Kenwood NX-203 Service Manual page 9

■ Inserting the Volume and Channel switch into
the chassis
Insert the volume and channel switch into the chassis
with the VOL/CH FPC formed as shown in the fi gure.
Volume
Channel switch
■ Forming the VOL/CH FPC, Cord ASSY and Uni-
versal connector FPC
Form the VOL/CH FPC, Cord ASSY and Universal con-
nector FPC as shown in the fi gure.
VOL /CH FPC
Cord ASSY
Note:
Fold indications are printed on the Cord ASSY and Uni-
versal Connector FPC.
"––––" line shows creased line on the top.
"- - - -" line shows creased line on the bottom.
TX-RX
J87-0005
Cord ASSY
J87-0007
Universal Connector FPC
DISASSEMBLY FOR REPAIR
VOL/CH FPC
Universal
Connector FPC
CONT
■ Relay hardware (E29-1242-04) installation proce-
dure
1. Fit one side of the relay hardware to a right corner of the
chassis using a pair of tweezers q.
2. Fit the other side of the relay hardware to the rib of the
chassis w.
■ Reapply encapsulant and protective sheet on
the TX-RX unit as needed
Before repair of this radio, note that there are three areas
on the TX-RX unit with encapsulant (special polymer con-
taining silyl group, or a silicone coating) for mandatory
continued Safety Protection: Around the protection Zener
diodes (D404, D405), and the two fuses (F400, F401).
The coating can be removed for repairs, but a similar (CEME-
DINE SX720W) and equal coating material with an electrical
rating must be applied after repair, suffi cient to cover around
these critical components and their soldered leads & pads.
Use enough coating to completely cover the component
and solder pads to approximately 1mm, but not too much.
Refer to the photo illustrations.
A: Around
Zener diodes
D404,D405
C: Fuse
F400
Protective sheet
(G1B-0193-00)
NX-203
NG area around LED
Cushion
B: Fuse
F401
Cushion
Zener Diodes
Coil
9