2
Between wires
4
and
5
: 7V
(
program #1
).
Between wires
4
and
6
: 7V
(
program #2
).
Between wires
4
and
7
: 7V
(
program #3
).
Between wires
4
and
8
: 7V
(
program #4
).
Verify these voltages only when
there are any modules
1101.1
and
1102.1
installed.
Diagram 1-A
First we will check the voltage
levels in the general line.
Between wires
4
and
2
: 15V
Between wires
4
and
9
: From
4
to 15V
De-centralised part of the
system (those modules that are
placed outside the rack
1707
).
Centralised part of the system
(those modules directly
mounted in the rack
1707
).
If any of the voltage levels is
not correct, we will divide the
installation into two parts:
To guess where is the failure located, we will gradually disconnect the wires that correspond
to the function that does not work correctly (with the general line connected to CPU
1316
) in
different parts of the line, until we isolate the section where theres the wrong cable or module.
See
diagram #2
where a example shows how
to isolate a malfunction in the wires
9
and
90
, that could be applied to any other
malfunction in any other wire.
If the voltage levels are correct, then the
problem is originated in the de-centralised
part of the installation.
Disconnecting first the general line from the CPU
1316
(15-pin terminal strip) and with the control
console connected directly into the audio processor,
we will measure the voltage levels again.
The voltage levels are not correct.
We will disconnect all the modules installed
in the rack, leaving only
1315
,
1316
and
1202
.
Then we will measure again.
If the voltage levels are still wrong, the most
possible reasons are the following:
If there are more than 15 Vdc between wires
4
and
2
, the
1315
is faulty.
If there are 3V between wires
4
and
9
,
then the
1316
is faulty.
Remember that, as there is not any other
module connected, there must be no voltage
at wires
5
,
6
,
7
or
8
.
If the new levels are correct, we will connect the rack modules
one by one and measure the voltage levels until we discover
which is the module that is generating the problem.
Between wires
4
and
90
: From
0
to 5V
Summary of Contents for Millennium
Page 29: ......
Page 37: ...37 Reserved for new and forthcoming products ...
