Module Replacement Procedures - Motorola MTR2000 T5544 Instruction / Field Service Manual

Troubleshooting
4

MODULE REPLACEMENT PROCEDURES

Station modules suspected of being faulty must be replaced with known good modules to restore the station to
proper operation. The following procedures provide instructions for replacing each of the station modules and
performing any required post-replacement adjustments or programming.
General Replacement Procedures
STOP
IMPORTANT
Note
Note
20
DO NOT insert or remove station modules with power applied. This
may result in damage to the modules. Always turn off the station by re-
moving the source of ac power (and battery backup power, if used) be-
fore inserting or removing modules.
MTR2000 modules are not field-repairable. Contact the System Support
Center at the phone number listed in the first section of this manual for in-
formation on obtaining replacement modules.
All screws used in the station are T-20 Torx-head screws, unless other-
wise noted.
Anti-Static Precaution
The station circuitry contains many CMOS and other static-sensitive de-
vices. When servicing the equipment, you must take precautionary steps
to prevent damage to the modules from static discharge. Complete infor-
mation on prevention of static protection is provided in Motorola publica-
tion 68P81106E84, available through Motorola Americas Parts Division
(APD) or a local support Motorola facility (see the list of Motorola facilities
in the front matter of this manual, under Service and Replacement Mod-
ules). Some additional precautions are as follows:
• Always wear a static-grounding wrist strap (Motorola Part No. RSX-
4015A, or equivalent) while handling any station board or module to
minimize static buildup. The static-grounding wrist strap is connect-
ed to the front-right handle of the station.
• Avoid touching conductive parts of any module with your hands.
• Avoid carpeted areas, dry environments, and certain types of cloth-
ing (silk, nylon, etc.) during service to minimize static buildup.
• Be sure to ground all electrically-powered test equipment. Connect a
ground lead (–) from the test equipment to the module or board be-
fore connecting the test probe (+). When testing is complete, remove
the test probe first, then remove the ground lead.
68P81096E17-E
09/30/05