Motorola MTR3000 User Manual

2-4 Introduction
Parts Replacement and Substitution
When damaged parts are replaced, identical parts should be used. If the identical replacement part
is not locally available, check the parts list for the proper Motorola part number and order the part
from the nearest Motorola Radio Products and Solutions Organization listed in the respective
Appendix chapters in this manual.
Rigid Circuit Boards
The repeater uses bonded, multi-layer, printed circuit boards. Since the inner layers are not
accessible, some special considerations are required when soldering and unsoldering components.
The printed through holes may interconnect multiple layers of the printed circuit. Therefore, exercise
care to avoid pulling the plated circuit out of the hole.
When soldering near a connector:
• Avoid accidentally getting solder in the connector
• Be careful not to form solder bridges between the connector pins
• Examine your work closely for shorts due to solder bridges.
Chip Components
Use the RLN4062 Hot-Air Repair Station for chip component replacement. Adjust the temperature
control to 370 °C (700 °F), and adjust the airflow to a minimum setting. Airflow can vary due to
component density.
• To remove a chip component:
1. Use a hot-air hand piece, and position the nozzle of the hand piece approximately 0.3
cm (1/8") above the component to be removed.
2. Begin applying the hot air. Once the solder reflows, remove the component using a pair
of tweezers.
3. Using a solder wick and a soldering iron or a power desoldering station, remove the
excess solder from the pads.
Table 2-1 Lead Free Solder Wire Part Number List
Motorola
Part Number
Alloy Flux Type
Flux Content
by Weight
Melting
Point
Supplier Part
number
Diameter Weight
1088929Y01 95.5Sn/3.8Ag/0.7Cu RMAVersion 2.7-3.2% 217C 52171 0.015 1lb spool
Table 2-2 Lead Free Solder Paste Part Number List
Motorola Part
Number
Manufacturer Part
Number
Viscosity Type Composition & Percent Metal
Liquid
Temperature
1085674C03 NC-SMQ230 900-1000KCPs
Brookfield (5rpm)
Type 3
(-325/+500)
(95.5%Sn-3.8%Ag-0.7%Cu)
89.3%
217°C
Note MTR3000 Power Amplifier with Solder Wire Part Number 1010041C24 and Solder Paste
Part Number 1010041C20 uses leaded solder.

Motorola MTR3000 Specifications

General

Brand	Motorola
Model	MTR3000
Category	Accessories
Language	English