Disassembly / 拆卸; Precautions For Disassembly - Kenwood NXR-1800 Service Manual

3.1

Precautions for Disassembly

3.1.1 TX-RX UNIT disassembly procedure
(1) Remove the 12 screws on the top of the repeater and
remove the top plate. <1>
(2) Disconnect the FPC from the TX-RX UNIT connector. <2>
Screw x12
<1>
Top plate
FPC
<2>
(3) Pull out the knob and remove the 5 screws then remove the
PANEL ASSY from the chassis. <3> <4>
When the knob is pulled out, the spring inside the knob is
removed at the same time.
PANEL ASSY
Knob
<3>
Screw x5
<4>
Knob spring
1-50 (No.RA094<Rev.002>)
SECTION 3
DISASSEMBLY / 拆卸
Chassis
(4) Remove the solder connecting the two receptacles and TX-
RX UNIT. <5>
(5) Disconnect the fan motor wire from the TX-RX UNIT
CN3005. <6>
<5>
(6) Remove 18 PCB screws, 2 shielding case screws and 3
radiation plate screws. <7> <8> <9>
(7) Remove the TX-RX UNIT from the chassis.
<7>
<7>
PCB
Screw x18
<7>
TX-RX UNIT
Note:
The power connector of the service TX-RX UNIT is not
fixed with screws. When replacing a defective TX-RX UNIT
with a service TX-RX UNIT, the power connector should be
fixed with the reuse screws of the TX-RX UNIT.
Screw x2
Power connector
Desoldering
<5>
Desoldering
<6>
CN3005
<9> Radiation plate
Screw x3
<7>
<8>
Shielding case
<7>
Screw x2
Service TX-RX UNIT