R&S ZVB Instrument Construction and Function Description
1145.1078.82 3.49 E-4
Replacing the Reflectometer Fan
(
See Chapter 5, Spare Parts List, Item 80, 190 and drawings 1145.1010, 1145.3664, 1145.4277)
Remove the Reflectometer (see chapter Replacing a Reflectometer RMxx A510 to A540)
Replacing the fan
Disconnect the fan cable at the reflectometer.
Undo the 4 holding screws (90,194) and remove the fan.
Insert the new fan (cable outlet to the outside).
Screw back the 4 screws (90, 194) and washers (100, 192, 193).
Reassembling the instrument
Reinstall the Reflectometer (see chapter Replacing a Reflectometer RMxx A510 to A540)
Connect the mains cable, turn on at the mains switch and press the ON key.
Check that the fan is operating.
Turn off the instrument again and disconnect from the mains.
Fit the instrument base cover (297) and secure with 12 countersunk screws (299).
Push the enclosure (400) back on and screw the 4 rear-panel feet (460) into position.
Reconnect the mains cable and turn on at the mains switch. The instrument is now in the standby
mode.
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