Optical Systems Design OSD138, Operator'S Manual, Page: 15 / 20

OPTICAL SYSTEMS DESIGN
DOC ID: 10105510
OSD138 OPERATOR MANUAL
PAGE 13
3 MAINTENANCE
3.1 INTRODUCTION
The following section outlines the fault-finding procedure for the OSD138 modems. Please take note of
the following:
σ
Personnel without appropriate training should not attempt any maintenance except that outlined
below.
σ
If further maintenance is attempted you are warned that every care should be taken to ensure that
internal measurements made while the equipment is operational are taken carefully as some
components within the unit are expensive and may be damaged by failure of any portion of their
support circuitry.
σ Some components within the unit are electrostatic sensitive and ESD precautions should be taken
when performing maintenance upon the unit.
3.2 EXTERNAL INSPECTION
Visually check for the following:
σ
Check that the correct power source is connected to the power socket.
σ
Check that the data signals are connected to the modem correctly and that the distant OSD138
modem has been terminated correctly to any external equipment.
σ Inspect the optical connectors for any contamination and clean using isopropyl alcohol and a lint
free tissue if any contamination is detected.
σ
Check that any external termination resistors are connected if the system configuration requires
them.
3.3 ROUTINE MAINTENANCE
σ There is no routine maintenance required with the OSD138.