ROV Heat Sink Replacement Procedures

Time required for this step: Approximately 5 Minutes

Tools required for this step:

• #1 Phillips Head Screw Driver

Parts involved in this step:

MAR-PCB6 ROV Heat Sink

Quantity	Part Number	Part Description
1	MAR-PCB6	Heat Sink ROV Bar (Pro 4)
1	MAR-PCB6-SPCR	Heat Sink ROV Bar Spacer (Pro 4)
1	BER170-ND	Heat Sink 36.83mm x 21.08mm x 0.14mm Thermal Pad
2	92010A114	Screw M3 x 0.5mm x 5mm Flat Head Phillips SS

Steps

1. Place the two small thick heat sink pads over the shorter component on the bottom of the ROV power board.

2. Place the small aluminum heat sink over the pads and taller component on the bottom of the ROV power board.

3. Orient the heat sink at the bottom of the ROV power board so that the curved surface of the heat sink faces away from the ROV power board and the end of the heat sink with the holes is toward the circular cut out in the ROV power board for the vertical thruster.

4. Align the screw holes in the ROV heat sink and ROV power board.

5. Replace the two 3 X 5 mm Phillips flat head screws and tighten the screws.

6. Make sure the thin heat sink pad is in place on the curved part of the heat sink.

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Tips

Some heat sink bars may have four screws instead of two.