Removing The Tx-Rx Unit (X57-561 A/3); Removing The Final Unit (X45-356); Disassembly For Repair - Kenwood TK-790 Service Manual

DISASSEMBLY FOR REPAIR (TK-790H(B))
1. Removing the Case and Shield Cover
1. Remove the 12 screws (
lower halves of the case. (Remove the 6 screws holding
the upper half and the 6 screws holding the lower half.)
2. Remove the 2 screws (
2

2. Removing the TX-RX Unit (X57-561 A/3)

1. Remove the 7 screws (
3
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
), and remove the upper and
1
), and remove the shield cover.
), and remove the PLL shield
).
1
1
1
6
6
CN203
3
3
3
3
3
3
4
4 4
3
TX-RX
unit
4
4
TK-790/

3. Removing the Final Unit (X45-356)

1. Remove the 2 hexagonal bosses (
2. Remove the 3 screws (
and transistor to the frame.
3. Desolder the power module.
4. Remove the 1 screw (
5. Remove the 4 screws (
6. Remove the 2 screws (
from DC connector (4P) on the rear.
7. Remove the 13 screws (
8. Desolder W3 on the antenna connector.
1
1
2
8
8
9
5
9
9 9
9
9
9
7
9
9
Final
unit
6
CN201
CN104
Control
unit
1
1
( B ) /H
).
5
) holding the power module
6
) holding TH1.
7
) holding the final transistor.
7
) holding the lead terminal
8
) holding the PC board.
9
1
1
( B )
23