Command Board; Dash Control Head Board; Model W3 Hand-Held Control Head - Motorola ASTRO SPECTRA Service Manual

Disassembly/Reassembly Procedures: Final Reassembly
8.3.2

Command Board

NOTE: This assumes the PA is attached, the control head is detached, and the control head
interconnect board is disconnected.
1. Before reassembly, apply a thin coat of thermal compound (for example, Motorola Part No.
11-83166A01) to the bottom of the audio PA.
2. Insert the command board into the PA accessory connector (J503) before inserting it into the
RF board connector (P500). It might be necessary to angle the command board towards the
PA.
3. Ensure the accurate placement of the insulator between Q500, Q502, and Q521 and the
chassis wall. Be careful, when placing the command board, not to fold or damage the
insulator.
4. Start all six of the mounting screws before tightening and then tighten them evenly to ensure
you do not warp the board.
5. Reconnect the control head interconnect board to command board.
6. Plug and secure the control head with two screws.
7. Reconnect the VOCON board and option board (if any) prior to installing covers.
8.3.3

Dash Control Head Board

When reassembling the control head, make sure the microphone pins are properly inserted through
the elastomeric keypad. Also make sure the elastomeric keypad inserts are secured to the PC board.
8.3.4

Model W3 Hand-Held Control Head

NOTE: Numbers shown in parentheses in the following procedure refer to item numbers in
Table 11.1, "Model W3 Hand-Held Control Head Exploded View," on page 11-2
1. To reassemble the housing assembly [7]:
A. Insert the transmit indicator [11] into the housing. Ensure that the top surface of the
lightpipe is below the label recess of the housing.
B. Attach the nameplate label [13] to the front of the housing. Ensure that the label is
securely attached.
C. Install the PTT actuator [9] into the housing. Ensure that its lip is seated in the grove in the
housing.
D. Install the PTT lever [10] and the PTT boot [12] into the housing. Ensure that the lever is
seated in its nest and the boot is located properly in the recesses in the housing.
E. Install the keypad [6] into the housing. Ensure that all of the keys are located in the correct
openings in the housing.
2. Install the microphone assembly [8] into the keypad. Ensure that the front surface of the
cartridge is located up against the keypad membrane.
NOTE: The membrane is the rain seal and is very sensitive to puncture by sharp objects.
3. Connect the microphone cable connector to the mating location on the circuit board [5].
4. Install the circuit board [5] into the housing assembly [7] as follows:
A. Hold the housing assembly so that its key openings face downward and its top faces away
from you.
6881076C20-E
8-17
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February 3, 2003