Werbung
This document describes the sw
procedure for the Advance 86a system board
1. Switch Settings
1.1 Switch 1
This s w it c h is used to define the type of display device
connected to the system board. If a R.B.G. monitor is being used
then the slider of SWl should be in the position nearest the card
edge. If a composite video or a domestic television is being used
then the slider of SWl should be set in the position nearest to
I.C.66.
If the switch is set for R.G.B. monitor when using a domestic
T.V. then unintensified characters will appear very faint on the
display.
1.2 Switch 2
This is a four position D.l.L. switch located near 1.C.93. Each
of the four switch elements has the following effects.
1.2.1 Switch 2 element 1
This element is used to indicate if an Advance 86b expansion unit
is fitted or not. For Advance B6a unit boards (unexpanded) this
switch is set to the ON position.
If an expansion chassis is connected then this switch will be set
to the OFF position.
1.2.2 Switch 2 element 2
This element is set to the ON position for use with PAL domestic
T.V.s and PAL standard composite video monitors.
it is set to the OFF position for use with NTSC domestic T.V.s
and ilTSC standard composite video monitors.
For R.G.B. monitors the switch should be set to the OFF position.
L
1.2.3 Switch 2 elements 3 & 4
These two switches are not used. They will both be set to the OFF
postion on all boards.
L
1.3
Switch 3
This switch is positioned near 1.C.109. It is used to determine
the signal drive levels to the audio cassette.
The slider is set nearest
input. The slider is set nearest to J2 for audio cassette MIC.
L
input.
ch settings and video set up
to I.C.109 for audio casette AUX.
Werbung
