• Optima MR450w BASE 1.5T System Service Methods
  • 5690012-2EN Revision 3
  • Object ID: 00000018WIA30EDE030GYZ
  • Topic ID: id_12373663 Version: 1.12
  • Date: Jan 8, 2020 1:32:25 PM

KASC Fan Replacement

Prerequisites

Table 1. Personnel requirements
Required personsPreliminary requirementsProcedureFinalization
1Not Applicable30 minutesFor DV: 15 mins. For Voyager and Pioneer: 60 mins.
Table 2. Tools and test equipment
ItemQuantityEffectivityPart numberManufacturer
Standard Tool1---
Table 3. Replacement parts
ItemQuantityEffectivityPart numberManufacturer
KASC Fan1-

Refer to FRU Manual.

-
Table 4. Safety

Procedure

  1. From the Common Service Desktop, turn off the ICN(s) (see ICN On/Off Procedure).
  2. Perform LOTO on the reconstruction equipment. See the MR Service Safety Manual, PN 5452735.
  3. Open PGR cabinet.
  4. Disconnect all connectors and cables from KASC, except for any SMB terminators on the detector boards. Leave the terminators in place.
    Figure 1.
  5. Remove 18 screws and remove the KASC fan assembly.
    Figure 2. KASC Fan Assembly
  6. Install the new module by reverse order of removal.

Finalization

  1. Remove LOTO from the reconstruction equipment. See the MR Service Safety Manual, PN 5452735.
  2. Turn the ICNs on per the ICN On/Off Procedure.
    Note:

    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 flashing.

  3. Perform a TPS reset, and then do a check scan to make sure the system operates correctly.