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3. MAINTENANCE
3.1 INTRODUCTION
The following section outlines the fault-finding procedure for the OSD139HS modem. Please take note
of the following:
Personnel without appropriate training should not attempt any maintenance except that outlined
below.
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.
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:
Ensure that the RS232 signal is connected to the modem correctly and that the distant OSD139HS
modem has been terminated correctly to any external equipment.
Inspect the optical connectors for any contamination and clean using acetone and a lint free tissue if
any contamination is detected.
Ensure that the DTE/DCE switch is set for the correct mode of operation.
3.3 ROUTINE MAINTENANCE
There is no routine maintenance required with the OSD139HS.
Page 12 of 16
OSD139HS OPERATOR MANUAL
OPTICAL SYSTEMS DESIGN
DOC ID: 10117202
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