Velleman-projects K4040 Assembly instructions Manuale Utente Scaricare il pdf (Pagina 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+

BROWN

BLACK

RED LS-

ORANGE

OUTPUT TRANSFORMER

ZD043

YELLOW

RED

BLUE

8 40

BROWN

ORANGE

RED LS-

BLACK

GREEN

VIOLET

YELLOW LS+

ZD043

OUTPUT TRANSFORMER

BLUE

RED

YELLOW

804

POWER TRANSFORMER

N BLUE

L BROWN

6.3VAC

GRAY

RED

ORANGE

BLUE

YELLOW

BLACK

BROWN

PINK

ZD043

OUTPUT TRANSFORMER

084

6.3VAC

GREEN

GND

OUTPUT TRANSFORMER

8D002

804

ZD043

L R

MAINS

EARTH

Fig. 9.0

Fig. 10

1 2 ... 13 14 15 16 17 18 19 20 21 22 23 ... 27 28

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Velleman-projects K4040 Assembly instructions Manuale Utente Pagina 18

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