Main Circuit Board Rf Shield Locations; Table 7.4-3. Main Circuit Board Side 1 Rf Shields - Motorola XTS 2500 Service Manual

7.4-4
Table 7.4-2. RF Block Diagram Probe/Test Points (Continued)
PP/TP Name
36 Abacus Chip Select
37 RX SSI Data
38 RX SSI Clock
39 RX SSI Frame Sync
40 Rx SSI Sync B
PP = Probe Point
TP = Test Point
Note: For test/probe points indicated with the SH prefix, use an HP 85024A High Frequency Probe to detect a
signal. The probe should be placed in center of the hole located on the top of the shield. Make sure the probe does
not touch the shield or any other components.

7.4.4 Main Circuit Board RF Shield Locations

Viewed from Side 1
Item
Number
February 14, 2012
700/800 MHz Troubleshooting Waveforms: Main Circuit Board RF Shield Locations
6
2
5

Table 7.4-3. Main Circuit Board Side 1 RF Shields

Reference Motorola Part
Number
1 SH401
2 SH201
3 SH103
4 SH104
5 SH205
6 SH204
Location
U401, pin 25
TP403
TP404
TP402
TP401
* C261 for LO Output
C266 for TX Output
C236 for Preselector Output
1
4
Description
Number
2685089D01 Shield, ABACUS
2685081D01 Shield, Synthesizer
2685083D01 Shield, Harmonic Top
2685085D01 Shield, PA
2685086D01 Shield, VCO Top
2685241D01 Shield, DAC
Under RF
Page
Shield?
Yes. 7.4-46
No. 7.4-47
No. 7.4-48
No. 7.4-49
No. 7.4-50
3
MAEPF-27489-O
6816985H01-F