Tektronix 2200 Manual Do Utilizador

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13. If this is a redundant power system:

a. You must replace the +5 Volt power assembly in the second Power 

Supply frame (if it is not a Todd supply) by repeating the 
procedures listed above.

b. Before applying power you must set the BYPASS/PROTECT 

jumper in the rack fan assembly as described in the Installation 
information in Section 2 of this manual.

c. When you have completed the installation (of both +5 Volt 

supplies, if required), reconnect the power source and apply power 
to both units.

Before you install the rear plates on the Power Supply frames, you must 
check the output voltages for load-sharing, as described in the Installation 
information in Section 2 of this manual.

There is a jumper on the small circuit board (064851) in the fan assembly at 
the top of the rack for Model 2200 Switchers. This jumper must be in the 
correct position for proper operation of these switchers.

1. Loosen the retaining screws of the fan assembly and pull the assembly 

out of the rack.

2. Check the position of the BYPASS/PROTECT jumper.

a. For the Todd +5 Volt power supplies, set the jumper to the BYPASS 

position. The Todd supplies have internal protection. They will not 
operate with the jumper in PROTECT mode.

b. For the Pioneer +5 Volt power supplies, set the jumper to the 

PROTECT position. The jumper, in PROTECT position, is intended 
to prevent a harmful surge should the Pioneer +5 V supply be 
accidentally shorted.