ALLEN & HEATH WZ20:8:2, Service Manual

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ALLEN & HEATH 2E-8SM
7
To completely remove the connector circuit board assembly
4.) First remove the base cover of the main unit to gain more access. Refer to 2 and 3 in the section
REMOVING AN INPUT, LEFT or RIGHT CIRCUIT BOARD for details on the removal of the base
cover.
5.) Cut the cable ties along the bottom edge of the connector circuit board fixing the harness to the connector
circuit board assembly and lift the circuit board assembly from the chassis.
6.) Then carefully disconnect the ribbon cable and the 4 flexible flat cables plugged into the circuit board
assembly.
7.) Before desoldering the wires connected to the circuit board, make a note of their colour and locations.
8.) The circuit board can now be completely removed from the chassis.
When all service work is complete, remove all debris such as solder, component legs and wire clippings from inside the
console and check your work carefully before reassembly. To refit the connector circuit assembly follow the above
procedure in reverse order. Make sure all harnesses are correctly aligned and plugged on. Test for correct operation.
Unit inverted with the base and connector cover removed.
CONNECTOR CIRCUIT
BOARD ASSEMBLY
Flexible flat cables