Grass Valley 7600REF - Manual (Page 26)

26 7600 SD/HD/MHD-REF — Instruction Manual
Installation
AC Mains Connection and Fusing
CAUTION The power supply cord is used as the main power disconnection device.
Ensure that the socket outlet is located/installed near the equipment and is
easily accessible.
ATTENTION Le cordon d’alimentation est utilisé comme interrupteur général. La prise de
courant doit être située ou installée à proximité de l’équipement et être facile
d’accés.
Each 7600REF model is fitted with two independent AC mains power sup-
plies. Each power supply has its own dedicated IEC mains plug on the rear
of the unit.
The correct power cords for the line standard of the region the product has
been shipped to are included in the shipping box. The power supplies used
in this the unit are a switch mode design and are auto-sensing to handle a
wide input voltage range. See
Power (page 79) in the Specifications table
for the voltage and frequency ranges.
Power Supply Replacement
If one of the power supplies fails, a replacement unit can be acquired from
Customer Service and can be installed by the customer in the field.
To replace a 7600REF power supply:
CAUTION Make sure power to the unit is completely disconnected by removing both AC
cords from both power supply connections on the rear of the unit.
1. Remove the top cover of the frame by removing the 13 screws holding
the cover to the frame. Determine which power supply unit needs to be
replaced.
2. Tilt the frame up and on the bottom of the frame remove the two screws
holding the defective power supply unit to the frame chassis.
3. On the front of the power supply unit, remove the 2-pin connector
labeled J1 coming from the AC Main assembly. Note the orientation of
the connector when removing it.
4. On the rear of the power supply unit, remove the 4-pin rear connector
labeled J2 from the power supply attached to the cable coming from the
rear of the main circuit board. Note the orientation of the connector
when removing it.
5. Lift the defective power supply out of the chassis.
6. Install the new unit by reversing the steps above noting cable connector
orientation. These connectors are keyed so they cannot be installed
improperly.