Replacing The Remote Interconnect Board; Low-/Mid-Power Radios; High-Power Radios - Motorola ASTRO W3 Service Manual

5-6
7. Before installing a new Interface PC board (P/N 0105950T92), check to ensure that all
gaskets are in place. Gasket (P/N 3205197X01) fits the perimeter of the plastic housing on
the bottom surface, and is placed against the sealing rim in back housing. Gasket (P/N
3205198X01) fits inside the pin-out area on bottom of plastic housing. Gasket (P/N
3205082E90) O-rings (2) fit into recessed areas around the bottom of the screw clearance
holes.
8. Attach the new interface PC board to the back housing with the two screws: torqued to
6-8 in.-lbs.
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C a u t i o n
9. Reassemble the back housing to the front housing with the two screws: torqued to 4-6 in.-lbs.
5.5

Replacing the Remote Interconnect Board

5.5.1

Low-/Mid-Power Radios

1. Remove the two front panel screws using a 2.5 mm hex-key driver.
2. Grasp the front panel firmly, and carefully unplug it from the radio.
3. Remove the three screws that hold the remote interconnect board to the front panel using a
Torx T10 driver.
4. Install the new remote interconnect board onto the front panel, and replace the screws.
Torque the screws to 6-8 in.-lbs.
!
C a u t i o n
5. Reassemble the front panel into the radio and replace the screws.
6. Torque the screws to 4-6 in.-lbs.
5.5.2

High-Power Radios

1. Use a Torx T15 driver to remove the two screws in the radio top cover and then remove the
radio top cover.
2. Remove the ribbon cable (38-conductor) from between the command board and the
interconnect board by first disconnecting the cable at the command board side and then at
the interconnect board.
3. Disengage the retaining wire on the back of the interconnect board at the chassis side.
4. Use the radio key to unlatch the radio handle, and use a Torx T15 driver to remove the two
interconnect board screws that are inside the handle.
5. Turn the radio upside down and use a Torx T15 driver to remove the four bottom-cover
screws. Remove the bottom cover.
6. Remove the RF-board shield and unplug the coaxial cable that comes up from the other side
of the radio. Move the end of the coaxial cable out from behind the interconnect board.
September 26, 2003
Troubleshooting: Replacing the Remote Interconnect Board
Take care to avoid misalignment of connector pins
Take care to avoid misalignment of connector pins. Remove the
radio top cover to allow visual inspection during connector alignment.
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6881096C77-O