User Guide

6015/6015i/6016i/6019i (RH-55), 6012 (RM-20)

Troubleshooting - RF Nokia Customer Care

Receiver Logic Input Voltages

Following are the measure logic levels for the RX front end (N750). See Figure 22 on

page 29 for the manual selection of logic states using Phoenix.

Table 7 includes the logic level values for the RX front end.

If the logic levels are significantly off (+/- 0.2 V), replace Alfred (N750) and re-measure.

If the voltages are still out of specifications, refer to the Baseband Troubleshooting

chapter.

Table 7: RX Front-end (N750) Logic Levels

Mode

Logic Input Voltages

IF_SEL BAND GAIN_CTL

Cell CDMA High Gain 0 V 0.1 V 2.75 V

Cell CDMA Low Gain 0 V 0.1 V 0 V

PCS CDMA High Gain 0 V 2.68 V 2.75 V

PCS CDMA Low Gain 0 V 2.68 V 0 V

AMPS High Gain 2.76 V 0.1 V 2.76 V

AMPS Low Gain 2.76 V 0.1 V 0 V