Kenwood TS-140S Instruction Manual

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7. OPTIONAL ACCESSORIES7-1. CW FILTER INSTALLATION1 . Remove the case and open the subchassis. Pleaserefer to Sections 6-6-1 and 6-6-2.Caution:Open on a flat surface.. Remove the two screws on the boss of the smallprinted circuit board on the right side of the signalunit.. Plug the CW filter in to the connector. The filter isnot polarized so it may be placed in either direc-tion.Note:Do not pinch any cable harnesses when reas-sembling.4. Secure with the screws removed in Step 2.5. Close the subchassis and replace the top and bot-tom covers.Note:Avoid catching your fingers and wiring harnesswhen closing.7-2. TU-8 TONE UNIT INSTALLATION1.Remove the top and bottom covers of thetransceiver. Refer to Sections 6-6-1 and 6-6-2.2. Remove the backing from the cushion attached tothe front of the signal unit.Front panel rnSs :3. Remove the backing from the cushion attached tothe TU-8.4. Attach the TU-8 in the area illustrated (LabeledOPTION TONE UNIT) on the signal unit.Note:Do not pinch any cable harnesses when reas-sembling.5. Plug in the 3 pin connector that is located near theTU-8 as shown.6. Close the subchassis and replace the top and bot-tom covers.Note:Avoid catching your fingers and wiring harnesswhen closing.35