Kenwood NX-840, Service Manual

Page: 22 / 54

1-22 (No.RA011<Rev.001>)
Note:
When you supply power to the TX-RX PCB after remov-
ing the TX-RX PCB from the chassis, solder the positive
and ground terminals of the DC cord (Recommendation:
E30-3448-25) to the + and GND terminals of the TX-RX
PCB.
(6) Pull it out behind the chassis by rotating the bush [3] of the
DC cord 90 degrees in the direction of the arrow after the
screw [1] in the negative terminal is removed, and the pos-
itive terminal [2] is removed from the chassis.
3.2 Precautions for Reassembly
(1) When mounting the speaker holder, while suppressing the
speaker rear part (shaded area), fix the four tabs of the
speaker holder into the hollows of the front panel in order
([1], [2], [3], and [4]). Then, tighten the two screws of the
display PCB.
(2) When mounting the panel assembly, pass the flat cable
through the hole of the chassis as shown below then con-
nect the flat cable to connector of the panel assembly.
(3) Fit the panel assembly into the two tabs of the chassis top
side first.
Then, fit the panel assembly into the two tabs of the chassis
bottom side by turning the panel assembly.
3.3 Correspondence when replacing the LED (B30-2321-
05)
When replacing the LED (B30-2321-05), cut the leg of the LED
to 4mm (0.16 inch) after installing the Collar (J31-0565-15).
TX-RX PCB
Component side
GND
+
DC cord
[1] [1]
[2] [2]
[3] [3]
Speaker holder
Speaker
rear part
Display PCB
[1] [1]
[2] [2]
[3] [3]
[4] [4]
Panel assembly
Panel
assembly
Chassis
Chassis
Hole of
the chassis
LED
Collar
4mm (0.16 inch)