Velleman projects K4040 Assembly instructions - Manual (Page 18)

18
Fit the main PCB into the housing and screw it down with the black Allen bolts along the underside.
Connect the mains lead to the screw connector, MAINS, with the blue wire to the N terminal and the
brown wire to the L terminal. The short earth wire is connected to the EARTH connector.
Connection of the transformers:
Connect the left-hand output transformer to the left-hand connector, SK7, and the right-hand
output transformer to the right-hand connector, SK8.
The twisted yellow and red wires must also be connected to the proper connector. See fig. 9
Connect the leads of the supply transformer to the screw connector, SK6.
The thick grey wires may be twisted and connected the 6.3V connection (SK3) of the left-hand
amplifier.
The thick green wires should be connected in the same way to the 6.3V connection of the right-
hand amplifier PCB.
Connect the screened cable from the input PCB to the L connection (left channel) and the screen
to the GND connection. Do the same for the right channel, R.
28. Assembly and wiring
Assembly and wiring
IMPORTANT: The connector leads of the transformer may not be shortened.
If there is more than one wire in an insulating sleeve, then they MUST be
soldered together, and only then connected to the screw connector.
!
GREEN
VIOLET
YELLOW LS+
BROW N
BLACK
BLACK
RED LS-
ORANGE
OUTPUT TRANSFORMER
ZD043
YELLOW
RED
BLUE
8 4 0
BROW N
ORANGE
RED LS-
BLACK
BLACK
GREEN
VIOLET
YELLOW LS+
ZD043
OUTPUT TRANSFORMER
BLUE
RED
YELLOW
8 0 4
POWER TRANSFORMER
N BLUE
L BROWN
6.3VAC
GRAY
RED
ORA
N
GE
BL
UE
YE
L LOW
YEL
L O
W
BL
AC
K
BR
O
W
N
PI
NK
ZD043
OUTPUT TRANSFORMER
0 8 4
6.3VAC
GREEN
GND
R
GND
L
OUTPUT TRANSFORMER
8D002
8 0 4
ZD043
L R
MAINS
EARTH
Fig. 9.0
Fig. 10