Nokia NPL-4 Series Troubleshooting Instructions page 95

Company confidential NPL-4/5/
Nokia Customer Care Troubleshooting Instructions
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
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Issue 2 05/05 Page 95