Crystal Vision
Installation
Indigo PSU Manual R1.1
9
16/06/2010
Inserting and removing power supplies
In multi-supply frames one of the power supplies at a time can be inserted and removed
while the system is powered without damage. However, this must be done quickly as
there will be no forced convection air, as the PSU fan assembly has to be removed.
To gain access to the Indigo PSUs proceed as follows:
If possible, power down the frame
Pull down the front panel using the black knobs or handles at either side of the
panel
Release the two captive screws to the left of the PSU fan
Remove the fan assembly by applying sideways pressure on the fan assembly
outwards and towards the right hand frame side
Note:
Take care not to damage the panel ribbon cable when removing the fan assembly.
Once the fan assembly has been pulled backwards to free the fan connector plugs, the
PSU fan will stop and the front panel PSU FAN LED will change from green to red.
Removing the PSU fan assembly
Lower PSU-75i – front view
In addition to the PSU and fan LEDs on the front control panel, there is also a red error
LED on the PSU. This LED will flash slowly if there is no fan speed signal present on the
fan connector SK1 when the PSU fan assembly is removed or if the PSU fan stops.
The error LED will light up continuously if power rail levels are outside operational
limits. When the fan speed signal is present and power rails are normal the error LED is
unlit.
Removing a PSU
To remove a PSU proceed as follows:
Apply sideways pressure on the PSU handle towards the right and remove the
PSU by pulling it forward
Take care when removing the lower PSU not to damage the panel ribbon cable
Caution:
There are no user serviceable parts inside the power supply module covers. The safety
covers should not be removed even when the module is disconnected.
Note:
Check that the two/one switch behind the control panel is set correctly for the number of
PSUs installed to prevent redundant PSU warnings.
