Hardware manual

Troubleshooting 5
Agilent 7500 Series ICP-MS Hardware Manual 5-35
• The air is mixed with argon gas.
• 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).
• Power cable to the plasma RF generator came off.
• Faulty plasma RF generator
1220 Error: Plasma was shut off during Analysis. (Vac)
The plasma has extinguished (In Analysis Mode or during Maintenance).
Check the argon gas line pressure and flow rate. The following causes are
inferred.
• 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 is mixed with argon gas.
• The limits of the tuning parameters for the RF Matching 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).
• Power cable to the plasma RF generator came off.
• Faulty plasma RF generator.
• Faulty DC Power Supply.
1221* Error: RF Cable Connection error.
The cable in the RF generator is not connected or damaged connector.
1221* Error: Directional coupler (DCP) feedback cable is open.
The directional coupler is not connected or there are faults in the directional
coupler/ plasma RF driver board.
1222 Error: Large or small top Cover opened.
Either of the top covers of the instrument is not closed completely.
1223 Error: RF Drain voltage is too low.
The output of the FET drain voltage of the RF generator went below the limit.
The following causes are inferred.
• The hood is opened in Analysis Mode.
• The plasma is turned off suddenly.
• Faulty RF generator
1226 Error: RF amp fan malfunction.
The number of revolutions of the plasma RF generator cooling fan went below
the limit.
Check the number of the revolutions of the plasma RF generator cooling fan.
Either the cooling fan, cooling fan wiring, or plasma RF board is abnormal.