MC Pre-Amp Assy Replacement

Prerequisites

Table 4. Safety

danger

STRONG MAGNETIC FIELD!
FERROUS MATERIALS CAN BECOME DANGEROUS PROJECTILES IN THE PRESENCE OF THE MAGNETIC FIELD PRODUCED BY THE SIGNA MAGNET.
Do not Bring any ferromagnetic tools or equipment into the magnet room.

Notice Image

warning

ELECTROCUTION HAZARD!
DANGEROUS VOLTAGES ARE PRESENT AROUND THE MAGNET SUBSYSTEM WHEN ENERGIZED.
LOCK AND TAG OUT POWER TO THE magnet room BEFORE STARTING WORK.

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

Procedure

Remove LPCA Cover. Refer to LPCA Cover Removal.
Remove the cables from defective Pre-Amp.
Loosen a screw that fixes the fixture bar.
Slide and remove the fixture bar.

Figure 1. Remove Fixture Bar
Slide and remove the defective Pre-Amp.

Figure 2. Remove Pre-Amp
Restore the assy by the reverse order of the removal.

Finalization

Restore the Power. Refer to Lockout / Tagout for System Cabinet PDU Main Breaker.
Run MCR tool.
Run one head or body scan.