14TKR-8503. External Speaker (KES-4)The TKR-850 has a internal built-in speaker (5W/8Ω), andthe external speaker output from the TEST/SPKR connector(15-pin) on the rear of the radio is 4W/4Ω. Use externalspeaker KES-4.3-1. Connection for the KES-4 With the TKR-850 When taking the AF output from the TEST/SPKR connector (15-pin) on the rear of the radioThe following tools are required for changing the connec-tor.• Extracting toolThe following extracting tool is recommended :Molex Inc. Order No. : 11-03-00021. Remove the connector with jumper from the externalspeaker connector on the rear panel of the radio. (Fig. 4-1)Note : Save the jumper, which is required when the radiois used without the external speaker.2. Remove the terminals with the jumper from the connec-tor housing holes number 9 and 12 using the extractingtool.Removing the jumper lead (Fig. 4-2)1) Insert the extracting tool (11-03-0002) into the con-nector while pushing the jumper lead in the directionof (a).2) Push the extracting tool into collapse the barbs of thecrimp terminal.3) Pull out the lead while continuing to push the extract-ing tool in the direction (b).3. Reinsert the terminal with the black and white stripe leadinto hole number 12, and the terminal with the black leadinto hole number 6. (Fig. 4-3)4. Attach the connector to the external speaker connectoron the radio.Note :Relationship between TEST/SPKR connector (15-pin)connection and speaker output.When pins 9 and 12 are shorted : Built-in internal speakeris used.When pins 9 and 12 are open and output is from pins 6and 12 : KES-4 is used.INSTALLATIONFig. 4-1Fig. 4-2Fig. 4-3