Kenwood 144MHz FM TRANSCEIVER K2E Service Manual page 4

TH-K2AT/K2E/K2ET
Special care and attention required for assembly
1. Gluing to the key top (MIC element section)
You must also glue on the speaker storage area and heap
the glue up until wealthy glued on the speaker storage area
and the key top for waterproofing the MIC element side of
the key top. (Fig. 1)
Heap the glue up until wealthy glued on the speaker
storage area and the key top (MIC element section).
2. Bending the LCD hardware fixture (J21-8456-03) tabs
(1) Insert the tabs of the LCD hardware fixture into four holes
in the LCD installing position of the TX-RX PCB (TX-RX unit
A/3). (Fig. 2)
4
DISASSEMBLY FOR REPAIR
Fig. 1
Fig. 2
(2) By pressing the LCD hardware fixture from the component
side of the TX-RX PCB, you must bent all 4 tabs of the LCD
hardware fixture being visible from the foil side until the
bases of each tabs are folded at least 45 degrees (Fig. 3). If
the bending angle of the tabs of the LCD hardware fixture
is less than 45 degrees, a display error may occur.
Bending position
Fig. 3
3. PTT PCB (TX-RX unit C/3) installation procedure
Installing the PTT PCB on the TX-RX PCB and chassis are
as follows:
(1) Insert the PTT PCB connector (CN7) into the TX-RX PCB
connector (CN6) lightly.
(2) Push three parts of the PTT PCB to contact tightly with the
chassis. There may be a small gap between the connectors.
(Fig. 4)
Note: A double-side adhesive tape (J99-0376-04) is used
behind the PTT switch. When reassembling the PTT
PCB to the chassis, press the PTT PCB (under the PTT
switch) so that the tape hold the PCB and chassis
securely.
PTT PCB (C/3)
Chassis
OK
PTT switch
Push three parts of the PTT PCB
to contact tightly with the chassis.
PTT PCB (C/3)
Chassis
NG
PTT switch
Fig. 4
(3) Tighten one screw in the PTT PCB.
Min 45
degrees
NG
NG
CN6
A bit
clearance
CN7
CN6
No
clearance
CN7