R&S FSH Troubleshooting
1145.5973.82 3.23 E-11
• Error: Display has erroneous colours and characters.
Troubleshooting procedure Possible cause of error and further steps
Open the instrument and check X5 and X6
(LCD data).
Data connection broken, or circuitry on the mainboard
defective.
Connect again, or replace the mainboard or LCD colour
module
• Error: Frequency response not compliant with specification.
This response can only be corrected at the service center. Replace the RF/IF module.
• Error: Level display very noisy.
Troubleshooting procedure Possible cause of error and further steps
Check the N connector.
The N connector is soiled.
Clean or replace the N connector.
Replace the RF/IF module.
• Error: Several keys on the keypad do not respond.
Troubleshooting procedure Possible cause of error and further steps
Check X3.
The connection is not operational or the keypad is
broken.
Correct the connection, or replace the front unit.
• Error: Power sensor does not respond properly.
Troubleshooting procedure Possible cause of error and further steps
Check X8 and X10.
The connection is not operating correctly, the binder
connector is broken, the mainboard is broken, or the
cables are broken.
Correct the connection.
Replace the binder and BNC connector block.
Replace the mainboard.
Replace any broken cable in the cable set.
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