Motorola GP88s - Page 13

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Controller ASFIC/ON_OFF Schematic Diagram .................................................... 7-6
Controller Micro Processor Schematic Diagram .................................................... 7-7
Controller Memory Schematic Diagram ................................................................. 7-8
Controller Audio Power Amplifier Schematic Diagram ........................................... 7-9
Controller Interface Schematic Diagram .............................................................. 7-10
3.4 Controller Schematics (403-470MHz for 8480672Z04, Z06 & 136-174MHz for
8480675Z03, Z04)7-11
Complete Controller Schematic Diagram ............................................................. 7-11
Controller ASFIC/ON_OFF Schematic Diagram .................................................. 7-12
Controller Micro Processor Schematic Diagram .................................................. 7-13
Controller Memory Schematic Diagram ............................................................... 7-14
Controller Audio Power Amplifier Schematic Diagram ......................................... 7-15
Controller Interface Schematic Diagram .............................................................. 7-16
Section 8 Keypad Board Information
1.0 Theory of Operation............................................................................................. 8-1
2.0 Troubleshooting Chart ......................................................................................... 8-1
3.0 Parts List (Keypad) .............................................................................................. 8-2
4.0 Keypad Board And Schematic Diagram .............................................................. 8-3
Keypad Board Top and Bottom View (PCB No. 8485642Z01)............................... 8-3
Keypad Board Schematic Diagram ........................................................................ 8-4
Section 9A Model Chart and Test Specifications (403-470 MHz)
1.0 Model Chart .......................................................................................................9A-1
2.0 Specifications.....................................................................................................9A-2
3.0 Transmitter.........................................................................................................9A-3
3.1 General.........................................................................................................9A-3
4.0 Receiver.............................................................................................................9A-5
4.1 Receiver Front-End ......................................................................................9A-5
4.2 Receiver Back-End.......................................................................................9A-6
4.3 Automatic Gain Control Circuit .....................................................................9A-7
5.0 Frequency Generation Circuitry.........................................................................9A-8
5.1 Synthesizer...................................................................................................9A-9
5.2 VCO - Voltage Controlled Oscillator...........................................................9A-10
6.0 Notes For All Schematics and Circuit Boards..................................................9A-12
7.0 Circuit Board/Schematic Diagrams and Parts List...........................................9A-13
UHF (403-470MHz) Main Board Top Side PCB No. 8480672Z01 .....................9A-13
UHF (403-470MHz) Main Board Bottom Side PCB No. 8480672Z01................9A-14
UHF Controls And Switches Schematic Diagram ..............................................9A-15
UHF Receiver Front End Schematic Diagram....................................................9A-16
UHF Receiver Back End Schematic Diagram ....................................................9A-17
UHF Synthesizer Schematic Diagram................................................................9A-18
UHF Voltage Controlled Oscillator Schematic Diagram .....................................9A-19