Motorola Gm Series Low Band Info Manual
Have a look at the manual Motorola Gm Series Low Band Info Manual online for free. It’s possible to download the document as PDF or print. UserManuals.tech offer 249 Motorola manuals and user’s guides for free. Share the user manual or guide on Facebook, Twitter or Google+.
Troubleshooting Flow Chart for VCO3-5
4.0 Troubleshooting Flow Chart for VCO
Low or no RF Signal
at U1051
Visual Check
of Board
OK?
8.5V DC
Pin 3
Chapter 4 LOW BAND PCB/SCHEMATICS/PARTS LISTS 1.0 Allocation of Schematics and Circuit Boards 1.1 Controller Circuits The Low Band circuits are contained on the printed circuit board (PCB) which also contains the Controller circuits. This Chapter shows the schematics for the Low Band circuits only, refer to the Controller section for details of the related Controller circuits . The PCB component layouts and the Parts Lists in this Chapter show both the Controller and Low Band circuit components. The Low Band schematics and the related PCB and parts list are shown in the tables below. Table 4-1 LB1 25-60W Diagrams and Parts Lists PCB : 8486206B06 Main Board Top Side 8486206B06 Main Board Bottom SidePage 4-5 Page 4-6 SCHEMATICS Power Amplifier 25-60W (Sheet 1 of 2) Power Amplifier 25-60W (Sheet 2 of 2) Voltage Controlled Oscillator Receiver Front End IF (Sheet 1 of 2) IF (Sheet 2 of 2) Noise Blanker FRACN Page 4-7 Page 4-8 Page 4-9 Page 4-10 Page 4-11 Page 4-12 Page 4-13 Page 4-14 Parts List 8486206B06 Page 4-15 Controller version is T6 Table 4-2 LB2 25-60W Diagrams and Parts Lists PCB : 8486207B05 Main Board Top Side 8486207B05 Main Board Bottom SidePage 4-18 Page 4-19 SCHEMATICS Power Amplifier 25-60W (Sheet 1 of 2) Power Amplifier 25-60W (Sheet 2 of 2) Voltage Controlled Oscillator Receiver Front End IF (Sheet 1 of 2) IF (Sheet 2 of 2) Noise Blanker FRACN Page 4-20 Page 4-21 Page 4-22 Page 4-23 Page 4-24 Page 4-25 Page 4-26 Page 4-27 Parts List 8486207B05 Page 4-28 Controller version is T6
4-2Low band pcb/schematics/parts lists Table 4-3 LB3 25-60W Diagrams and Parts Lists PCB : 8485908z03 Main Board Top Side 8485908z03 Main Board Bottom SidePage 4-31 Page 4-32 SCHEMATICS Power Amplifier 25-60W (Sheet 1 of 2) Power Amplifier 25-60W (Sheet 2 of 2) Voltage Controlled Oscillator Receiver Front End IF (Sheet 1 of 2) IF (Sheet 2 of 2) Noise Blanker FRACN Page 4-33 Page 4-34 Page 4-35 Page 4-36 Page 4-37 Page 4-38 Page 4-39 Page 4-40 Parts List 8485908z03 Page 4-41 Controller version is T9 Table 4-4 LB1 25-60W Diagrams and Parts Lists PCB : 8486206B08 Main Board Top Side 8486206B08 Main Board Bottom SidePage 4-44 Page 4-45 SCHEMATICS Power Amplifier 25-60W (Sheet 1 of 2) Power Amplifier 25-60W (Sheet 2 of 2) Voltage Controlled Oscillator Receiver Front End IF (Sheet 1 of 2) IF (Sheet 2 of 2) Noise Blanker FRACN Page 4-7 Page 4-8 Page 4-9 Page 4-10 Page 4-46 Page 4-47 Page 4-13 Page 4-14 Parts List 8486206B08 Page 4-48 Controller version is T11
Allocation of Schematics and Circuit Boards4-3 Table 4-5 LB2 25-60W Diagrams and Parts Lists PCB : 8486207B07 Main Board Top Side 8486207B07 Main Board Bottom SidePage 4-51 Page 4-52 SCHEMATICS Power Amplifier 25-60W (Sheet 1 of 2) Power Amplifier 25-60W (Sheet 2 of 2) Voltage Controlled Oscillator Receiver Front End IF (Sheet 1 of 2) IF (Sheet 2 of 2) Noise Blanker FRACN Page 4-20 Page 4-21 Page 4-22 Page 4-23 Page 4-46 Page 4-47 Page 4-26 Page 4-27 Parts List 8486207B07 Page 4-53 Controller version is T11 Table 4-6 LB3 25-60W Diagrams and Parts Lists PCB : 8485908z04 Main Board Top Side 8485908z04 Main Board Bottom SidePage 4-56 Page 4-57 SCHEMATICS Power Amplifier 25-60W (Sheet 1 of 2) Power Amplifier 25-60W (Sheet 2 of 2) Voltage Controlled Oscillator Receiver Front End IF (Sheet 1 of 2) IF (Sheet 2 of 2) Noise Blanker FRACN Page 4-33 Page 4-34 Page 4-35 Page 4-36 Page 4-46 Page 4-47 Page 4-39 Page 4-40 Parts List 8485908z04 Page 4-58 Controller version is T11