Acorn ECONET Посібник - Сторінка 3

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Installing the =NET module printed circuit board

Included in the ECONET module upgrade kit are two plastic printed circuit board

support posts. These must be fitted to the main printed circuit board before installing the

ECONET module.

The positions at which these posts are to be fitted are shown in figure 1. When fitting the

P.C.B supports, ensure that the base flange does not interfere with any component on the

P.C.B. To fit the support, insert one end into the hole in the P.C.B and press down gently.

When the support is correctly fitted, it will not be possible to withdraw it from the hole in

the P.C.B. Care must therefore be taken to ensure the correct positioning of the P.C.B

support before pressing it home.

When the P.C.B supports are installed on the main P.C.B, the ECONET module should

be placed in position ensuring that:

1. The pins of PL1 on the ECONET module are aligned with the corresponding holes in

SK5 on the main P.C.B. The two WEST moat holes of SK5, labelled 'a' and 'b', are not

used.

2. The pins of PL2 on the ECONET module are aligned with the corresponding holes in

SK6 on the main P.C.B.

3. The P.C.B supports are aligned with the corresponding holes on the ECONET module

P.C.B.

When you art satisfied that all the pins and supports are correctly aligned, the ECONET

module P.C.B may be pressed gently into place. The ECONET module is correctly

seated when the barbs on the tips of the P.C.B supports have cleared the surface of the

ECONET module P.C.B. An audible click should be heard when the barbs spring into

place securing the P.C.B.

Take care not to exert too much pressure when pressing home the ECONET module P.C.

B, this may lead to damage of the various connectors.

Installing the ANFS

Having fitted the ECONET module, it is necessary to fit the Advanced Network Filing

System (ANFS) ROM.

The ANFS ROM must be inserted into one of three sockets, IC27,37 or 41. It is

recommended that socket IC27 should be used where possible. If it is not possible to use

socket IC27 then one of the other two sockets may be used, but it will be necessary to

change the position of a link on the main P.C.B (see NOTE 1).

To insert the ANFS ROM, hold the ends of the IC between thumb and forefinger, and

line up all the pins over- the destination socket.