Chapter 2 Radio Power
This chapter provides a detailed circuit description of the power distribution of an ASTRO APX 2000/
APX 4000/ APX 4000Li/ APX 1000 (900 MHz) radio.
2.1
General
In the ASTRO APX 2000/ APX 4000/ APX 4000Li/ APX 1000 (900 MHz) radio, power (B+) is
distributed to two boards: the main board and the keypad board (
see Figure 2-1 on page 2-2
).
Power for the radio is provided through a battery supplying a nominal 7.5 Vdc directly to the
transceiver. The following battery types and capacities are available:
Table 2-1. IMPRES Batteries
Part Number
Description
NNTN8128_
APX 2000 IMPRES Li Ion Battery Slim (1900 mAH)
NNTN8129_
APX 2000 IMPRES Li Ion High Cap Battery (FM, 2300 mAH)
PMNN4424_
APX 2000 IMPRES Li Ion High Cap Battery (2300 mAH)
NNTN8560_*
APX 2000 IMPRES Li Ion High Cap Battery (TIA4950, 2500 mAH)
Note:
* = Applicable to APX 2000/ APX 4000 (Two Knobs) only.
Summary of Contents for APX 2000
Page 1: ...APXTM TWO WAY RADIOS APX 1000 APX 2000 APX 4000 APX 4000Li DETAILED SERVICE MANUAL ...
Page 4: ......
Page 6: ...iv Document History Notes ...
Page 8: ...Notes vi Commercial Warranty ...
Page 10: ...Notes ...
Page 22: ...xiv List of Figures Notes ...
Page 226: ...6 64 Troubleshooting Waveforms LF CW on Spectrum Analyzer Notes ...
Page 688: ...Index 4 Index Notes ...
Page 690: ...ii Notes ...
Page 700: ...xvi List of Figures Notes ...
Page 806: ...5 50 Troubleshooting Charts PA Failure Notes ...
Page 1008: ...8 178 Schematics Boards Overlays and Parts Lists Transceiver RF Boards UHF2 84012621001 Notes ...
Page 1062: ...8 234 Schematics Boards Overlays and Parts Lists Keypad Board M2 and M3 PC000261A01 Notes ...
Page 1064: ...ii Notes ...
Page 1068: ...Notes A 4 EMEA Warranty Service and Technical Support Further Assistance From Motorola ...
Page 1090: ...Glossary 10 Glossary Notes ...
Page 1094: ...Index 4 Index Notes ...
Page 1095: ......