Motorola DR 3000 service manual Reassembly of Power Supply, Reassembly of Receive Radio

Disassembly/Reassembly Procedures: Transmit and Receive Radio Reassembly — Detailed 5-21

5.8.3Reassembly of Receive Radio, Power Supply and Connector Board Assembly

(Refer to Figure 5-6)

Visually inspect repeater enclosure to ensure that no metal shavings or debris are found.

5.8.3.1Reassembly of Power Supply

1.Align the two mounting holes on each side of the bracket with the mounting holes on the power supply.

2.Secure the power supply and the bracket with four M5 screws and washers.

3.Tighten the four M5 screws to 3.0 N-m.

4.Firmly connect the single connection end of Y-split cable to power cable of power supply.

5.8.3.2Reassembly of Receive Radio

1.Insert the Receive radio into the top half of the bracket.

2.Align mounting hole on each side of the receive chassis to the mounting holes on the bracket.

3.Secure the Receive radio and the bracket with two M5 screws and washers.

4.Tighten the two M5 screws to 3.0 N-m.

5.8.3.3Reassembly of Connector Board Assembly

1.Align the five mounting holes on the connector board assembly onto the five standoffs on the receive bracket and install five M3 screws.

2.Tighten the five M3 screws to 1.0 N-m.

5.8.3.4Reassembly of the Receive Bracket Assembly to the Enclosure

1.Align and mount the receive bracket assembly onto the five stud screws in the enclosure.

2.Ensure that the dimple locator (bump) on the enclosure is nested within the hole on the receive bracket before installing and tightening the lock nuts.

3.Tighten the five lock nuts to 2.0 N-m.

NOTE: The two lock nuts at the side on base will require a magnetic lock nut driver with extension of greater than 150 mm).

4.Connect the antenna cable to the Receive radio.

5.Insert the BNC connector of the antenna cable through the back panel of the enclosure and secure it using a lock washer and nut.

6.Tighten the nut to 0.7 N-m using a 16 mm deep well socket driver.

7.Firmly connect one of the connectors from the dual end of Y-split cable to the Receive radio.

NOTE: All cables (except the antenna cable), are routed at the bottom rear receive bracket.

8.Insert the accessory connector through the opening of the enclosure onto the edge of the connector board assembly.

9.Make sure that the accessory connector is completely inserted onto the connector board assembly and the back end surface of the accessory connector is flushed firmly against the back panel of enclosure.

10.Mount the retainer clip and secure it with two M4 screws.

11.Tighten the screws to 2.0 N-m.

6866576D03-A February 21, 2007