Installing Dynamic Disable Switch Board

Prerequisites

Table 1. Personnel requirements
Required persons	Preliminary requirements	Procedure	Finalization
1	Not Applicable	1 hours	Not Applicable

Table 2. Safety

DANGER

FATAL ELECTRIC SHOCK HAZARD!!

POSSIBLE +500 (1.0T) OR +1000 (1.5T) VOLT POTENTIAL TO THE DYNAMIC DISABLE SWITCH BOARD.

TO PREVENT POSSIBLE FATAL ELECTRIC SHOCK, DISCONNECT POWER FROM THE RF SYSTEM CONTROLLER MODULE.

Turn Driver Module Power off with MR1A14CB6.
Shut down power to the System cabinet by switching OFF the System cabinet breaker at the PDU.
Lock out Tag out front plate of PDU. (Refer to OSHA Lockout Tagout Requirements.)
Verify that power to the system Cabinet is off by checking the fans and LEDs on the MGD chassis and the Driver module.
Reinstall Dynamic Disable Switch (DDS) Board into Body Coil Assembly. Tighten screw hand tight.
Install cover over DDS Board.
Reassemble removed magnet enclosure pieces.
Reconnect J72, J73, J75 and J76 to the Penetration Panel (magnet enclosure side).
Remove lockout and tag from ACGD/PDU Cabinet.
Run TR Dynamic Disable Calibration.
Turn System cabinet Power on and Driver module.

Check SNR. Refer to procedure for Signal to Noise - Head Scan.