Kenwood TK-790 Service Manual

Also see for FleetSync TK-790: Specifications Instruction manual Specifications Instruction manual

23TK-790/(B)/H(B)DISASSEMBLY FOR REPAIR (TK-790H(B))1. Removing the Case and Shield Cover1. Remove the 12 screws ( 1 ), and remove the upper andlower halves of the case. (Remove the 6 screws holdingthe upper half and the 6 screws holding the lower half.)2. Remove the 2 screws ( 2 ), and remove the shield cover.2. Removing the TX-RX Unit (X57-561 A/3)1. Remove the 7 screws ( 3 ), and remove the PLL shieldcase.2. Remove the connector (CN201) and coaxial plugs(CN104, CN203) from the final unit, and remove the flatcable (CN202) upwards from the control unit (CN502).3. Remove the 5 screws ( 4 ).3. Removing the Final Unit (X45-356)1. Remove the 2 hexagonal bosses ( 5 ).2. Remove the 3 screws ( 6 ) holding the power moduleand transistor to the frame.3. Desolder the power module.4. Remove the 1 screw ( 7 ) holding TH1.5. Remove the 4 screws ( 7 ) holding the final transistor.6. Remove the 2 screws ( 8 ) holding the lead terminalfrom DC connector (4P) on the rear.7. Remove the 13 screws ( 9 ) holding the PC board.8. Desolder W3 on the antenna connector.1111128 899999999 963 3 33333444 4 411116675CN203ControlunitTX-RXunitFinalunitCN104 CN201