User Guide

Nokia Customer Care Troubleshooting Instructions

Company confidential NPL-4/5

Check difference of offset strap coil

- difference of measured values must be range of 320 to 420digit for both channels

Check Set/Reset pulses and VBridge voltage

- measure with oscilloscope

- S/R pulses and Vbridge voltages are active only during the measurement phase

Check measurement bridges output voltages

- Voltages referred to ground must be near 1.1V and difference signal 0.0V