Kenwood TK-885 Service Manual

Also see for TK-885: Instruction manual Service manual

Contents

10TK-885 INSTALLATION5. Optional Voice Scrambler FunctionYou can use the voice scrambler in the following twoconfigurations.1. Assign this function to the Scrambler key by using theprogramming software (KPG-62D).When the Scrambler key is pressed, the ··· indicatorappears, and the optional (scrambler) function is enabled.When the key is pressed again, the ··· indicator goesoff and the function is disabled.2. Using the KPG-62D, you can set the voice scrambler tobe always active, without pressing a key. The operatorcannot switch off the voice scrambler.5-1. Configuring a Scrambler CodeThe scrambler code cannot be changed using the trans-ceiver keys. Only one scrambler code can be set into thetransceiver. If you want to change the code, you must usethe KPG-62D to reconfigure the scrambler code.5-2. Voice Scrambler Board Connection• Modification1. Remove the upper half of the case of the TK-885.2. Remove R529 and R571 on the Control unit (X57-615 B/2). MPTTGNDSBTXAOTXAIRXAORXAIR571R529Control unit (B/2)Foil side viewFig 7Code 4 (C4)Code 3 (C3)Code 2 (C2)Code 1 (C1)(TX-RX PCB)(TX-RX PCB)(TX-RX PCB)(TX-RX PCB)(TX-RX PCB)(Cont. PCB)(Cont. PCB)(Cont. PCB)TXAI (TXAI)RXAI (RXAI)OPT (OP)MPTT (MPTT)SB (SB)GND (GND)RXAO (RXAO)TXAO (TXAO)R529RemoveR571RemoveTK-885Scrambler board( ) : PCB silk name(Cont. PCB)(Cont. PCB)(Cont. PCB)(Cont. PCB)C4C3OPC2C1TX-RX unit (A/2)Component side viewFig. 86. PA/HA Unit (KAP-1 : Option)6-1. Installing the KAP-1 in the TransceiverThe Horn Alert (max. 2A drive) and Public Address func-tions are enabled by inserting the KAP-1 W1 (3P; white/black/red) into CN3 on the TX-RX unit, inserting W2 (3P;green) into CN5 on the TX-RX unit, and connecting the KCT-19 (option) to CN2 and CN3 of the KAP-1.• Installation procedure1. Open the upper case of the transceiver.2. Insert the two cables ( ) with connectors from theKAP-1 switch unit into the connectors on the transceiver.3. Secure the switch unit board to the chassis with a screw( ). The notch ( ) in the board must be placed at thefront left side.4. Attach the cushion on the top of the KAP-1 switch unit.13 2