Hardware manual

Troubleshooting 5
Agilent 7500 Series ICP-MS Hardware Manual 5-33
Check the output of the FET drain voltage of the plasma RF amp, plasma RF
forward power, reflected power, argon gas line pressure, and flow rate. The
following causes are inferred.
• Poor connection of the RF amp directional coupler (connector comes off)
• The installation of the torch, bonnet, and shield plate is faulty.
• The Argon gas is not supplied or there is a leak in the gas line.
• The air or N2 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 capacitor and Series
capacitor - related items are inappropriate.
• The Plasma RF cable came off or the cables are defective.
• The malfunction of the Shunt capacitor and Series capacitor. (A faulty
XYZMN Board is also probable.), faulty Matching network.
• Faulty plasma RF generator
1215* Error: RF amp FET 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 Windows).
Check the output of the FET drain voltage of the plasma RF amp, plasma RF
forward power, reflected power, argon gas line pressure, and flow rate. The
following causes are inferred.
• Poor connection of the RF amp directional coupler (connector comes off).
• The installation of the torch, bonnet, and shield plate is faulty.
• The Argon gas is not supplied or there is a leak in the gas line.
• The air or N2 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 capacitor and Series
capacitor - related items are inappropriate.
• The Plasma RF cable came off or the cables are defective.
• The malfunction of the Shunt condenser and Series condenser (A faulty
XYZMN Board is also probable.), faulty Matching network.
• Faulty plasma RF generator.
1216 Error: RF power is unbalanced.
The Plasma RF amp output is unbalanced.
Check the plasma RF forward power, reflected power, argon gas line pressure,
and flow rate. The following causes are inferred.
• Poor connection of the RF amp directional coupler (the connector came
off).
• The installation of the torch, bonnet, and shield plate is faulty.
• Faulty plasma RF generator