User's Manual

SRM9000X8 800MHz SERVICE MANUAL

1.6 C

HASSIS

SSEMBLY

Important Note!

1.6.1

Torque Settings

Assembly of 'Chassis' (Inner Extrusion) to 'Outer Extrusion': 1.4 Nm (PA x 2), 1.25Nm (Others x 3)

Assembly of 'Front' and 'Rear' end-caps to 'Outer Extrusion': 1.4 Nm.

1.6.2

Thermal Compound Application

Just enough thermal compound should be applied to the PA tray to provide good thermal contact with the chassis.

Note. If thermal compound is old and difficult to spread, it should be discarded.

1.6.3

Assembly

The Inner extrusion should initially be nested together with the PCB and then the assembly slid into place within

the outer extrusion.

Positioning the inner extrusion upwards by hand, it is then important to insert all screws by hand and ensure they

have been fully inserted through the PCB, thereby locating the assembly correctly.

Whilst holding the inner extrusion upwards to ensure the assembly does not twist, lightly torque up the centre

screw of the row of three followed by the PA module mounting screw towards the middle of the chassis.

The remaining screws can then be screwed up to full torque followed by re-torque of the first two screws.