Disassembly For Repair - Kenwood 144MHz FM TRANSCEIVER K2E Service Manual

TH-K2AT/K2E/K2ET
How to remove the case assembly from the
chassis
1. Remove two screws (
x
2. Pull out two knobs (
3. Pull out the SP and MIC parts of the cap from jacks (
4. Turn the unit over with the bottom of the chassis facing
upwards, and remove the chassis (
b
assembly ( ).
5. Remove the speaker lead (
the TX-RX PC board (TX-RX unit A/3).
How to remove the PC board
Numeric key PC board (TX-RX unit B/3)
1. Remove three screws (
2. Lift the numeric key PC board and remove it from the
connector (CN9) of the TX-RX PC board (
PTT PC board (TX-RX unit C/3)
3. Remove one screw on the PTT PC board (
4. Pull the PTT PC board to the left and remove it from the
connector (CN6) of the TX-RX PC board (TX-RX unit A/3)
Ω
( ).
TX-RX PC board (TX-RX unit A/3)
5. Remove the SP/MIC jack cover (
6. Remove two screws (
cover (antenna terminal section).
7. Remove two screws (
cover (final amplifier section).
8. Remove eight screws (
board.
9. Absorb solder from the antenna terminal (
with a solder absorber.
Note: Do not melt the shadow plate (
moving the tip of the solder absorber close
to the antenna terminal.
10. Remove the TX-RX PC board from the chassis, then remove
the encoder volume FPC (
of the TX-RX PC board.
2

DISASSEMBLY FOR REPAIR

z
) holding the chassis.
) and remove two round nuts (
n
) from the case
m
) from the connector (CN2) of
,
) on the numeric key PC board.
.
).
/
).
≈
).
ç
) holding the shield
√
) holding the shield
∫
) on the TX-RX PC
~
)
µ
) when
≤
) from the flat cable connector
c
).
v
).
b
,
,
TX-RX unit (B/3)
.
TX-RX unit (C/3)
/
∫
Ω
∫ ∫
CN6
TX-RX unit (A/3)
CN9
z
c
c
v
m
ç
√
∫
µ
∫
CN2
≈
∫
~
≤
n
x
x