38
TK-390
DISASSEMBLY FOR REPAIR
Disassembly of Front Case and Chassis
1. Remove the 2 screws (
) and a cap fixed screw (
).
2. Press the chassis bottom upwards and remove the clips
(
) at the top. The front case is still connected to the
chassis by the FPC at this time so be gentle when lifting
upwards, otherwise unwanted stress is applied on the
FPC.
3. The front case and chassis can only be opened to the
side when connected by the FPC (
).
Chassis
Front case
Remove the TX-RX Unit from the Chassis
1. The TX-RX unit cannot be removed simply by removing
the seven screws (
).
2. A total of 9 solder connections, 6 on the RF power mod-
ule (
) and 3 on the antenna daughter board (
) must
be disconnected.
Remove the Universal Connector
1. The universal connector (
) is fastened to the chassis
with double-side tape.
2. First unsolder the connection on the antenna daughter
board (
).
3. Press firmly with a tool such as a screwdriver and so that
it can peel (
).
Note :
You must replace both parts together when re-
placing the universal connector or the FPC (
).
Remove the Side Key Assy
1. The side key assy is clips form a slide-hook structure. Lift
up gently and take from the side (
).
Disassembly of the Panel Assy
1. The LCD assy and toggle switch are joined by wire (
).
Use caution not to break this wire during handling.
1
2
3
4
5
6
7
8
9
10
11
12
Chassis
The waterproof
packing for the
front case cannot
be removed
unless the control
unit is detached.
Side key assy
13
Toggle switch
LCD assy
Panel assy
