Access ATB420 Series Service Manual page 16

Access keyboards ATB 420/421 Multi-Function Keyboard Product Specification and Service Guide
Ensure the keyboard is connected to the PC keyboard port.
1.
Ensure the PC is turned off. (This is in case connections are momentarily short circuited
2.
while plugging in the cables)
Ensure the power switch of the ProgBox is in the left position (KBD).
3.
Connect the null modem cable from the ProgBox to the 9 way D socket on the back of the
4.
keyboard. (Note: this maybe covered by a blue clip on cover)
Connect the AVR programming cable from the progbox to the socket on the underside of
5.
the keyboard. (Note: This may be covered by a white stick on cover which should be
removed using a sharp instrument, e.g. a scalpel))
Turn on the PC.
6.
Ensure the PC is logged out.
7.
Lab mode – Keyboard powered from a DC power supply.
(Note the illustration below shows the connection of the cables. It is not necessary to put the
keyboard upside down)
Arrow on
label points to
rear of
keyboard
Connect a 5V DC power supply to the PS/2 power adaptor (AKP109)
1.
Ensure the power switch of the ProgBox is in the left position (KBD).
2.
Connect the null modem cable from the ProgBox to the 9 way D socket on the back of the
3.
keyboard. (Note: this maybe covered by a blue clip on cover)
Connect the AVR programming cable from the ProgBox to the socket on the underside of
4.
the keyboard. (Note: This may be covered by a white stick on cover,which should be
removed using a sharp instrument, e.g. a scalpel))
Connect the keyboard cable to the PS/2 power adaptor.
5.
Operating the ProgBox
On start-up the ProgBox will display:
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