Allenheath DP 1000 SERVICE MANUAL Instrukcja Użytkownika Pobierz pdf (Strona 12)

12 icon series

Brown

16.5V

Blue

16.5V

White

Red

Orange

Black

42.7V

Yellow

42.7V

Green or

Green/Yellow

Transformer

Earth screen

Blue

Live (see table

for different

territories)

Voltage Primary Winding Colour

Brown240V

Red

220V

120V Black

White110V

Grey

100V

Amplifier

PCB

Toroid

Transformer

Mains

PCB

Green Earth wire

Green

Earth

fig.11

Removing the Toroid Transformer (DP1000)

Before beginning any service work, remove all power to the unit and disconnect any signal cables where

necessary. Adopt static electricity working procedures when carrying out service work. Ensure

adequate lighting and use the correct tools. Access to the Toroid Transformer can only be achieved

once the Amplifier circuit board has been removed (see ‘Removing the Amplifier Circuit Board

Assembly’).

1) Referring to fig.10 remove the Toroid Transformer bolt.

2) Referring to fig.11, de-solder all transformer wires from the Amplifier circuit board and remove the

green or green & yellow Transformer earth wire from the right earth post (see fig.11). Pull off the

two transformer wires connected to the Mains circuit board.

3) Remove the Toroid Transformer from the console.

To refit the Toroid Transformer, follow the above procedure in reverse order. Make sure all Transformer

wires are re-soldered correctly. Test for correct operation.

Toroid Transformer Mains Wiring

The diagram below shows the Transformer Mains wiring for different territories, when re-fitting the

transformer be sure to re-connect the wires as shown.

fig.10

Toroid Transformer Bolt

1 2 ... 7 8 9 10 11 12 13 14 15 16 17 ... 24 25

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Allenheath DP 1000 SERVICE MANUAL Instrukcja Użytkownika Strona 12

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