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Crystal Vision
Trouble shooting
Indigo PSU Manual R1.1
13
16/06/2010
Yell/Grn
Red
None
Upper PSU fault
Normal operation
Change PSU 2, check supply, change
upper inlet fuse.
PSU 3
Unlit
Yell/Grn
Red
None
None
Upper PSU fault
No PSU 3 detected
Normal operation
Change PSU 3,
Mains
Input
Unlit
Yell/Grn
Red
None
None
Upper or Lower PSU
fault
Mains Combiner not fitted
Normal operation
Supply fault, either PSU 1 or PSU 2 will
also show a fault
Temp
Yell/Grn
Red
None
FRAME TOO HOT
Normal operation
Ambient temperature too high/fan fault
Comms
Unlit
Flash amber
None
None
Press Device in Statesman mode for
comms status
If a PSU is not fitted, the corresponding LED will not illuminate. If the front panel is
open, the Front Fan LED will also be unlit.
Power supply related faults operate a relay the contacts of which are brought out to the
Remote connectors. These contacts can be used to operate external indicators as desired.
Please refer to the power supply pinout section for more details.
The PSU-150i-48V line fuse is located internally to the PSU module. Replacing this fuse
will involve dismantling the module. See replacing PSU-150i-48V fuse
Note:
The red LED built into the front of the vertical PCB on the LHS of the PSU will flash
repeatedly (on for one second and off for one second) if there is no speed fan signal
present on the connector SK1( the front LHS of the PSU). This will occur when the PSU
Fan assembly is removed or if the PSU fan stops. When the fan speed signal is present
the LED is unlit. The same red led will light up continuously if levels of the power rails
(+5.75V or –6.0V) are outside operational limits. Refer to Section 2.6 for further details.
Replacing the mains input fuses
The mains input fuses are fitted inside the IEC 320 connectors at the rear of the frame. A
spare fuse is also stored inside the connector. The fuse can only be accessed when the
power cord is disconnected.
The sequence is as follows: -
Disconnect ALL the power cords (one or two depending on configuration) from
the rear of the frame.
Using a flat bladed screwdriver or similar tool gently lever out the fuse drawer
from the relevant IEC connector using the tab visible at the bottom of the
connector depression
Remove the defective fuse and replace with either the spare fuse or with a 5A,
250V time delay fuse
Replace the fuse drawer and reconnect the power cords