6 - 4 MTH800 TETRA Handportable Terminal / Basic Service Manual MAINTENANCE
• Correct baking (needed only if the reel has been opened) procedure is at
minimum
8 HOURS IN 125 DEGREES.
• It is ABSOLUTELY FORBIDDEN to bake at temperature above 125 degrees.
• Please note also that reels that have not been opened (still in vacuum) do not
need baking.
• When this part is replaced manually, it should be pressed to the PCB during the
soldering.
Level 1 and Level 2 Maintenance
This manual covers Level 1 and Level 2 Maintenance: at Level 1 maintenance you replace the
terminal and/or accessories and send the faulty unified chassis and/or accessories to a higher level
of maintenance; at level 2 maintenance a faulty kit is replaced.
For Level 3 please refer to
Appendix A.
Environmentally Preferred Products (EPP), refer to the indications on the
printed circuitboards, are developed and assembled using environmentally
preferred components andsolder assembly techniques in compliance to the
European Union’s Restriction of Hazardous Subtances (ROHS) Directive
2002/95/EC and Waste Electrical and Electronic Equipment (WEEE)
Directive 2002/96/EC. To maintain product compliance and reliability, use
only the Motorola specified parts in this manual.
For the identification of lead (Pb) free assemblies, all EPP products will carry
the EPP Marking with the symbol shown below on the PCB. The marking
provides information to those performing assembly, servicing and recycling
operation on these product adhering to the JEDEC standard #97. The EPP
Marking will be in the form of label or marking on printed circuit board (PCB).
Disassembling and Reassembling the MTH800 Unit
Mechanical checks and self tests should be performed on the unit at the basic
level of service. To perform testing at the field level, it is sometimes necessary to
remove the antenna and the housing from the unit. Procedures for disassembling
and reassembling the unit are described in the sections that follow.
Note: Read each procedure thoroughly before performing the actual task.
Protecting Static-Sensitive Devices
This unit contains static-sensitive devices that must be protected when opening
the unit, or storing and transporting any printed-circuit board.
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