Motorola APX 2000, Detailed Service Manual

Page: 281 / 1096

Chapter 8 Schematics, Boards Overlays, and Parts Lists
This chapter contains the schematics, board overlays, and parts lists
for the APX 2000/ APX 4000/ APX 1000 (900 MHz) 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 2000/ APX 4000/ APX 1000 (900 MHz) 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 : 84012320001 (APX 2000/ APX 4000/ APX 4000Li) /
PC000352A01 (APX 2000/ APX 4000 (Two Knobs))
Transceiver (RF) Mainboard Overall Schematic (84012320001) 8-29
Transceiver (RF) Mainboard Overall Schematic (PC000352A01)
– 1 of 2 8-30
Transceiver (RF) Mainboard Overall Schematic (PC000352A01)
– 2 of 2
8-31
Controller Mainboard Circuit 8-32
ANTSWI Circuit
8-33
TX HF Circuit
8-34
Power Amplifier (PA) Circuit 8-35
Automatic Level Control Circuit 8-36
Receiver Front End Circuit
8-37
Receiver Back End Circuit – 1 of 2
8-38
Receiver Back End Circuit – 2 of 2 8-39
Receiver VCO Circuit 8-40
Transmitter VCO Circuit
8-41
DC Circuit
8-42
RF Interconnects Circuit 8-43
CPLD Circuit
8-44
OMAP User Interface Circuit
8-45
Memory Interface Circuit (84012320001) 8-46
Memory Interface Circuit (PC000352A01) 8-47
Audio Circuit (84012320001)
8-48
Audio Circuit (PC000352A01)
8-49
MAKO/DC Distribution Circuit (84012320001) 8-50
MAKO/DC Distribution Circuit (PC000352A01) 8-51
Serial Interface Circuit
8-52
GPS Bluetooth Circuit
8-53
Controller Circuit (84012320001) 8-54
Controller Circuit (PC000352A01) 8-55
Display/Keypad Lighting Control Circuit (84012320001)
8-56
Display/Keypad Lighting Control Circuit (PC000352A01)
8-57
LCD and Keypad Connector Circuit (84012320001) 8-58
LCD and Keypad Connector Circuit (PC000352A01) 8-59
GCAI MACE BT Interconnect Circuit (84012320001)
8-60
GCAI MACE BT Interconnect Circuit (PC000352A01)
8-61
Frequency Generation Unit Circuit – 1 of 2 8-62
Frequency Generation Unit Circuit – 2 of 2 8-63
Transceiver (RF) Board Layout – Top Side (84012320001)
8-64
Transceiver (RF) Board Layout – Bottom Side (84012320001)
8-65
Transceiver (RF) Board Layout – Top Side (PC000352A01) 8-66
Transceiver (RF) Board Layout – Bottom Side (PC000352A01) 8-67
UHF1: 84012313002 (APX 2000/ APX 4000/ APX 4000Li) /
PC000353A01 (APX 2000/ APX 4000 (Two Knobs))
Transceiver (RF) Mainboard Overall Schematic (84012313002)
8-107
Table 8-1. List of Transceiver Schematics and Board Overlays (Continued)
Transceiver Board Schematic/Board Layout Page No.
Transceiver (RF) Mainboard Overall Schematic (PC000353A01)
– 1 of 2 8-108
Transceiver (RF) Mainboard Overall Schematic (PC000353A01)
– 2 of 2
8-109
Controller Mainboard Circuit 8-110
DC Circuit
8-111
Receiver Back End Circuit
8-112
Receiver Front End Circuit 8-113
ANTSWI Circuit 8-114
Automatic Level Control Circuit
8-115
Receiver Back End Circuit
8-116
Frequency Generation Unit Circuit – 1 of 2 8-117
Frequency Generation Unit Circuit – 2 of 2 8-118
Power AmplifierCircuit
8-119
Transmitter HF Circuit
8-120
Receiver VCO Circuit 8-121
Transmitter VCO Circuit 8-122
CPLD Circuit
8-123
OMAP User Interface Circuit
8-124
Memory Interface Circuit (84012313002) 8-125
Memory Interface Circuit (PC000353A01) 8-126
Audio Circuit (84012313002)
8-127
Audio Circuit (PC000353A01)
8-128
MAKO/DC Distribution Circuit (84012313002) 8-129
MAKO/DC Distribution Circuit (PC000353A01) 8-130
Serial Interface Circuit
8-131
RF Interconnects Circuit
8-132
Controller Circuit (84012313002) 8-133
Controller Circuit (PC000353A01) 8-134
Table 8-1. List of Transceiver Schematics and Board Overlays (Continued)
Transceiver Board Schematic/Board Layout Page No.