Mediastar 770 - Page 4

Replacement of a 770 rack power supply module
If the ‘FAULT’ indicator is red or all the indicator lights are o on a power supply module, then the unit should be
swapped out. This must be carried out by suitably qualied service personnel. Follow the swap-out instructions
provided with the new power supply module.
In a rack with dual redundant power supplies, a single power supply module swap-out can be done without aecting
the operation of the ‘blades’ in the rack. With a single 771 PSU equipped rack, a power supply swap-out will cause all
the ‘blades’ to be powered down which will result in a loss of IP video feeds or other services from this rack. Replacing
a (partially working) 771 PSU module may therefore need to be scheduled outside normal working hours or with a
suitable notication of the temporary disruption of service.
Please contact Cabletime or your equipment supplier to obtain a replacement 771 or 726 power supply module.
Installing processor module ‘blades’ in the 770 Rack
Any combination of MediaStar processor module ‘blades’ can be installed in a 770 rack. Modules may be installed
with the rack power on or o. If modules are inserted or removed with the power on, care must be taken to ensure
they are correctly aligned in the rack guides before sliding them in.
If the 770 rack is to be powered down to install a new processor module, remember that all the services being
provided by the ‘blades’ in that rack enclosure will be lost while it is powered down. Electrical static discharge
precautions should be taken when handling all ‘blades’.
To install a new ‘blade’, do the following:
1. Remove the blue blanking panel from the front of the rack. This is done by unscrewing the top and bottom
thumbscrew fasteners.
2. Take the new ‘blade’ from its packaging observing anti-static precautions. Touch only the edges of the printed
circuit board (PCB) or the metal case.
3. Carefully locate the top and bottom edge of the 'blade's' printed circuit board (PCB) into the plastic rack slides,
and gently push the module in. Care must be taken to ensure both PCB edges are located in the slides correctly.
As the module reaches the back of the rack, a plastic aperture cover on the rear of the rack will be pushed o by
the module’s connectors. Collect the discarded aperture cover.
4. If the rack is powered, the new ‘blade’ will automatically power up as it is pushed in. Indicators on the front of the
module will be illuminated appropriately.
5. Tighten the top and bottom thumbscrew fasteners to hold the module in the rack.
6. Connect the appropriate video, HDMI or RF input/output cables to the ‘blade’ connectors protruding from the rear
of the rack. Connect the appropriate network and control interface cables on the front.
7. Congure the ‘blade’ according to its own instructions.
Removing processor module ‘blades’ from the 770 rack
To remove a ‘blade’ processor card from the 770 rack:
1. Remove all the connection cables from the front and rear of the ‘blade’. Setting the location LED ashing on the
appropriate blade can help identify the correct unit from the rear of the rack.
2. Unscrew the top and bottom thumbscrew fasteners on the front panel of the processor module.
3. Withdraw the processor module from the rack taking care not to touch adjacent cards. Avoid touching the
exposed electronic components to prevent damage from static electricity discharges. Store the processor module
in an electrostatic proof bag.
4. Replace the original blue front panel cover that was supplied with the rack. Cover over the rear panel aperture
with adhesive tape to maintain the cooling airow within the rack. Spare front covers can be purchased from
Cabletime or your reseller if necessary.
Quick Start Guide
770 Rack Installation Guide
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