SIGNA MR355 / SIGNA MR360
Service Manual
5856356-3EN Revision 5.0
Basic Service Documentation. Copyright General Electric Company.
Object ID: 00000018WIA3078FF20GYZ
Topic ID: id_13106321 Version: 1.3
Date: Jul 5, 2019 11:18:59 PM

CSA

Prerequisites

Table 1. Personnel requirements
Required persons	Preliminary requirements	Procedure	Finalization
1	Not Applicable	45 minutes	90 minutes

Table 2. Tools and test equipment
Item	Quantity	Effectivity	Part number	Manufacturer
Standard Tool	1	-	-	-
Ladder	1	-	-	-
Fixed Site Lift Tool Kit	1	-	46-317266 All Generation	-

Table 3. Replacement parts
Item	Quantity	Effectivity	Part number	Manufacturer
CSA (Refer to Illustrated Parts)	1	-	-	-

Table 4. 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.

CAUTION

The weight of CSA is 36 kg.

CAUTION

Wait 5 minutes from power OFF before replacement.

Notice

The unit can be withdrawn with rail slider.

Table 5. Required conditions
Condition	Reference	Effectivity
System Power must be turned OFF. Refer to System Cabinet PDU Main Breaker LOTO Procedure.	-	-

About this task

Procedure

Remove L Upper Front Cover. Refer to SC Cover Removal.
Drain the coolant.　Refer to Draining Operation before replacing CSA, XFA, or XFD-PS..

Warning

Failure to properly drain unit of coolant will result in damage to unit due to freezing during transit.

Disconnect the IN and OUT quick couplers of CSA from the water manifold.

CAUTION

When installing the couplers, insert the coupler to water manifold until click sounds.

Connect the IN and OUT quick couplers of CSA, and tie the hose as illustration.

Disconnect the all connectors from front panel of CSA.
Set the Universal Lift Hoist onto SC top.　Refer to Hoist Setup.
Disconnect the two connectors of leak sensor assy.
Remove the cabinet leak sensor assy by loosening 6 screws.

Figure 3. Remove Leak Sensor Assy
On the front of the ICN, remove the three screws and remove ICN Noise Duct.

Figure 4. Remove ICN Noise Duct
Remove 4 screws which are tightening CSA front panel to the chassis.
Withdraw CSA from the chassis until it stops at stopper position of slider rail.

Figure 5. Withdraw CSA
Install the two hoist brackets to the chassis of CSA with 6 removed screws.　Do not tighten 6 screws of hoist brackets.
Install the hoist assembly to the hoist brackets of CSA, and tighten 6 screws of hoist brackets. Check that hoist bracket and hoist assembly are installed surely.

Figure 6. Attach Hoist Bracket
Loosen 8 screws which are tightening CSA chassis to tray.
LIFT CSA slightly with hoist. Check that tray and CSA separated completely.
Insert the tray into the chassis completely.

Figure 7. Hoist Operation
Notice

STAY OUTSIDE OF THE RED LINE AREA UNDER CSA WHEN REPLACING THE ASSEMBLY. KEEP AS FAR FROM SYSTEM CABINET AS POSSIBLE.
Use the hoist and slowly lower the CSA Chassis to the floor. Remove the two hoist brackets from CSA chassis.

Figure 8. Hoist Operation
Install CSA by the reverse order of the removal.

Note:
Make sure to connect all cables and hoses.

Note:
Make sure to close draining valves and open Supply and Return valves.
Restore System Cabinet.

Finalization

Restore the Power. Refer to System Cabinet PDU Main Breaker LOTO Procedure.
Refill Coolant. Refer to Refill Coolant after replacement of CSA, XFA, or XFD-PS.
Perform RF Output Power Check. Refer to Body and Head Maximum Power Setup and Calibration.
Perform UPM Functional Check. Refer to UPM- Body and Head Functional Check .
Perform Signal to Noise - Head Scan.