Motorola HT 1000 Transceiver Controller Schematic and Circuit Board Notes, Circuit Board Layers

Component Location

Diagrams, Parts Lists, and

Schematic Diagrams

9

Introduction

General

Transceiver components and controller components reside on separate circuit boards. Refer to the model charts located in the front of this manual (prior to Section 1) to determine the controller board and transceiver board unique to your model radio. Then locate the appropriate transceiver board and controller board component location diagram, schematic diagram, and parts list located in this section of the manual.

Component location diagrams of the controls flex, two front cover/ display flexes, and the strip connector are also located in this section. A miscellaneous parts list accompanies the flex circuits.

Almost all circuit boards in this family of radios are either six or eight layers. Layer 1 is the outer most layer viewed from side 1, and layer 6 or 8 (as applicable) is the outer most layer viewed from sine 2. A typical 8-layer circuit board detail, viewing copper steps in proper layer sequence, is illustrated in Figure 18.

SIDE 1

LAYER 1 (L1)

LAYER 2 (L2)

LAYER 3 (L3)

LAYER 4 (L4)

LAYER 5 (L5)

LAYER 6 (L6)

INNER LAYERS

Transceiver

Controller

Schematic and Circuit Board Notes

LAYER 7 (L7)

LAYER 8 (L8)

SIDE 2

Figure 18. Circuit Board Layers MAEPF-18828-A

Frequently, transceivers that use a common transceiver board will be combined into one component location diagram, one schematic diagram, and one parts list. The differences between transceivers will be noted throughout the applicable parts list.

Frequently, controllers that use a common controller board will be combined into one component location diagram, one schematic diagram, and one parts list. The differences between controllers will be noted throughout the applicable parts list.

Most all of the schematic diagrams in this manual include specific notes. Typically the notes are colored red to make them stand-out

57