TK-790/(B)/H(B)
DISASSEMBLY FOR REPAIR (TK-790/(B))
1. Removing the Case and Shield Cover
1. Remove the 9 screws ( 1 ), and remove the upper and lower halves of the case. (Remove the 4 screws holding the upper half and the 5 screws holding the lower half.) 2. Remove the shield cover ( 2 ).
3. Removing the Final Unit (X57-561 C/3)
1. Remove the 2 screws ( 5 ) holding the power module to the frame. 2. With a screwdriver, remove the leaf spring ( 6 ) holding the Q2 to the frame. 3. Desolder the power module. 4. Remove the 2 screws holding the lead terminal from DC connector (2P) on the rear. 5. Remove the 8 screws ( 7 ) holding the PC board. 6. Desolder CN4 on the antenna connector.
2. Removing the TX-RX Unit (X57-561 A/3)
1. Remove the 7 screws ( 3 ), and remove the PLL shield case. 2. Remove the connector (CN201) and coaxial plugs (CN104, CN203) from the final unit, and remove the flat cable (CN202) upwards from the control unit (CN502). 3. Remove the 5 screws ( 4 ).
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