Rohde & Schwarz SMB100A - Fan Does Not Work

R&S SMB Troubleshooting
1407.0806.82 3.11 E-6
• Error: Fan does not work
D
escription of error
P
ossible error causes and further steps
Fan does not work
Disconnect fan and check voltage on BASIS BOARD
X116 (fan connector) between pin 1 and 2 (see Fig. 3-3):
Rated voltage:8 V … 13 V, depending on temperature.
Correct voltage: Replace fan
Faulty voltage: Check the power supply of the Basis
Board (see page 3.21).
Fig. 3-3 X116 Fan Connector Pin Location (left: 1406.6700.05, right: 1406.6600.02)