Motorola Pro3100 Detailed Service Manual

Section 5: 4-28 UHF Band 1 (403–470 MHz) 1–25 W PCB 8485670Z03, Schematics, and Parts Lists
6881091C63-F
* Motorola Depot Servicing only
Reference designators with an asterisk indicate
components which are not field replaceable
because they need to be calibrated with
specialized factory equipment after installation.
Radios in which these parts have been replaced in
the field will be off frequency at temperature
extremes.
†
Replacement boards must be ordered from
RPSO (formerly CCSD and/or AAD) using the
number shown in the model charts in Section 1.
Boards are not orderable using the 84-prefixed
number.
R4401 0662057A36 300 Ohm
R4402 0662057A05 15 Ohm
R4403 0662057A36 300 Ohm
R4404 0662057A89 47K Ohm
R4406 0662057A97 100K Ohm
R4412 0662057A69 6800 Ohm
R4413 0662057A61 3300 Ohm
R4415 0662057A18 51 Ohm
R4416 0662057A18 51 Ohm
R4418 0662057A59 2700 Ohm
R4421 0662057A87 39K Ohm
R4422 0662057A57 2200 Ohm
R4423 0662057A87 39K Ohm
R4424 0662057C13 2.7 Ohm
R4425 0662057C13 2.7 Ohm
R4426 0662057C13 2.7 Ohm
R4427 0662057C13 2.7 Ohm
R4428 0662057A58 2400 Ohm
R4429 0662057A59 2700 Ohm
R4431 0680194M18 51 Ohm
R4441 0662057A87 39K Ohm
R4442 0662057A57 2200 Ohm
R4443 0662057A87 39K Ohm
R4445 0662057A58 2400 Ohm
R4446 0662057B47 0 Ohm
R4452 0662057A75 12K Ohm
R4454 0662057A73 10K Ohm
R4455 0662057A97 100K Ohm
R4457 0683962T51 120 Ohm
R4458 0662057A41 470 Ohm
R4471 0662057A41 470 Ohm
R4473 0680194M18 51 Ohm
R4474 0680194M18 51 Ohm
R4475 0662057A73 10K Ohm
R4491 0662057A73 10K Ohm
R4501 0662057A69 6800 Ohm
R4502 0662057A83 27K Ohm
R4504 0662057A73 10K Ohm
R4505 0662057B09 300K Ohm
R4507 0662057A80 20K Ohm
R4508 0662057A97 100K Ohm
R4509 0662057A49 1000 Ohm
R4511 0662057C19 4.7 Ohm
SH4301 2602641Y02 SHIELD
SH4302 2602641Y02 SHIELD
T4051 2505515V03 XFMR MIXER 4:1
T4052 2505515V04 XMFR MIXER 5:1
U3101 5186144B01 IC, IF
U3111 5102463J52 QUAD ANALOG SWITCH
U3115 5102463J52 QUAD ANALOG SWITCH
U4201 5185963A27 IC FRACTN
Circuit
Ref
Motorola
Part No.
Description
U4211 5105739X05 IC, VOLTAGE REGULATOR
U4301 5105750U54 IC, VCO
U4401 5185130C65 IC LDMOS DRIVER
U4402 5113818A01 LOW POWER SUPPLY
U4501 5185765B28 IC POWER CONTROL
U4502 5185963A15 IC TEMPERATURE SENSOR
VR4471 4813830A15 DIODE, 5.6V
Y3101
4802245J84
4880606B09
2ND OSC XTAL 44.395 MHZ
3rd overtone crystal
fundamental crystal
Y3102 9186145B02 455KHz DISCRIMINATOR
Y4262 4886182B01 TCXO 16.8MHZ
Circuit
Ref
Motorola
Part No.
Description

Motorola Pro3100 Specifications

General

Brand	Motorola
Model	Pro3100
Category	Two-Way Radio
Language	English