEDs come on only at the rear of the ICN, next to the power cables. After 3 to 4 minutes, you will hear the ICN fans come on and then the LED at the front of the ICN starts to flash.
Run UPM diagnostics to ensure proper functionality.
Perform a TPS reset, and then do a check scan to make sure the system operates correctly.
