Motorola MTR2000 T5544 Instruction / Field Service Manual page 118

Troubleshooting
Troubleshooting Overview
CAUTION
STOP
IMPORTANT
4
Introduction
Two procedures are provided for troubleshooting the station and ancillary
equipment. Each procedure is designed to quickly identify faulty mod-
ules, which may then be replaced with known good modules to restore
proper station operation.
Procedure 1 – Routine Site Visit Functional Checkout
Procedure 1 consists of a quick series of non-intrusive tests performed dur-
ing a routine site visit. This procedure allows the technician to verify the
proper station operation without taking the station out of service. An
overview of the procedure is shown in the flow chart of Figure 1.
Procedure 2 – Troubleshooting A Reported/Suspected Problem
Procedure 2 should be used when an equipment problem has been either
reported or is suspected. This procedure comprises both non-intrusive
(equipment not taken out of service) and intrusive (requiring the equip-
ment be temporarily taken out of service) tests that allow the technician to
troubleshoot reported or suspected equipment malfunctions. An over-
view of the procedure is shown in the flow chart of Figure 2.
Some station components can become extremely hot during station op-
eration. Turn off all power to the station, and wait until sufficiently cool
before touching the station.
How to Use These Troubleshooting Procedures
Perform the following basic steps in order to efficiently troubleshoot the
station equipment.
1. Select the appropriate troubleshooting procedure flow chart (Proce-
dure 1 or Procedure 2).
2. Perform the tasks given in the selected flow chart. Tasks requiring
additional explanation are identified with an arrow (
propriate reference. Locate the additional information, perform the
tasks (if any), and return to the flow chart.
3. Once the faulty module has been identified, proceed to Module Re-
placement Procedures, Section 4.
The station circuitry contains many CMOS and other static-sensitive de-
vices. When servicing the equipment, take precautionary measures to
prevent damage of station modules by static discharge. Refer to Anti-
Static Precautions of Section 3 before servicing the station.
) and an ap-
68P81096E17-E
09/30/05