Motorola APX 2000 Detailed Service Manual

Chapter 8 Schematics, Boards Overlays, and Parts Lists
This chapter contains the schematics, board overlays, and parts lists
for the APX 1000 radio. Use them in conjunction with the theory of
operation and the troubleshooting procedures, charts, and waveforms
to isolate a problem to the component level.
When schematics are viewed on line or as a PDF file, colors can be
seen that denote power and signal paths. The red color denotes
voltage paths, blue denotes the receive path, and green denotes the
transmit path.
The following tables list the pages where the schematics and board
overlays for the APX 1000 radio are found.
8.1 List of Transceiver Schematics and Board
Overlays
Table 8-1. List of Transceiver Schematics and Board Overlays
Transceiver Board Schematic/Board Layout Page No.
VHF: 84012618001
Transceiver (RF) Mainboard Overall Schematic 8-29
Controller Mainboard Circuit 8-30
DC Circuit 8-31
Receiver Back End Circuit 8-32
Receiver Front End Circuit 8-33
ANTSWI Circuit 8-34
Automatic Level Control Circuit 8-35
Receiver Back End Circuit 8-36
Trident Frequency Generation Unit 8-37
Buffer Frequency Generation Unit 8-38
Power Amplifier Circuit 8-39
Transmitter HF Circuit 8-40
Receiver VCO Circuit 8-41
Transmitter VCO Circuit 8-42
CPLD Circuit 8-43
OMAP User Interface Circuit 8-44
Memory Interface Circuit 8-45
Audio Circuit 8-46
MAKO/DC Distribution Circuit 8-47
Serial Interface Circuit 8-48
RF Interconnects Circuit 8-49
Controller Circuit 8-50
Display/Keypad Lighting Control Circuit 8-51
LCD and Keypad Connector Circuit 8-52
GCAI MACE BT Interconnect Circuit 8-53
GPS Circuit 8-54
Transceiver (RF) Board Layout – Top Side 8-55
Transceiver (RF) Board Layout – Bottom Side 8-56
UHF1: 84012620001
Transceiver (RF) Mainboard Overall Schematic 8-90
Controller Mainboard Circuit 8-91
DC Circuit 8-92
Receiver Back End Circuit 8-93
Receiver Front End Circuit 8-94
ANTSWI Circuit 8-95
Automatic Level Control Circuit 8-96
Receiver Back End Circuit 8-97
Frequency Generation Unit Circuit – 1 of 2 8-98
Frequency Generation Unit Circuit – 2 of 2 8-99
Power AmplifierCircuit 8-100
Transmitter HF Circuit 8-101
Receiver VCO Circuit 8-102
Transmitter VCO Circuit 8-103
CPLD Circuit 8-104
Table 8-1. List of Transceiver Schematics and Board Overlays (Continued)
Transceiver Board Schematic/Board Layout Page No.
OMAP User Interface Circuit 8-105
Memory Interface Circuit 8-106
Audio Circuit 8-107
MAKO/DC Distribution Circuit 8-108
Serial Interface Circuit 8-109
RF Interconnects Circuit 8-110
Controller Circuit 8-111
Display/Keypad Lighting Control Circuit 8-112
LCD and Keypad Connector Circuit 8-113
GCAI MACE BT Interconnect Circuit 8-114
GPS Circuit 8-115
Transceiver (RF) Board Layout – Top Side 8-116
Transceiver (RF) Board Layout – Bottom Side 8-117
UHF2: 84012621001
Transceiver (RF) Mainboard Overall Schematic 8-137
Controller Mainboard Circuit 8-138
DC Circuit 8-139
Receiver Back End Circuit 8-140
Receiver Front End Circuit 8-141
ANTSWI Circuit 8-142
Automatic Level Control Circuit 8-143
Receiver Back End Circuit 8-144
Trident Frequency Generation Unit 8-145
Buffer Frequency Generation Unit 8-146
Power Amplifier Circuit 8-147
Transmitter HF Circuit 8-148
Receiver VCO Circuit 8-149
Transmitter VCO Circuit 8-150
Table 8-1. List of Transceiver Schematics and Board Overlays (Continued)
Transceiver Board Schematic/Board Layout Page No.

Motorola APX 2000 Specifications

General

Brand	Motorola
Model	APX 2000
Category	Two-Way Radio
Language	English