Allocation Of Schematics And Circuit Boards; Uhf1 (403-440Mhz); Six Layer Circuit Board - Motorola CP160 Detailed Service Manual

1.0

Allocation of Schematics and Circuit Boards

1.1

UHF1 (403-440MHz)

The UHF1 circuits are contained on the printed circuit board (PCB) which also contains the
Controller circuits. This Chapter shows the schematics for the UHF circuits, the Controller circuits
are contained in Section 2 of this manual. The PCB component layouts and the Parts Lists in this
Chapter show both the Controller and UHF circuit components. The UHF schematics and the
related PCB and parts list are shown in the table below.
PCB :
SCHEMATICS
Parts List
1.2

Six Layer Circuit Board

The main PCB is a 6-layer circuit board, the copper steps are in the layer sequence shown below.
UHF1 PCB/SCHEMATICS/PARTS LISTS
Table 4-1 UHF1 Diagrams and Parts Lists
8486635Z03_O Main Board Top Side
8486635Z03_O Main Board Bottom Side
Radio Circuit Block Diagram
Receiver Front End
Receiver Back End
Synthesiser
VCO
Transmit and Power Control Cct
8486635Z03_O
SIDE 1
LAYER 1 (L1)
LAYER 2 (L2)
LAYER 3 (L3)
LAYER 4 (L4)
LAYER 5 (L5)
LAYER 6 (L6)
SIDE 2
Page 4-3
Page 4-4
Page 4-5
Page 4-6
Page 4-7
Page 4-8
Page 4-9
Page 4-10
Page 4-11
INNER LAYERS
Chapter 4