Hardware manual
5-32 Agilent 7500 Series ICP-MS Hardware Manual
5 Troubleshooting
1211* Error: DC/DC converter (24/12V) of RF generator malfunction.
The DC/DC converter of the plasma RF generator does not work properly.
Check the output voltage of the DC/DC converter (Local 12V) of the plasma RF
generator. It is possible that the plasma RF driver board is faulty.
1212 Error: RF48V power voltage is too high.
The voltage of RF 48V exceeds the limit.
Check the voltage of RF 48V power supply. RF 48V is supplied with S24V. The
following causes are inferred.
• Faulty Power Supply
• Faulty RF generator
1213 Error: RF48V power voltage is too low.
The voltage of RF 48V drops below the limit.
Check the voltage of RF 48V power supply. RF 48V is supplied with S24V. The
following causes are inferred.
• The hood is opened in the Analysis Mode.
• The plasma is turned off suddenly.
• Faulty Power Supply
• Faulty RF generator
1214 Error: RF amp FET over temperature.
Output FET temperature exceeds the limit.
Check plasma RF amp temperature, plasma RF cooling water flow rate, plasma
RF forward power, reflected power, argon gas line pressure and flow rate. The
following causes are inferred.
• A shortage of the cooling water flow rate, thus, increasing the temperature
of the cooling water
• The air is mixed with argon gas.
• The limits of the tuning parameters for the RF Matching are inappropriate.
• The limits of the system parameters for Shunt condenser and Series
condenser- related items are inappropriate.
• The Plasma RF cable came off or the cables are defective.
• Malfunction of the Shunt condenser and Series condenser. (A faulty XYZMN
Board is also probable.), faulty Matching network.
• The installation of the plasma RF generator output FET is faulty (the
conducive heat compound is degraded).
• Faulty plasma RF generator.
1215* Error: RF Drain voltage is too high.
The output of the FET drain voltage of the plasma RF amps exceed the limit.
When the Plasma RF Reflected Power is high, reduce the Reflected Power by
using the automatic adjustment (Tune >> RF Matching on Tuning Window).