R&S FSP Module Replacement
1164.4556.82 3.29 E-1
Replacing the Fan
(See chapter 5, spare parts list, item 15, and explosion drawings 1164.4391.)
The fan is fitted at the right side of the frame.
Opening the Instrument and Removing the Fan
Switch off the instrument, pull the mains plug, unscrew the 4 rear-panel feet (450) and push the tube
(410) backwards and take off.
Unscrew the two countersunk screws (260) at the top of the instrument and the three countersunk
screws (250) at the fan side, lift the cover at the top (240) of the instrument to the left side and take
off.
Disconnect the fan cable at the motherboard connector X35 (FAN) .
Unscrew the four screws off the FAN (15) and remove the fan.
Installing the New Fan and Completing the Instrument
Connect the fan cable at the motherboard connector X35 (FAN)
Insert the new fan and mount it to the frame with 4 pieces fan screws.
Note: Please note the direction of the airflow printed on the fan. The fan must blow the cold air
into the instrument.
Make sure to route the cables with enough space to the fan.
Put the top cover (240) on the instrument and mount it with two countersunk screws (260) and three
countersunk screws (250).
Push the tube (410) on the instrument and mount the 4 rear-panel feet (450).
Connect the instrument to the mains, switch on the instrument power switch and switch on the
instrument with the ON/STANDBY key
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