Hardware manual

Troubleshooting 5
Agilent 7500 Series ICP-MS Hardware Manual 5-31
• Fault in the wiring of the Shunt capacitor drive motor or the potentiometer.
• Faulty MNBXYZ Board.
1210 Error: RF amp FET drain current is too high.
The output of the FET drain current of the plasma RF amps exceed the limit.
Check the plasma RF amp output FET drain current, the plasma RF forward
power, the reflected power, the argon gas line pressure, and flow rate. When
the Plasma RF Reflected Power is high, reduce the Reflected Power by using the
automatic adjustment (Tune >> RF Matching on Tuning Window). The following
causes are inferred.
• The installation of torch, bonnet, and shield plate is faulty.
• The Argon gas is not supplied or there is a leak in the gas line.
• 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 the 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.
• Faulty plasma RF generator
1211* Error: RF Feedback error.
The power control of the plasma RF generator does not work properly. It is
possible that the plasma RF generator is faulty.