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General Repair Procedures and Techniques
Section 1: 2-3
Any rework or repair on Environmentally Preferred Products must be done using the appropriate
lead-free solder wire and lead-free solder paste as stated in the following table:
4.1
Parts Replacement and Substitution
When damaged parts are replaced, identical parts should be used. If the identical replacement
component is not locally available, check the parts list for the proper Motorola part number and order
the component from the nearest Motorola Radio Products and Solution Organization listed in
Appendix A of this manual.
4.2
Rigid Circuit Boards
The family of radios 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 through-plated holes may interconnect multiple layers of the printed circuit. Therefore, care
should be exercised to avoid pulling the plated circuit out of the hole.
When soldering near the connector pins:
•
avoid accidentally getting solder in the connector.
•
be careful not to form solder bridges between the connector pins.
•
closely examine your work for shorts due to solder bridges.
4.3
Chip Components
Use the RLN4062 Hot-Air Repair Station for chip component replacement. Adjust the temperature
control to 390
°
C (735
°
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
RMA Version
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
Содержание PRO Series
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