SIGNA™ Hero 3.0T Service Methods
5852800-8EN Revision 1.0
Object ID: 00000018WIA309BC230GYZ
Topic ID: id_15667406 Version: 1.11
Date: Jul 13, 2021 4:27:36 PM

SSSA Replacement

Prerequisites

Table 1. Personnel requirements
Required persons	Preliminary requirements	Procedure	Finalization
1	Not Applicable	90 minutes	30 minutes

Table 2. Tools and test equipment
Item	Quantity	Effectivity	Part number	Manufacturer
Standard Tool	1	-	-	-
Ladder	1	-	-	-
Hoist Service Kit	1	-	5196226	-

Table 3. Replacement parts
Item	Quantity	Effectivity	Part number	Manufacturer
SSSA	1	-	Refer to FRU Manual	-

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.

Warning

Laser Radiation Hazard!

Invisible laser radiation can be emitted from disconnected fiber-optic cables or connectors.

Do not stare into the beam, point the cable or connector ends at your eyes, or view through optical instruments.

CAUTION

The weight of SSSA is 46.8 kg.

CAUTION

Wait 5 minutes from power OFF before replacement.

Notice

The unit can be withdrawn with rail slider.

Notice

Electrostatic discharge (ESD) can cause permanent damage to electronic components.

Observe the following ESD precautions:

Wear a static wrist strap to ensure that any accumulated electrostatic charge is discharged from your body to the ground.

Create a common ground for the equipment being worked on by connecting the static-free mat, static wrist strap, and peripheral units to that piece of equipment.

Notice

The SFP optical transceiver is very sensitive to ESD. SFP latent failures can occur, in dry climates or low relative humidity, surpassing their ESD protection.

Contaminant failures can occur in SFP optics and exposed glass Rx and Tx cable ends. Do not touch the exposed ends on fiber connectors. Leave the dust caps in place until you are ready to install the SFP module. Use the Fiber Optics Cleaning Kit to clean both the SFP and cable end every time they are replaced or swapped from one port to another, or when using a loopback.

When working with the SFP optical transceiver or SFP Loopback, also observe the following precautions:

Always use ESD protection when handling the SFP optical transceiver to prevent early failure.

Always keep a protective cap on unplugged fiber connections.

The SFP must be shipped in antistatic packaging. Discard any SFP shipped or stored without proper ESD protection.

For more information on handling and cleaning the SFP transceiver refer to Fiber Optic Cable Devices Installation and Replacement.

Table 5. Required conditions
Condition	Reference	Effectivity
System Power must be turned OFF. Refer to Lockout / Tagout for ISC.	-	-

Procedure

Confirm that there is no input voltage at the terminal of SSSPS using DVM.

Figure 1. Voltage Check
Remove left front cover per following steps.
1. Open left front cover and remove a screw to disconnect GND cable.
2. Unlock the cover.
3. Lift up and remove the cover.
Figure 2. Cover removal

Note: If the service area is narrow, do the same for right front cover.
Perform the following steps.
1. Disconnect two connectors.
2. Remove six screws.
3. Remove Leak sensor assy.
Figure 3. Remove Leak Sensor
Drain the coolant.　Refer to Draining Operation before replacing RF Amp, SSSA, or SSSPS.

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 corresponding SSSA from the water manifold.


a	RF Amp
b	SSSA (X)
c	SSSPS
d	SSSA (Y)
e	SSSA (Z)

CAUTION

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

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

Set the Universal Lift Hoist onto SC top.　Refer to Hoist Setup.
Disconnect cables and Loosen 4 screws from SSSA.
1. Disconnect the all connectors and terminals from front panel of SSSA.
2. Loosen 4 screws tightening SSSA front panel to the chassis.
3. Withdraw SSSA from the chassis.
Figure 6. SSSA Front
Install the hoist brackets to the chassis of SSSA with 6 screws.

Note: Hoist Bracket is stored in FRU box.

Figure 7. Hoist Brackets Installation
Perform the following steps.
1. Hook the winch and spreader bar from the hoist kit to the lifting bracket named “SSSA WITH FILTER”
2. Ratchet the winch to tighten the chain.
3. Press the release tabs in on each side and remove the 2nd slide rail from 1st slide rail.
Figure 8. Hoist Operation
Notice

Stay outside of the red line area under SSSA when replacing the assembly. Keep as far from system cabinet as possible.
Push the rail slider into the system cabinet before lowering SSSA.
Use the hoist and slowly lower the SSSA Chassis to the floor.

Note: When lowering the SSSA Chassis, it may be easier to rotate SSSA 90 degree as following illustration.
Remove the two hoist brackets from SSSA chassis.
Install SSSA by the reverse order of the removal.

Note: Make sure to connect all cables and hoses.
Restore ISC.

Finalization

Notice

The RF Amp may be damaged if power is on without coolant inside. To avoid this situation, set the RF Amp Breaker to OFF Position before power ON for new FRU.
Set the RF Amp Breaker to OFF Position.
Figure 9. RF Amp Breaker OFF
Restore the System power. Refer to Removing LOTO - ISC.
Wait till pressure meter (black meter) of CCU moves for about 40 seconds.
Figure 10. Pressure meter
Turn the RF Amp Breaker ON
Figure 11. RF Amp Breaker ON
Refill Coolant. Refer to Refill Coolant .
To adjust DC Offsets, refer to DC Offset Adjustment.
Perform [TPS Reset].
Perform DQA Tool.