TM9100 Service Manual Disassembly and Reassembly 135© Tait Electronics Limited August 20055.4 Disassembling and Reassembling the Control HeadDisassemble only as much as necessary to replace the defective parts.Reassembly is carried out in reverse order of the disassembly.The circled numbers in this section refer to the items in Figure 5.9 onpage 137.The connectors of the control-head board and the orientation of the speakerand speaker clamp are illustrated in Figure 5.8.1. With your fingers, pull off the volume control knob 1&.Do not use any tools as this might cause damage.2. Unscrew the two screws B and remove the adaptor flange C.3. Disconnect the control-head loom D.4. If an optional circuit board is fitted, unplug it from the control-headboard F (refer to Figure 5.8).5. Note whether the speaker is connected or disconnected. If it isconnected, disconnect the speaker cable from the speaker connectorof the control-head board F (refer to Figure 5.8). Note that the radiomust be returned to the customer in its original configuration.6. Release the lock of the LCD connector and unplug the loom of theLCD assembly 1@ (refer to Figure 5.8). Note that the loom runsthrough a slot in the space-frame J.Figure 5.8 Speaker orientation and connectors of the control-head boardconnectors foroptional circuit boardconnector for speakerconnector forloom of LCD assemblyconnector forcontrol-head loom 3470z_01pads for leads ofconcealed microphonespeaker terminalslegs of thespeaker clamp
