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Troubleshooting
Interpreting Diagnostic Fault Codes
5
5-21
3327 A9/A10: 1 Kilohm Check Fault
The Current assembly (A7) outputs 1.3 mA which is routed to the Ohms Main assembly
(A10), via INT OUT HI, where it is connected to the 1 kΩ string. The voltage drop
across the 1 kΩ string is measured for 1.3V ±3% ±15 mV. A failure indicates the Ohms
Main assembly is probably at fault.
3328 A9/A10: 1.9 Kilohm Check Fault
The Current assembly (A7) outputs 1.3 mA which is routed to the Ohms Main assembly
(A10), via INT OUT HI, where it is connected to the 1.9 kΩ string. The voltage drop
across the 1.9 kΩ string is measured for 2.47V ±3% ±15 mV. A failure indicates the
Ohms Main assembly (A10) is probably at fault.
3329 A9/A10: 100 Ohm Check Fault
The Current assembly (A7) outputs 13 mA which is routed to the Ohms Main assembly
(A10), via INT OUT HI, where it is connected to the 100Ω string. The voltage drop
across the 100Ω string is measured for 1.3V ±3% ±15 mV. A failure indicates the Ohms
Main assembly is probably at fault.
3330 A9/A10: 190 Ohm Check Fault
The Current assembly (A7) outputs 13 mA which is routed to the Ohms Main assembly
(A10), via INT OUT HI, where it is connected to the 190Ω string. The voltage drop
across the 190Ω string is measured for 2.47V ±3% ±15mV. A failure indicates the Ohms
Main assembly (A10) is probably at fault.
3331 A9/A10: 10 Ohm Check Fault
The Current assembly (A7) outputs 130 mA which is routed to the Ohms Main assembly
(A10), via INT OUT HI, where it is connected to the 10 Ohm resistance. The voltage
drop across the 10Ω resistance is measured for 1.3V ±3% ±15 mV. A failure indicates
the Ohms Main assembly is probably at fault.
3332 A9/A10: 19 Ohm Check Fault
The Current assembly (A7) outputs 130 mA which is routed to the Ohms Main assembly
(A10), via INT OUT HI, where it is connected to the 19Ω resistance. The voltage drop
across the 19Ω string is measured for 2.47V ±3% ±15 mV. A failure indicates the Ohms
Main assembly is probably at fault.
3333 A9/A10: 1 Ohm Check Fault
The Current assembly (A7) outputs 130 mA which is routed through the Ohms Main
assembly (A10), via INT OUT HI, to the Ohms Cal assembly (A9) where it is connected
to the 1Ω resistance. The voltage drop across the 1Ω resistance is measured for 0.13V
±3% ±15 mV. A failure indicates the Ohms Cal assembly is probably at fault.