6816985H01-F February 14, 2012
700/800 MHz Troubleshooting Waveforms: RF Test Points 7.4-3
Table 7.4-2. RF Block Diagram Probe/Test Points
PP/TP Name Location
Under RF
Shield?
Page
1 Antenna Input J101, pin 5 No. 7.4-6
2 TX Signal at Harmonic Filter Input C105 Yes. 7.4-7
3 Coupler RF Out U103, pin 1 No. 7.4-8
4 TX Signal at PA Q101, pin 2 No. 7.4-9
5 Coupler RF Feedback to PCIC TP102 No. 7.4-10
6 PCIC Control Voltage TP101 No. 7.4-11
7 TX LO Tx_inj No. 7.4-12
8 Higher Level Voltage Multiplier C207 Yes. 7.4-13
9 Superfilter Output C240 Yes. 7.4-14
10 TRB TP001 No. 7.4-15
11 Prescalar Input to FracN Synthesizer C236 Yes. 7.4-16
12 Reference Crystal Output C243, C293 No. 7.4-17
13 Mod In TP203 No. 7.4-18
14 1st LO Control Voltage TP202 No. 7.4-19
15 VCO Output * Yes. 7.4-20
16 VCO RX LO C261 Yes. 7.4-21
17 Frequency Out (16.8 MHz) C293 No. 7.4-22
18 RX RF Input at Antenna Switch FL1, pin 1 No. 7.4-23
19 Antenna Switch Bias U103, pin 1 No. 7.4-24
20 Preselector Tuning Voltage FL1, pin 3; FL2, pin 3 No. 7.4-25
21 RX RF Input after Antenna Switch FL1, pin 1 No. 7.4-26
22 Analog 5V U500, pin 5 No. 7.4-27
23 Preselector 1 Output FL1, pin 2 No. 7.4-28
24 Low-Noise Amplifier Output FL2, pin 1 No. 7.4-29
25 Preselector 2 Output FL2, pin 2 No. 7.4-30
26 Mixer Out (IF) U1, PIN ? No. 7.4-31
27 Crystal Filter Out FL3, PIN ? No. 7.4-32
28 Abacus Analog 3V U501, pin 5 No. 7.4-33
29 2nd LO Control Voltage U401, pin 38 Yes. 7.4-34
30 2nd LO VCO Buffer Output C407? No. 7.4-35
31 Analog 5V U500, pin 5 No. 7.4-36
32 Abacus Digital 3V U502, pin 5 No. 7.4-37
33 SPI Data R802 No. 7.4-43
34 SPI CLK R803 No. 7.4-44
35 Universal Chip Select U102, pin 29 Yes. 7.4-45
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