Specifications
Page A–2
FOCUS System Manual
This procedure details how to replace a barrier-
type interface (F020PWRI1) with a
compression-type interface (F020PWRI2).
Failure to follow the steps exactly, as shown
here, could result in improper operation of the
FOCUS chassis.
Introduction: The FOCUS power supply
interface is held in place by 3 screws that go into
3 stand-offs behind it. Also behind the interface,
there are 25 pins that plug into matching headers.
It is very important that these pins do not get bent
and that they all go into the matching headers.
1. De-energize the chassis FROM
SOURCE.
2. Remove all wiring from existing barrier-
type interface F020PWRI1 and ground
lug.
You may want to label the wiring for ease
in re-installation.
It is easier to remove the wiring while the
interface is held in place by the mounting
screws.
Wiring must be removed from each screw
(both on the terminal strip and ground
screw).
3. Remove plastic cover on interface (if
installed).
The cover is held on by 3 screws.
These screws will be re-used with the new
interface.
4. CAREFULLY pull the interface directly
straight out.
Any sideways/up/down movement, while
pulling the interface out, could result in
bent pins.
5. Inspect the pins and ensure that all are
perfectly straight.
6. Line up the compression-type interface
F020PWRI2.
Holding the new interface lightly in place,
check to make sure all the pins line up.
7. While certain that the pins are lined up,
gently press the interface into place.
Press on the top and bottom evenly.
8. Install the NEW protective cover.
9. Install the 3 mounting screws.
10. Re-connect all wiring and ground after
redressing wire ends as needed.
11. Re-energize the chassis.
Ensure all functions work properly.
FOCUS Power Supply Terminal Block Replacement Procedure
MAIN
POWER
STANDBY
POWER
MAJOR
ALARM
MINOR
ALARM
EXTERNAL
ALERT
1
TB1
POW
ER
SUPPL
Y INTERFACE
POW
ER
SUPPL
Y INTERFACE
2
3
4
5
6
7
8
9
10
MAIN
POWER
STANDBY
POWER
MAJOR
ALARM
MINOR
ALARM
EXTERNAL
ALERT
1
2
3
4
5
6
7
8
9
10
Ground
Ground
Power Supply Interfaces.
Left – F020PWRI1, Right – F020PWRI2